The effect of morphology and size on the photocatalytic properties of MoS2

Kun Hu; Xian Hu; Yu Xu; Xiu Pan

doi:10.1007/s11144-010-0173-3

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Reaction Kinetics, Mechanisms and Catalysis

Volume/Issue:: Volume 100: Issue 1

The effect of morphology and size on the photocatalytic properties of MoS₂

Authors:

Kun Hu

Kun Hu

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Xian Hu

Xian Hu Hefei University of Technology Department of Environmental Protection and Monitoring Hefei 230009 China

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Yu Xu

Yu Xu Hefei University of Technology Department of Environmental Protection and Monitoring Hefei 230009 China

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Xiu Pan

Xiu Pan Hefei University Department of Chemical and Materials Engineering Hefei 230022 China

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Pages:: 153–163

Online Publication Date:: 25 Mar 2010

Publication Date:: 01 Jun 2010

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s11144-010-0173-3

Keywords:: MoS2; Nanoparticles; Catalytic degradation; Morphology-size effect; Photocatalytic activity

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Abstract

The photocatalytic properties of MoS₂ samples including nano-ball, nano-slice and bulk 2H-MoS₂ were evaluated and compared with that of the anatase TiO₂ using the degradation reaction of methyl orange under visible light. The catalytic behaviors of the samples were also characterized using transmission electron microscopy, Brunauer-Emmett-Teller (BET) surface area, ultraviolet-visible spectroscopy, and FTIR spectroscopy. The results show that the bulk MoS₂ and the anatase TiO₂ were almost inactive under visible light. The nano-slice presented the most positive catalytic effect because it has a wide absorption at 400–700 nm and a high BET surface area. Though the BET surface area of the nano-ball was lower than that of the nano-slice, it has an active curved basal surface and presented a catalytic activity close to that of the nano-slice. Moreover, the MoS₂ nano-slice catalyst could be conveniently regenerated after filtration and drying.

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Reaction Kinetics, Mechanisms and Catalysis

Print ISSN:: 1878-5190

Online ISSN:: 1878-5204

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Reaction Kinetics, Mechanisms and Catalysis
Language	English
Size	B5
Year of Foundation	1974
Volumes per Year	1
Issues per Year	6
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	1878-5190 (Print)
ISSN	1878-5204 (Online)