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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2010,Vol.26>> Issue(02)>> 385-391     doi: 10.3866/PKU.WHXB20100121         中文摘要
CATALYSIS AND SURFACE STRUCTURE
MClx(M=Pd, Fe, Cr) Assisted Synthesis of Ordered Mesoporous Carbon and Their Electrocatalytic Performance after Loading with Pt Nanoparticles
SUN Dun, HE Jian-Ping, ZHOU Jian-Hua, WANG Tao, DI Zhi-Yong, WANG Dao-Jun, DING Xiao-Chun
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
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The Pt-loading properties of ordered mesoporous carbon (OMC) synthesized with assistance of MClx (M=Pd, Fe, Cr; x=2, 3, 3) were investigated. X-ray diffraction (XRD) and transmission electron microscope (TEM) show that the ordered structure is well-preserved after the introduction of PdCl2. Because of the pyrolysis of organic carbon the OMC-PdCl2 is mainly present in the formof metallic Pd and is homogenously embedded into the scaffold of the OMC. A binary catalyst comprised of metallic Pd and microwave-reduced Pt nanoparticles was also generated. Electrochemical hydrogen absorption-desorption tests reveal that Pt/OMC-MClx possesses excellent catalytic performance and has an electrochemical active surface area (SEA) being as 2-4 times as that of Pt/OMC. Pt/OMC-PdCl2 has the highest SEA of 120.2 m2·g-1 followed by Pt/OMC-CrCl3 and then Pt/OMC-FeCl3. After a long-term cyclic voltammetric test, Pt/OMC-MClx still exhibits excellent catalytic stability and relatively higher catalytic activity as evidenced by a 22%-40% decrease in catalytic activity after one hundred cycles. This work will open up a most promising application in catalysis.



Keywords: Metal salt   Assisted catalysis   Hydrogen absorption-desorption   Catalytic stability   Ordered mesoporous carbon  
Received: 2009-07-06 Accepted: 2009-09-04 Publication Date (Web): 2009-11-27
Corresponding Authors: HE Jian-Ping Email: jianph@nuaa.edu.cn


Cite this article: SUN Dun, HE Jian-Ping, ZHOU Jian-Hua, WANG Tao, DI Zhi-Yong, WANG Dao-Jun, DING Xiao-Chun. MClx(M=Pd, Fe, Cr) Assisted Synthesis of Ordered Mesoporous Carbon and Their Electrocatalytic Performance after Loading with Pt Nanoparticles[J]. Acta Phys. -Chim. Sin., 2010,26 (02): 385-391.    doi: 10.3866/PKU.WHXB20100121
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