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WxC/GC的離子交換-碳化制備及其載鉑電化學(xué)性能
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江西理工大學(xué) 材料科學(xué)與工程學(xué)院,江西理工大學(xué) 材料科學(xué)與工程學(xué)院,江西理工大學(xué) 材料科學(xué)與工程學(xué)院,江西理工大學(xué) 材料科學(xué)與工程學(xué)院,江西理工大學(xué) 材料科學(xué)與工程學(xué)院,江西理工大學(xué) 材料科學(xué)與工程學(xué)院

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TB383

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(51202095,51264010),江西省科技廳項(xiàng)目(20122BAB216013,20121BBE50027, 20153BCB230,20133BBE50005)


WxC/GC synthesized By an Ion-exchange Carbonaization method and its Electrochemical Performance
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School of Materials Science and Engineering, Jiangxi University of Science and Technology,School of Materials Science and Engineering, Jiangxi University of Science and Technology,,,,

Fund Project:

National Natural Science Foundation of China (51202095 and 51264010), the Department of Science & Technology of Jiangxi Province (20122BAB216013, 20121BBE50027, 20153BCB230, 20133BBE50005).

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    摘要:

    本文以離子交換樹脂為碳源,偏鎢酸銨(AMT)為鎢源和亞鐵氰化鉀(K4Fe(CN)6·3H2O)為催化劑,采用離子交換法制備樹脂基前軀體,在氮?dú)鈿夥障赂邷剡€原同步碳化制備碳化鎢/石墨碳(WxC/GC)復(fù)合物。以WxC/GC為載體,采用微波加熱乙二醇還原法負(fù)載納米鉑(Pt)顆粒制備了Pt/WxC/GC催化劑。通過XRD、TG和SEM等測(cè)試技術(shù)分析了WxC/GC的形成過程及其形貌。并在酸性介質(zhì)中測(cè)試Pt/WxC/GC的電催化性能。實(shí)驗(yàn)結(jié)果表明:制備的WxC/GC復(fù)合物顆粒細(xì)小,分散均勻,WxC粒徑為2-30 nm左右。載質(zhì)量分?jǐn)?shù)10%Pt的Pt/WxC/GC在酸性介質(zhì)中具有較好的電催化活性和穩(wěn)定性,對(duì)甲醇的氧化電流密度峰值為39 mA·cm-2。

    Abstract:

    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.

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黎業(yè)生,吳高,劉亭,吳子平,尹艷紅,陳德明. WxC/GC的離子交換-碳化制備及其載鉑電化學(xué)性能[J].稀有金屬材料與工程,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.]
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  • 收稿日期:2015-10-03
  • 最后修改日期:2016-02-07
  • 錄用日期:2016-03-29
  • 在線發(fā)布日期: 2018-01-04
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