Facile Synthesis of Co−Pt Hollow Sphere Electrocatalyst

• Published in: Chemistry of materials Vol. 19; no. 7; pp. 1840 - 1844
• Main Authors: Chen, Ge, Xia, Dingguo, Nie, Zuoren, Wang, Zhenyao, Wang, Lei, Zhang, Lei, Zhang, Jiujun
• Format: Journal Article
• Language: English
• Published: American Chemical Society 03.04.2007
• ISSN: 0897-4756; 1520-5002
• DOI: 10.1021/cm062336z

In this paper, successful one-step chemical synthesis of Co−Pt hollow spheres with adjustable composition was developed in an effort to explore new synthesis methods, simplify the synthesis procedure, and improve the synthetic efficiency. In this synthesis, a direct thermolytic reduction of platinum acetylacetonate [Pt(CH3COHCOCH3)2] and cobalt(II) acetate [Co(CH3COO)2] in refluxing ethyl glycol was explored. In the reacting mixture, an anionic surfactant sodium dodecyl sulfate (SDS) was used as the capping and structure-directing agent. These Co−Pt hollow spheres demonstrated enhanced electrocatalytic activity toward methanol oxidation in comparison with Pt nanoparticles, which is crucial for anode electrocatalysis in DMFCs.