石墨烯负载Pt催化剂的制备及催化氧还原性能

引用本文: 李云霞, 魏子栋, 赵巧玲, 丁炜, 张骞, 陈四国. 石墨烯负载Pt催化剂的制备及催化氧还原性能[J]. 物理化学学报, 2011, 27(04): 858-862. doi: 10.3866/PKU.WHXB20110411 shu

Citation: LI Yun-Xia, WEI Zi-Dong, ZHAO Qiao-Ling, DING Wei, ZHANG Qian, CHEN Si-Guo. Preparation of Pt/Graphene Catalyst and Its Catalytic Performance for Oxygen Reduction[J]. Acta Physico-Chimica Sinica, 2011, 27(04): 858-862. doi: 10.3866/PKU.WHXB20110411 shu

石墨烯负载Pt催化剂的制备及催化氧还原性能

基金项目:
国家自然科学基金(20806096, 20906107, 20936008) (20806096, 20906107, 20936008)

重庆市政教育委员会(kjzh 08103) (kjzh 08103)

重庆大学211工程三期创新人才培养建设计划研究生开放实验室(S-09013) (S-09013)

中央高校基本科研业务(CDJXS10221141, 11132229)资助项目 (CDJXS10221141, 11132229)

摘要:

采用直接化学还原法, 以金属钠为还原剂, 四氯乙烯为碳源, 在石蜡油中不经氧化石墨( )和氧化石墨烯(GrO)而直接制备石墨烯(Gr), 然后将Pt纳米粒子担载在Gr基体上, 得到Pt/Gr催化剂, 并对其催化氧还原(OR)性能进行了研究. 通过X射线衍射(XRD), 透射电镜(TEM)和电化学测试对合成催化剂的结构、形貌和电化学性质进行了表征. 实验结果表明: 所制备的Pt/Gr催化剂具有较好的分散性, 平均粒径为3.1 nm; 氧还原起始电位比商业JM-Pt/C催化电极正移了24 mV; 交换电流密度达到1×10^-3 mA·cm^-2, 是商业JM-Pt/C催化电极的2.5倍.

关键词:

石墨烯
/ 铂
/ 氧还原
/ 燃料电池
/ 电催化

English

Preparation of Pt/Graphene Catalyst and Its Catalytic Performance for Oxygen Reduction

1.
1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China;
2. School of Material Science and Engineering, Chongqing University, Chongqing, 400044, P. R. China
Received Date: 20 September 2010
Available Online: 29 March 2011
Fund Project:
国家自然科学基金(20806096, 20906107, 20936008)

重庆市政教育委员会(kjzh 08103)

重庆大学211工程三期创新人才培养建设计划研究生开放实验室(S-09013)

中央高校基本科研业务(CDJXS10221141, 11132229)资助项目

Abstract:

Graphene (Gr) is synthesized by the direct reduction of tetrachloroethylene with sodium in paraffin oil rather than by the intermediate steps of oxidized graphite ( ) and oxidized graphene (GrO). Gr is used as support for the subsequent deposition of Pt nanoparticles and the catalytic behavior during oxygen reduction (OR) on the as-prepared Pt/Gr is studied. The structure, morphology, composition, and surface properties of the as-prepared Pt/Gr catalysts were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and electrochemical measurements. We found that the Pt nanoparticles with a mean particle size of 3.1 nm were well-dispersed on the Gr. The onset potential of the oxygen reduction on the Pt/Gr electrode shifted to the positive direction by 24 mV compared with the electrode made from commercial Pt/C catalysts (Johnson-Matthey Co. JM-Pt/C). The exchange current density of the OR on the Pt/Gr electrode was found to be 1×10^-3 mA·cm^-2, which is 2.5 times as that of the electrode made from the JM-Pt/C catalysts.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

石墨烯负载Pt催化剂的制备及催化氧还原性能

English

Preparation of Pt/Graphene Catalyst and Its Catalytic Performance for Oxygen Reduction

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CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

石墨烯负载Pt催化剂的制备及催化氧还原性能

English

Preparation of Pt/Graphene Catalyst and Its Catalytic Performance for Oxygen Reduction

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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