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.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
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
