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

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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

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Publication details

The article was received on 28 Nov 2017, accepted on 22 Jan 2018 and first published on 23 Jan 2018


Article type: Paper
DOI: 10.1039/C7DT04475E
Citation: Dalton Trans., 2018, Advance Article
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    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, Advance Article , DOI: 10.1039/C7DT04475E

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