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石墨烯负载铂催化剂的制备及稳定性 被引量：7

Preparation and stability of patinum-loaded graphene catalyst
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摘要 以天然石墨粉为原料,制备了氧化石墨(GO),再以GO和氯铂酸(H2Pt Cl6)为前驱体,乙二醇作为溶剂和还原剂,通过浸渍还原法成功制备出铂和石墨烯的复合催化剂(Pt/GR).利用X射线衍射仪、场发射扫描电镜和拉曼光谱仪对样品进行了形貌表征,结果表明Pt颗粒均匀分布在石墨烯的表面,相对于单质,负载有Pt的石墨烯表面更加褶皱且石墨烯片层更加分散.对Pt/GR进行电化学测试并与商用Pt黑催化剂进行对比,结果显示Pt/GR催化剂具有更高的电化学活性面积(ESCA)和更好的电催化性能,相对于Pt黑催化剂,Pt/GR具有更好的电化学稳定性. Graphene oxide（GO） was prepared using grapheme powder as raw material. With GO and H2 Pt Cl6as precursor and ethylene glycol as solvent and reducing agent, composite catalyst Pt/Graphene was prepared by impregnation-reduction method. The as-prepared Pt/Graphene catalyst is characterized by X-ray powder diffraction, scanning electronmicroscopy and Raman spectroscopy. The results show that the Pt nanoparticles are dispersed into the graphene nanosheets by forming a face centered cubic crystal structure. The stability of the catalyst is evaluated by cyclic voltammetry and chronoamperometry. Compared with commercial catalyst,Pt/Graphene catalyst shows an improved electrochemical active area（ESCA） and electro catalytic activity. The Pt/Graphene catalyst has more favorable stability than the commercial catalyst.
作者 卢立新 王新东
机构地区 北京科技大学冶金与生态工程学院 北京科技大学高效钢铁冶金国家重点实验室
出处 《有色金属科学与工程》 CAS 2015年第3期40-44,共5页 Nonferrous Metals Science and Engineering
基金 国家自然科学基金(91010002 50874008) 国家基础研究计划973计划(2013CB934002)
关键词 石墨烯 铂催化剂 催化性能 稳定性 graphene platinum catalyst catalytic performance stability
分类号 O643.36 [理学—物理化学] TG146.3 [金属学及工艺—金属材料]
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参考文献21

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二级参考文献25

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共引文献21

同被引文献105

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引证文献7

二级引证文献20

有色金属科学与工程
2015年 第3期

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