红外技术, 2015, 37 (1): 54, 网络出版: 2015-03-23
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
铜岛膜 对巯基苯甲酸 表面增强红外吸收光谱 coper-island films para mercaptobenzoic acid surface-enhanced infrared absorption spectroscopy
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.
Abstract
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.
闫月荣, 孙跃枝, 张艳青, 李双双, 褚文娅, 赵伟, 周群, 李晓伟. 铜岛膜上吸附物的表面增强红外吸收光谱研究[J]. 红外技术, 2015, 37(1): 54. YAN Yue-rong, SUN Yue-zhi, ZHANG Yan-qing, LI Shuang-shuang, CHU Weng-ya, ZHAO Wei, ZHOU Qun, LI Xiao-wei. Surface-enhanced Infrared Absorption Spectroscopy of the Para-mercaptobenzoic Acid on the Copper-island Film[J]. Infrared Technology, 2015, 37(1): 54.