Enhanced electrocatalytic performance for methanol oxidation with a Magn��li phase molybdenum oxide/Pt-black composite

doi:10.1016/j.molcata.2015.02.001

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	Enhanced electrocatalytic performance for methanol oxidation with a Magn��li phase molybdenum oxide/Pt-black composite
	Yang, Fan ; Li, Fan ; Wang, Yan ; Chen, Xin ; Xia, Dingguo ; Liu, Jingbo
刊名	journal of molecular catalysis a chemical
	2015
DOI	10.1016/j.molcata.2015.02.001
英文摘要	A composite electrocatalyst composed by prepared Magn??li phase Mo4O11 and Pt-black (Pt/Mo4O11) was found with highly effective for the methanol oxidation reaction (MOR). Cyclic voltammetry (CV) result showed that the mass activity for the forward peak (If) of Pt/Mo4O11 was determined to be 722.20 mA mg-1Pt, e.g., about twice of the mass activity of the stand-alone Pt-black. This suggested that the electrocatalytical reactivity is improved when the crystallised Mo4O11 assists for methanol oxidation. It is also found that the peak current ratio of the forward versus the reverse (If/Ib) is 1.21 for Pt/Mo4O11 and 0.81 for Pt/C, respectively. X-ray photoelectron spectroscopy (XPS) results indicated that different valence states of molybdenum coexist in Mo4O11; this promotes both hydrogen spillover and oxygen buffering effects. The synergistic effects of Pt and Mo4O11 on the electrochemical properties represent a critical advantage of the Pt/Mo4O11 catalyst for anti-poisoning towards the intermediates in the MOR. ? 2015 Elsevier B.V. All rights reserved.; SCI(E); EI; 0; ARTICLE; vanadiumli@bjut.edu.cn; dgxia@pku.edu.cn; jingbo.liu@chem.tamu.edu; 7-13; 400
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/410217]
专题	工学院
推荐引用方式 GB/T 7714	Yang, Fan,Li, Fan,Wang, Yan,et al. Enhanced electrocatalytic performance for methanol oxidation with a Magn��li phase molybdenum oxide/Pt-black composite[J]. journal of molecular catalysis a chemical,2015.
APA	Yang, Fan,Li, Fan,Wang, Yan,Chen, Xin,Xia, Dingguo,&Liu, Jingbo.(2015).Enhanced electrocatalytic performance for methanol oxidation with a Magn��li phase molybdenum oxide/Pt-black composite.journal of molecular catalysis a chemical.
MLA	Yang, Fan,et al."Enhanced electrocatalytic performance for methanol oxidation with a Magn��li phase molybdenum oxide/Pt-black composite".journal of molecular catalysis a chemical (2015).