Fabrication of Pt–Cu/RGO hybrids and their electrochemical performance for the oxidation of methanol and formic acid in acid media
Fabrication of Pt–Cu/RGO hybrids and their electrochemical performance for the oxidation of methanol and formic acid in acid media
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Pt-Cu/RGO杂化材料的制备及其在酸性介质中氧化甲醇和甲酸的电化学性能
DOI：
10.1016/j.carbon.2013.05.056
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发表时间：
2013-11
期刊：
影响因子：
10.9
通讯作者：
Jianping Gao
中科院分区：
文献类型：
--
作者：
Xiying Sun;Wei Wang;Yu Liu;Jianping Gao
在氧化石墨烯（GO）存在下，用nabh4还原h2ptcl6和cuso4，制备了不同Pt/Cu比的Pt - Cu/还原氧化石墨烯（Pt - Cu/RGO）杂化物。采用透射电镜、x射线衍射和x射线光电子能谱对所制备的铂铜纳米颗粒进行了表征。通过紫外-可见吸收光谱、拉曼光谱和x射线光电子能谱对氧化石墨烯的还原进行了验证。与Pt/RGO相比，Pt - cu /RGO杂化物对甲醇和甲酸的氧化具有更好的电催化活性和稳定性。因此，它们应该在直接甲醇和甲酸燃料电池中有潜在的应用。
Pt–Cu/reduced graphene oxide (Pt–Cu/RGO) hybrids with different Pt/Cu ratios were prepared by the reduction of H2PtCl6and CuSO4by NaBH4in the presence of graphene oxide (GO). The Pt–Cu nanoparticles were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The reduction of GO was verified by ultraviolet–visible absorption spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy. Compared to Pt/RGO, the Pt–Cu/RGO hybrids have superior electrocatalytic activity and stability for the oxidation of methanol and formic acid. Thus they should have potential applications in direct methanol and formic acid fuel cells.
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