| 甲醇在铂修饰的氧化钛电极上电催化氧化行为的研究 |
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| 引用本文： | 杨辉,陆天虹,刘长鹏,刘晶华,孙公权.甲醇在铂修饰的氧化钛电极上电催化氧化行为的研究[J].高等学校化学学报,2000,21(8):1283-1287. |
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| 作者姓名： | 杨辉 陆天虹 刘长鹏 刘晶华 孙公权 |
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| 作者单位： | 1. 南京师范大学化学系, 南京 210097;
2. 中国科学院长春应用化学研究所, 长春 130022 |
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| 基金项目： | 国家自然科学基金! (批准号 :2 96 76 0 41 )，江苏省教育委员会自然科学基金资助 |
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| 摘 要： | 运用电化学方法评价了电化学阴极还原-阳极氧化两步法制得的以钛为基体的铂修饰的钛氧化物(Pt-TiOx/Ti)电极对甲醇电催化氧化的性能,结果表明,制得的修饰电极对甲醇氧化呈现了很高的电催化活性和好的稳定性.通过X光电子能谱(XPS)、扫描隧道显微镜(STM)和现场傅立叶变换红外(FTIR)反射光谱等技术,发现修饰电极对甲醇氧化具有高的电催化性能,可归属于纳米级Pt粒子在TiOx中的高度分散及由于Pt和TiOx的相互作用,使电极表面对甲醇氧化中间产物CO的吸附量大大降低.
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| 关 键 词： | 甲醇 Pt-TiOx/Ti电极 电催化氧化 |
| 文章编号： | 0251-0790(2000)08-1283-05 |
| 收稿时间： | 1999-05-20 |
Studies on Electrocatalytic Performance of Titanium Oxide Electrode Modified with Pt Toward the Oxidation of Methanol |
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| YANG Hui,LU Tian-hong,LIU Chang-peng,LIU Jing-Hua,SUN Gong-quan.Studies on Electrocatalytic Performance of Titanium Oxide Electrode Modified with Pt Toward the Oxidation of Methanol[J].Chemical Research In Chinese Universities,2000,21(8):1283-1287. |
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| Authors: | YANG Hui LU Tian-hong LIU Chang-peng LIU Jing-Hua SUN Gong-quan |
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| Institution: | 1. Department of Chemistry, Nanjing Normal University, Nanjing 210097, China;
2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China |
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| Abstract: | Electrocatalytic performance of the Pt TiO x /Ti electrode prepared with electrochemical reduction oxidation method toward the oxidation of methanol has been studied. The experimental results showed that the Pt TiO x /Ti electrode has a high electrocatalytic activity and good stability for the electrocatalytic oxidation of methanol. By means of electrochemical, XPS, STM and in situ FTIR techniques, it was found that one reason for the electrode to exhibit an excellent performance is attributed to the high dispersion between nanosized Pt and TiO x particles. The low adsorption ability of the intermediate derived from methanol, such as linearly adsorbed CO species on the electrode surface due to the interaction between Pt and TiO x , also results in the excellent performance. |
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| Keywords: | Methanol Pt TiO x /Ti electrode Electrocatalytic oxidation |
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