In situ scanning FTIR microscopy and IR imaging of Pt electrode surface towards CO adsorption |
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Authors: | Shigang Sun Shuangjin Hong Shengpei Chen Guoqiang Lu Hongping Dai Xiaoyin Xiao |
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Affiliation: | (1) State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Institute of Physical Chemistry, Xiamen University, 361005 Xiamen, China |
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Abstract: | In situ scanning FTIR microscopy was built up for the first time in the present work, which consists of an FTIR apparatus, an IR microscope, an X-Y mapping stage, and the specially designed electrochemical IR cell and computer software. It has been demonstrated that this new space-resolvdin situ IR technique can be used to study vibration properties of micro-area, and to perform IR imaging of electrode surface. The chemical image obtained using this technique for CO adsorption on Pt electrode illustrated, at a space-resolution of 10-2 cm, the inhomogeneity and the distribu-tion of reactivity of micro-area of electrode surface. Project supported by the National Natural Science Foundation of China (Grant No. 29525307). |
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Keywords: | in situ scanning FTIR microscopy reflection spectroscopy IR imaging CO adsorption Pt electrode |
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