Issue 8, 2018

Facile synthesis of Bi/BiVO4 composite ellipsoids with high photocatalytic activity

Abstract

BiVO4-based composites have been extensively investigated as promising photocatalysts due to their strong visible-light absorption. In this work, novel Bi/BiVO4 composites with excellent photocatalytic performance were firstly fabricated via a simple hydrothermal method, using BiVO4 as a self-sacrificing template and N2H4·H2O as a reductant. In the hydrothermal process, partial BiVO4 was reduced to form metallic Bi nanoparticles, which were deposited on the surface of BiVO4. The Bi content in the Bi/BiVO4 composites could be easily tuned by controlling the concentration of the N2H4·H2O solution. The photocatalytic performance of the Bi/BiVO4 composites was examined by studying the photodecomposition of RhB under visible-light illumination. The experimental results revealed that the Bi/BiVO4 composites exhibit high visible-light photocatalytic activity for the photodegradation of RhB compared with that of pure BiVO4. This enhanced photocatalytic activity likely originates from the strong visible-light absorption and high separation efficiency of photogenerated electron–hole pairs by Bi nanoparticles. This work presents a new approach for the development of Bi/BiVO4 composite photocatalysts with high activity and stability.

Graphical abstract: Facile synthesis of Bi/BiVO4 composite ellipsoids with high photocatalytic activity

Supplementary files

Article information

Article type
Paper
Submitted
28 Nov 2017
Accepted
22 Jan 2018
First published
23 Jan 2018

Dalton Trans., 2018,47, 2602-2609

Facile synthesis of Bi/BiVO4 composite ellipsoids with high photocatalytic activity

Q. Jing, X. Feng, J. Pan, L. Chen and Y. Liu, Dalton Trans., 2018, 47, 2602 DOI: 10.1039/C7DT04475E

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