Journal
CHEMISTRY OF MATERIALS
Volume 19, Issue 7, Pages 1840-1844Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm062336z
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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.
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