Visible-light-induced photoelectric gas sensing to formaldehyde based on CdS nanoparticles/ZnO heterostructures
A visible-light-induced gas sensing element based on the heterostructures of CdS nanoparticles (NPs)/ZnO microcrystals has been successfully developed. Commercial ZnO microcrystals were coated with CdS nanoparticles by a sonochemical method to form the heterostructures. Compared with native CdS NPs,...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/42423 |
| _version_ | 1848756415655575552 |
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| author | Zhai, J. Wang, D. Peng, L. Lin, Y. Li, Xin Yong Xie, T. |
| author_facet | Zhai, J. Wang, D. Peng, L. Lin, Y. Li, Xin Yong Xie, T. |
| author_sort | Zhai, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A visible-light-induced gas sensing element based on the heterostructures of CdS nanoparticles (NPs)/ZnO microcrystals has been successfully developed. Commercial ZnO microcrystals were coated with CdS nanoparticles by a sonochemical method to form the heterostructures. Compared with native CdS NPs, the as-obtained CdS NPs/ZnO showed enhanced photocurrent intensity. And the heterostructures-based element exhibited an excellent performance of photoelectric gas sensing to formaldehyde induced by visible-light. Moreover, the photocurrent intensity and sensitivity to formaldehyde were controllable by tuning the amount of CdS NPs attached on the surface of ZnO microcrystals. A possible explanation on the sensing mechanism has been proposed. In addition, the gas sensing element possessed good reproducibility. Our results demonstrate that the heterostructures of CdS NPs/ZnO is an efficient and promising material for visible-light-induced photoelectric gas sensors working at room temperature. © 2010 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T09:11:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-42423 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:11:50Z |
| publishDate | 2010 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-424232017-09-13T14:24:47Z Visible-light-induced photoelectric gas sensing to formaldehyde based on CdS nanoparticles/ZnO heterostructures Zhai, J. Wang, D. Peng, L. Lin, Y. Li, Xin Yong Xie, T. A visible-light-induced gas sensing element based on the heterostructures of CdS nanoparticles (NPs)/ZnO microcrystals has been successfully developed. Commercial ZnO microcrystals were coated with CdS nanoparticles by a sonochemical method to form the heterostructures. Compared with native CdS NPs, the as-obtained CdS NPs/ZnO showed enhanced photocurrent intensity. And the heterostructures-based element exhibited an excellent performance of photoelectric gas sensing to formaldehyde induced by visible-light. Moreover, the photocurrent intensity and sensitivity to formaldehyde were controllable by tuning the amount of CdS NPs attached on the surface of ZnO microcrystals. A possible explanation on the sensing mechanism has been proposed. In addition, the gas sensing element possessed good reproducibility. Our results demonstrate that the heterostructures of CdS NPs/ZnO is an efficient and promising material for visible-light-induced photoelectric gas sensors working at room temperature. © 2010 Elsevier B.V. All rights reserved. 2010 Journal Article http://hdl.handle.net/20.500.11937/42423 10.1016/j.snb.2010.03.003 Elsevier restricted |
| spellingShingle | Zhai, J. Wang, D. Peng, L. Lin, Y. Li, Xin Yong Xie, T. Visible-light-induced photoelectric gas sensing to formaldehyde based on CdS nanoparticles/ZnO heterostructures |
| title | Visible-light-induced photoelectric gas sensing to formaldehyde based on CdS nanoparticles/ZnO heterostructures |
| title_full | Visible-light-induced photoelectric gas sensing to formaldehyde based on CdS nanoparticles/ZnO heterostructures |
| title_fullStr | Visible-light-induced photoelectric gas sensing to formaldehyde based on CdS nanoparticles/ZnO heterostructures |
| title_full_unstemmed | Visible-light-induced photoelectric gas sensing to formaldehyde based on CdS nanoparticles/ZnO heterostructures |
| title_short | Visible-light-induced photoelectric gas sensing to formaldehyde based on CdS nanoparticles/ZnO heterostructures |
| title_sort | visible-light-induced photoelectric gas sensing to formaldehyde based on cds nanoparticles/zno heterostructures |
| url | http://hdl.handle.net/20.500.11937/42423 |