Top-down fabrication of Ti doped BiVO4 nanosheets for efficient water oxidation under visible light

Abstract

BiVO4 is one of the fascinating materials with excellent photocatalytic properties. A top-down approach composed of a solid state reaction and an ion exchange reaction is introduced to fabricate Ti doped BiVO4 nanosheets. Ti doped BiVO4 nanosheets exhibit a thickness of 3 nm with a lateral dimension as large as 2 μm. The optimal photocatalytic performance is achieved for BiV0.98Ti0.02O4 with an O2 evolution rate of 102.8 μmol h−1 g−1 under visible light, which is 6 times and 23 times higher than those of undoped nanosheets and bulk sample, respectively. The enhancement is attributed to the short diffusion length of the photogenerated carriers in the nanosheets, the effective suppression of direct radiative recombination and the increasing concentration of oxygen vacancies induced by the Ti dopant.

Graphical abstract: Top-down fabrication of Ti doped BiVO4 nanosheets for efficient water oxidation under visible light

Article information

Article type
Paper
Submitted
14 Sep 2021
Accepted
21 Oct 2021
First published
22 Oct 2021

Catal. Sci. Technol., 2021, Advance Article

Top-down fabrication of Ti doped BiVO4 nanosheets for efficient water oxidation under visible light

B. Peng, Y. Shi, X. Zhang and P. Lv, Catal. Sci. Technol., 2021, Advance Article , DOI: 10.1039/D1CY01670A

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