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,2017,46(12):3947~3952.[liyesheng,wugao,liuting,wuziping,yinyanhong,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的离子交换-碳化制备及其载铂电化学性能
投稿时间:2015-10-03  修订日期:2016-02-07
中文关键词:  碳化钨/石墨碳  电催化活性  离子交换法  载铂
基金项目:国家自然科学基金(51202095,51264010),江西省科技厅项目(20122BAB216013,20121BBE50027, 20153BCB230,20133BBE50005)
中文摘要:
      本文以离子交换树脂为碳源,偏钨酸铵(AMT)为钨源和亚铁氰化钾(K4Fe(CN)6·3H2O)为催化剂,采用离子交换法制备树脂基前躯体,在氮气气氛下高温还原同步碳化制备碳化钨/石墨碳(WxC/GC)复合物。以WxC/GC为载体,采用微波加热乙二醇还原法负载纳米铂(Pt)颗粒制备了Pt/WxC/GC催化剂。通过XRD、TG和SEM等测试技术分析了WxC/GC的形成过程及其形貌。并在酸性介质中测试Pt/WxC/GC的电催化性能。实验结果表明:制备的WxC/GC复合物颗粒细小,分散均匀,WxC粒径为2-30 nm左右。载质量分数10%Pt的Pt/WxC/GC在酸性介质中具有较好的电催化活性和稳定性,对甲醇的氧化电流密度峰值为39 mA·cm-2。
WxC/GC synthesized By an Ion-exchange Carbonaization method and its Electrochemical Performance
英文关键词:tungsten carbides/graphitic carbon  electro-catalytic activity  ion-exchange method  platinum loading
英文摘要:
      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.
作者单位E-mail
黎业生 江西理工大学 材料科学与工程学院 liyesheng@sohu.com 
吴高 江西理工大学 材料科学与工程学院 1178627804@qq.com 
刘亭 江西理工大学 材料科学与工程学院  
吴子平 江西理工大学 材料科学与工程学院  
尹艳红 江西理工大学 材料科学与工程学院  
陈德明 江西理工大学 材料科学与工程学院  
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