摘要
利用乙二醇还原合成银纳米线。研究了聚乙烯吡咯烷酮(PVP)的平均分子量,Ag NO3与PVP(平均分子量为1300000)物质的量的比,控制剂(Cl-)离子浓度对产物形貌及银纳米线长径比的影响。通过SEM、XRD测试,对不同的条件下制备的纳米银线进行微观形貌和晶体结构进行表征。实验表明,PVP平均分子量对纳米银线制备有着重要的影响且不同的PVP平均分子量需要不同的溶液浓度体系才能制备出高纯高产高长径比的纳米银线。当PVP的平均分子量为1300000,控制剂为Cu Cl2·2H2O和KCl,Ag NO3与PVP物质的量之比为1∶2,反应时间为1 h,纳米银线的直径大约为80 nm,长度大约为100μm,长径比可高达1000多。
Silver nanowires were synthesized through a polyol synthetic method.The details of the experiment such as the average molecular weight of the poly vinylpyrrolidone(PVP),mole ratio of the AgN03 to PVP,the concentration of Cl^were investigated.All microcosmic morphologies and crystalline structures of the silver products prepared in different condition were characterized through scanning electron microscopy and X-ray diffraction.The results show that the average molecular weight of the poly vinylpyrrolidone(PVP)has an important influence on the preparation of silver nanowires and different average molecular weight of PVP should match solution system of different concentration in order to prepare the high-purity,high-yield and high aspect ratio silver nanowires.The silver nanowires of length,diameter and aspect ratio are 100 jjim,80 nm and above 1000 when average molecular weight of PVP is 1300000,control agent are CuCl2?2H20 and KC1,the mole ratio of AgN03 to PVP is 1:2 and reaction time is 1 h.
作者
徐杰
甘国友
NAY CHYI HTWE
严继康
易健宏
XU Jie;GAN Guo-you;NAY CHYI HTWE;YAN Ji-kang;YI Jiang-hong(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Key Laboratory of Advanced Materials of Yunnan Province,Kunming Key Laboratory of Advanced Materials of Precious-Nonferrous Metals,Kunming 650093,China)
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2018年第3期564-569,577,共7页
Journal of Synthetic Crystals
基金
国家自然科学基金(51771084,51362017)
稀贵金属综合利用新技术国家重点实验室开放课题(Skl-Spm-201502)
稀贵金属先进材料协同创新中心协同创新基金(14051708)
关键词
纳米银线
PVP平均分子量
控制剂
长径比
silver nanowire
average molecular weight of the PVP
control agent
aspect ratio
