半胱氨酸与纳米银表面聚乙烯吡咯烷酮涂层的交互作用  

Interaction of Cysteine with Polyvinyl Pyrrolidone Coating of Silver Nanoparticles

作　　者：姜鸿喆 杨新瑶[1] 杨悦锁[1] 张博文 

机构地区：[1]沈阳大学区域污染环境生态修复教育部重点实验室,辽宁沈阳110044

出　　处：《沈阳大学学报（自然科学版）》2018年第1期6-12,共7页Journal of Shenyang University：Natural Science

基　　金：国家自然科学基金资助项目(41471409);黑龙江省国土厅资助项目(2200220170022)

摘　　要：基于批量实验与统计分析,定量研究了生物聚合物半胱氨酸(Cys)与聚乙烯吡咯烷酮(PVP)的交互作用,以及pH、温度、Cys质量浓度、纳米银质量浓度等对交互作用的影响.实验结果表明,Cys与纳米银表面能形成很强的化学键,从而置换纳米银表面的PVP,使得纳米银的粒径持续变小.在此环境条件下,纳米银粒径减小范围为20~30nm.经统计分析发现,Cys置换均不存在显著效应,但Cys质量浓度与温度对Cys置换的效应相较其他因素的影响更强,且对置换速度具有正效应.Based on batch test and statistical analysis,the interaction of cysterine and PVP was quantified,as well as the influence of solution pH,temperature,cysteine concentration and AgNP concentration on the interaction.Experimental results show that cysteine could form strong chemical bond with AgNP,leading to PVP desorption and continuous decline in the particle size of AgNP.Depending on the environmental conditions,the AgNP particle size may decrease by 20 to 30 nm.Statistical analysis indicates the absence of the significant factor,though the interaction of cysteine concentration and temperature has a greater and positive effect than the other factors.

关 键 词：纳米银 PVP 半胱氨酸 粒径 置换作用 

分 类 号：X523[环境科学与工程—环境工程]