Preparation and characterization of size controllable spherical silver nanoparticles

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2014,（3）
• 页码范围: 164-167
• 页数: 4页
• 语种: 中文
• DOI: 10.1007/s11801-014-4005-y

摘要

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 ℃ is better to improve silver NPs in shape to nearly sphere,concentrate size distribution and reduce aggregation than the aging temperature of 25 ℃.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 ℃,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.