Publication Type:

Journal Article

Source:

Nanoscale, The Royal Society of Chemistry, Volume 5, p.1479-1482 (2013)

URL:

http://dx.doi.org/10.1039/C2NR34037B

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.

Cite this Research Publication

M. Nguyen, Tran, P. D., Pramana, S. S., Lee, R. Lin, Batabyal Sudip Kumar, Mathews, N., Wong, L. H., and Graetzel, M., “In situ photo-assisted deposition of MoS 2 electrocatalyst onto zinc cadmium sulphide nanoparticle surfaces to construct an efficient photocatalyst for hydrogen generation”, Nanoscale, vol. 5, pp. 1479-1482, 2013.