Pyrochlore-structural Nd2Ta2O5N2 photocatalyst with an absorption edge of over 600 nm for Z-scheme overall water splitting.
- Resource Type
- Article
- Authors
- Zou, Hai; Qi, Yu; Du, Shiwen; Liu, Lifang; Xin, Xueshang; Bao, Yunfeng; Wang, Shuowen; Feng, Zhaochi; Zhang, Fuxiang
- Source
- Chemical Communications. 9/28/2022, Vol. 58 Issue 76, p10719-10722. 4p.
- Subject
- *VISIBLE spectra
*OXIDATION of water
*LIGHT absorption
*NITRIDES
*ABSORPTION
*SILVER phosphates
*PLATINUM
- Language
- ISSN
- 1359-7345
A pyrochlore-structural oxynitride Nd2Ta2O5N2 with a visible light absorption edge of ca. 620 nm was explored for photocatalytic water splitting. Dual functions of Nd2Ta2O5N2 were confirmed by proton reduction and water oxidation half-reactions through separately loading Pt or CoOx as a cocatalyst in the presence of the corresponding sacrificial reagent. Finally, the platinum modified sample (Pt/Nd2Ta2O5N2) was prepared and employed as the H2-evolving photocatalyst to fabricate an effective photocatalytic Z-scheme overall water splitting together with PtOx/WO3 as the O2-evolving photocatalyst and IO3−/I− as shuttle ions under visible light irradiation. [ABSTRACT FROM AUTHOR]