Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution

Polyvinylpyrrolidone (PVP)-modified MoS3 nanoparticles with unusual water solubility up to 1.0 mg mL−1 were synthesized through a facile hydrothermal method in the presence of thioacetic acid. The amorphous nanoparticles wrapped by PVP have sizes of around 2.5 nm, which represent the smallest MoS3 c...

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Main Authors: Zhang, Wei, Zhou, Tianhua, Zheng, Jianwei, Hong, Jindui, Pan, Yunxiang, Xu, Rong
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2015
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Online Access:https://hdl.handle.net/10356/107167
http://hdl.handle.net/10220/25417
http://dx.doi.org/10.1002/cssc.201500067
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1071672019-12-06T22:25:57Z Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution Zhang, Wei Zhou, Tianhua Zheng, Jianwei Hong, Jindui Pan, Yunxiang Xu, Rong School of Chemical and Biomedical Engineering DRNTU::Science::Chemistry Polyvinylpyrrolidone (PVP)-modified MoS3 nanoparticles with unusual water solubility up to 1.0 mg mL−1 were synthesized through a facile hydrothermal method in the presence of thioacetic acid. The amorphous nanoparticles wrapped by PVP have sizes of around 2.5 nm, which represent the smallest MoS3 clusters reported. The photocatalytic performance of the MoS3 nanoparticles was evaluated under visible light for H2 evolution using xanthene dyes as photosensitizers. The quantum efficiency of the optimized system for H2 evolution under green light irradiation (520 nm) is up to 36.2 %, which is comparable with those of other excellent photocatalytic systems involving earth-abundant catalysts. The excellent photocatalytic activity can be attributed to its good dispersion in water, amorphous nature and limited layers with abundant surface active sites, and possibly higher conduction band potential for proton reduction and larger indirect band gap for a longer lifetime of the excited electrons. 2015-04-17T02:24:35Z 2019-12-06T22:25:57Z 2015-04-17T02:24:35Z 2019-12-06T22:25:57Z 2015 2015 Journal Article Zhang, W., Zhou, T., Zheng, J., Hong, J., Pan, Y., & Xu, R. (2015). Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution. ChemSusChem, in press. 1864-5631 https://hdl.handle.net/10356/107167 http://hdl.handle.net/10220/25417 http://dx.doi.org/10.1002/cssc.201500067 en ChemSusChem © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Science::Chemistry
spellingShingle DRNTU::Science::Chemistry
Zhang, Wei
Zhou, Tianhua
Zheng, Jianwei
Hong, Jindui
Pan, Yunxiang
Xu, Rong
Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution
description Polyvinylpyrrolidone (PVP)-modified MoS3 nanoparticles with unusual water solubility up to 1.0 mg mL−1 were synthesized through a facile hydrothermal method in the presence of thioacetic acid. The amorphous nanoparticles wrapped by PVP have sizes of around 2.5 nm, which represent the smallest MoS3 clusters reported. The photocatalytic performance of the MoS3 nanoparticles was evaluated under visible light for H2 evolution using xanthene dyes as photosensitizers. The quantum efficiency of the optimized system for H2 evolution under green light irradiation (520 nm) is up to 36.2 %, which is comparable with those of other excellent photocatalytic systems involving earth-abundant catalysts. The excellent photocatalytic activity can be attributed to its good dispersion in water, amorphous nature and limited layers with abundant surface active sites, and possibly higher conduction band potential for proton reduction and larger indirect band gap for a longer lifetime of the excited electrons.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Zhang, Wei
Zhou, Tianhua
Zheng, Jianwei
Hong, Jindui
Pan, Yunxiang
Xu, Rong
format Article
author Zhang, Wei
Zhou, Tianhua
Zheng, Jianwei
Hong, Jindui
Pan, Yunxiang
Xu, Rong
author_sort Zhang, Wei
title Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution
title_short Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution
title_full Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution
title_fullStr Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution
title_full_unstemmed Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution
title_sort water-soluble mos3 nanoparticles for photocatalytic h2 evolution
publishDate 2015
url https://hdl.handle.net/10356/107167
http://hdl.handle.net/10220/25417
http://dx.doi.org/10.1002/cssc.201500067
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