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Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites

Problem statement: Gamma irradiation has been successfully used to prepare a spherical cadmium sulfide CdS/Poly Vinylpyrolidone (PVP) quantum dots nanoparticles with enhancement of their optical band gap energy and thermal properties at room temperature and under ambient pressure. Sodium thiosulfate...

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Main Authors: Gasaymeh, Shawkat Salameh, Radiman, Shahidan, Lee, Yook Heng, Saion, Elias
Format: Article
Language:English
Published: Science Publications 2010
Online Access:http://psasir.upm.edu.my/id/eprint/14840/1/ajassp.2010.500.508.pdf
http://psasir.upm.edu.my/id/eprint/14840/
http://www.thescipub.com/abstract/10.3844/ajassp.2010.500.508
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spelling my.upm.eprints.148402017-11-27T05:54:31Z http://psasir.upm.edu.my/id/eprint/14840/ Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites Gasaymeh, Shawkat Salameh Radiman, Shahidan Lee, Yook Heng Saion, Elias Problem statement: Gamma irradiation has been successfully used to prepare a spherical cadmium sulfide CdS/Poly Vinylpyrolidone (PVP) quantum dots nanoparticles with enhancement of their optical band gap energy and thermal properties at room temperature and under ambient pressure. Sodium thiosulfate was used as a sulfur source in an aqueous solution. The formation of lower band gap energy of CdS/PVP nanoparticles and thermal stability can be controlled by using different irradiation doses. TEM images showed that the CdS/PVP particle size tends to be smaller and with better distribution as irradiation dose increases. Approach: Gamma (γ) irradiation offered many advantages for the preparation of metal nanoparticles by producing large number of hydrated electrons during γ-ray irradiation, which can reduce the metal ions to zero valiant metal particles. Results: CdS/PVP nanoparticles were successfully prepared in one-step by γ-irradiation technique in an aqueous system at room temperature and under ambient pressure. The particle size was found to be less than 10 nm based on the Transmission Electron Microscopy (TEM) that depended on the irradiation doses value, which showed a well distribution with a controlled size as doses change. The presence of PVP polymer was considered an important reason that influenced the shape and the distribution of those nanoparticles. The optical band gap energy of those nanoparticles was calculated by using the UV-VIS absorption spectra. Thermal analysis TGA showed that the composite had a higher degradation temperature than the PVP alone. A possible mechanism of the formation of cadmium sulfide by irradiation system was proposed. Conclusion: This result indicated that CdSO4 can effectively dope PVP and enhance the optical and thermal properties. In addition, γ-irradiation is an effective technique for preparing inorganic/organic nanocomposites. Science Publications 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/14840/1/ajassp.2010.500.508.pdf Gasaymeh, Shawkat Salameh and Radiman, Shahidan and Lee, Yook Heng and Saion, Elias (2010) Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites. American Journal of Applied Sciences, 7 (4). pp. 500-508. ISSN 1546-9239; ESSN: 1554-3641 http://www.thescipub.com/abstract/10.3844/ajassp.2010.500.508 10.3844/ajassp.2010.500.508
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Problem statement: Gamma irradiation has been successfully used to prepare a spherical cadmium sulfide CdS/Poly Vinylpyrolidone (PVP) quantum dots nanoparticles with enhancement of their optical band gap energy and thermal properties at room temperature and under ambient pressure. Sodium thiosulfate was used as a sulfur source in an aqueous solution. The formation of lower band gap energy of CdS/PVP nanoparticles and thermal stability can be controlled by using different irradiation doses. TEM images showed that the CdS/PVP particle size tends to be smaller and with better distribution as irradiation dose increases. Approach: Gamma (γ) irradiation offered many advantages for the preparation of metal nanoparticles by producing large number of hydrated electrons during γ-ray irradiation, which can reduce the metal ions to zero valiant metal particles. Results: CdS/PVP nanoparticles were successfully prepared in one-step by γ-irradiation technique in an aqueous system at room temperature and under ambient pressure. The particle size was found to be less than 10 nm based on the Transmission Electron Microscopy (TEM) that depended on the irradiation doses value, which showed a well distribution with a controlled size as doses change. The presence of PVP polymer was considered an important reason that influenced the shape and the distribution of those nanoparticles. The optical band gap energy of those nanoparticles was calculated by using the UV-VIS absorption spectra. Thermal analysis TGA showed that the composite had a higher degradation temperature than the PVP alone. A possible mechanism of the formation of cadmium sulfide by irradiation system was proposed. Conclusion: This result indicated that CdSO4 can effectively dope PVP and enhance the optical and thermal properties. In addition, γ-irradiation is an effective technique for preparing inorganic/organic nanocomposites.
format Article
author Gasaymeh, Shawkat Salameh
Radiman, Shahidan
Lee, Yook Heng
Saion, Elias
spellingShingle Gasaymeh, Shawkat Salameh
Radiman, Shahidan
Lee, Yook Heng
Saion, Elias
Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites
author_facet Gasaymeh, Shawkat Salameh
Radiman, Shahidan
Lee, Yook Heng
Saion, Elias
author_sort Gasaymeh, Shawkat Salameh
title Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites
title_short Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites
title_full Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites
title_fullStr Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites
title_full_unstemmed Gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (CdS)/poly (Vinyl pyrolidone) nanocomposites
title_sort gamma irradiation synthesis and influence the optical and thermal properties of cadmium sulfide (cds)/poly (vinyl pyrolidone) nanocomposites
publisher Science Publications
publishDate 2010
url http://psasir.upm.edu.my/id/eprint/14840/1/ajassp.2010.500.508.pdf
http://psasir.upm.edu.my/id/eprint/14840/
http://www.thescipub.com/abstract/10.3844/ajassp.2010.500.508
_version_ 1643825754959511552
score 13.211869

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