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Synthesis of gold (Au) Nanoparticles for mercury adsorption

Problem statement: Mercury is not only hazardous to human health and the environment but could also attack equipment components resulting in a mechanical failure and gas leakage. Approach: Describes the preparation of various sizes and shapes of Au nanoparticles for mercury adsorption by using polyo...

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Main Authors: Nor Kamarudin , Khairul Sozana, Mohamad, Mawarni Fazliana
Format: Article
Language:English
Published: Science Publication 2010
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/38426/2/ajassp.2010.835.839
http://eprints.utm.my/id/eprint/38426/
http://www.thescipub.com/abstract/10.3844/ajassp.2010.835.839
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spelling my.utm.384262017-06-07T09:44:14Z http://eprints.utm.my/id/eprint/38426/ Synthesis of gold (Au) Nanoparticles for mercury adsorption Nor Kamarudin , Khairul Sozana Mohamad, Mawarni Fazliana TP Chemical technology Problem statement: Mercury is not only hazardous to human health and the environment but could also attack equipment components resulting in a mechanical failure and gas leakage. Approach: Describes the preparation of various sizes and shapes of Au nanoparticles for mercury adsorption by using polyol method under MW heating. Au nanoparticles have been synthesized by a polyol method under Microwave (MW) heating in the presence of Au seed ([Au]1/[Au]0= 6 of molar ratio) and different Polyvinylpyrrolidone (PVP) concentrations (11.1, 22.2 and 33.3 mM). The amount of mercury adsorbed was determined by analyzing the concentration of mercury solution before and after the contacts with various sizes and shapes of Au nanoparticles. Results: When the lower PVP concentration (11.1 mM) was used, polygonal and spherical nanoparticles were dominantly present, while spherical nanoparticles were preferentially form by using higher PVP concentrations (22.2 and 3.33 mM). It was found that the diameter and length of Au nanoparticles decreased with increasing PVP concentrations. When Au nanoparticles solution was prepared using Au seed, significant changes in sizes and shapes of Au seed occurred. Spherical nanoparticles in the Au seed (22.2 mM) were completely changed to polygonal nanoparticles. The amount of mercury adsorbed using 9 ppm mercury solution on polygonal nanoparticles is higher (64.88%) than spherical nanoparticles (18.77%). Conclusion: These results indicated that mercury adsorption strongly depends on the sizes and shapes of Au nanoparticles. Polygonal nanoparticles adsorbed more mercury than spherical nanoparticles but the amount mercury adsorbed is inversely proportional to their size. Science Publication 2010 Article PeerReviewed text/html en http://eprints.utm.my/id/eprint/38426/2/ajassp.2010.835.839 Nor Kamarudin , Khairul Sozana and Mohamad, Mawarni Fazliana (2010) Synthesis of gold (Au) Nanoparticles for mercury adsorption. American Journal of Applied Sciences, 7 (6). pp. 835-839. ISSN 1546-9239 (Print); 1554-3641 (Electronic) http://www.thescipub.com/abstract/10.3844/ajassp.2010.835.839 DOI:10.3844/ajassp.2010.835.839
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Nor Kamarudin , Khairul Sozana
Mohamad, Mawarni Fazliana
Synthesis of gold (Au) Nanoparticles for mercury adsorption
description Problem statement: Mercury is not only hazardous to human health and the environment but could also attack equipment components resulting in a mechanical failure and gas leakage. Approach: Describes the preparation of various sizes and shapes of Au nanoparticles for mercury adsorption by using polyol method under MW heating. Au nanoparticles have been synthesized by a polyol method under Microwave (MW) heating in the presence of Au seed ([Au]1/[Au]0= 6 of molar ratio) and different Polyvinylpyrrolidone (PVP) concentrations (11.1, 22.2 and 33.3 mM). The amount of mercury adsorbed was determined by analyzing the concentration of mercury solution before and after the contacts with various sizes and shapes of Au nanoparticles. Results: When the lower PVP concentration (11.1 mM) was used, polygonal and spherical nanoparticles were dominantly present, while spherical nanoparticles were preferentially form by using higher PVP concentrations (22.2 and 3.33 mM). It was found that the diameter and length of Au nanoparticles decreased with increasing PVP concentrations. When Au nanoparticles solution was prepared using Au seed, significant changes in sizes and shapes of Au seed occurred. Spherical nanoparticles in the Au seed (22.2 mM) were completely changed to polygonal nanoparticles. The amount of mercury adsorbed using 9 ppm mercury solution on polygonal nanoparticles is higher (64.88%) than spherical nanoparticles (18.77%). Conclusion: These results indicated that mercury adsorption strongly depends on the sizes and shapes of Au nanoparticles. Polygonal nanoparticles adsorbed more mercury than spherical nanoparticles but the amount mercury adsorbed is inversely proportional to their size.
format Article
author Nor Kamarudin , Khairul Sozana
Mohamad, Mawarni Fazliana
author_facet Nor Kamarudin , Khairul Sozana
Mohamad, Mawarni Fazliana
author_sort Nor Kamarudin , Khairul Sozana
title Synthesis of gold (Au) Nanoparticles for mercury adsorption
title_short Synthesis of gold (Au) Nanoparticles for mercury adsorption
title_full Synthesis of gold (Au) Nanoparticles for mercury adsorption
title_fullStr Synthesis of gold (Au) Nanoparticles for mercury adsorption
title_full_unstemmed Synthesis of gold (Au) Nanoparticles for mercury adsorption
title_sort synthesis of gold (au) nanoparticles for mercury adsorption
publisher Science Publication
publishDate 2010
url http://eprints.utm.my/id/eprint/38426/2/ajassp.2010.835.839
http://eprints.utm.my/id/eprint/38426/
http://www.thescipub.com/abstract/10.3844/ajassp.2010.835.839
_version_ 1643650244828725248
score 13.211869

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