Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles
Cubic structure of spherical ZnS nanoparticles with relatively small size and narrow size distribution were synthesized via microwave-hydrothermal (M-H) and microwave-polyol (M-P) methods from zinc acetate and thioacetamide as starting materials. Distilled water and ethylene glycol were used as solv...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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National Institute of Materials Physics, National Institute of Optoelectronics
2012
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| Online Access: | http://psasir.upm.edu.my/id/eprint/52267/1/Microwave%20irradiation%20effects%20on%20hydrothermal%20and%20polyol%20synthesis%20of%20ZnS%20nanoparticles.pdf |
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| author | Soltani, Nayereh Saion, Elias Hussein, Mohd Zobir Bahrami, Afarin Naghavi, Kazem Yunus, Robiah |
| author_facet | Soltani, Nayereh Saion, Elias Hussein, Mohd Zobir Bahrami, Afarin Naghavi, Kazem Yunus, Robiah |
| author_sort | Soltani, Nayereh |
| collection | UPM |
| description | Cubic structure of spherical ZnS nanoparticles with relatively small size and narrow size distribution were synthesized via microwave-hydrothermal (M-H) and microwave-polyol (M-P) methods from zinc acetate and thioacetamide as starting materials. Distilled water and ethylene glycol were used as solvents for the M-H and M-P method respectively. To monitor the effect of microwave irradiation, the reactions were carried out in different irradiation time from 5 to 40 min. An increase in irradiation time increases the reaction yield and the average particle size, which subsequently decreases the optical band gap. ZnS nanoparticles synthesized by M-H method have narrower size distribution between 3 and 7 nm, while those synthesized by M-P method were between 2 and 9 nm. Moreover, the formation of hierarchical nanoballs ZnS were observed in the M-H method after 25 min irradiation time. Because of lower dielectric constant, higher dielectric loss, and higher boiling point of ethylene glycol compared to water, in the M-P method the heating rate and final temperature are higher than in M-H method, leading to the decomposition of thiocetamide, promoting higher rate of nucleation. ZnS nanocrystals synthesized with the polyol method have a higher degree of crystallinity compare with those synthesized using the hydrothermal method. |
| first_indexed | 2024-03-06T09:15:24Z |
| format | Article |
| id | upm.eprints-52267 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:15:24Z |
| publishDate | 2012 |
| publisher | National Institute of Materials Physics, National Institute of Optoelectronics |
| record_format | dspace |
| spelling | upm.eprints-522672017-06-05T05:38:24Z http://psasir.upm.edu.my/id/eprint/52267/ Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles Soltani, Nayereh Saion, Elias Hussein, Mohd Zobir Bahrami, Afarin Naghavi, Kazem Yunus, Robiah Cubic structure of spherical ZnS nanoparticles with relatively small size and narrow size distribution were synthesized via microwave-hydrothermal (M-H) and microwave-polyol (M-P) methods from zinc acetate and thioacetamide as starting materials. Distilled water and ethylene glycol were used as solvents for the M-H and M-P method respectively. To monitor the effect of microwave irradiation, the reactions were carried out in different irradiation time from 5 to 40 min. An increase in irradiation time increases the reaction yield and the average particle size, which subsequently decreases the optical band gap. ZnS nanoparticles synthesized by M-H method have narrower size distribution between 3 and 7 nm, while those synthesized by M-P method were between 2 and 9 nm. Moreover, the formation of hierarchical nanoballs ZnS were observed in the M-H method after 25 min irradiation time. Because of lower dielectric constant, higher dielectric loss, and higher boiling point of ethylene glycol compared to water, in the M-P method the heating rate and final temperature are higher than in M-H method, leading to the decomposition of thiocetamide, promoting higher rate of nucleation. ZnS nanocrystals synthesized with the polyol method have a higher degree of crystallinity compare with those synthesized using the hydrothermal method. National Institute of Materials Physics, National Institute of Optoelectronics 2012 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/52267/1/Microwave%20irradiation%20effects%20on%20hydrothermal%20and%20polyol%20synthesis%20of%20ZnS%20nanoparticles.pdf Soltani, Nayereh and Saion, Elias and Hussein, Mohd Zobir and Bahrami, Afarin and Naghavi, Kazem and Yunus, Robiah (2012) Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles. Chalcogenide Letters, 9 (6). pp. 265-274. ISSN 1584-8663 http://chalcogen.ro/index.php/journals/chalcogenide-letters/11-cl/104-volume-9-number-6-june-2012 |
| spellingShingle | Soltani, Nayereh Saion, Elias Hussein, Mohd Zobir Bahrami, Afarin Naghavi, Kazem Yunus, Robiah Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles |
| title | Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles |
| title_full | Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles |
| title_fullStr | Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles |
| title_full_unstemmed | Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles |
| title_short | Microwave irradiation effects on hydrothermal and polyol synthesis of ZnS nanoparticles |
| title_sort | microwave irradiation effects on hydrothermal and polyol synthesis of zns nanoparticles |
| url | http://psasir.upm.edu.my/id/eprint/52267/1/Microwave%20irradiation%20effects%20on%20hydrothermal%20and%20polyol%20synthesis%20of%20ZnS%20nanoparticles.pdf |
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