结晶紫在银溶胶表面SERS增强因子的计算  

Adsorption of Crystal Violet Onto the Surface of Silver Colloids

作　　者：孟卫[1,2] 江晓红[1] 陆路德[1] 汪信[1] 

机构地区：[1]南京理工大学化工学院软化学与功能材料教育部重点实验室,江苏南京孝陵卫街200号210094 [2]中国药科大学理学院

出　　处：《光谱实验室》2013年第1期117-121,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：国家自然科学基金资助项目(50972059)

摘　　要：通过硝酸银和柠檬酸钠的还原反应制备了纳米银溶胶,利用UV-Vis吸收光谱,ζ电势,透射电镜(TEM)对制备的银溶胶进行了表征。以结晶紫分子作为探针,研究了结晶紫在银溶胶粒子表面吸附的特点,并利用结晶紫的吸附等温线计算出表面增强拉曼(SERS)增强因子。实验结果表明在不加聚沉剂的条件下,银溶胶仍然具有较高的SERS活性。In this paper,silver colloids were prepared by reduction from silver nitrate with sodium citrate.The properties of silver colloids were characterized by means of UV-Vis spectroscopy,ζpotential measurements,transmission electron microscopy（TEM） and conductivity.Adsorption of crystal violet onto colloidal silver was researched while using crystal violet as a molecular probe.The enhancement factor of surface-enhanced Raman scattering was calculated by the use of crystal violet adsorption isotherm.Results showed that silver colloids still have high SERS activity without any active substances.

关 键 词：表面增强拉曼 吸附 结晶紫 银溶胶 

分 类 号：O657.32[理学—分析化学] O657.37[理学—化学]