2019年1月1日
Solar Water Oxidation by a Visible-Light-Responsive Tantalum/Nitrogen-Codoped Rutile Titania Anode for Photoelectrochemical Water Splitting and Carbon Dioxide Fixation
ChemPhotoChem
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- 巻
- 3
- 号
- 1
- 開始ページ
- 37
- 終了ページ
- 45
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/cptc.201800157
Non-oxide materials such as oxynitrides are good candidates as photoanodes for visible-light-driven water oxidation, but most of them suffer from oxidative degradation by photogenerated holes, resulting in low stability. Herein we developed a photoanode using a visible-light-responsive TiO powder doped with tantalum and nitrogen (TiO :Ta/N) for water oxidation. The Ta/N codoping enabled a stable anodic photocurrent response attributable to water oxidation under visible-light irradiation. Surface modification of the TiO :Ta/N anode with RuO species further facilitated water oxidation catalysis, achieving stable O evolution over 5 h of operation with no sign of deactivation. Operando XAFS measurements revealed an important function of the RuO species as a collector of photogenerated holes in TiO :Ta/N, facilitating the photoelectrochemical water oxidation. Visible-light-driven H evolution and solar-driven CO reduction into CO were both achieved by using water as an electron donor in photoelectrochemical cells with the TiO :Ta/N photoanode coupled to a Pt cathode and a Ru(II)–Re(I) binuclear complex photocathode, respectively. 2 2 2 x 2 x 2 2 2 2
- リンク情報
- ID情報
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- DOI : 10.1002/cptc.201800157
- ISSN : 2367-0932
- eISSN : 2367-0932
- ORCIDのPut Code : 57471955
- SCOPUS ID : 85065023516