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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Preparation and characterization of silver nanoparticles by chemical reduction method
Colloids and Surfaces B: Biointerfaces, Volume 82, No. 2, Year 2011
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Description
Silver nanoparticles were prepared by the reduction of AgNO3 with aniline in dilute aqueous solutions containing cetyltrimethlyammonium bromide, CTAB. Nanoparticles growth was assessed by UV-vis spectroscopy and the average particle size and the size distribution were determined from transmission electron microscopy, TEM. As the reaction proceeds, a typical plasmon absorption band at 390-450nm appears for the silver nanoparticles and the intensities increase with the time. Effects of [aniline], [CTAB] and [Ag+] on the particle formation rate were analyzed. The apparent rate constants for the formation of silver nanoparticles first increased until it reached a maximum then decreased with [aniline]. TEM photographs indicate that the silver sol consist of well dispersed agglomerates of spherical shape nanoparticles with particle size range from 10 to 30nm. Aniline concentrations have no significant effect on the shape, size and the size distribution of Ag-nanoparticles. Aniline acts as a reducing as well as adsorbing agent in the preparation of roughly spherical, agglomerated and face-centered-cubic silver nanoparticles. © 2010 Elsevier B.V.
Authors & Co-Authors
Khan, Zaheer
Saudi Arabia, Jeddah
King Abdulaziz University
Al-Thabaiti, Shaeel Ahmed
Saudi Arabia, Jeddah
King Abdulaziz University
Obaid, Abdullah Yousif
Saudi Arabia, Jeddah
King Abdulaziz University
Al-Youbi, Abdulrahman Obaid
Saudi Arabia, Jeddah
King Abdulaziz University
Statistics
Citations: 247
Authors: 4
Affiliations: 1
Identifiers
Doi:
10.1016/j.colsurfb.2010.10.008
ISSN:
09277765