Issue 2, 2015

Photocatalytic H2 evolution on MoS2–TiO2 catalysts synthesized via mechanochemistry

Abstract

At present, composite photocatalysts containing MoS2 as a co-catalyst and a subjective semiconductor material are usually obtained via various complex reduction methods using NH4MoS4 or Na2MoO4 as a precursor. In this work, a simple method was proposed to synthesize MoS2–TiO2 composite photocatalysts via mechanochemistry using MoS2 as a direct precursor. 4.0% MoS2–TiO2 after ball-milling at 300 rpm for 2 h possessed the maximum photocatalytic activity for H2 evolution. The rate of H2 evolution was up to 150.7 μmol h−1, which was 48.6 times higher than that of pure TiO2. The MoS2–TiO2 composite possesses stable photocatalytic performance for H2 evolution. Photoelectrochemical measurements confirmed the electronic interaction between TiO2 and MoS2. The photo-generated electrons on the conduction band of TiO2 could easily transfer to the MoS2 co-catalyst, which promoted efficient charge separation and improved the photocatalytic performance.

Graphical abstract: Photocatalytic H2 evolution on MoS2–TiO2 catalysts synthesized via mechanochemistry

Supplementary files

Article information

Article type
Paper
Submitted
13 Oct 2014
Accepted
01 Nov 2014
First published
05 Nov 2014

Phys. Chem. Chem. Phys., 2015,17, 933-940

Author version available

Photocatalytic H2 evolution on MoS2–TiO2 catalysts synthesized via mechanochemistry

Y. Zhu, Q. Ling, Y. Liu, H. Wang and Y. Zhu, Phys. Chem. Chem. Phys., 2015, 17, 933 DOI: 10.1039/C4CP04628E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements