Ag/AgX(X=Cl,Br)核壳复合粒子的制备及表征  

Preparation and characterization of Ag/AgX core-shell composite particles

作　　者：张宇[1] 高荣杰[1] 任继栋 刘勇[1] 丁甜[1] 

机构地区：[1]中国海洋大学材料科学与工程研究院,青岛264100

出　　处：《化工新型材料》2017年第5期191-193,共3页New Chemical Materials

基　　金："十二五"国家科技重大专项:水下生产设施腐蚀与防护性能测试技术研究(2011ZX05027-004-06)

摘　　要：通过使用3-巯基丙基三甲氧基硅烷对制备的球形卤化银进行表面处理,使其表面负载巯基,从而通过自组装液相还原技术,得到Ag/AgX核壳复合粒子。并用红外光谱分析、X射线衍射、能谱分析和扫描电镜等方法分析表征该核壳复合粒子的表面基团、组分、形貌与结构。详细研究了巯基处理前后和光照对Ag/AgX核壳复合粒子的影响。结果表明:当使用3-巯基丙基三甲氧基硅烷对制备的球形卤化银进行表面处理,通过液相还原可以生成银颗粒包覆致密的Ag/AgX核壳复合粒子,并且证明了Ag/AgX核壳复合粒子在光照条件下具有较好的稳定性。By using 3-mercaptopropyl trimethoxysilane to proceed the spherical AgX prepared through the surface- treat, so that its surface can load mercapto group, whereby the liquid phase reduction by self-assembly techniques to gener- ate Ag/AgX core-shell particles. And by infrared spectroscopy, X ray diffraction, energy dispersive spectroscopy and scan- ning electron microscopy and other methods to characterize the surface groups, composition, morphology and structure of core-shell composite particles. The influence of CTAB on AgX morphology,as well as the effects of PVP concentration and light on Ag/AgX particles were studied in detail. The conclusions showed that when using CTAB as the surfactant for AgX,its morphology can be prepared more rules,when the mass fraction of PVP was 0.2% ,it can generate dense silver particles coated Ag/AgX particles,and proofed that the particles had better stability under light condition.

关 键 词：核壳复合粒子 自组装液相还原 Ag/AgX 银壳 

分 类 号：TB33[一般工业技术—材料科学与工程]