English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 52084/87215 (60%)
造訪人次 : 8914956      線上人數 : 558
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/53662

    題名: Micropipet Delivery−Substrate Collection Mode of Scanning Electrochemical Microscopy for the Imaging of Electrochemical Reactions and the Screening of Methanol Oxidation Electrocatalysts
    作者: Lin, Cheng-lan;Rodrguez-Lpez, Joaqun;Bard, Allen J.
    貢獻者: 淡江大學化學工程與材料工程學系
    日期: 2009-10
    上傳時間: 2011-05-20 09:54:24 (UTC+8)
    出版者: American Chemical Society
    摘要: The micropipet delivery−substrate collection (MD−SC) mode of scanning electrochemical microscopy (SECM) is demonstrated. This new mode is intended for the study and imaging of electrochemical as well as electrocatalytic reactions of neutral species that cannot be generated electrochemically. The spontaneous transfer of the analyte from an organic solvent across an interface between two immiscible electrolyte solutions (ITIES) and its diffusion into the aqueous solution served as the mechanism to deliver it to the substrate, where the corresponding electrochemical or electrocatalytic reaction is carried out. High-resolution SECM images of ferrocenemethanol (FcMeOH) oxidation, benzoquinone (BQ) reduction, and the formic acid oxidation reaction (FAOR) at a Pt microelectrode substrate were successfully acquired. Furthermore, this new mode was used for the screening of electrocatalyst arrays for the methanol oxidation reaction (MOR), with the optimization of an efficient candidate, Pt80Ce20. Digital simulations produced quantitative information about the expected current response at the substrate in the proposed MD−SC mode of SECM.
    關聯: Analytical Chemistry 81(21), pp.8868-8877
    DOI: 10.1021/ac901434a
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文


    檔案 大小格式瀏覽次數



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋