論文

査読有り
2022年1月12日

Crystal Facet Engineering and Hydrogen Spillover-Assisted Synthesis of Defective Pt/TiO2–x Nanorods with Enhanced Visible Light-Driven Photocatalytic Activity

ACS Applied Materials & Interfaces
  • Yukari Yamazaki
  • ,
  • Tetsuya Toyonaga
  • ,
  • Naoto Doshita
  • ,
  • Kohsuke Mori
  • ,
  • Yasutaka Kuwahara
  • ,
  • Suzuko Yamazaki
  • ,
  • Hiromi Yamashita

14
1
開始ページ
2291
終了ページ
2300
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acsami.1c20148
出版者・発行元
American Chemical Society (ACS)

Hydrogen spillover can assist the introduction of defects such as Ti3+ and concomitant oxygen vacancies (VO) in a TiO2 crystal, thereby inducing a new level below the conduction band to improve the conductivity of photogenerated electrons and the visible light absorption property of TiO2. Meanwhile, crystal facet engineering offers a promising approach to achieve improved activity by influencing the recombination step of the photogenerated electrons and holes. In this study, with the aim of achieving enhanced visible light-driven photocatalytic activity, rutile TiO2 nanorods with different aspect ratios were synthesized by crystal facet engineering, and Pt-deposited TiO2-x nanorods (Pt/TNR) were then obtained via reduction treatment assisted by hydrogen spillover. The reduction treatment at 200 °C induced the formation of surface Ti3+ exclusively, whereas surface Ti3+ and VO were formed by performing the reduction at 600 °C. The Pt/TNR with a higher aspect ratio reduced at 200 °C exhibited the highest activity in photocatalytic H2 production under visible light irradiation owing to the synergistic effect of the introduction of Ti3+ defects and the spatial charge carrier separation induced by crystal facet engineering.

リンク情報
DOI
https://doi.org/10.1021/acsami.1c20148
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/34967219
URL
https://pubs.acs.org/doi/pdf/10.1021/acsami.1c20148
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85122653180&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85122653180&origin=inward
ID情報
  • DOI : 10.1021/acsami.1c20148
  • ISSN : 1944-8244
  • eISSN : 1944-8252
  • PubMed ID : 34967219
  • SCOPUS ID : 85122653180

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