| Title | Interface modulation of BiVO4 based photoanode with Bi(III)Bi(V)O-4 for enhanced solar water splitting |
| Authors | Ma, Ming Xing, Zheng Zhu, Xi Jiang, Peng Wang, Xiao Lin, He An, Yiming Su, Haibin Yang, Shihe |
| Affiliation | Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Clear Water Bay, Hong Kong, Peoples R China Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Guangdong, Peoples R China Shenzhen Inst Artificial Intelligence & Robot Soc, Shenzhen 518172, Guangdong, Peoples R China Peking Univ, Shenzhen Grad Sch, Sch Chem Biol & Biotechnol, Guangdong Key Lab Nanomicro Mat Res, Shenzhen 518055, Peoples R China |
| Keywords | VISIBLE-LIGHT CHARGE SEPARATION OXYGEN FABRICATION PHOTOCATALYST HETEROJUNCTION PERFORMANCE VACANCIES |
| Issue Date | Nov-2020 |
| Publisher | JOURNAL OF CATALYSIS |
| Abstract | Despite being considered as one of the most promising semiconductor photocatalysts, BiVO4 still suffers the problems of inefficient light harvesting, multiple charge recombination channels and back reactions, restricting its application for solar energy conversion. Here, we demonstrate a unique Bi2O4(400)/BiVO4(040) heterojunction prepared via an oxidation conversion process, which dramatically accelerated the interfacial charge transfer compared to pure BiVO4. Furthermore, with Mo doping, carbon quantum dots (CQDs) loading and Ni-FeOOH co-catalyst deposition, the resulting Bi2O4/Mo-BiVO4/CQDs/Ni-FeOOH photoanode reaches a remarkable photocurrent density of 6.7 mA/cm(2) at 1.23 V vs. RHE under AM 1.5G irradiation in the absence of hole scavengers. Our findings demonstrate that proper material interface engineering together with composition tuning provides a viable route to achieve highly efficient solar water splitting. (C) 2020 Elsevier Inc. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/599590 |
| ISSN | 0021-9517 |
| DOI | 10.1016/j.jcat.2020.09.012 |
| Indexed | SCI(E) |
| Appears in Collections: | 深圳研究生院待认领 |
