Cu(2+)-assisted synthesis of hexoctahedral Au-Pd alloy nanocrystals with high-index facets |
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Authors: | Zhang Lei Zhang Jiawei Kuang Qin Xie Shuifen Jiang Zhiyuan Xie Zhaoxiong Zheng Lansun |
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Affiliation: | State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. |
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Abstract: | Controlled syntheses of multicomponent metal nanocrystals (NCs) and high-index surfaces have attracted increasing attention due to the specific physical and chemical properties of such NCs. Taking advantage of copper underpotential deposition as a bridge, hexoctahedral Au-Pd alloy NCs with {hkl} facets exposed were successfully synthesized, while phase separation occurred in the absence of Cu(2+) ions. The as-prepared hexoctahedral Au-Pd alloy NCs exhibited very excellent performance in terms of both formic acid electro-oxidation and methanol tolerance due to synergism between the high-index facets and the alloy. |
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