Preparation and methanol electro-catalysis property of concave hexahedron CuPt nanoparticle
ZHANG Yufang1, WANG Qi1, WANG Mingpu1,2, JIA Yanlin4, LI Zhou1,3
1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2. Key Laboratory of Nonferrous Metal Materials Science and Engineering of Ministry of Education, Central South University, Changsha 410083, China; 3. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 4. School of Materials Science and Engineering, Beijing University of Technology, Beijing 10000, China
Abstract：Compared to regular octahedron and tetrahedron Pt-alloy nanoparticles, concave hexahedron CuPt alloy nanoparticles have larger surface area. Moreover, the incorporation of Cu atoms allows it exhibits higher stability under harsh environment. In this paper, unique concave hexahedron CuPt alloy nanoparticles were prepared through a facial hydrothermal method. The structures were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), scanning transmission electron microscopy-high angle annular dark field (STEM-HAADF), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results show that the sample is concave hexahedron uniform particles with size of about 30 nm. The as-prepared CuPt/C catalyst exhibits 12 times catalytic activity than commercial Pt/C towards methanol oxidation and presents excellent poison resistance which can prove it to be a potential anode catalyst for fuel cell.
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2018, Vol. 23 
