一种新型的钛基纳米多孔网状铂电极对甲醇氧化反应的电催化活性  

Electrocatalytic Activity of a Novel Nanoporous Platinum Electrode Towards Methanol Oxidation

作　　者：易清风[1] CHEN Ai—Cheng 章晶晶[1] 黄武[1] 

机构地区：[1]湖南科技大学化学化工学院,湘潭411201 [2]Department of Chemistry, Lakehead University, Thunder Bay, Ontario, P7B 5E1, Canada

出　　处：《高等学校化学学报》2007年第9期1768-1770,共3页Chemical Journal of Chinese Universities

基　　金：湖南省科技计划项目(批准号:05FJ3052)资助.

摘　　要：A novel titanium-supported nanoporous platinum(nanoPt/Ti)with a network structure was fabricated by using the hydrothermal process.Electrochemical oxidation of methanol on nanoPt/Ti was investigated in alkaline solutions for the first time.It was shown from the voltammograms that the peak current density of methanol oxidation on the nanoPt/Ti electrode increases significantly compared to the polycrystalline Pt.As shown in anodic polarization curves at 1 mV/s,the peak current density on the nanoPt/Ti is over 45 times higher than that on the polycrystalline Pt.Moreover,chronoamperometric measurements at different potentials locating round the peak potential of methanol oxidation exhibit highly stable current densities under the applied experimental conditions.A novel titanium-supported nanoporous platinum （nanoPt/Ti） with a network structure was fabricated by using the hydrothermal process. Electrochemical oxidation of methanol on nanoPt/Ti was investigated in alkaline solutions for the first time. It was shown from the voltammograms that the peak current density of methanol oxidation on the nanoPt/Ti electrode increases significantly compared to the polycrystalline Pt. As shown in anodic polarization curves at 1 mV/s, the peak current density on the nanoPt/Ti is over 45 times higher than that on the polycrystalline Pt. Moreover, chronoamperometric measurements at different potentials locating round the peak potential of methanol oxidation exhibit highly stable current densities under the applied experimental conditions.

关 键 词：纳米多孔铂电极 甲醇氧化 电催化 水热法 

分 类 号：O646.5[理学—物理化学]