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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

Lookup NU author(s): Dr Stevin Pramana

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Abstract

We reported herein a facile and scalable preparation process for MoS 2-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/MoS 2 hybrid photocatalysts in comparison to the conventional method relying on thermal decomposition of (NH4)2[MoS 4] 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 Zn 0.2Cd0.8S. That was the most impressive catalytic enhancement ever recorded for a semiconductor photocatalyst decorated with a noble metal free electrocatalyst. © 2013 The Royal Society of Chemistry.


Publication metadata

Author(s): Nguyen M, Tran PD, Pramana SS, Lee RL, Batabyal SK, Mathews N, Wong LH, Graetzel M

Publication type: Article

Publication status: Published

Journal: Nanoscale

Year: 2013

Volume: 5

Issue: 4

Pages: 1479-1482

Print publication date: 21/02/2013

Online publication date: 04/01/2013

ISSN (print): 2040-3364

ISSN (electronic): 2040-3372

Publisher: Royal Society of Chemistry

DOI: 10.1039/c2nr34037b

PubMed id: 23334494


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