Polyvinylpyrrolidone as an Efficient Stabilizer for Silver Nanoparticles  

作　　者：Weidong Huang Linxia Zhang Qiuping Yang Zhimin Wang 

机构地区：[1]School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Chinese Journal of Chemistry》2014年第9期909-913,共5页中国化学（英文版）

基　　金：This work is supported by the State High-Tech Research and Development Plan(863)(grant No.2012AA02A104);Cultivation and Construction of Key Subjects of Horticulture in Shanghai(B209);Foundation for Innovation in Science and Technology,Shanghai Jiao Tong University.

摘　　要：Aggregation of nanoparticles is a serious problem in their applications.In this article,stability of biosynthesized silver nanoparticles(AgNPs)was initially studied with different concentrations of sodium chloride(NaCl).Surfactant screening showed that polyvinylpyrrolidone(PVP)was an ideal stabilizer,which not only was effective at a low concentration(0.1%,V/V),but also could protect silver colloids from aggregation for a long period at 1 mol•L^(−1) NaCl,and 6 h even at 3 mol•L^(−1) NaCl.However,some other surfactants,such as sodium dodecyl(SDS),Triton X-100,Tween-20,and Tween-80,could not prevent AgNPs from aggregation even at a high concentration up to 0.5%(V/V).This AgNPs stabilizer is simple and convenient for a variety of applications compared with others.

关 键 词：silver nanoparticles POLYVINYLPYRROLIDONE STABILIZER NACL 

分 类 号：O61[理学—无机化学]