Yasutaka Kuwahara

J-GLOBAL         Last updated: Aug 23, 2019 at 19:34
 
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Name
Yasutaka Kuwahara
Affiliation
Osaka University
Section
Graduate School of Engineering
Job title
Lecturer
Degree
Ph.D. of Eng.(Osaka University)
Research funding number
40635330
ORCID ID
0000-0002-5867-6463

Research Areas

 
 

Academic & Professional Experience

 
Apr 2019
 - 
Today
Lecturer, Graduate School of Engineering, Division of Materials and Manufacturing Science, Osaka University
 
Apr 2019
 - 
Today
Lecturer, Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University
 
Apr 2014
 - 
Apr 2019
Assistant Professor, Graduate School of Engineering, Division of Materials and Manufacturing Science, Osaka University
 
Apr 2014
 - 
Apr 2019
Assistant Professor, Graduate School of Engineering, Frontier Research Base for Global Young Researchers, Osaka University
 
Apr 2014
 - 
Apr 2019
Assistant Professor, Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University
 
Apr 2012
 - 
Apr 2014
Post-doc Researcher, Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology
 
Apr 2011
 - 
Mar 2012
JSPS research fellows (PD), JSPS
 
Jun 2011
 - 
Dec 2011
Post-doc Researcher, Georgia Institute of Technology
 
Apr 2009
 - 
Mar 2011
Doctor course, Graduate School of Engineering, Division of Materials and Manufacturing Science, Osaka University
 
Apr 2009
 - 
Mar 2011
JSPS research fellows (DC1), JSPS
 

Education

 
Apr 2009
 - 
Mar 2011
Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
 
Apr 2006
 - 
Mar 2009
Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
 
Apr 2002
 - 
Mar 2006
School of Engineering, Osaka University
 

Awards & Honors

 
Aug 2016
Excellent Poster Award for Young Scientist, 9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9)
 
Jul 2016
Young Scientist Prize of ICC 16, 16th International Congress on Catalysis (ICC 16)
 

Published Papers

 
Miriam Navlani-García, David Salinas-Torres, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita
Catalysis Surveys from Asia   23 127-148   Sep 2019
© 2019, Springer Science+Business Media, LLC, part of Springer Nature. The pivotal role of size and morphology-controlled nanocrystals in catalysis is a recognized fact nowadays. Among the strategies developed to adjust such features, colloidal sy...
Yusuke Isaka, Yudai Kawase, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Angewandte Chemie - International Edition   58 5402-5406   Apr 2019
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Much effort has been devoted to photocatalytic production of hydrogen peroxide (H 2 O 2 ) as an alternative to fossil fuels. From an economic point of view, reductive synthesis of H 2 O 2 from O...
Miriam Navlani-García, Kohsuke Mori, David Salinas-Torres, Yasutaka Kuwahara, Hiromi Yamashita
Frontiers in Materials   6    Mar 2019
© 2019 Navlani-García, Mori, Salinas-Torres, Kuwahara and Yamashita. The urgency for finding clean energy sources is nowadays latent, and the role of hydrogen in the future of energy is well-recognized. However, there are still various barriers th...
David Salinas-Torres, Miriam Navlani-García, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita
Applied Catalysis A: General   571 25-41   Feb 2019
© 2018 Elsevier B.V. Nitrogen-doped carbon materials have emerged as versatile candidates with outstanding features as both support of metal-based catalysts and metal-free catalytic systems. Their use has been traditionally linked to electrochemic...
Shinya Masuda, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita
Journal of Materials Chemistry A   7 16356-16363   Jan 2019
© 2019 The Royal Society of Chemistry. The transformation of CO2 to formic acid (FA, HCOOH) is one of the most promising means of developing economically-viable CO2-mediated energy cycles, owing to the many advantages of FA as a feedstock, hydroge...
Yudai Kawase, Yusuke Isaka, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemical Communications   55 6743-6746   Jan 2019
© 2019 The Royal Society of Chemistry. A hydrophobic MOF, OPA/MIL-125-NH2, whose Ti cluster was alkylated with octadecylphosphonic acid (OPA), was found to enhance photocatalytic H2O2 production in a two-phase system. Its activity exceeded that of...
Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Catalysis Today      Jan 2019
© 2019 Elsevier B.V. The localized surface plasmon resonance (LSPR) mediated enhanced chemical activity can be entitled as a promising strategy for efficient solar to chemical energy conversion. To tune the selectivity of a desired product in a c...
David Salinas-Torres, Miriam Navlani-García, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Catalysis Today      Jan 2019
© 2019 Elsevier B.V. Lanthanum Strontium Cobalt (LSC) perovskite-based catalysts were prepared and evaluated in the ammonia borane dehydrogenation reaction. Doping with additional non-noble metals, such as Ni or Cu greatly enhanced the catalytic ...
Yusuke Isaka, Yoshifumi Kondo, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Catalysis Science and Technology   9 1511-1517   Jan 2019
© 2019 The Royal Society of Chemistry. The well-defined cavities of metal-organic frameworks (MOFs) offer interesting opportunities for the encapsulation of various nanoparticles, organic dyes and metal complexes. In particular, [Ru(bpy)3]2+-incor...
Yasutaka Kuwahara, Ryo Matsumura, Hiromi Yamashita
Journal of Materials Chemistry A   7 7221-7231   Jan 2019
© 2019 The Royal Society of Chemistry. A tandem reaction combining direct H2O2 production from H2 and O2 and a subsequent oxidation reaction with H2O2 in a single reaction vessel offers an energy-saving and cost-effective oxidation route for the s...
Yin H, Kuwahara Y, Mori K, Che M, Yamashita H.
Journal of Materials Chemistry A   7(8) 3783-3789   2019   [Refereed]
Verma P, Kuwahara Y, Mori K, Yamashita H.
Bulletin of the Chemical Society of Japan   19-29   2019   [Refereed]
Hiromi Yamashita, Kohsuke Mori, Yasutaka Kuwahara, Takashi Kamegawa, Meicheng Wen, Priyanka Verma, Michel Che
Chemical Society Reviews   47 8072-8096   Nov 2018
© The Royal Society of Chemistry. Silica-based micro-, meso-, macro-porous materials offer attractive routes for designing single-site photocatalysts, supporting semiconducting nanoparticles, anchoring light-responsive metal complexes, and encapsu...
Kohsuke Mori, Michel Che, Hiromi Yamashita
ChemCatChem   10 3424-3428   Aug 2018
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Although black phosphorus (BP) is an interesting 2D nanosheet material with a high hole mobility, its application in the photocatalytic water oxidation for O2 evolution is not reported yet. Herei...
Yasutaka Kuwahara, Yukihiro Yoshimura, Kohei Haematsu, Hiromi Yamashita
Journal of the American Chemical Society   140 9203-9210   Jul 2018
Copyright © 2018 American Chemical Society. Harvesting solar light to boost commercially important organic synthesis still remains a challenge. Coupling of conventional noble metal catalysts with plasmonic oxide materials which exhibit intense pla...
Meicheng Wen, Kohsuke Mori, Yasutaka Kuwahara, Taicheng An, Hiromi Yamashita
Chemistry - An Asian Journal   13 1767-1779   Jul 2018
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Single-site photocatalysts generally display excellent photocatalytic activity and considerably high stability compared with homogeneous catalytic systems. A rational structural design of single-...
Miriam Navlani-García, Priyanka Verma, Yasutaka Kuwahara, Takashi Kamegawa, Kohsuke Mori, Hiromi Yamashita
Journal of Photochemistry and Photobiology A: Chemistry   358 327-333   May 2018
© 2017 Elsevier B.V. Carbon/g-C3N4 composites (C/g-C3N4) with various carbon contents have been prepared by a simple experimental protocol from glucose and dicyandiamide. The results of the characterization of the as-prepared materials indicated t...
Ai Nozaki, Tasuku Yasuoka, Yasutaka Kuwahara, Tetsutaro Ohmichi, Kohsuke Mori, Takeshi Nagase, Hiroyuki Y. Yasuda, Hiromi Yamashita
Industrial and Engineering Chemistry Research   57 5599-5605   Apr 2018
© 2018 American Chemical Society. Au-CeO2 catalysts are prepared from amorphous Ce-Al alloys by the dealloying method, and their catalytic performances are examined in the oxidation of benzyl alcohol to benzaldehyde using O2 as an oxidant. The cat...
Yasutaka Kuwahara, Akihiro Fujibayashi, Hiroki Uehara, Kohsuke Mori, Hiromi Yamashita
Catalysis Science and Technology   8 1905-1914   Apr 2018
© 2018 The Royal Society of Chemistry. Fe-Doped manganese oxide catalysts were prepared by the citrate method and their catalytic activities in soot combustion were examined in air under tight contact mode. Among the catalysts tested, 12 mol% of F...
Priyanka Verma, Kaile Yuan, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Applied Catalysis B: Environmental   223 10-15   Apr 2018
© 2017 Elsevier B.V. Recent advancements in plasmonic catalysis have witnessed rapid developments in solar-to-chemical energy conversion utilizing Ag, Au and Cu metal nanoparticles (NPs). In this study, visible light responsive bimetallic Pt/Ag na...
Miriam Navlani-García, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita
NPG Asia Materials   10 277-292   Apr 2018
© The Author(s) 2018. There is an evident urgent need to find a renewable and clean energy vector to ensure the worldwide energy supply while minimizing environmental impacts, and hydrogen stands out as a promising alternative energy carrier. The ...
Kazuki Nakatsuka, Takeharu Yoshii, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemistry - A European Journal   24 898-905   Jan 2018
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Metal organic frameworks (MOFs) are a class of porous organic-inorganic crystalline materials that have attracted much attention as H2 storage devices and catalytic supports. In this paper, the s...
Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Catalysis Today   324 83-89   Jan 2018
© 2018 Elsevier B.V. Plasmonic photocatalysis caused by surface plasmon resonance (SPR) has emerged out as an impressive way for efficient light absorption and solar light conversion. A series of catalysts consisting of plasmonic Ag nanoparticles ...
Miriam Navlani-García, David Salinas-Torres, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita
International Journal of Hydrogen Energy      Jan 2018
© 2018 Hydrogen Energy Publications LLC The catalytic ability of graphitic carbon nitride (g-C3N4)-supported composition-controlled PdCo catalysts towards H2 generation from the formic acid dehydrogenation reaction was assessed in this study and a...
Nathalie Job, Hiromi Yamashita
Catalysis Today   324 90-96   Jan 2018
© 2018 N-doped carbon xerogels synthesized from melamine-resorcinol-formaldehyde aqueous gels were used as supports for the preparation of Pd-based catalysts for the formic acid dehydrogenation reaction. The effect of the pore texture and nitrogen...
Yuxiao Zhang, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemistry - An Asian Journal      Jan 2018
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Molybdenum disulfide (MoS2) has been regarded as a favorable photocatalytic co-catalyst and efficient hydrogen evolution reaction (HER) electrocatalyst alternative to expensive noble-metals catal...
Takeharu Yoshii, Kazuki Nakatsuka, Tatsuya Mizobuchi, Yasutaka Kuwahara, Hiroyuki Itoi, Kohsuke Mori, Takashi Kyotani, Hiromi Yamashita
Organic Process Research and Development   22 1580-1585   Jan 2018
© 2018 American Chemical Society. Carbon materials have been extensively studied for several decades as one of catalytic supports due to their high surface area and porous structures. However, carbon black supports, such as Ketjen black or Vulcan ...
Yusuke Isaka, Yoshifumi Kondo, Yudai Kawase, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemical Communications   54 9270-9273   Jan 2018
© The Royal Society of Chemistry. Photocatalytic H2O2 production via two-electron reduction of O2 was realized by visible-light irradiation of a metal-organic framework, MIL-125-NH2, in the presence of TEOA and benzylalcohol. Deposition of NiO nan...
Haibo Yin, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Journal of Materials Chemistry A   6 10932-10938   Jan 2018
This journal is © The Royal Society of Chemistry. A plasmonic Pd/MoxW1-xO3-y hybrid, having Pd NPs anchored on a plasmonic MoxW1-xO3-y support, is obtained by a solution-processed impregnation-reduction method. The synthesized Pd/MoxW1-xO3-y hybri...
Priyanka Verma, Miriam Navlani-García, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Journal of Chemical Sciences   129 1661-1669   Nov 2017
© 2017, Indian Academy of Sciences. Abstract: Silver-based bimetallic Pd/Ag plasmonic catalysts supported on mesoporous silica catalyze the chemoselective reduction of nitrostyrene (NS) to aminostyrene (AS). Ammonia borane (AB) is used as a mild r...
Miriam Navlani-García, Priyanka Verma, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita
Journal of Chemical Sciences   129 1695-1703   Nov 2017
© 2017, Indian Academy of Sciences. Abstract: A facile synthetic protocol was used to prepare morphology controlled Pd nanocrystals with spherical and cubic shapes of different sizes. Carbon-supported catalysts were prepared from the as-synthesise...
Haibo Yin, Yasutaka Kuwahara, Kohsuke Mori, Hefeng Cheng, Meicheng Wen, Yuning Huo, Hiromi Yamashita
Journal of Physical Chemistry C   121 23531-23540   Oct 2017
© 2017 American Chemical Society. A well-crystallized plasmonic MoxW1-xO3-yhybrid was obtained by a nonaqueous method. Detailed characterization by means of XRD, TEM, Raman, UV-vis, N2physisorption, and XPS measurements revealed that the synthesiz...
Kensei Fujiwara, Yasutaka Kuwahara, Yuki Sumida, Hiromi Yamashita
Langmuir   33 6314-6321   Jun 2017
© 2017 American Chemical Society. Yolk-shell nanostructured photocatalyst which consists of inner core photocatalytic particles and outer silica shell exhibits high photocatalytic efficiency and molecular size selectivity due to the molecular siev...
Yasutaka Kuwahara, Yuki Fujie, Hiromi Yamashita
ChemCatChem   9 1867   Jun 2017
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim The front cover artwork for Issue 11/2017 is provided by the Yamashita research group of the Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University (Jap...
Yasutaka Kuwahara, Yuki Fujie, Hiromi Yamashita
ChemCatChem   9 1906-1914   Jun 2017
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Production of formic acid (FA) by hydrogenation of CO2using a ternary hybrid catalyst, poly(ethyleneimine)-tethered Ir-iminophosphine complex (Ir-PN-PEI) immobilized in titanate nanotubes (TNTs),...
Yongmei Wu, Meicheng Wen, Miriam Navlani-García, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemistry - An Asian Journal   12 860-867   Apr 2017
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Pd nanoparticles (NPs) supported on Ti-doped graphitic carbon nitride (g-C3N4) were synthesized by a deposition–precipitation route and a subsequent reduction with NaBH4. The features of the NPs ...
Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemistry - A European Journal   23 3616-3622   Mar 2017
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Ag nanoparticles (NPs) have gained great attention owing to their interesting plasmonic properties and efficient catalysis under visible-light irradiation. In this study, an Ag-based plasmonic c...
Jiayuan Shi, Yasutaka Kuwahara, Taicheng An, Hiromi Yamashita
Catalysis Today   281 21-28   Mar 2017
© 2016 Elsevier B.V. In this work, a composite photocatalyst of TiO2 supported on the slag-made calcium silicate (TiO2/SCS) was synthesized by employing a facile mixing process and using blast furnace slag as a low-cost and abundant precursor of S...
Yasutaka Kuwahara, Wako Kaburagi, Yohsuke Osada, Tadahiro Fujitani, Hiromi Yamashita
Catalysis Today   281 418-428   Mar 2017
© 2016 Elsevier B.V. A series of ZrO2 catalysts supported on mesoporous SBA-15 silica were synthesized and examined as catalysts in the production of γ-valerolactone (GVL) from biomass-derived levulinic acid and its esters via a catalytic transfer...
Meicheng Wen, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita
ACS Energy Letters   2 1-7   Jan 2017
© 2016 American Chemical Society. We report synergistic catalysis of plasmonic Au@Pd nanoparticles supported on titanium-doped zirconium-based aminefunctionalized metal-organic frameworks (MOFs) (UiO-66(Zr100-xTix)) for boosting room-temperature h...
Kensei Fujiwara, Yasutaka Kuwahara, Yuki Sumida, Hiromi Yamashita
Langmuir : the ACS journal of surfaces and colloids   33 288-295   Jan 2017
TiO2 nanoparticles (NPs) encapsulated in hollow silica spheres (TiO2@HSSs) show a shielding-effect that can insulate photocatalytically active TiO2 NPs from the surrounding environment and thus prohibit the self-degradation of organic support mate...
Yasutaka Kuwahara, Takahiro Ando, Hiroto Kango, Hiromi Yamashita
Chemistry - A European Journal   23 380-389   Jan 2017
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim One-pot reaction involving Pd-catalyzed H2O2 production from H2 and O2 and Ti-catalyzed successive oxidation with H2O2 in a single reaction vessel is an alluring strategy for the synthesis of tar...
Yasutaka Kuwahara, Hiroto Kango, Hiromi Yamashita
ACS Sustainable Chemistry and Engineering   5 1141-1152   Jan 2017
© 2016 American Chemical Society. Production of γ-valerolactone (GVL) from biomass-derived levulinic acid and its esters via a catalytic transfer hydrogenation (CTH) process over sulfonic acid-functionalized UiO-66, a microporous zirconium-based m...
Kensei Fujiwara, Yasutaka Kuwahara, Yuki Sumida, Hiromi Yamashita
Journal of Materials Chemistry A   5 25431-25437   Jan 2017
© 2017 The Royal Society of Chemistry. Silver nanoparticles (AgNPs) encapsulated in porous materials such as mesoporous silica and zeolite exhibit high adsorption toward sulfur compounds owing to their defined porous structure. In this study, we r...
Yasutaka Kuwahara, Naoyuki Furuichi, Hiroyuki Seki, Hiromi Yamashita
Journal of Materials Chemistry A   5 18518-18526   Jan 2017
© 2017 The Royal Society of Chemistry. We report a one-pot synthesis of MoOxNPs encapsulated inside hollow silica spheres (MoOx@HSS) which act as an efficient and reusable heterogeneous catalyst in the epoxidation of olefins. A yolk-shell nanostru...
Hiromi Yamashita
Applied Catalysis B: Environmental   218 555-569   Jan 2017
© 2017 Elsevier B.V. MOFs offers a potential platform for anchoring photosensitizers and catalytic moieties, encapsulating metal nanoparticles, and supporting the semiconductor to drive chemical H2production reactions by taking the advantages of l...
Kazuki Nakatsuka, Takeharu Yoshii, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Physical Chemistry Chemical Physics   19 4967-4974   Jan 2017
© 2017 the Owner Societies. Realizing accurate control of catalytically active centers on solid surfaces is one of the most essential goals in the development of functionalized heterogeneous catalysts. Controlled synthesis of carbon-supported Co c...
Takeharu Yoshii, Kazuki Nakatsuka, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemistry Letters   46 789-791   Jan 2017
© 2017 The Chemical Society of Japan. The structure-activity relationship of carbon-supported Co catalysts was investigated in solvent-free aerobic oxidation of ethylbenzene under microwave irradiation. A single-site Co species show specifically h...
Yasutaka Kuwahara, Hiromi Yamashita
ISIJ International   57 1657-1664   Jan 2017
Discharging phosphorus through wastewaters into waterbodies holds potential risks of eutrophication and adverse effects on aquatic organisms. On the other hand, phosphorus is an indispensable element needed for all life forms and plant growth, whi...
Yasuhiro Magatani, Yasutaka Kuwahara, Kazuto Nishizawa, Hiromi Yamashita
ChemistrySelect   2 4332-4337   Jan 2017
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Cation-π interaction is an intermolecular interaction between the face of a π system and an adjacent cation, which brings about a change in molecular dynamics of organic reactants in catalysis. I...
Kohsuke Mori, Yusuke Miyauchi, Yasutaka Kuwahara, Hiromi Yamashita
Bulletin of the Chemical Society of Japan   90    Jan 2017
A series of MnOx-decorated CeO2 (MnCeO) catalysts with various morphologies was prepared via shape-controlled synthesis of single-crystalline CeO2, e.g., nanorod, nanoparticle, and nanocube, by a hydrothermal method followed by the deposition of M...
Takeharu Yoshii, Kazuki Nakatsuka, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
RSC Advances   7 22294-22300   Jan 2017
© The Royal Society of Chemistry. Pd-Co bimetallic catalysts were prepared by the controlled synthesis of carbon-supported Co catalysts, ranging from single-sites to nanoparticles, via structural transformation of a deposited Co(salen) complex pre...
Junji Nishii, Toshiharu Yamashita, Hiroshi Kawazoe, Takahisa Omata
Journal of Materials Chemistry A   5 12385-12392   Jan 2017
© 2017 The Royal Society of Chemistry. In this work, the effect of alkaline-earth species used in phosphate glasses on the mobility of proton carriers was investigated. Initially, 35NaO1/2-5RO-3NbO5/2-3LaO3/2-2GeO2-2BO3/2-50PO5/2 (R: Mg and Ba) gl...
Haibo Yin, Yasutaka Kuwahara, Kohsuke Mori, Hefeng Cheng, Meicheng Wen, Hiromi Yamashita
Journal of Materials Chemistry A   5 8946-8953   Jan 2017
© 2017 The Royal Society of Chemistry. Well-crystallized, high-surface-area plasmonic MoO3-xwas synthesized by combining an evaporation induced self-assembly (EISA) process and a subsequent hydrogen reduction at a certain temperature. The intrinsi...
Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Catalysis Science and Technology   7 2551-2558   Jan 2017
© The Royal Society of Chemistry 2017. A series of bimetallic M/Ag (where M represents Pd, Ru, Ni and Co metallic species) nanorod (NR)-based plasmonic photocatalysts with 0.5 wt% loading of M on Ag (1.0 wt%) are prepared within the mesoporous cha...
Seongwon Jo, Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Wonyong Choi, Hiromi Yamashita
Journal of Materials Chemistry A   5 21883-21892   Jan 2017
© 2017 The Royal Society of Chemistry. Ammonia borane (AB) is a hydrogen storage material which can produce three equivalent moles of H2gas by a hydrolytic decomposition reaction in the presence of an appropriate catalyst. The photocatalytic H2gen...
Pei Hsuan Liu, Meicheng Wen, Chih Shan Tan, Miriam Navlani-García, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita, Lih Juann Chen
Nano Energy   31 57-63   Jan 2017
© 2016 Localized surface plasmon resonances (LSPR) in near-infrared (NIR) region have been extensively studied for copper chalcogenide nanostructures, not only for the absorption enhancement but also tunable LSPR characteristics with their free ca...
Yasutaka Kuwahara, Yukihiro Yoshimura, Hiromi Yamashita
Dalton Transactions   46 8415-8421   Jan 2017
© 2017 The Royal Society of Chemistry. Liquid-phase oxidation of alkylaromatics with molecular O2was examined using a microporous Mn-based metal-organic framework (Mn-MOF-74). Mn-MOF-74 consisting of trimeric Mn clusters and 2,5-dihydroxyterephtha...
Meicheng Wen, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Topics in Catalysis   59 1765-1771   Dec 2016
© 2016, Springer Science+Business Media New York. In this study, monometallic gold and palladium, and bimetallic gold/palladium were respectively deposited on chromium based amine-functionalized metal–organic framework (NH2-MIL-101) by using the i...
Jaime García-Aguilar, Miriam Navlani-García, Ángel Berenguer-Murcia, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita, Diego Cazorla-Amorós
Langmuir   32 12110-12118   Nov 2016
© 2016 American Chemical Society. Palladium nanoparticles (Pd NPs) were synthesized by the reduction-by-solvent method using polyvinylpirrolidone (PVP) as capping agent. The nonstatic interaction between PVP and the metallic surface may change the...
Miriam Navlani-García, Kohsuke Mori, Ai Nozaki, Yasutaka Kuwahara, Hiromi Yamashita
Applied Catalysis A: General   527 45-52   Oct 2016
© 2016 Elsevier B.V. Highly efficient carbon-supported Ru catalysts towards the H2 production from the ammonia borane (AB: NH3BH3) hydrolysis reaction have been developed by using tri(2,2′-bipyridyl) ruthenium (II) chloride hexahydrate as metal pr...
Yasutaka Kuwahara, Yuki Sumida, Kensei Fujiwara, Hiromi Yamashita
ChemCatChem   8 2781-2788   Sep 2016
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A novel and facile method to fabricate yolk–shell nanostructured photocatalysts consisting of TiO2 nanoparticles (NPs) as the core and spherical hollow silica as the shell was developed. In the f...
Jiayuan Shi, Yasutaka Kuwahara, Meicheng Wen, Miriam Navlani-García, Kohsuke Mori, Taicheng An, Hiromi Yamashita
Chemistry - An Asian Journal   11 2377-2381   Sep 2016
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A straightforward aqueous synthesis of MoO3−x nanoparticles at room temperature was developed by using (NH4)6Mo7O24⋅4 H2O and MoCl5 as precursors in the absence of reductants, inert gas, and orga...
Meicheng Wen, Yiwen Cui, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
ACS Applied Materials and Interfaces   8 21278-21284   Aug 2016
© 2016 American Chemical Society. In this work, we propose a straightforward method to enhance the catalytic activity of AB dehydrogenation by using non-noble-metal nanoparticle supported on chromium-based metal-organic framework (MIL-101). It was...
Muhua Luo, Pan Lu, Weifeng Yao, Cunping Huang, Qunjie Xu, Qiang Wu, Yasutaka Kuwahara, Hiromi Yamashita
ACS Applied Materials and Interfaces   8 20667-20674   Aug 2016
© 2016 American Chemical Society. The shape and composition effects of platinum-palladium (Pt-Pd) alloy nanoparticle cocatalysts on visible-light photocatalytic hydrogen evolution from an aqueous ammonium sulphite solution have been reported and d...
Hefeng Cheng, Meicheng Wen, Xiangchao Ma, Yasutaka Kuwahara, Kohsuke Mori, Ying Dai, Baibiao Huang, Hiromi Yamashita
Journal of the American Chemical Society   138 9316-9324   Jul 2016
© 2016 American Chemical Society. Heavily doped semiconductors have recently emerged as a remarkable class of plasmonic alternative to conventional noble metals; however, controlled manipulation of their surface plasmon bands toward short waveleng...
Miriam Navlani-García, Kohsuke Mori, Ai Nozaki, Yasutaka Kuwahara, Hiromi Yamashita
Industrial and Engineering Chemistry Research   55 7612-7620   Jul 2016
© 2016 American Chemical Society. A screening of carbon-supported PdAg nanoparticles (NPs) (PdAg/C) in H2 production from formic acid (FA) dehydrogenation was carried out by using uniform ∼3-5 nm PdAg alloy NPs with a wide compositional range in t...
Ai Nozaki, Yasutomo Tanihara, Yasutaka Kuwahara, Tetsutaro Ohmichi, Kohsuke Mori, Takeshi Nagase, Hiroyuki Y. Yasuda, Hiromi Yamashita
Catalysis Today   265 138-143   May 2016
© 2015 Elsevier B.V. All rights reserved. The skeletal Pd catalysts were prepared from Pd-Zr alloys which possess amorphous or crystalline state. The hydrogenation of 1-octene to octane over skeletal Pd catalysts proceeded efficiently while Pd-Zr ...
Hexing Li, Hiromi Yamashita
Nanoscale   8 7749-7754   Apr 2016
© 2016 The Royal Society of Chemistry. A microwave-antenna strategy was developed for the in situ synthesis of Cu nanowire (CuNW) threaded ZIF-8. The CuNWs acted as microwave-antennas to generate surface "super hot" dots. The high temperature of "...
Ai Nozaki, Yasutomo Tanihara, Yasutaka Kuwahara, Tetsutaro Ohmichi, Kohsuke Mori, Takeshi Nagase, Hiroyuki Y. Yasuda, Hiromi Yamashita
ChemPhysChem   17 412-417   Feb 2016
© 2016 Wiley-VCH Verlag GmbH & Co. KGaA. Skeletal Ni catalysts were prepared from Ni-Zr alloys, which possess different chemical composition and atomic arrangements, by a combination of thermal treatment and treatment with aqueous HF. Hydrogen g...
Ai Nozaki, Somchuen Kittima, Yasutomo Tanihara Tanihara, Yasutaka Kuwahara, Tetsutaro Ohmichi, Takashi Kamegawa, Kohsuke Mori, Hiromi Yamashita
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals   80 365-369   Jan 2016
© 2016 The Japan Institute of Metals and Materials. The catalytic performances of skeletal Cu prepared from Cu-Ti amorphous alloy heated at various temperatures were tested for the hydrogen generation from ammonia borane. The catalytic activity pe...
Ai Nozaki, Yasutomo Tanihara, Yasutaka Kuwahara, Tetsutaro Ohmichi, Kohsuke Mori, Takeshi Nagase, Hiroyuki Y. Yasuda, Christophe Calers, Catherine Louis, Hiromi Yamashita
Journal of Materials Chemistry A   4 8458-8465   Jan 2016
© The Royal Society of Chemistry 2016. Skeletal (nanoporous) gold catalysts were prepared from Au-Zr amorphous alloys by immersion in HF solution to extract Zr moieties. The catalytic performance of the skeletal Au catalyst for the oxidation of be...
Yasutomo Tanihara, Ai Nozaki, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Bulletin of the Chemical Society of Japan   89 1048-1053   Jan 2016
© 2016 The Chemical Society of Japan. An alternative approach to fabricate thin layers of metal organic frameworks (MOFs) on metal substrates without any needs of specific apparatuses was developed. Cu substrates were immersed into acid solution c...
Yasutaka Kuwahara, Shigetaka Tamagawa, Tadahiro Fujitani, Hiromi Yamashita
Bulletin of the Chemical Society of Japan   89 472-480   Jan 2016
© 2016 The Chemical Society of Japan. A layered double hydroxide (LDH) type adsorbent for phosphate removal from aqueous solution was prepared from blast furnace slag (BFS) which is vastly discharged by the iron manufacturing industry. The phospha...
Ai Nozaki, Yasutomo Tanihara, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemistry Letters   45 976-978   Jan 2016
© 2016 The Chemical Society of Japan. Layers of metal organic framework (MOF) crystals on skeletal Cu were prepared. The use of DMF as a solvent led to the deposition of densely packed MOF crystals on skeletal Cu and to high catalytic activity in ...
Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Journal of Materials Chemistry A   4 10142-10150   Jan 2016
© The Royal Society of Chemistry 2016. A systematic comparison of plasmonic properties and catalytic performances has been performed with Pd deposited bimetallic nanostructures of plasmonic Ag and Au. Mesoporous silica (SBA-15) supported Ag and Au...
Takashi Kamegawa, Yasutaka Kuwahara, Hiromi Yamashita
Journal of the Japan Petroleum Institute   59 165-173   Jan 2016
A review covers recent investigations on the design of TiO2-loaded porous siliceous materials for application to photocatalytic environmental purification (e.g. CO2) via efficient adsorption and condensation of target organic molecules and decompo...
Yasutaka Kuwahara, Yukihiro Yoshimura, Hiromi Yamashita
Catalysis Science and Technology   6 442-448   Jan 2016
© The Royal Society of Chemistry 2016. The liquid-phase oxidation of alkylaromatics with molecular O2over manganese hydroxide catalysts supported on various oxides was examined. The reaction kinetics in ethylbenzene oxidation with O2indicated some...
Miriam Navlani-García, Kohsuke Mori, Ai Nozaki, Yasutaka Kuwahara, Hiromi Yamashita
ChemistrySelect   1 1879-1886   Jan 2016
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The size effect in the hydrogen production from formic acid decomposition has been investigated using a series of carbon-supported Pd NPs with different particle sizes ranging from 2.7 to 5.5 nm....
Jaime García-Aguilar, Miriam Navlani-García, Ángel Berenguer-Murcia, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita, Diego Cazorla-Amorós
RSC Advances   6 91768-91772   Jan 2016
© 2016 The Royal Society of Chemistry. Pd and CoxPd1-xnanoparticles (NPs), synthesized using the reduction by solvent method, were loaded on SiO2and Ti-SiO2supports. The resulting catalysts were tested in the ammonia-borane decomposition reaction ...
Meicheng Wen, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita
ChemCatChem   7 3519-3525   Nov 2015
© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. The intercalation of CO2 reduction catalyst [Re(bpy)(CO)3Cl] (bpy=2,2′-bipyridine) into a layered zirconium phosphate (Zr(HPO4)2·H2O, α-ZrP) with an interlayer distance of 10.3 Å was performed. ...
Ai Nozaki, Yasutomo Tanihara, Yasutaka Kuwahara, Tetsutaro Ohmichi, Takashi Kamegawa, Kohsuke Mori, Hiromi Yamashita
Applied Catalysis A: General   504 559-564   Sep 2015
© 2015 Elsevier B.V. All rights reserved. Skeletal Ni catalysts were prepared from an amorphous Ni<inf>40</inf>Zr<inf>60</inf> alloy (a-NiZr) by the selective extraction of Zr moieties by the HF treatment, followed by heating at various temperatur...
Priyanka Verma, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Journal of Materials Chemistry A   3 18889-18897   Aug 2015
© 2015 The Royal Society of Chemistry. A uniformly dispersed Pd/Ag bimetallic system supported on mesoporous silica SBA-15 was synthesized by a two-step method. Ag/SBA-15 was first synthesized by the microwave-assisted alcohol reduction method, wh...
Hefeng Cheng, Xufang Qian, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Advanced Materials   27 4616-4621   Aug 2015
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. A plasmonic hybrid having Pd nanoparticles on plasmonic MoO<inf>3</inf> <inf>-x</inf> is developed by a facile solution process, and its plasmonic resonance displays reversible tunability upon o...
Meicheng Wen, Yasutaka Kuwahara, Kohsuke Mori, Dieqing Zhang, Hexing Li, Hiromi Yamashita
Journal of Materials Chemistry A   3 14134-14141   Jul 2015
© 2015 Royal Society of Chemistry. A variety of physical properties such as optical, fluorescence, and guest absorption capacity integrated within hybrid MOF based materials may show synergetic effects for significantly enhancing the performance o...
Yasutaka Kuwahara, Yasuhiro Magatani, Hiromi Yamashita
Catalysis Today   258 262-269   May 2015
©2015 Elsevier B.V. All rights reserved. Hydrogenation of levulinic acid and its esters to produce γ-valerolactone (GVL) was demonstrated over ruthenium nanoparticle (NP) catalyst supported on Zr-containing spherical mesoporous silicas as a bifunc...
Hefeng Cheng, Kojirou Fuku, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Journal of Materials Chemistry A   3 5244-5258   Mar 2015
© 2015 The Royal Society of Chemistry. The past several decades have witnessed the fast-growing field of plasmonics, which localize and concentrate incident light at the nanoscale and provide a source of light, heat and energetic carriers. Plasmon...
Meicheng Wen, Peijue Liu, Shuning Xiao, Kohsuke Mori, Yasutaka Kuwahara, Hiromi Yamashita, Hexing Li, Dieqing Zhang
RSC Advances   5 11029-11035   Jan 2015
© The Royal Society of Chemistry 2015. In order to improve the photocatalytic activity of TiO<inf>2</inf>, synthesis of well-faceted single crystals of anatase TiO<inf>2</inf> with a high percentage of reactive facets exposed has attracted much at...
Ai Nozaki, Somchuen Kittima, Yasutomo Tanihara, Yasutaka Kuwahara, Tetsutaro Ohmichi, Takashi Kamegawa, Kohsuke Mori, Hiromi Yamashita
Materials Transactions   56 485-489   Jan 2015
© 2014 The Japan Institute of Metals and Materials. The catalytic performances of skeletal Cu prepared from Cu-Ti amorphous alloy heated at various temperatures were tested for the hydrogen generation from ammonia borane. The catalytic activity pe...
Kazuki Nakatsuka, Yasutaka Kuwahara, Kohsuke Mori, Hiromi Yamashita
Chemistry Letters   44 1691-1693   Jan 2015
© 2015 The Chemical Society of Japan. A new photoassisted deposition (PAD) method using fullerene C60is developed. Photoexcited fullerene C60introduced within the mesopore of SBA-15 acts as an anchor to reduce Ru3+ions to the highly dispersed Ru m...
Miriam Navlani-García, Kohsuke Mori, Meicheng Wen, Yasutaka Kuwahara, Hiromi Yamashita
Bulletin of the Chemical Society of Japan   88 1500-1502   Jan 2015
© 2015 The Chemical Society of Japan. Particle size dependence in the H2production from formic acid was investigated over Pd/C catalysts with nanoparticle sizes ranging from 2.7 to 5.5 nm. A volcano type relationship between catalytic activity and...
Yasutaka Kuwahara, Hiromi Yamashita
ISIJ International   55 1531-1537   Jan 2015
Copyright © 2015. ISIJ. A Ca-based layered double hydroxide (LDH) was synthesized from blast furnace slag (BFS) via a facile and low-cost manufacture process. The synthesis was performed through a two-step method including (i) an acid-dissolution ...
Yoshiaki Agawa, Masayuki Kunimatsu, Takeshi Ito, Yasutaka Kuwahara, Hiromi Yamashita
ECS Electrochemistry Letters   4    Jan 2015
© 2015 The Electrochemical Society. A coaxial arc plasma deposition (CAPD) source was developed to generate metallic nanoparticles (NPs) with sizes from subnanometer to several nanometers. Pt NPs were deposited on a carbon support by CAPD for use ...
Yasutaka Kuwahara, Tadahiro Fujitani, Hiromi Yamashita
Catalysis Today   237 18-28   Nov 2014
© 2013 Elsevier B.V. All rights reserved. Levulinic acid is considered one of the most important biomass-derived chemicals owing to its poten-tial as a versatile building block to synthesize valuable fuels and chemicals. Levulinate esters, such as...
Yasutaka Kuwahara, Wako Kaburagi, Koji Nemoto, Tadahiro Fujitani
Applied Catalysis A: General   476 186-196   Apr 2014
Esterification of levulinic acid with ethanol to produce ethyl levulinate was examined by using sulfated Si-doped ZrO2 solid acid catalysts with enlarged surface areas and the relationships between the structural properties and catalytic performan...
Yasutaka Kuwahara, Wako Kaburagi, Tadahiro Fujitani
Bulletin of the Chemical Society of Japan   87 1252-1254   Jan 2014
© 2014 The Chemical Society of Japan. Levulinic acid and its esters, important intermediate chemicals produced from biomass resources, were converted to γ-valerolactone via a catalytic transfer hydrogenation process over silica-supported zirconia ...
Yasutaka Kuwahara, Wako Kaburagi, Tadahiro Fujitani
RSC Advances   4 45848-45855   Jan 2014
© 2014 the Partner Organisations. Production of γ-valerolactone (GVL) from levulinate esters and several alcohols as hydrogen donors via a catalytic transfer hydrogenation (CTH) process was performed over supported ruthenium hydroxide catalysts. A...
Xufang Qian, Kojirou Fuku, Yasutaka Kuwahara, Takashi Kamegawa, Kohsuke Mori, Hiromi Yamashita
ChemSusChem   7 1528-1536   Jan 2014
In the past decades, various photocatalysts such as TiO2, transition-metal-oxide moieties within cavities and frameworks, or metal complexes have attracted considerable attention in light-excited catalytic processes. Owing to high surface areas, t...
Yasutaka Kuwahara, Takato Yamanishi, Takashi Kamegawa, Kohsuke Mori, Hiromi Yamashita
ChemCatChem   5 2527-2536   Aug 2013
Candida antarctica lipaseA was immobilized on spherical silica nanoparticles with oil-filled core and oil-induced mesoporous silica shell with different silica shell structures. The immobilization of enzymes was achieved by directly adding enzymes...

Books etc

 
Nanostructured Photocatalysts, Advanced Functional Materials
Yasutaka Kuwahara (Part:Joint Work, Chapter 14 TiO2 Photocatalyst Supported on Surface-Modified Silica Supports Series)
Springer publications   2016   

Conference Activities & Talks

 
Hiromi Yamashita
King Fahd University of Petroleum and Minerals, Research Institute - 24th Annual Saudi-Japan Symposium on Catalysts in Petroleum Refining and Petrochemicals 2014   1 Jan 2014   
Due to the high request for the energy consumption, the search for efficient and safe hydrogen storage materials is of crucial significance, which may provide a long-term solution to people's concern. Ammonia borane (NH<inf>3</inf>BH<inf>3</inf>) ...