Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method

Colloidal gold nanoparticles have been successfully synthesized using electrodissolution-reduction process that consists of a simple two-electrode cells connected to a DC power supply. Throughout the process, bulk gold at the anode was oxidized into gold cations which then reacted with the chloride...

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Main Authors:	Haiza, Haroon, Yaacob, Iskandar Idris, Ahmad Azhar, Ahmad Zahirani
Format:	Conference or Workshop Item
Language:	English English
Published:	Trans Tech Publications 2016
Subjects:	TA401 Materials of engineering and construction
Online Access:	http://irep.iium.edu.my/48162/ http://irep.iium.edu.my/48162/ http://irep.iium.edu.my/48162/ http://irep.iium.edu.my/48162/1/MSF.840.267.pdf http://irep.iium.edu.my/48162/4/48162_Effect%20of%20citrate%20concentration_Scopus.pdf

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recordtype	eprints
spelling	iium-481622017-04-21T03:45:09Z http://irep.iium.edu.my/48162/ Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method Haiza, Haroon Yaacob, Iskandar Idris Ahmad Azhar, Ahmad Zahirani TA401 Materials of engineering and construction Colloidal gold nanoparticles have been successfully synthesized using electrodissolution-reduction process that consists of a simple two-electrode cells connected to a DC power supply. Throughout the process, bulk gold at the anode was oxidized into gold cations which then reacted with the chloride ions to form aurochloride complex. The complex ions were then reduced by the citrate ion to form colloidal gold nanoparticles. The size and shape of the nanoparticles were modulated by varying the citrate concentration. The colloidal gold nanoparticles obtained were characterized by field-emission scanning electron microscope (FESEM), transmission electron microscope (TEM) and ultraviolet-visible spectrophotometer (UV-Vis). From FESEM analysis, it was found that by increasing the citrate concentration, the size of colloidal gold nanoparticles produced marginally increased. The mean sizes of gold nanoparticles were roughly about 18.7 nm, 19.3 nm, 20.5 nm and 21.3 nm for citrate concentrations of 0.05 M, 0.10 M, 0.15 M and 0.20 M, respectively. However, sample prepared without the addition of citrate, remained colorless indicating that aurochloride complex ions were not reduced to colloidal gold nanoparticles. TEM micrographs showed that the shape of gold nanoparticles obtained is almost spherical. The characteristic peaks of UV-Vis spectra revealed that the suspension was indeed colloidal gold nanoparticles. Trans Tech Publications 2016-01 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/48162/1/MSF.840.267.pdf application/pdf en http://irep.iium.edu.my/48162/4/48162_Effect%20of%20citrate%20concentration_Scopus.pdf Haiza, Haroon and Yaacob, Iskandar Idris and Ahmad Azhar, Ahmad Zahirani (2016) Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method. In: Seminar on Advanced Materials haracterization Techniques in Research, Industry and Nuclear Applications, AMCT 2015, Selangor. http://www.scientific.net/MSF.840.267 10.4028/www.scientific.net/MSF.840.267
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TA401 Materials of engineering and construction
spellingShingle	TA401 Materials of engineering and construction Haiza, Haroon Yaacob, Iskandar Idris Ahmad Azhar, Ahmad Zahirani Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method
description	Colloidal gold nanoparticles have been successfully synthesized using electrodissolution-reduction process that consists of a simple two-electrode cells connected to a DC power supply. Throughout the process, bulk gold at the anode was oxidized into gold cations which then reacted with the chloride ions to form aurochloride complex. The complex ions were then reduced by the citrate ion to form colloidal gold nanoparticles. The size and shape of the nanoparticles were modulated by varying the citrate concentration. The colloidal gold nanoparticles obtained were characterized by field-emission scanning electron microscope (FESEM), transmission electron microscope (TEM) and ultraviolet-visible spectrophotometer (UV-Vis). From FESEM analysis, it was found that by increasing the citrate concentration, the size of colloidal gold nanoparticles produced marginally increased. The mean sizes of gold nanoparticles were roughly about 18.7 nm, 19.3 nm, 20.5 nm and 21.3 nm for citrate concentrations of 0.05 M, 0.10 M, 0.15 M and 0.20 M, respectively. However, sample prepared without the addition of citrate, remained colorless indicating that aurochloride complex ions were not reduced to colloidal gold nanoparticles. TEM micrographs showed that the shape of gold nanoparticles obtained is almost spherical. The characteristic peaks of UV-Vis spectra revealed that the suspension was indeed colloidal gold nanoparticles.
format	Conference or Workshop Item
author	Haiza, Haroon Yaacob, Iskandar Idris Ahmad Azhar, Ahmad Zahirani
author_facet	Haiza, Haroon Yaacob, Iskandar Idris Ahmad Azhar, Ahmad Zahirani
author_sort	Haiza, Haroon
title	Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method
title_short	Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method
title_full	Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method
title_fullStr	Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method
title_full_unstemmed	Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method
title_sort	effect of citrate concentration on colloidal gold (au) nanoparticles produced using electro-dissolution-reduction method
publisher	Trans Tech Publications
publishDate	2016
url	http://irep.iium.edu.my/48162/ http://irep.iium.edu.my/48162/ http://irep.iium.edu.my/48162/ http://irep.iium.edu.my/48162/1/MSF.840.267.pdf http://irep.iium.edu.my/48162/4/48162_Effect%20of%20citrate%20concentration_Scopus.pdf
first_indexed	2023-09-18T21:08:23Z
last_indexed	2023-09-18T21:08:23Z
_version_	1777411087046541312

Effect of citrate concentration on colloidal gold (Au) nanoparticles produced using electro-dissolution-reduction method

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