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...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/107167 http://hdl.handle.net/10220/25417 http://dx.doi.org/10.1002/cssc.201500067 |
| _version_ | 1811676950024945664 |
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| author | Zhang, Wei Zhou, Tianhua Zheng, Jianwei Hong, Jindui Pan, Yunxiang Xu, Rong |
| 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 |
| author_sort | Zhang, Wei |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T02:29:36Z |
| format | Journal Article |
| id | ntu-10356/107167 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:29:36Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-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. |
| spellingShingle | DRNTU::Science::Chemistry Zhang, Wei Zhou, Tianhua Zheng, Jianwei Hong, Jindui Pan, Yunxiang Xu, Rong Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution |
| title | 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_short | Water-soluble MoS3 nanoparticles for photocatalytic H2 evolution |
| title_sort | water soluble mos3 nanoparticles for photocatalytic h2 evolution |
| topic | DRNTU::Science::Chemistry |
| 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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