? 能源化学(英文)
ISSN 1003-9953
     
能源化学(英文) 2017, Vol. 26 Issue (1) :200-206    DOI: 10.1016/j.jechem.2016.08.003
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Wormholelike mesoporous carbon supportedPtRu catalysts toward methanol electrooxidation
Weifeng Liua,b, Xiaoping Qinb, Xiongfu Zhanga, Zhigang Shaob, Baolian Yib
a State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China;
b Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
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摘要 Wormholelike mesoporous carbons (WMCs) with three different pore diameters (Dp), namely WMC-F7 (Dp=8.5 nm), WMC-F30 (Dp=4.4 nm), and WMC-F0 (Dp=3.1 nm) are prepared via a modified sol-gel process. Then PtRu nanoparticles with the particle size (dPt) of ~3.2 nm supported on WMCs are synthesized with a modified pulse microwave-assisted polyol method. It is found that the pore diameter of WMCs plays an important role in the electrochemical activity of PtRu toward alcohol electrooxidation reaction. PtRu/WMC-F7 with Dp>2dPt exhibits the largest electrochemical surface area (ESA) and the highest activity toward methanol electrooxidation. With the decrease in Dp, PtRu/WMC-F30 and PtRu/WMC-F0 have much lower ESA and electrochemical activity, especially for the isopropanol electrooxidation with a larger molecular size. When Dp is more than twice dPt, the mass transfer of reactants and electrolyte are easier, and thus more PtRu nanoparticles can be utilized and the catalysts activity can be enhanced.
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关键词Wormholelike mesoporous carbon   PtRu catalyst   Pore diameter   Methanol electrooxidation     
收稿日期: 2016-06-12; 发布日期: 2016-08-04
基金资助:

This work was supported by the National Natural Science Foundation of China (no. 91434106).

通讯作者 Xiongfu Zhang, Zhigang Shao     Email: xfzhang@dlut.edu.cn;zhgshao@dicp.ac.cn
引用本文:   
.Wormholelike mesoporous carbon supportedPtRu catalysts toward methanol electrooxidation[J]  能源化学(英文) , 2017,V26(1): 200-206
.Wormholelike mesoporous carbon supportedPtRu catalysts toward methanol electrooxidation[J]  Journal of Energy Chemistry, 2017,V26(1): 200-206
链接本文:  
http://www.jenergchem.org/CN/10.1016/j.jechem.2016.08.003     或     http://www.jenergchem.org/CN/Y2017/V26/I1/200
 
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