聚吡咯掺杂腐植酸的电化学修饰电极的制备
首发时间:2006-12-18
摘要:掺杂聚吡咯的化学修饰电极是当今相当活跃的研究领域。它可以通过对电极表面的分子剪裁,给电极加以预定的功能,以便在其上有选择的进行所期望的反应。腐植酸的分子结构中有羧基和酚羟基等基团,并具有离子交换性、络合性等多种活性,并且原料易得,价格低廉本,开发其在电化学领域中的应用具有竞争力及发展前景。本课题尝试将腐植酸掺杂在聚吡咯膜中,制成聚吡咯/腐植酸修饰膜电极,并考察其氧化还原特性。
关键词: 关键词:修饰电极,聚吡咯,腐植酸,电化学,氧化还原
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The Synthesis of Polypyrrole Modified Films Doped with Humic Acid
Abstract:CV is used to research the electrochemical characteristic of humic acid, including redox behavior in water without electrolyte and different aqueous solutions of different pH, and Stable potential windows of HA is found base on stable electrochemical ranges. It can be concluded that CVs of Humic Acid in different electrolyte change greatly with pH. Oxidation characteristics is evident in acidic solution, in which one or two oxidation peaks can get by CV, and oxidation peaks change to more negative potential. However, electroactivity of Humic Acid in neutral solution is comparably weak, and it shows better reduction activity in alkali solution.
Keywords: modified electrode , Polypyrrole, humic acid, electrochemistry ,redox
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No.1036788324116640****
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