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中空树枝状三氧化钨载铂催化剂对甲醇的电催化氧化性能研究

周阳 ,  胡仙超 ,  刘喜慧 ,  屈慧男 ,  温和瑞 ,  余长林

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引用本文: 周阳, 胡仙超, 刘喜慧, 屈慧男, 温和瑞, 余长林. 中空树枝状三氧化钨载铂催化剂对甲醇的电催化氧化性能研究[J]. 燃料化学学报, 2015, 43(2): 251-256. shu
Citation:  ZHOU Yang, HU Xian-chao, LIU Xi-hui, QU Hui-nan, WEN He-rui, YU Chang-lin. Performance of platinum nanoparticles supported on hollow mesoporous tungsten trioxide microsphere as an electrocatalyst for methanol oxidation[J]. Journal of Fuel Chemistry and Technology, 2015, 43(2): 251-256. shu

中空树枝状三氧化钨载铂催化剂对甲醇的电催化氧化性能研究

    通讯作者: 胡仙超(1981-), 助理研究员, Tel/Fax: 0571-88871095, E-mail: huxc@zjut.edu.cn。
  • 基金项目:

    国家自然科学基金(51404110, 21263005) (51404110, 21263005)

    赣鄱英才555工程, 江西省博士后择优资助项目基金(2014zy15) (2014zy15)

    江西理工大学科研基金(NSFJ2014-G08)。 (NSFJ2014-G08)

摘要: 采用水热法和牺牲模板法相结合制备具有中空树枝结构的三氧化钨载体(d-WO3),在其表面进一步负载活性成分Pt,得到纳米Pt/d-WO3复合催化剂。采用X射线粉末衍射(XRD)、透射电镜(TEM)和比表面积和孔结构分析(BET)等对催化剂的形貌和结构进行了表征。结果表明,三氧化钨具有长6 μm和宽2 μm的中空树枝状结构,孔径分布主要集中在20~120 nm,比表面积为24 m2/g,平均粒径为7.2 nm的Pt纳米粒子均匀分布在其表面。采用循环伏安和计时电流法研究了Pt/d-WO3催化剂在酸性溶液中对甲醇的电催化氧化性能。结果表明,Pt/d-WO3催化剂比Pt/C和Pt/WO3催化剂对甲醇有更高的电催化氧化活性和稳定性。d-WO3所具有的中空介孔结构和双功能作用机理有利于甲醇在铂表面的直接脱氢氧化过程。

English

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  • 收稿日期:  2014-08-04
  • 网络出版日期:  2014-10-22
通讯作者: 陈斌, bchen63@163.com
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