宁哲,李卓,宋华,刘坤,韩露,王一雍,李继东,万兴元,路金林.微波合成WCx/MWCNTs及其电催化性能研究[J].表面技术,2017,46(5):146-151.
NING Zhe,LI Zhuo,SONG Hua,LIU Kun,HAN Lu,WANG Yi-yong,LI Ji-dong,WAN Xing-yuan,LU Jin-lin.Preparation of WCx/MWCNTs by Microwave and Its Electrocatalytic Property[J].Surface Technology,2017,46(5):146-151
微波合成WCx/MWCNTs及其电催化性能研究
Preparation of WCx/MWCNTs by Microwave and Its Electrocatalytic Property
投稿时间:2016-12-20  修订日期:2017-05-20
DOI:10.16490/j.cnki.issn.1001-3660.2017.05.024
中文关键词:  碳化钨  多壁碳纳米管  自组装  微波  电催化  燃料电池
英文关键词:tungsten carbide  multiwalled carbon nanotube  self-assembly  microwave  electrocatalysis  fuel cells
基金项目:国家自然科学基金(51504133,51374126);辽宁省教育厅项目(L2015259,2016TSPY02);辽宁科技大学研究生教育创新计划项目(2014YJSCX05,LKDYC201604);辽宁科技大学优秀人才培养项目(2015RC05,601009751)
作者单位
宁哲 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
李卓 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
宋华 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
刘坤 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
韩露 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
王一雍 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
李继东 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
万兴元 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
路金林 辽宁科技大学 材料与冶金学院,辽宁 鞍山 114051 
AuthorInstitution
NING Zhe School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
LI Zhuo School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
SONG Hua School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
LIU Kun School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
HAN Lu School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
WANG Yi-yong School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
LI Ji-dong School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
WAN Xing-yuan School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
LU Jin-lin School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China 
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中文摘要:
      目的 制备多壁碳纳米管负载碳化钨的纳米复合材料(WCx/MWCNTs),探索微波加热温度对WCx/MWCNTs合成的影响规律。方法 利用分子自组装技术与微波加热技术相结合,以钨酸钠为W源,制备了WCx/MWCNTs纳米复合材料。采用X射线衍射(XRD)和透射电子显微镜技术(TEM)对不同条件下制得样品的物相组成、结构及微观形貌进行了表征;采用循环伏安法在酸性环境下测试了WCx/MWCNTs对氢和CH3OH的电催化性能。结果 当微波加热温度为1000 ℃时,制备的WCx/MWCNTs纳米复合材料由WC、WC2和C组成,碳纳米管的多壁结构保留较好,碳化钨颗粒均匀地分布在碳纳米管外表面,粒径为20~50 nm。循环伏安测试结果表明,制备的WCx/MWCNTs在酸性环境下对氢具有一定的催化作用,但对甲醇没有明显的电催化作用。结论 通过控制合理的微波加热温度,可制备出碳化钨粒径小、分布均匀、碳纳米管多壁结构完好的WCx/MWCNTs纳米复合材料。制备的WCx/MWCNTs在酸性环境下对氢具有一定的催化作用,可作为催化剂载体来负载其他金属制备复合催化剂。
英文摘要:
      The work aims to explore law of influence of microwave heating temperature on synthesis of WCx/MWCNTs by preparing tungsten carbide (WCx) nanoparticles supported on multiwalled carbon nanotubes (MWCNTs). The WCx/MWCNTs nanocomposites were prepared with sodium tungstate as W source by combining molecular self-assembly technique and micro-wave heating technology. Phase composition, structure and morphology of the samples prepared under different conditions were characterized by X-ray diffractometer (XRD) and transmission electron microscopy (TEM); electrochemical properties of WCx/MWCNTs to hydrogen and methyl alcohol were tested in acidic environment by cyclic voltammetry method. WCx/MWCNTs nanocomposites prepared at the microwave heating temperature of 1000 ℃ were composed of WC, WC2 and C phases. The multiwalled structures of carbon nanotubes were well preserved and the WC particles were evenly distributed on external surface of carbon nano tubes. Particle size of the carbon nanotubes was 20~50 nm. The cyclic voltammetry test results indicated that the prepared WCx/MWCNTs had a certain catalytic effect on hydrogen under acidic conditions, but it had no obvious electrocatalytic effect on methanol. WCx/MWCNTs nanocomposites with small particle size, uniform distribution and complete multiwalled structures of carbon nanotubes can be prepared by controlling the microwave heating temperature. The prepared WCx/MWCNTs nanocomposites have certain catalytic action on hydrogen under acidic conditions and can load other metals to prepare composite catalyst.
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