Visible-Light-Driven Photocatalytic Z-Scheme Overall Water Splitting in La5Ti2AgS5O7-based Powder-Suspension System
- 影响因子：8.928
- DOI码：10.1002/cssc.201802306
- 发表刊物：ChemSusChem
- 关键字：Lighting up the water
- 摘要：La5Ti2CuxAg1−xS5O7 (x=0–1) is a type of long-wavelength-responsive oxysulfide photocatalysts for hydrogen evolution and has been demonstrated to enable the Z-scheme water-splitting coupling with oxygen evolution photocatalysts (OEPs) in the particulate sheet. Among La5Ti2CuxAg1−xS5O7 materials, La5Ti2AgS5O7 was found to have the highest performance on Z-scheme overall water splitting in conjunction with PtOx-WO3 as an OEP and a triiodide/iodide (I3−/I−) redox couple as a shuttle electron mediator in a powder-suspension system. Loading Pt/NiS on La5Ti2AgS5O7 benefitted the Z-scheme to achieve an apparent quantum yield of 0.12 % at 420 nm. The results for this powder-suspension system differ from earlier studies on photocatalyst sheet configurations, in which p-type doping and the formation of a solid solution could effectively enhance the water-splitting activity. This work not only demonstrates a La5Ti2AgS5O7-based Z-scheme water-splitting photocatalyst but also improves the understanding of the difference between particulate sheets and a powder-suspension system available in an optimal strategy for water splitting.
- 合写作者：Takashi Hisatomi, Shanshan Chen, Qian Wang, Guijun Ma, Shikuo Li,朱晓娣
- 第一作者：Zhimin Song
- 通讯作者：Song Sun, Kazunari Domen
- 卷号：12
- 期号：9
- 页面范围：1906-1910
- ISSN号：1864-5431
- 是否译文：否
- 发表时间：2019/05/08
- 发布期刊链接：https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.201802306
