Document Details Document Type : Article In Journal  Document Title : Growth of Ag-nanoparticles using aspartic acid in aqueous solutions Growth of Ag-nanoparticles using aspartic acid in aqueous solutions   Subject : Chemistry  Document Language : English  Abstract : Spectrophotometric, kinetic, and transmission electron microscopic (TEM) data for the formation of Ag-nanoparticles using aspartic acid (Asp) as reductant are reported for the first time. In the formation of transparent silver sols, an alkaline medium is required. The silver nanoparticles are spherical, uniform particle size, and strongly depend on the [Asp]. The apparent rate constant decreases with [Asp] (from 4.0 to 24.0×10-4moldm-3, the rate constants decreased from 2.6×10-4 to 0.3×10-4s-1). For a certain reaction time, i.e., 30min, the absorbance of the silver sol first increased until it reached a maximum, and then decreased with [Asp]. Kinetic and TEM results indicate that the size of the Ag-nanoparticles depends on the [Asp]. It is proposed that the oxidation of Asp occurs by the adsorbed Ag+ ions on the surface of Ag2O particles.  ISSN : 0021-9797  Journal Name : Journal of Colloid and Interface Science  Volume : 354  Issue Number : 1  Publishing Year : 1432 AH 2011 AD  Article Type : Article  Added Date : Saturday, February 11, 2012  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email Abu Rafey Rafey, Abu Researcher Doctorate   K B L Shrivastavaa Shrivastavaa, K B L Researcher Doctorate   Sayed Aftab Iqbal Iqbal, Sayed Aftab Researcher Doctorate   ظهير خان Khan, Zaheer Researcher Doctorate drkhanchem@yahoo.co.in Files File Name Type Description  32249.pdf pdf Abstract Back To Researches Page