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Issue 4, 2013
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In situ photo-assisted deposition of MoS2 electrocatalyst onto zinc cadmium sulphide nanoparticle surfaces to construct an efficient photocatalyst for hydrogen generation

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Abstract

We reported herein a facile and scalable preparation process for MoS2-decorated ZnxCd1−xS hybrid photocatalysts for hydrogen generation. ZnxCd1−xS nanopowder was first prepared from commercially available precursors employing a solution based process. MoS2 hydrogen evolution reaction catalyst was then loaded onto the ZnxCd1−xS nanopowder via a photo-assisted deposition process which employed mild conditions (room temperature, atmospheric pressure and visible light illumination). Thus, this process represents an important advantage in the large scale production of semiconductor/MoS2 hybrid photocatalysts in comparison to the conventional method relying on thermal decomposition of (NH4)2[MoS4] precursor at high temperature and under H2S pressure. The best Zn0.2Cd0.8S/MoS2 3% showed two hundred-and-ten times (210 times) faster hydrogen generation rate on visible light illumination compared with that obtained for un-treated Zn0.2Cd0.8S. That was the most impressive catalytic enhancement ever recorded for a semiconductor photocatalyst decorated with a noble metal free electrocatalyst.

Graphical abstract: In situ photo-assisted deposition of MoS2 electrocatalyst onto zinc cadmium sulphide nanoparticle surfaces to construct an efficient photocatalyst for hydrogen generation

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Publication details

The article was received on 11 Dec 2012, accepted on 29 Dec 2012 and first published on 04 Jan 2013


Article type: Communication
DOI: 10.1039/C2NR34037B
Citation: Nanoscale, 2013,5, 1479-1482
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    In situ photo-assisted deposition of MoS2 electrocatalyst onto zinc cadmium sulphide nanoparticle surfaces to construct an efficient photocatalyst for hydrogen generation

    M. Nguyen, P. D. Tran, S. S. Pramana, R. L. Lee, S. K. Batabyal, N. Mathews, L. H. Wong and M. Graetzel, Nanoscale, 2013, 5, 1479
    DOI: 10.1039/C2NR34037B

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