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CdS decorated MnWO(4) nanorod nanoheterostructures: a new 0D–1D hybrid system for enhanced photocatalytic hydrogen production under natural sunlight
Constructing a heterostructure is an effective strategy to reduce the electron–hole recombination rate, which enhances photocatalytic activity. Here, we report a facile hydrothermal method to grow CdS nanoparticles on MnWO(4) nanorods and their photocatalytic hydrogen generation under solar light. A...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
RSC
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418746/ https://www.ncbi.nlm.nih.gov/pubmed/36131732 http://dx.doi.org/10.1039/d0na00843e |
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author | Sethi, Yogesh A. Kulkarni, Aniruddha K. Ambalkar, Anuradha A. Khore, Supriya K. Gunjal, Aarti R. Gosavi, Suresh W. Kale, Bharat B. |
author_facet | Sethi, Yogesh A. Kulkarni, Aniruddha K. Ambalkar, Anuradha A. Khore, Supriya K. Gunjal, Aarti R. Gosavi, Suresh W. Kale, Bharat B. |
author_sort | Sethi, Yogesh A. |
collection | PubMed |
description | Constructing a heterostructure is an effective strategy to reduce the electron–hole recombination rate, which enhances photocatalytic activity. Here, we report a facile hydrothermal method to grow CdS nanoparticles on MnWO(4) nanorods and their photocatalytic hydrogen generation under solar light. A structural study shows the decoration of hexagonal CdS nanoparticles on monoclinic MnWO(4). Morphological studies based on FE-TEM analysis confirm the sensitization of CdS nanoparticles (10 nm) on MnWO(4) nanorods of diameter-35 nm with mean length ∼100 nm. The lower PL intensity of MnWO(4) was observed with an increasing amount of CdS nanoparticles, which shows inhibition of the charge carrier recombination rate. A CdS@MnWO(4) narrow band gap semiconductor was employed for photocatalytic hydrogen generation from water under solar light and the highest amount of hydrogen, i.e. 3218 μmol h(−1) g(−1), is obtained which is 21 times higher than that with pristine MnWO(4). The enhanced photocatalytic activity is ascribed to the formation of a CdS@MnWO(4) nanoheterostructure resulting in efficient spatial separation of photogenerated electron–hole pairs due to vacancy defects. More significantly, direct Z-scheme electron transfer from MnWO(4) to CdS is responsible for the enhanced hydrogen evolution. This work signifies that a CdS decorated MnWO(4) nanoheterostructure has the potential to improve the solar to direct fuel conversion efficiency. |
format | Online Article Text |
id | pubmed-9418746 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | RSC |
record_format | MEDLINE/PubMed |
spelling | pubmed-94187462022-09-20 CdS decorated MnWO(4) nanorod nanoheterostructures: a new 0D–1D hybrid system for enhanced photocatalytic hydrogen production under natural sunlight Sethi, Yogesh A. Kulkarni, Aniruddha K. Ambalkar, Anuradha A. Khore, Supriya K. Gunjal, Aarti R. Gosavi, Suresh W. Kale, Bharat B. Nanoscale Adv Chemistry Constructing a heterostructure is an effective strategy to reduce the electron–hole recombination rate, which enhances photocatalytic activity. Here, we report a facile hydrothermal method to grow CdS nanoparticles on MnWO(4) nanorods and their photocatalytic hydrogen generation under solar light. A structural study shows the decoration of hexagonal CdS nanoparticles on monoclinic MnWO(4). Morphological studies based on FE-TEM analysis confirm the sensitization of CdS nanoparticles (10 nm) on MnWO(4) nanorods of diameter-35 nm with mean length ∼100 nm. The lower PL intensity of MnWO(4) was observed with an increasing amount of CdS nanoparticles, which shows inhibition of the charge carrier recombination rate. A CdS@MnWO(4) narrow band gap semiconductor was employed for photocatalytic hydrogen generation from water under solar light and the highest amount of hydrogen, i.e. 3218 μmol h(−1) g(−1), is obtained which is 21 times higher than that with pristine MnWO(4). The enhanced photocatalytic activity is ascribed to the formation of a CdS@MnWO(4) nanoheterostructure resulting in efficient spatial separation of photogenerated electron–hole pairs due to vacancy defects. More significantly, direct Z-scheme electron transfer from MnWO(4) to CdS is responsible for the enhanced hydrogen evolution. This work signifies that a CdS decorated MnWO(4) nanoheterostructure has the potential to improve the solar to direct fuel conversion efficiency. RSC 2020-12-10 /pmc/articles/PMC9418746/ /pubmed/36131732 http://dx.doi.org/10.1039/d0na00843e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Sethi, Yogesh A. Kulkarni, Aniruddha K. Ambalkar, Anuradha A. Khore, Supriya K. Gunjal, Aarti R. Gosavi, Suresh W. Kale, Bharat B. CdS decorated MnWO(4) nanorod nanoheterostructures: a new 0D–1D hybrid system for enhanced photocatalytic hydrogen production under natural sunlight |
title | CdS decorated MnWO(4) nanorod nanoheterostructures: a new 0D–1D hybrid system for enhanced photocatalytic hydrogen production under natural sunlight |
title_full | CdS decorated MnWO(4) nanorod nanoheterostructures: a new 0D–1D hybrid system for enhanced photocatalytic hydrogen production under natural sunlight |
title_fullStr | CdS decorated MnWO(4) nanorod nanoheterostructures: a new 0D–1D hybrid system for enhanced photocatalytic hydrogen production under natural sunlight |
title_full_unstemmed | CdS decorated MnWO(4) nanorod nanoheterostructures: a new 0D–1D hybrid system for enhanced photocatalytic hydrogen production under natural sunlight |
title_short | CdS decorated MnWO(4) nanorod nanoheterostructures: a new 0D–1D hybrid system for enhanced photocatalytic hydrogen production under natural sunlight |
title_sort | cds decorated mnwo(4) nanorod nanoheterostructures: a new 0d–1d hybrid system for enhanced photocatalytic hydrogen production under natural sunlight |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418746/ https://www.ncbi.nlm.nih.gov/pubmed/36131732 http://dx.doi.org/10.1039/d0na00843e |
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