文献类型：期刊文献

中文题名：离子膜金电极上的氧还原和一氧化碳氧化

英文题名：Reduction of Oxygen and Oxidation of Carbon Monoxide at the Gold Electrode Bonded on Ion Exchange Membrane

作者：张关永[1];陆兆锷[1];锺天耕[1];金鑫荣[1]

机构：[1]华东理工大学化学系

年份：1994

卷号：20

期号：3

起止页码：403

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;EI(收录号：1994121437945);Scopus;CSCD:【CSCD2011_2012】；

基金：国家自然科学基金

语种：中文

中文关键词：过氧化氢;氧电极;金;离子交换膜;一氧化碳;一氧化碳检测仪

外文关键词：hydrogen peroxide;oxygen electrode;gold; ion exchange membrane;carbonmonoxide;carbon monoxide detectors

摘要：用化学还原法在Ｎａｆｉｏｎ－１１７型阳离子交换膜上结合薄层金，制成固体聚合物电解质薄膜上的金电极（Ａｕ－ＳＰＥ）。用电位扫描法考察了电极在酸、碱性溶液中电流与电位的关系，测定了氧还原为过氧化氢的电流效率，发现氧还原过程受阴极液中溶解氧的传质过程所控制。用碱液中的Ａｕ－ＳＰＥ电极对空气中的一氧化碳进行电氧化和检测，得知在相对于相同碱液浓度的Ｈｇ／ＨｇＯ参比电极０．３Ｖ的电位下，所产生氧化电流的极限值与一氧化碳含量的百分数相关。电极有被一氧化碳暂时中毒的现象。
The gold electrode bonded on Nafion-117 ion exchange membrane (Au-SPE)was prepared by the reduction of HAuCl_4. The voltammetric relation of the Au-SPE electrodewas measured by the potential sweep method in the acid and in the alkaline solutiom,separately.The current efficiencies of the reduction of O_2 to H_2O_2 were also determined in the acid solutionand in the alkaline solution, separately.It was discovered that the electro-reduction processis controlled by the masstransfer proccss of the dissolved oxygen in the solution of the cathodiccompaitment.The proper potential for tbe electiooxidation and the detection of CO in air is,0.3 V vs. Hg/HgO reference electrode. The limitting oxidation currents were correlated tothe percentage concentrations of CO in air.The tempolary poison of the Au-SPE electrode byCO existed.