Maqola

One-Step Excitation Overall Water Splitting over a Modified Mg-Doped BaTaO<sub>2</sub>N Photocatalyst

Huihui LiResearch Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, JapanJiadong XiaoResearch Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, JapanJunie Jhon M. VequizoResearch Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, JapanTakashi HisatomiPRESTO, JST, 4-17-1 Wakasato, Nagano-shi, Nagano 380-8553, JapanMamiko NakabayashiInstitute of Engineering Innovation, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, JapanZhenhua PanResearch Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, JapanNaoya ShibataInstitute of Engineering Innovation, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, JapanAkira YamakataGraduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku-ku, Nagoya 468-8511, JapanTsuyoshi TakataResearch Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, JapanKazunari DomenOffice of University Professors, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan

2022en

ABI

Annotatsiya

BaTaO2N responds to visible light up to 650 nm and exhibits photocatalytic activity during the hydrogen and oxygen evolution reactions. However, the difficulty in promoting both processes simultaneously hinders the realization of overall water splitting (OWS) over this material. Herein, we demonstrate the activation and stabilization of BaTaO2N–based photocatalysts for visible-light-driven OWS by combining flux-assisted nitridation with Mg doping and co-loading of Cr2O3/(Na)Rh and IrO2 co-catalysts. RbCl-assisted nitridation produced single-crystal BaTaO2N particles doped with Mg and so promoted charge transfer to the co-catalysts. The co-loading of Cr2O3/(Na)Rh and IrO2 at moderate temperatures as co-catalysts to promote the hydrogen and oxygen evolution reactions, respectively, allowed the BaTaO2N photocatalyst to evolve hydrogen and oxygen simultaneously from water. This work highlights the importance of carefully tuning semiconducting and catalytic properties to realize effective charge transfer when preparing narrow-bandgap oxynitrides for OWS.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1021/acscatal.2c02394

Iqtiboslar va manbalar

2 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar