光电子快报(英文版), 2014, 10 (3): 164, Published Online: Oct. 12, 2017
Preparation and characterization of size controllable spherical silver nanoparticles
Abstract
By adjusting pH values of reactant system, the mass ratio of stabilizer/water and aging temperature, size controllable spherical silver nanoparticles (NPs) were synthesized. The properties of silver NPs are characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and ultraviolet visible (UV-VIS) absorption spectra. Within the pH values of 7.0-11.0, the aging temperature of 80 °C is better to improve silver NPs in shape to nearly sphere, concentrate size distribution and reduce aggregation than the aging temperature of 25 °C. The shape and dispersibility of silver NPs are the best when the pH of the reactant system is within 7.0-8.0. With pH of 7.5, aging at 80 °C, and stabilizer/ water mass ratio of 1%, the spherical silver NPs with sizes of 50-70 nm were synthesized. The results are promising to be used to synthesize core/shell NPs when silver NPs are as core.
YANG Ai-ling, LI Shun-pin, WANG Yu-jin, BAO Xi-chang, YANG Ren-qiang. Preparation and characterization of size controllable spherical silver nanoparticles[J]. 光电子快报(英文版), 2014, 10(3): 164.