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Unique CdS@MoS(2) Core Shell Heterostructure for Efficient Hydrogen Generation Under Natural Sunlight
The hierarchical nanostructured CdS@MoS(2) core shell was architectured using template free facile solvothermal technique. More significantly, the typical hexagonal phase of core CdS and shell MoS(2) has been obtained. Optical study clearly shows the two steps absorption in the visible region having...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6700150/ https://www.ncbi.nlm.nih.gov/pubmed/31427636 http://dx.doi.org/10.1038/s41598-019-48532-3 |
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author | Kadam, Sunil R. Gosavi, Suresh W. Kale, Bharat B. Suzuki, Norihiro Terashima, Chiaki Fujishima, Akira |
author_facet | Kadam, Sunil R. Gosavi, Suresh W. Kale, Bharat B. Suzuki, Norihiro Terashima, Chiaki Fujishima, Akira |
author_sort | Kadam, Sunil R. |
collection | PubMed |
description | The hierarchical nanostructured CdS@MoS(2) core shell was architectured using template free facile solvothermal technique. More significantly, the typical hexagonal phase of core CdS and shell MoS(2) has been obtained. Optical study clearly shows the two steps absorption in the visible region having band gap of 2.4 eV for CdS and 1.77 eV for MoS(2). The FESEM of CdS@MoS(2) reveals the formation of CdS microsphere (as a core) assemled with 40–50 nm nanoparticles and covered with ultrathin nanosheets of MoS(2) (Shell) having size 200–300 nm and the 10–20 nm in thickness. The overall size of the core shell structure is around 8 µm. Intially, there is a formation of CdS microsphre due to high affinity of Cd ions with sulfur and further growth of MoS(2) thin sheets on the surface. Considering band gap ideally in visible region, photocatalytic hydrogen evolution using CdS@MoS(2) core shell was investigated under natural sunlight. The utmost hydrogen evolution rate achieved for core shell is 416.4 µmole h(−1) with apparent quantum yield 35.04%. The photocatalytic activity suggest that an intimate interface contact, extended visible light absorption and effective photo generated charge carrier separation contributed to the photocatalytic enhancement of the CdS@MoS(2) core shell. Additional, the enhanced hole trapping process and effective electrons transfer from CdS to MoS(2) in CdS@MoS(2) core shell heterostructures can significantly contribute for photocatalytic activity. Such core shell heterostructure will also have potential in thin film solar cell and other microelectronic devices. |
format | Online Article Text |
id | pubmed-6700150 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-67001502019-08-21 Unique CdS@MoS(2) Core Shell Heterostructure for Efficient Hydrogen Generation Under Natural Sunlight Kadam, Sunil R. Gosavi, Suresh W. Kale, Bharat B. Suzuki, Norihiro Terashima, Chiaki Fujishima, Akira Sci Rep Article The hierarchical nanostructured CdS@MoS(2) core shell was architectured using template free facile solvothermal technique. More significantly, the typical hexagonal phase of core CdS and shell MoS(2) has been obtained. Optical study clearly shows the two steps absorption in the visible region having band gap of 2.4 eV for CdS and 1.77 eV for MoS(2). The FESEM of CdS@MoS(2) reveals the formation of CdS microsphere (as a core) assemled with 40–50 nm nanoparticles and covered with ultrathin nanosheets of MoS(2) (Shell) having size 200–300 nm and the 10–20 nm in thickness. The overall size of the core shell structure is around 8 µm. Intially, there is a formation of CdS microsphre due to high affinity of Cd ions with sulfur and further growth of MoS(2) thin sheets on the surface. Considering band gap ideally in visible region, photocatalytic hydrogen evolution using CdS@MoS(2) core shell was investigated under natural sunlight. The utmost hydrogen evolution rate achieved for core shell is 416.4 µmole h(−1) with apparent quantum yield 35.04%. The photocatalytic activity suggest that an intimate interface contact, extended visible light absorption and effective photo generated charge carrier separation contributed to the photocatalytic enhancement of the CdS@MoS(2) core shell. Additional, the enhanced hole trapping process and effective electrons transfer from CdS to MoS(2) in CdS@MoS(2) core shell heterostructures can significantly contribute for photocatalytic activity. Such core shell heterostructure will also have potential in thin film solar cell and other microelectronic devices. Nature Publishing Group UK 2019-08-19 /pmc/articles/PMC6700150/ /pubmed/31427636 http://dx.doi.org/10.1038/s41598-019-48532-3 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Kadam, Sunil R. Gosavi, Suresh W. Kale, Bharat B. Suzuki, Norihiro Terashima, Chiaki Fujishima, Akira Unique CdS@MoS(2) Core Shell Heterostructure for Efficient Hydrogen Generation Under Natural Sunlight |
title | Unique CdS@MoS(2) Core Shell Heterostructure for Efficient Hydrogen Generation Under Natural Sunlight |
title_full | Unique CdS@MoS(2) Core Shell Heterostructure for Efficient Hydrogen Generation Under Natural Sunlight |
title_fullStr | Unique CdS@MoS(2) Core Shell Heterostructure for Efficient Hydrogen Generation Under Natural Sunlight |
title_full_unstemmed | Unique CdS@MoS(2) Core Shell Heterostructure for Efficient Hydrogen Generation Under Natural Sunlight |
title_short | Unique CdS@MoS(2) Core Shell Heterostructure for Efficient Hydrogen Generation Under Natural Sunlight |
title_sort | unique cds@mos(2) core shell heterostructure for efficient hydrogen generation under natural sunlight |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6700150/ https://www.ncbi.nlm.nih.gov/pubmed/31427636 http://dx.doi.org/10.1038/s41598-019-48532-3 |
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