Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles
Photocatalysis based on semiconductor quantum dots which utilize the solar energy can be used for the elimination of pollutants from aqueous media and applied for water purification. Degradation of dyes is a standard method to check the photocatalytic activity of any type of photocatalyst. In this p...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/52302/1/Photocatalytic%20degradation%20of%20methylene%20blue%20under%20visible%20light%20using%20PVP-capped%20ZnS%20and%20CdS%20nanoparticles.pdf |
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| author | Soltani, Nayereh Saion, Elias Mat Yunus, Wan Mahmood Navasery, Manizheh Bahmanrokh, Ghazaleh Haghiri, Maryam Erfani Zare, Mohammad Reza Gharibshahi, Elham |
| author_facet | Soltani, Nayereh Saion, Elias Mat Yunus, Wan Mahmood Navasery, Manizheh Bahmanrokh, Ghazaleh Haghiri, Maryam Erfani Zare, Mohammad Reza Gharibshahi, Elham |
| author_sort | Soltani, Nayereh |
| collection | UPM |
| description | Photocatalysis based on semiconductor quantum dots which utilize the solar energy can be used for the elimination of pollutants from aqueous media and applied for water purification. Degradation of dyes is a standard method to check the photocatalytic activity of any type of photocatalyst. In this paper polyvinyl pyrrolidone (PVP)-capped ZnS and CdS nanoparticles were prepared by a simple microwave irradiation method and studied in detail for their photocatalytic activity in visible range. The obtained nanoparticles were characterized by XRD, TEM, UV–Vis and EDX. The prepared PVP-capped ZnS and CdS nanoparticles have average sizes of ∼5.1 and 18.3 nm with cubic and hexagonal crystalline structures, respectively. PVP capped CdS nanoparticles exhibited a unique property of optical absorption in visible region with a wave length below than 460 nm followed by a clear long tail up to 700 nm and showed excellent activity toward degradation of dye under visible light illumination. The photocatalytic activity of PVP-capped CdS nanoparticles was found to be improved by mixing with appropriate amount of PVP-capped ZnS nanoprticles. From the study of variation in weight percentages of PVP-capped ZnS nanoparticles, the physical mixture with 20% of PVP-capped ZnS nanoparticles was found to be very efficient for degradation of methylene blue. In this case the degradation efficiency after 6 h illumination was about 81%. |
| first_indexed | 2024-03-06T09:15:31Z |
| format | Article |
| id | upm.eprints-52302 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:15:31Z |
| publishDate | 2013 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-523022017-06-05T05:41:49Z http://psasir.upm.edu.my/id/eprint/52302/ Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles Soltani, Nayereh Saion, Elias Mat Yunus, Wan Mahmood Navasery, Manizheh Bahmanrokh, Ghazaleh Haghiri, Maryam Erfani Zare, Mohammad Reza Gharibshahi, Elham Photocatalysis based on semiconductor quantum dots which utilize the solar energy can be used for the elimination of pollutants from aqueous media and applied for water purification. Degradation of dyes is a standard method to check the photocatalytic activity of any type of photocatalyst. In this paper polyvinyl pyrrolidone (PVP)-capped ZnS and CdS nanoparticles were prepared by a simple microwave irradiation method and studied in detail for their photocatalytic activity in visible range. The obtained nanoparticles were characterized by XRD, TEM, UV–Vis and EDX. The prepared PVP-capped ZnS and CdS nanoparticles have average sizes of ∼5.1 and 18.3 nm with cubic and hexagonal crystalline structures, respectively. PVP capped CdS nanoparticles exhibited a unique property of optical absorption in visible region with a wave length below than 460 nm followed by a clear long tail up to 700 nm and showed excellent activity toward degradation of dye under visible light illumination. The photocatalytic activity of PVP-capped CdS nanoparticles was found to be improved by mixing with appropriate amount of PVP-capped ZnS nanoprticles. From the study of variation in weight percentages of PVP-capped ZnS nanoparticles, the physical mixture with 20% of PVP-capped ZnS nanoparticles was found to be very efficient for degradation of methylene blue. In this case the degradation efficiency after 6 h illumination was about 81%. Elsevier 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/52302/1/Photocatalytic%20degradation%20of%20methylene%20blue%20under%20visible%20light%20using%20PVP-capped%20ZnS%20and%20CdS%20nanoparticles.pdf Soltani, Nayereh and Saion, Elias and Mat Yunus, Wan Mahmood and Navasery, Manizheh and Bahmanrokh, Ghazaleh and Haghiri, Maryam Erfani and Zare, Mohammad Reza and Gharibshahi, Elham (2013) Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles. Solar Energy, 97. pp. 147-154. ISSN 0038-092X; ESSN: 1471-1257 http://www.sciencedirect.com/science/article/pii/S0038092X13003332 10.1016/j.solener.2013.08.023 |
| spellingShingle | Soltani, Nayereh Saion, Elias Mat Yunus, Wan Mahmood Navasery, Manizheh Bahmanrokh, Ghazaleh Haghiri, Maryam Erfani Zare, Mohammad Reza Gharibshahi, Elham Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles |
| title | Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles |
| title_full | Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles |
| title_fullStr | Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles |
| title_full_unstemmed | Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles |
| title_short | Photocatalytic degradation of methylene blue under visible light using PVP-capped ZnS and CdS nanoparticles |
| title_sort | photocatalytic degradation of methylene blue under visible light using pvp capped zns and cds nanoparticles |
| url | http://psasir.upm.edu.my/id/eprint/52302/1/Photocatalytic%20degradation%20of%20methylene%20blue%20under%20visible%20light%20using%20PVP-capped%20ZnS%20and%20CdS%20nanoparticles.pdf |
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