Issue 10, 2023

Cost-effective preparation of layered tantalum oxynitrides for visible light-driven photocatalysis

Abstract

Layered oxynitrides are promising materials for visible light photocatalysis. However, the conventional method for the synthesis of oxynitrides using ammonia as a nitrogen source is dangerous. In this work, we successfully synthesized two layered tantalum oxynitrides, K1.35LaTa2O6.65N0.35 and K1.4Ca2Ta3O9.6N0.4, via a topochemical nitridation process using urea as a solid nitrogen source. Employing different characterization methods, we determined the structure and composition of layered oxynitrides. Furthermore, using Pt as a co-catalyst, these two layered oxynitrides showed excellent photocatalytic performances under visible light irradiation. In contrast to ammonia, urea process provides easy access for the synthesis of layered oxynitrides and sheds new light on the design of effective visible light-driven photocatalysts.

Graphical abstract: Cost-effective preparation of layered tantalum oxynitrides for visible light-driven photocatalysis

Supplementary files

Article information

Article type
Paper
Submitted
26 Oct 2022
Accepted
09 Jan 2023
First published
06 Feb 2023

Dalton Trans., 2023,52, 3127-3136

Cost-effective preparation of layered tantalum oxynitrides for visible light-driven photocatalysis

W. Chen, Z. Wang, P. Wang, J. Li, J. Wang and L. Tang, Dalton Trans., 2023, 52, 3127 DOI: 10.1039/D2DT03470K

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