Uniform PtIr catalysts supported on carbon nanotubes prepared with assistance from phosphomolybdic acid, and their enhanced performance in the oxidation of methanol

	Uniform PtIr catalysts supported on carbon nanotubes prepared with assistance from phosphomolybdic acid, and their enhanced performance in the oxidation of methanol
	Yuan JH ; He B ; Hong LJ ; Lu J ; Miao JG ; Niu L
刊名	journal of materials chemistry
	2012
卷号	22 期号:37 页码:19658-19665
关键词	FUEL-CELLS METAL NANOPARTICLES OXYGEN REDUCTION ELECTROOXIDATION ELECTROCATALYSTS PTRU CO DISPERSION
ISSN号	0959-9428
通讯作者	yuan jh
中文摘要	multiwalled carbon nanotubes (mwcnts) are functionalized with phosphomolybdic acid (pmo) by ultrasonication. with the assistance of pmo, ptir nanoparticles are homogeneously dispersed on the surface of mwcnts. the size of ptir nanoparticles can be controlled from 1.6 to 3.2 nm by tuning the composition of pt catalysts. the composition of ptir nanoparticles can be optimized at 4 : 1 pt/ir ratio, and as-prepared pmo/pt4ir1/mwcnt catalysts possess unique properties including a small size of ptir nanoparticles, a high electroactive surface area and a large current density of methanol oxidation. for comparison, some pt catalysts, pt4ir1/mwcnt and pmo/pt/mwcnt, are also prepared in a controlled experiment. in the absence of pmo, ptir nanoparticles are unevenly dispersed and aggregated on the surface of mwcnts. their average diameter is 3.1 nm, much larger than that of ptir nanoparticles which are prepared in the presence of pmo (1.6 nm). this accounts for the difference in the catalytic activity of methanol and co oxidation between pt4ir1/mwcnt and pmo/pt4ir1/mwcnt. on the other hand, the introduction of ir makes pmo/pt4ir1/mwcnt catalysts superior to pmo/pt/mwcnt catalysts in terms of a better co-tolerance and a higher catalytic efficiency of methanol oxidation.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000308099900039
公开日期	2013-06-30
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/48460]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Yuan JH,He B,Hong LJ,et al. Uniform PtIr catalysts supported on carbon nanotubes prepared with assistance from phosphomolybdic acid, and their enhanced performance in the oxidation of methanol[J]. journal of materials chemistry,2012,22(37):19658-19665.
APA	Yuan JH,He B,Hong LJ,Lu J,Miao JG,&Niu L.(2012).Uniform PtIr catalysts supported on carbon nanotubes prepared with assistance from phosphomolybdic acid, and their enhanced performance in the oxidation of methanol.journal of materials chemistry,22(37),19658-19665.
MLA	Yuan JH,et al."Uniform PtIr catalysts supported on carbon nanotubes prepared with assistance from phosphomolybdic acid, and their enhanced performance in the oxidation of methanol".journal of materials chemistry 22.37(2012):19658-19665.