Preparation of nanosized gold particles in a biopolymer using UV photoactivation.
Gold nanoparticles have been prepared by UV photoactivation in the presence of a biopolymer, sodium alginate. The particles are characterized by UV-vis spectra and TEM studies. Both particle size and the UV-visible absorption peak are dependent on the sodium alginate concentration. The effects of various other parameters such as change of light source, cell material of the reaction chamber, heating effect, irradiation time, and HAuCl4 concentration are studied. The particles are spherical and in situ stabilized by the biopolymer. The method is very simple and reproducible.
Pal
Anjali
A
Department of Civil Engineering, Indian Institute of Technology, Kharagpur 721302, India. anjalipal@civil.iitkgp.ernet.in
Esumi
Kunio
K
Pal
Tarasankar
T
D000464:Alginates / Q000737:chemistry / Q000528:radiation effects; D001704:Biopolymers / Q000737:chemistry / Q000528:radiation effects; D020723:Glucuronic Acid / Q000737:chemistry / Q000528:radiation effects; D006046:Gold / Q000737:chemistry / Q000528:radiation effects; D006603:Hexuronic Acids / Q000737:chemistry / Q000528:radiation effects; D046529:Microscopy, Electron, Transmission / Q000379:methods; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013499:Surface Properties; D014466:Ultraviolet Rays
D000464:Alginates; D001704:Biopolymers; D006603:Hexuronic Acids; D006046:Gold; D020723:Glucuronic Acid