银/二氧化硅薄膜对硝酸钠红外吸收特性的影响  

Effect of Silver/Silcon Dioxide Film on the Infrared Absorption Properties of Sodium Nitrate

作　　者：贾志君[1] 孔祥飞[1] 郭强[1] 元光[1] 

机构地区：[1]中国海洋大学物理系,山东青岛266100

出　　处：《光谱学与光谱分析》2012年第12期3213-3216,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(41076057;60907007)资助

摘　　要：采用银氨溶液与二氧化硅溶液混合的方法制备银/二氧化硅(Ag/SiO2)薄膜材料,并利用扫描电镜(SEM)、X射线衍射(XRD)以及紫外—可见吸收光谱进行了表征。研究了Ag/SiO2薄膜对硝酸钠水溶液的红外吸收光谱特性的影响。结果表明硝酸根的反对称振动吸收峰随着硝酸钠的浓度提高而变化,这可能与Ag/SiO2薄膜材料的表面等离子体增强效应和有效表面积增大效应有关。Silver/silicon dioxide （Ag/SiO2） film, which was used for surface enhanced infrared absorption spectroscopy, was made by mixing ammonia solution and SiO2 solution. Surface morphology of thin films was depicted by scanning electron micros- copy, X-ray diffraction and ultraviolet-visible absorption spectrum. The present paper studies the spectroscopy of Ag/SiO2 film during the evaporation of water. Research results show that the anti-symmetric vibration absorption peak of nitrate is the func- tion of solution concentration and the distances. Influence of surface enhanced infrared absorption spectroscopy in nitrate absorp- tion peak is via the electromagnetic mechanism and increasing the effective surface area.

关 键 词：红外吸收 银 二氧化硅膜 硝酸盐 

分 类 号：O433.4[机械工程—光学工程]