海藻酸钠为保护剂葡萄糖为还原剂合成单分散银纳米粒子（英文）  

Sodium Alginate Mediated Route for the Synthesis of Monodisperse Silver Nanoparticles Using Glucose as Reducing Agents

作　　者：董春法[1,2] 张祥林[1] 蔡昊[1] 曹传亮[1] 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074 [2]湖北理工学院,湖北黄石435003

出　　处：《稀有金属材料与工程》2016年第2期261-266,共6页Rare Metal Materials and Engineering

基　　金：7th European Community Framework Marie Curie International Research Staff Exchange Scheme(IRSES)Program(FP7-PEOPLE-2010-IRSES,269113);China-European Union Technology Cooperation(1110,(2011))

摘　　要：报道了一种在水溶液中的简单绿色法制备纳米银溶胶。硝酸银,海藻酸钠素,葡萄糖分别作为银源,保护剂和还原剂。纳米溶胶的颜色从无色变到黄色,表明生成了纳米银粒子。利用透射电子显微镜(TEM),紫外可见光谱(UV-vis)和X射线衍射(XRD)对样品进行了分析。TEM图像表明,所得到的银纳米颗粒为粒径较小,分散性较好的球状粒子,且分布范围较窄,从3 nm到12 nm。XRD结果表明所得到的纳米金属粒子为单晶纳米银颗粒。通过UV光谱对反应时间、反应温度、银离子浓度及还原剂的浓度对粒径的影响进行了研究。由于该方法具有无污染、简单、廉价等优点,因此可以作为一种较好制备纳米银粒子的方法。该方法还可以扩展到其它贵金属的技术应用,例如药用,工业应用等。A simple and environmentally friendly method was developed for preparing colloidal silver nanoparticles in aqueous solutions using silver nitrate, sodium alginate and glucose as silver precursor, capping agents and reducing agents, respectively. The formation of silver nanoparticles was observed by the change of color from colorless to yellow. The silver nanoparticles were characterized by transmission electron microscopy（TEM）, UV-visible spectroscopy（UV-vis） and X-ray diffraction（XRD）. The TEM images show that the particles are small, well dispersed and spherical in shape with a narrow distribution from 3 nm to 12 nm. The XRD demonstrates that the obtained metallic nanoparticles are single crystalline silver nanoparticles. The effects of the reaction time, the reaction temperature and the concentration of silver ion and reducing agent on the particle size were investigated by the UV-vis spectra. The present process is an excellent candidate for the preparation of silver nanoparticles because it is simple, free-pollutant, inexpensive and easy to perform. The method may be extended to other noble metals, such as Au, Pd and Pt, for medicinal, industrial and technological applications.

关 键 词：纳米银粒子 海藻酸钠 绿色合成 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O614.122[理学—无机化学]