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题名: Nanopores array of ordered mesoporous carbons determine Pt's activity towards alcohol electrooxidation
作者: He, Chaoxiong2;  Liang, Yeru1;  Fu, Ruowen1;  Wu, Dingcai1;  Song, Shuqin2;  Cai, Rui3
刊名: JOURNAL OF MATERIALS CHEMISTRY
发表日期: 2011
DOI: 10.1039/c1jm13423j
卷: 21, 期:41, 页:16357-16364
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: A nanopores array in ordered mesoporous materials matters significantly to the reactant molecules arriving at the active catalytic sites in the interior of the nanostructure. However, how this effect works in the case of electrocatalysis needs investigating. We present that the nanopores array of carbon supports plays a significant role in determining Pt's accessibility and electroactivity. The ordered mesoporous carbons with interconnected pore channels (CMK-3) provide Pt nanoparticles with more than one order of magnitude superior Pt utilization efficiency and alcohol electrooxidation activity to those with isolated pore channels by carbon wall (FDU-15). This becomes more prominent in the case of the electrooxidation of isopropanol with a bigger molecular size and lower polarization. These findings indicate the significant role of nanoarchitectures in Pt's accessibility and electroactivity. It is possible to extend this concept to the other fine chemistry typical of surface activity and facile mass transport of molecules.
关键词[WOS]: FUEL-CELL REACTIONS ;  ELECTROCHEMICAL IMPEDANCE ;  ELECTROCATALYTIC ACTIVITY ;  POLYOL SYNTHESIS ;  NANOPARTICLES ;  METHANOL ;  SILICA ;  ELECTROANALYSIS ;  ELECTRODES ;  OXIDATION
语种: 英语
WOS记录号: WOS:000295733300008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142353
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Sun Yat Sen Univ, Sch Chem & Chem Engn, PCFM Lab, Inst Mat Sci, Guangzhou 510275, Guangdong, Peoples R China
2.Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
He, Chaoxiong,Liang, Yeru,Fu, Ruowen,et al. Nanopores array of ordered mesoporous carbons determine Pt's activity towards alcohol electrooxidation[J]. JOURNAL OF MATERIALS CHEMISTRY,2011,21(41):16357-16364.
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