Issue 76, 2022

Pyrochlore-structural Nd2Ta2O5N2 photocatalyst with an absorption edge of over 600 nm for Z-scheme overall water splitting

Abstract

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.

Graphical abstract: Pyrochlore-structural Nd2Ta2O5N2 photocatalyst with an absorption edge of over 600 nm for Z-scheme overall water splitting

Supplementary files

Article information

Article type
Communication
Submitted
23 Mud 2022
Accepted
31 Mha 2022
First published
31 Mha 2022

Chem. Commun., 2022,58, 10719-10722

Pyrochlore-structural Nd2Ta2O5N2 photocatalyst with an absorption edge of over 600 nm for Z-scheme overall water splitting

H. Zou, Y. Qi, S. Du, L. Liu, X. Xin, Y. Bao, S. Wang, Z. Feng and F. Zhang, Chem. Commun., 2022, 58, 10719 DOI: 10.1039/D2CC02903K

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