Monodispersity and stability of Gold nanoparticles stabilized by using polyvinyl alcohol

Gold nanoparticles (Au NPs) have been prepared by reduction of hydrogen tetrachloroaurate aqueous solution (HAuCl4) with trisodium citrate and stabilized with polyvinyl alcohol (PVA). The optimization of Au NPs was obtained by varying the volume of trisodium citrate from 0.4 - 0.8 mL, and characteri...

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Main Authors: Pimpang P., Choopun S.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-78649772601&partnerID=40&md5=b5115aa8916630d382d0419165babde0
http://cmuir.cmu.ac.th/handle/6653943832/6636
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spelling th-cmuir.6653943832-66362014-08-30T03:51:01Z Monodispersity and stability of Gold nanoparticles stabilized by using polyvinyl alcohol Pimpang P. Choopun S. Gold nanoparticles (Au NPs) have been prepared by reduction of hydrogen tetrachloroaurate aqueous solution (HAuCl4) with trisodium citrate and stabilized with polyvinyl alcohol (PVA). The optimization of Au NPs was obtained by varying the volume of trisodium citrate from 0.4 - 0.8 mL, and characterized by UV-vis spectroscopy and transmission electron microscopy (TEM). It was found that the absorbance spectra exhibited its absorption peak at around 520 nm for all cases, with a minimum value at 0.7 mL of trisodium citrate. This suggested that the size of Au NPs to be smallest at condition 0.7 mL trisodium citrate, thereby indicating the optimum conditions. Stability of Au NPs was achieved by monitoring absorbance of Au NPs over regular time periods. It was found that wavelength at maximum absorbance changed with time after synthesis except for the 0.7 mL condition which was stable. This suggested that, at condition 0.7 mL, the Au NPs were quite stable up to 700 hours; this could be explored for further applications. Moreover, TEM results showed Au NPs obtained at optimum condition exhibited near spherical shapes with a mean diameter and standard deviation of 4.5 and 1.4 nm, respectively. Also moreover, FT-IR result suggested that Au NPs were coated with a PVA layer. 2014-08-30T03:51:01Z 2014-08-30T03:51:01Z 2011 Article 1252526 http://www.scopus.com/inward/record.url?eid=2-s2.0-78649772601&partnerID=40&md5=b5115aa8916630d382d0419165babde0 http://cmuir.cmu.ac.th/handle/6653943832/6636 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description Gold nanoparticles (Au NPs) have been prepared by reduction of hydrogen tetrachloroaurate aqueous solution (HAuCl4) with trisodium citrate and stabilized with polyvinyl alcohol (PVA). The optimization of Au NPs was obtained by varying the volume of trisodium citrate from 0.4 - 0.8 mL, and characterized by UV-vis spectroscopy and transmission electron microscopy (TEM). It was found that the absorbance spectra exhibited its absorption peak at around 520 nm for all cases, with a minimum value at 0.7 mL of trisodium citrate. This suggested that the size of Au NPs to be smallest at condition 0.7 mL trisodium citrate, thereby indicating the optimum conditions. Stability of Au NPs was achieved by monitoring absorbance of Au NPs over regular time periods. It was found that wavelength at maximum absorbance changed with time after synthesis except for the 0.7 mL condition which was stable. This suggested that, at condition 0.7 mL, the Au NPs were quite stable up to 700 hours; this could be explored for further applications. Moreover, TEM results showed Au NPs obtained at optimum condition exhibited near spherical shapes with a mean diameter and standard deviation of 4.5 and 1.4 nm, respectively. Also moreover, FT-IR result suggested that Au NPs were coated with a PVA layer.
format Article
author Pimpang P.
Choopun S.
spellingShingle Pimpang P.
Choopun S.
Monodispersity and stability of Gold nanoparticles stabilized by using polyvinyl alcohol
author_facet Pimpang P.
Choopun S.
author_sort Pimpang P.
title Monodispersity and stability of Gold nanoparticles stabilized by using polyvinyl alcohol
title_short Monodispersity and stability of Gold nanoparticles stabilized by using polyvinyl alcohol
title_full Monodispersity and stability of Gold nanoparticles stabilized by using polyvinyl alcohol
title_fullStr Monodispersity and stability of Gold nanoparticles stabilized by using polyvinyl alcohol
title_full_unstemmed Monodispersity and stability of Gold nanoparticles stabilized by using polyvinyl alcohol
title_sort monodispersity and stability of gold nanoparticles stabilized by using polyvinyl alcohol
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-78649772601&partnerID=40&md5=b5115aa8916630d382d0419165babde0
http://cmuir.cmu.ac.th/handle/6653943832/6636
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