Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (2): 221-224.DOI: 10.11944/j.issn.1000-0518.2015.02.140177

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Surface-enhanced Infrared Absorption Spectroscopy of the Para-mercaptobenzoic acid on the Cobalt-island Film

YAN Yueronga, b, GAO Chengzhuangb, ZHANG Yanqinga, CHU Wengyac, LI Shuangshuangc, ZHAO Weic, ZHOU Qunc, LI Xiaoweia, *   

  1. aCollege of Physics,Optoelectronics and Energy,Soochow University,Suzhou,Jiangsu 215006,China
    bDepartment of Science and Technology,Jiaozuo Teachers College,Jiaozuo,He'nan 454000,China
    cCollege of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou,Jiangsu 215123,China
  • Received:2014-05-12 Revised:2014-09-28 Published:2015-02-10 Online:2015-02-10
  • Contact: LI Xiaowei; Tel:0512-67586075; Fax:0512-67586056;; Research interests:spectroscopic electrochemistry, lithium ion battery materials
  • Supported by:

    ; supported by the Foundation and Frontier Project of the Science and Technology Hall of He'nan Province(No.112300410326), the Foundation and Frontier Project of the Science and Technology Bureau of Jiaozuo(No.208,211)


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.


Key words: cobalt-island films, para-mercaptobenzoic acid, surface-enhanced infrared absorption spectroscopy

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