铜岛膜上吸附物的表面增强红外吸收光谱研究  

Surface-enhanced Infrared Absorption Spectroscopy of the Para-mercaptobenzoic Acid on the Copper-island Film

作　　者：闫月荣[1,2] 孙跃枝[2] 张艳青[1] 李双双[3] 褚文娅 赵伟[3] 周群[3] 李晓伟[1] 

机构地区：[1]苏州大学物理与光电能源学部,江苏苏州215006 [2]焦作师范高等专科学校理工学院,河南焦作454000 [3]苏州大学材料与化学化工学部,江苏苏州215123

出　　处：《红外技术》2015年第1期54-56,62,共4页Infrared Technology

基　　金：河南省科技厅基础与前沿基金;编号:112300410326;焦作市科技局基础与前沿(208);(211)

摘　　要：通过置换反应在金属铝表面制备了表面没有任何保护剂且具有红外增强作用的铜岛膜,用扫描电子显微镜(SEM)、X射线衍射(XRD)和表面增强红外光谱对其形貌和性质进行表征。结果表明:铝片上沉积出的铜呈岛状结构,铜岛膜由二次铜粒子和一次铜粒子通过密堆积的方式构成;首次发现具有这种特殊结构的铜对吸附于其表面的有机分子的红外吸收光谱有较大的增强作用,使得表面增强红外光谱可以用于痕量分析、检测。Copper-island film, which is without protective agent but has infrared enhancement effect, was prepared on the metal aluminium surface by replacement reaction. And the morphology and characteristics were investigated by SEM, XRD and IR. The results showed that copper deposited on the aluminum emerges structure of island, Copper island films were formed by a large number of secondary Copper particles and small amounts of copper particles through a close packing way. Herein, we introduce a new finding, revealing that copper＇s unique structure enables a significant enhancement effect on infrared absorption spectrum of organic molecules which are adsorbed on the surface of silver particles. So the surface-enhanced infrared spectroscopy can be used for trace analysis and testing.

关 键 词：铜岛膜 对巯基苯甲酸 表面增强红外吸收光谱 

分 类 号：O657.3[理学—分析化学]