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| 石墨烯负载Pt-Co纳米粒子及其在氧化还原反应中的应用 | |
| 引用本文： | 马延文,刘忠儒,王博琳,朱磊,杨建平,李兴鳌.石墨烯负载Pt-Co纳米粒子及其在氧化还原反应中的应用[J].新型炭材料,2012,27(4):250-257. |
| 作者姓名： | 马延文 刘忠儒 王博琳 朱磊 杨建平 李兴鳌 |
| 作者单位： | 1. 南京邮电大学信息材料与纳米技术研究院,江苏南京210046;南京大学化学化工学院,江苏南京210093 2. 南京邮电大学光电工程学院,江苏南京,210046 3. 南京大学化学化工学院,江苏南京,210093 4. 南京邮电大学信息材料与纳米技术研究院,江苏南京,210046 |
| 基金项目： | National Natural Science Foundation of China(20833002,20903057,51172110);Research Fund for the Doctoral Program of Higher Education of China(20093223120002);Natural Science Foundation of Jiangsu Province(BK2010525,BK2011750);Foundation of Jiangsu Educational Committee(09KJB150007,08KJB150011);Scientific Research Foundation of Nanjing University of Posts and Telecommunications(NY208046,NY208025,NY208026)~~ |
| 摘 要： | 采用微波-乙二醇方法还原氧化石墨烯和Pt(v)、Co(Ⅱ)粒子混合物,再经300℃H2还原,制备了石墨烯负载Pt-Co合金催化剂(Pt-Co/G).利用透射电镜、X-射线能谱、X-射线衍射和光电子能谱对所制催化剂进行表征.Pt-Co合金的粒径为3nm～8 nm,均匀地分散在石墨烯片上.与单金属的Pt/G和商品化的Pt/C催化剂相比,所制合金化的Pt-Co/G催化剂对氧还原反应展现出高的催化活性和可比拟的稳定性,显示了其在燃料电池中的应用潜力. |
| 关 键 词： | 石墨烯 Pt-Co合金纳米粒子 氧化还原反应 燃料电池 电催化剂 |
Preparation of graphene-supported Pt-Co nanoparticles and their use in oxygen reduction reactions |
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| MA Yan-wen , LIU Zhong-ru , WANG Bo-lin , ZHU Lei , YANG Jian-ping , LI Xing-ao.Preparation of graphene-supported Pt-Co nanoparticles and their use in oxygen reduction reactions[J].New Carbon Materials,2012,27(4):250-257. | |
| Authors: | MA Yan-wen LIU Zhong-ru WANG Bo-lin ZHU Lei YANG Jian-ping LI Xing-ao |
| Affiliation: | 1(1.Institute of Advanced Materials,Nanjing University of Posts and Telecommunications,Nanjing 210046,China;2.School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China;3.School of Optoelectronics Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210046,China) |
| Abstract: | Electrocatalysts of graphene-supported Pt-Co alloy nanoparticles(Pt-Co/G) were prepared by a simultaneous reduction of mixtures of graphene oxide and Pt(IV),Co(II) ions with ethylene glycol assisted by a microwave and further H2 treatment at 300 ℃.As-prepared Pt-Co/G catalysts were characterized by transmission electron microscopy,energy-dispersive X-ray spectrometry,X-ray diffraction,and X-ray photoelectron spectroscopy.The Pt-Co binary alloy nanoparticles with a size of 3-8 nm were homogeneously dispersed on the graphene.Compared with the monometallic Pt/G and commercial Pt/C catalysts,the Pt-Co/G catalysts have a high stability and increased electrocatalytic activity that is conducive for the oxygen reduction reaction,suggesting their potential application in fuel cells. |
| Keywords: | Graphene Pt-Co alloy nanoparticles Oxygen reduction reaction Fuel cell Electrocatalyst |
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