QQ客服 官方微博 反馈留言

	The effect of CeO2 on Pt/CeO2/CNT catalyst for CO electrooxidation
	Yuan, H. ; Guo, D. ; Li, X. ; Yuan, L. ; Zhu, W. ; Chen, L. ; Qiu, X.
	2010-10-12 ; 2010-10-12
关键词	CO Oxidation Cyclic Voltammetry Electrocatalyst Fuel Cell Electrode Pt Based Electrocatalysts FUEL-CELLS ELECTROCHEMICAL CHARACTERIZATION ANODE ELECTROCATALYST MONOLAYER OXIDATION METHANOL OXIDATION NANOPARTICLES ETHANOL PLATINUM SIZE ELECTRODES Electrochemistry Energy & Fuels
中文摘要	Pt/CeO2/CNT catalysts were prepared by adsorbing Pt nanoparticles on the supports of CNTs coated with CeO2. The electrocatalytic performances in respect to the electrooxidation of chemisorbed CO were tested using potential step and stripping voltammetry methods under variable sweep rate and temperature conditions. At 10 mV s(-1) the CO stripping voltammogram exhibited the peak splitting phenomenon. The oxidation charge and the peak potential of the two voltammetric peaks changed regularly with the number of Pt and CeO2 neighbours, the sweep rate, and the temperature. We considered that the low potential peak originated from the reaction of COads with hydroxyl groups on CeO2 adjacent to Pt sites, while the high potential peak came from the reaction of COads with hydroxyl groups produced on pure Pt. Furthermore, the experimental results of the peak potential against the logarithm of the sweep rate and the logarithm of the current maximum time against the step potential were plotted and intersecting lines with different slopes in high and low potential regions in the plot were observed. The lines intersected at lower potentials on the Pt/CeO2/CNT electrode than on the Pt/CNT electrode, which was attributed to the contribution of hydroxyl groups on CeO2.
语种	英语 ; 英语
出版者	WILEY-V C H VERLAG GMBH ; WEINHEIM ; PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81139]
专题	清华大学
推荐引用方式 GB/T 7714	Yuan, H.,Guo, D.,Li, X.,et al. The effect of CeO2 on Pt/CeO2/CNT catalyst for CO electrooxidation[J],2010, 2010.
APA	Yuan, H..,Guo, D..,Li, X..,Yuan, L..,Zhu, W..,...&Qiu, X..(2010).The effect of CeO2 on Pt/CeO2/CNT catalyst for CO electrooxidation..
MLA	Yuan, H.,et al."The effect of CeO2 on Pt/CeO2/CNT catalyst for CO electrooxidation".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。