Abstract: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 microscopy, 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 function of solution concentration and the distances. Influence of surface enhanced infrared absorption spectroscopy in nitrate absorption peak is via the electromagnetic mechanism and increasing the effective surface area.
[1] Taboada M E, Hernández P C, Galleguillos H R, et al. Hydrometallurgy, 2012, 113-114: 160. [2] Zhang J Z, Charles J F. Marine Chemistry, 2006, 99: 220. [3] YANG Guo-wei, MAO You-de(杨国伟, 毛友德). Infrared Technology(红外技术), 1993, 15(6): 18. [4] Hang L X, Yin Y, Xu J Q. Thin Solid Films, 2006, 515(1): 357. [5] Prodan E, Radloff C, Halas N J, et al. Science, 2003, 302: 419. [6] Janardan K, Fei L, et al. Chem. Phys. Lett., 2008, 452: 115. [7] Osawa M. Appl. Spec., 1993, 47: 1497. [8] Anderson M S. Appl. Phys. Lett., 2003, 83(14): 2964. [9] Anderson M S. Appl. Phys. Lett., 2005, 87(18): 14102. [10] Stber W, Fink A, Bohn E. Colloid Interface Sci., 1968, 26: 62. [11] Vereda E A, Torres A G, et al. Talanta, 2008, 75: 424. [12] Frost R L, Locos A B, et al. Vibr. Spec., 2001, 26: 33. [13] Sail G R, Suyong R, Jean B, et al. The Journal of Physical Chemistry A, 2010, 114(3): 1255. [14] Duan L O, Angela B S. Non-Crystalline Solids, 1997, 210: 187. [15] Irish D E, Davis A R. Canadian Journal of Chemistry, 1968, 46: 943. [16] WENG Shi-fu(翁诗甫). Fourier Transform Infrared Spectroscopy Analysis(傅里叶变换红外光谱分析). Beijing: Chemical Industry Press(北京: 化学工业出版社), 2010.