中文摘要：

在烷基胺/油酸/水混合体系中制备出表面包裹的亲油性纳米银颗粒,体系中的烷基胺作为络合剂和稳定剂起到使Ag离子水溶液与油酸互溶的作用,在还原过程中均匀释放出Ag离子,使Ag表面被油酸包裹具有亲油性。在相同反应条件下,分别以环己胺、正丁胺、三乙胺作为络合剂,考察了不同结构的胺对纳米Ag的形成过程以及对纳米Ag的表面性质和形貌的影响,并考察了所得纳米Ag颗粒的热稳定性。结果表明,相同反应条件下,正丁胺和三乙胺比环己胺更适于作为络合剂和稳定剂来制备油酸包裹的亲油性纳米Ag,所制备的纳米Ag颗粒在烷烃等中具有较好的热稳定性。

英文摘要：

The stably hydrophobic silver nanoparticles（ Ag NPs） were successfully prepared in the mixed system of water,alkylamine and oleic acid. Alkylamine plays an important role as a reagent to keep Ag＋and oleic acid in one phase,which makes that silver cores can be capped uniformly. Cyclohexylamine,n-butylamine,or triethylamine were used in the same condition,respectively. The effects of different amines in the reaction solvents on the formation,morphology and surface property of as-prepared Ag NPs were investigated. The results showed that n-butylamine and triethylamine were more appreciate than cyclohexylamine for using as solvents to prepare stably hydrophobic Ag NPs.