Issue 19, 2019

Enhanced photocatalytic activity and charge transfer of a TiO2/BiVO4 nanostructured composite

Abstract

Fabricating binary composites is an effective method for improving photocatalytic performance, whereas the physics basis is debatable due to the limitations of powder specimens. Here, we investigate the photocatalytic performance of a TiO2/BiVO4 nanostructured composite with well spatially resolved TiO2 and BiVO4, which was epitaxially grown on an yttrium stabilized zirconia (001) substrate by pulsed laser deposition. The nanostructured composite showed a 300% enhancement in the apparent quantum yield of rhodamine B degradation at 440 nm. The electron transfer labeled by Ag photodeposition revealed that the band alignment is type II. Charge spatial separation could improve the utilization of not only photogenerated electrons, but also holes.

Graphical abstract: Enhanced photocatalytic activity and charge transfer of a TiO2/BiVO4 nanostructured composite

Supplementary files

Article information

Article type
Paper
Submitted
26 Jul 2019
Accepted
24 Aug 2019
First published
26 Aug 2019

Catal. Sci. Technol., 2019,9, 5333-5338

Enhanced photocatalytic activity and charge transfer of a TiO2/BiVO4 nanostructured composite

Q. Yu, G. Li and F. Zhang, Catal. Sci. Technol., 2019, 9, 5333 DOI: 10.1039/C9CY01482A

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