@article{d850d6724da841298122b22ac0b75546,
title = "Enhanced Overall Water Splitting by a Zirconium-Doped TaON-Based Photocatalyst",
abstract = "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.",
keywords = "Defects, Oxynitride, Precursors, Solar Energy, Water Splitting",
author = "Jiadong Xiao and Shinji Nishimae and Vequizo, {Junie Jhon M.} and Mamiko Nakabayashi and Takashi Hisatomi and Huihui Li and Lihua Lin and Naoya Shibata and Akira Yamakata and Yasunobu Inoue and Kazunari Domen",
note = "Funding Information: This work was financially supported by the Artificial Photosynthesis Project of the New Energy and Industrial Technology Development Organization (NEDO). Part of this work was conducted at the Advanced Characterization Nanotechnology Platform of the University of Tokyo, supported by the “Nanotechnology Platform” of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan (JPMXP09‐A‐21‐UT‐0046). The authors thank Ms. Michiko Obata (Shinshu University) and Ms. Keiko Kato (University of Tokyo) for their help in performing XPS and ICP‐AES analyses, respectively. J.X. specially thanks Dr. Jabor Rebeah (Leibniz Institute for Catalysis, Germany) for the EPR measurement and analyses. Funding Information: This work was financially supported by the Artificial Photosynthesis Project of the New Energy and Industrial Technology Development Organization (NEDO). Part of this work was conducted at the Advanced Characterization Nanotechnology Platform of the University of Tokyo, supported by the “Nanotechnology Platform” of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan (JPMXP09-A-21-UT-0046). The authors thank Ms. Michiko Obata (Shinshu University) and Ms. Keiko Kato (University of Tokyo) for their help in performing XPS and ICP-AES analyses, respectively. J.X. specially thanks Dr. Jabor Rebeah (Leibniz Institute for Catalysis, Germany) for the EPR measurement and analyses. Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",
year = "2022",
month = apr,
day = "19",
doi = "10.1002/anie.202116573",
language = "English",
volume = "61",
journal = "Angewandte Chemie - International Edition",
issn = "1433-7851",
publisher = "John Wiley and Sons Ltd",
number = "17",
}
