2022年4月19日
Enhanced Overall Water Splitting by a Zirconium‐Doped TaON‐Based Photocatalyst
Angewandte Chemie International Edition
- 巻
- 61
- 号
- 17
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/anie.202116573
- 出版者・発行元
- WILEY-V C H VERLAG GMBH
Solar-powered one-step-excitation overall water splitting (OWS) using semiconducting materials is a simple means of achieving scalable and sustainable hydrogen production. While tantalum oxynitride (TaON) is one of the few photocatalysts capable of promoting OWS via single-step visible-light excitation, the efficiency of this process remains extremely poor. The present work employed 15 nm amorphous Ta2O5.3.3 H2O nanoparticles as a new precursor together with Zr doping and an optimized nitridation duration to synthesize a TaON-based photocatalyst with reduced particle sizes and low defect densities. Upon loading with Ru/Cr2O3/IrO2 cocatalysts, this material exhibited stoichiometric water splitting into hydrogen and oxygen, with an order of magnitude improvement in efficiency. Our findings demonstrate the importance of inventing/selecting the appropriate synthetic precursor and of defect control for fabricating active OWS photocatalysts.
- リンク情報
- ID情報
-
- DOI : 10.1002/anie.202116573
- ISSN : 1433-7851
- eISSN : 1521-3773
- ORCIDのPut Code : 109018312
- Web of Science ID : WOS:000762126000001