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题名: Highly dispersed platinum supported on nitrogen-containing ordered mesoporous carbon for methanol electrochemical oxidation
作者: Lei, Zhibin1;  An, Lizhen1;  Dang, Liqin1;  Zhao, Mingyi1;  Shi, Jingying2;  Bai, Shiying1;  Cao, Yindi1
关键词: Mesoporous carbon ;  Nitrogen group ;  Dispersion of platinum ;  Methanol oxidation
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2009-03-01
DOI: 10.1016/j.micromeso.2008.09.033
卷: 119, 期:1-3, 页:30-38
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Nitrogen-containing ordered mesoporous carbons (NOMCs) characteristic of CMK-3 were nanocasted from mesoporous silica SBA-15 using aniline as carbon precursor. The influence of synthesis condition on the structural parameters of NOMCs were systematically investigated using N-2 adsorption, powder X-ray diffraction (XRD), transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), elemental analysis and thermogravimetric analysis (TGA). The 2D hexagonally ordered nitrogen-containing mesoporous carbon could be synthesized in a wide temperature range (600-950 degrees C), with Brunauer-Emmett-Teller (BET) surface area varying from 988 to 1166 m(2)/g and pore size tunable from 2.7 to 3.3 nm. The N/C molar ratio in the framework of mesoporous carbon was found to be highly dependent on the synthesis condition and reduced from 9.5% to 4.8% as the synthesis temperature increased from 600 to 950 degrees C. XPS showed that nitrogen atoms were incorporated in graphitic sheets as quaternary nitrogen and pyridine-like nitrogen. The ca. 0.6 eV lower binding energy of Pt nanoparticles in contrast to that of bulk Pt indicated a strong interaction between nitrogen atoms and Pt nanoparticles, which was critical to the uniform dispersion of Pt nanoparticles on the nitrogen-containing mesoporous carbon. The CO stripping peak potentials depended on both the N/C ratio as well as Pt particles size. The activities of methanol oxidation on Pt/NOMCs were investigated by cyclic voltammograms and electrochemical impedance spectroscopy (EIS). The Pt/NOMCs showed generally high CO tolerance and comparable activity to Pt/XC-72 under the identical condition. (C) 2008 Elsevier Inc. All rights reserved.
关键词[WOS]: CHEMICAL-VAPOR-DEPOSITION ;  GRAPHITIC PORE WALLS ;  FUEL-CELL ;  CATALYST SUPPORT ;  ELECTRONIC-STRUCTURE ;  TEMPLATING SYNTHESIS ;  NANOPOROUS CARBONS ;  PTRU NANOPARTICLES ;  SILICA PARTICLES ;  METAL-CLUSTERS
语种: 英语
WOS记录号: WOS:000263158700005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141496
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.Liaoning Normal Univ, Fac Chem & Chem Engn, Inst Chem Functionalized Mat, Dalian 116029, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Lei, Zhibin,An, Lizhen,Dang, Liqin,et al. Highly dispersed platinum supported on nitrogen-containing ordered mesoporous carbon for methanol electrochemical oxidation[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2009,119(1-3):30-38.
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