Citation:
YAN Yuerong, GAO Chengzhuang, ZHANG Yanqing, CHU Wengya, LI Shuangshuang, ZHAO Wei, ZHOU Qun, LI Xiaowei. Surface-enhanced Infrared Absorption Spectroscopy of the Para-mercaptobenzoic acid on the Cobalt-island Film[J]. Chinese Journal of Applied Chemistry,
;2015, 32(2): 221-224.
doi:
10.11944/j.issn.1000-0518.2015.02.140177
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Protective agent free cobalt-island film with infrared enhancement effect was prepared on aluminum metal surface by replacement reaction. Its morphology and characteristics were investigated by using SEM, XRD and IR. Cobalt deposited on aluminum surface emerged as an island structure. Cobalt island films were formed by a large number of secondary cobalt particles and a small amount of cobalt particles through a close packing pattern. Cobalt's unique structure enables a significant enhancement effect on infrared absorption spectrum of organic molecules which are adsorbed on the surface of silver particles. The infrared spectroscopy of 1 mmol/L para-mercaptobenzoic acid has been greatly enhanced on the cobalt-island film. Therefore,the surface-enhanced infrared spectroscopy can be used for trace analysis and testing.
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