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黎业生,吴高,刘亭,吴子平,尹艳红,陈德明.WxC/GC的离子交换-碳化制备及其载铂电化学性能[J].稀有金属材料与工程(英文),2017,46(12):3947~3952.[liyesheng,wugao,liuting,wuziping,yinyanhong and chendeming.WxC/GC synthesized By an Ion-exchange Carbonaization method and its Electrochemical Performance[J].Rare Metal Materials and Engineering,2017,46(12):3947~3952.]
WxC/GC synthesized By an Ion-exchange Carbonaization method and its Electrochemical Performance
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Received:October 03, 2015  Revised:February 07, 2016
Key words: tungsten carbides/graphitic carbon  electro-catalytic activity  ion-exchange method  platinum loading
Foundation item:国家自然科学基金(51202095,51264010),江西省科技厅项目(20122BAB216013,20121BBE50027, 20153BCB230,20133BBE50005)
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liyesheng,wugao,liuting,wuziping,yinyanhong and chendeming  
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      A simple approach was proposed to fabricate tungsten carbides/graphitic carbon(WxC/GC) composites by using ion-exchange resin as carbon resource,ammonium metatungstate(AMT) as tungsten source and the potassium ferrocyanide(K4Fe(CN)6·3H2O)as catalyst. The resin-based precursor was prepared via the ion-exchange method and underwent reduction and synchronous carbonization at high temperature under N2 atmosphere to fabricate WxC/GC composites. Furthermore, the WxC/GC supported platinum nanoparticle (Pt/WxC/GC) was prepared by microwave-assisted polyol method. The crystalline phase,structure and morphology of samples were characterized with X—ray diffraction(XRD),transmission electronic microscope(TEM),and energy dispersive X-ray spectroscopy(EDS).The electro-catalytic activity of Pt/WxC/GC in acidic media was investigated using cyclic voltammetry. The results indicated that WxC particles were uniformly distributed in the as-synthesized WxC/GC composites with the size of 2~30nm. Pt/WxC/GC with 10wt% Pt exhibits attractive catalytic activity and stability, the oxidation current density of methanol can reach 39mA·cm-2.