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CMK-5 mesoporous carbon synthesized via chemical vapor deposition of ferrocene as catalyst support for methanol oxidation
Lei, Zhibin1; Bai, Shiying1; Xiao, Yi1; Dang, Liqin1; An, Lizhen1; Zhang, Guangning1; Xu, Qian2
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2008-01-24
DOI10.1021/jpO77322a
112期:3页:722-731
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]HIGH-SURFACE-AREA ; GRAPHITIC PORE WALLS ; HYDROGEN STORAGE ; FUEL-CELL ; NANOPOROUS CARBONS ; PTRU NANOPARTICLES ; SILICA TEMPLATES ; NANOTUBES ; PYROLYSIS ; PRECURSOR
英文摘要A novel and effective method was described in this work to prepare two-dimensional hexagonally ordered mesoporous CMK-5 carbon materials. This method is based on the chemical vapor deposition (CVD) of ferrocene in the mesopores of SBA-15 at 500 degrees C, followed by graphitization at different temperatures. Both the silica/carbon composite and the resulting CMK-5 were characterized by N-2 adsorption, powder X-ray diffraction, Raman spectroscopy, transmission electron microscopy, high-resolution transmission electron microscopy (HRTEM), and thermogravimetric analysis. It was found that the ferrocene could be used as a new precursor to prepare CMK-5 nanopipes, with pipe thicknesses varying from 0.8 to 2.6 nm, by increasing the CVD time from 20 to 120 min. The resulting CMK-5 exhibits high Brunauer-Emmett-Teller (BET) surface area (1044-2449 m(2)/g) and large pore volume (1.13-2.20 cm(3)/g). The graphitization degree of the resulting CMK-5 was investigated by pyrolyzing the corresponding silica/carbon composite at different temperatures. Pyrolysis temperatures below 850 degrees C led to gradually improved graphitization degrees of CMK-5 nanopipes. Pyrolysis temperatures above 850 degrees C resulted in the partial collapse of ordered CMK-5 nanopipes accompanied by the appearance of a considerable amount of entangled graphitic ribbons. The structural evolution process of CMK-5 from ordered nanopipes to the final entangled graphitic ribbons was observed by HRTEM. The obtained CMK-5 was applied as a catalyst support of Pt for methanol oxidation. The electrochemical activities of Pt nanoparticles loaded on the CMK-5 carbon materials were investigated by cyclic voltammograms and compared with the commercial Pt/Vulcan XC-72 catalyst. It was found that the specific mass activity of Pt/CMK-5 was much higher than Pt/Vulcan XC-72.
语种英语
WOS记录号WOS:000252484000012
引用统计
被引频次:69[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140979
专题中国科学院大连化学物理研究所
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
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Lei, Zhibin,Bai, Shiying,Xiao, Yi,et al. CMK-5 mesoporous carbon synthesized via chemical vapor deposition of ferrocene as catalyst support for methanol oxidation[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2008,112(3):722-731.
APA Lei, Zhibin.,Bai, Shiying.,Xiao, Yi.,Dang, Liqin.,An, Lizhen.,...&Xu, Qian.(2008).CMK-5 mesoporous carbon synthesized via chemical vapor deposition of ferrocene as catalyst support for methanol oxidation.JOURNAL OF PHYSICAL CHEMISTRY C,112(3),722-731.
MLA Lei, Zhibin,et al."CMK-5 mesoporous carbon synthesized via chemical vapor deposition of ferrocene as catalyst support for methanol oxidation".JOURNAL OF PHYSICAL CHEMISTRY C 112.3(2008):722-731.
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