Oxidation of the cyanide ion at a platinum electrode studied by polarization modulation infrared reflection absorption spectroscopy |
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| Institution: | 1. Department of Chemistry, University of Illinois at Chicago, Chicago, IL, USA;1. Department of Chemistry, NSF-CREST Center for Innovation, Research and Education in Environmental Nanotechnology (CIRE2N), Molecular Sciences Research Center, University of Puerto Rico, Río Piedras Campus, San Juan 00931, Puerto Rico;2. Department of Biology, University of Puerto Rico, Río Piedras Campus, San Juan 00931, Puerto Rico;3. Department of Chemistry and Physics, School of Natural Sciences and Technology, Universidad del Turabo, Gurabo 00777, Puerto Rico;1. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;2. School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi''an 710119, Shaanxi, China;3. School of Chemical Engineering, The University of Adelaide, Adelaide, Australia;4. AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL), National Institute of Advanced Industrial Science and Technology (AIST), Yoshida, Sakyo-ku, Kyoto 606-8501, Japan |
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| Abstract: | The anodic oxidation of the cyanide ion at a platinum electrode in aqueous solution was observed by polarization modulation infrared reflection absorption spectroscopy(PM IRRAS). The cyanide ion was adsorbed on the electrode surface in the potential region more negative than 0.4 V (versus Ag/AgCl). In the more positive region (> 0.4 V ), the adsorbed cyanide ion was oxidized to form the cyanate ion. Cyanogen was not detected during the oxidation reactions; this suggests direct electrochemical formation of the cyanate ion. |
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