石墨烯负载Pt-Co纳米粒子及其在氧化还原反应中的应用

马延文1; 2|　刘忠儒3|　王博琳3|　朱　磊2|　杨建平1|　李兴鳌1

doi:10.1016/S1872-5805(12)60016-X

石墨烯负载Pt-Co纳米粒子及其在氧化还原反应中的应用

doi: 10.1016/S1872-5805(12)60016-X

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;

基金项目: 国家自然科学基金（20833002, 20903057，51172110），教育部高等学校博士学科点专项科研基金（20093223120002），江苏省自然科学基金（BK2010525, BK2011750），江苏省高校自然科学基金（09KJB150007），南京邮电大学人才引进项目（NY208046，NY208025，NY208026）.

详细信息

中图分类号: TB 333
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出版历程
- 收稿日期: 2011-11-24
- 录用日期: 2012-08-28
- 修回日期: 2012-01-15
- 刊出日期: 2012-08-20

Preparation of graphene-supported Pt-Co nanoparticles and their use in oxygen reduction reactions

MA Yan-wen1,
2

Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210046, China|
School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China|

Funds: 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), and Scientific Research Foundation of Nanjing University of Posts and Telecommunications (NY208046, NY208025, NY208026).

摘要

摘要: 采用微波－乙二醇方法还原氧化石墨烯和Pt(IV)、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3 nm~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
- 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
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.
- Graphene /
- Pt-Co alloy nanoparticles /
- Oxygen reduction reaction /
- Fuel cell /
- Electrocatalyst