Cu5Pt Dodecahedra with Low-Pt Content: Facile Synthesis and Outstanding Formic Acid Electrooxidation
Wang, Y (Wang, Yao)[ 1 ] ; Jiang, X (Jiang, Xian)[ 1 ] ; Fu, GT (Fu, Gengtao)[ 2 ]*; Li, YH (Li, Yuhan)[ 1 ] ; Tang, YD (Tang, Yidan)[ 1 ] ; Lee, JM (Lee, Jong-Min)[ 2 ]*; Tang, YW (Tang, Yawen)[ 1 ]*（唐亚文）

[ 1 ] Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China
[ 2 ] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore

ACS APPLIED MATERIALS & INTERFACES，201909,11(38),34869-34877

Tailoring composition and structure are significantly important to improve the utilization and optimize the performance of the precious Pt catalyst toward various reactions, which greatly relies on the feasible synthesis approach. Herein, we demonstrate that Cu-rich Cu5Pt alloys with unique excavated dodecahedral frame-like structure (Cu5Pt nanoframes) can be synthesized via simply adjusting the amounts of salt precursors and surfactants under hydrothermal conditions. It is established that the presence of hexamethylenetetramine and cetyltrimethylammonium bromide, as well as the selection of a proper Pt/Cu ratio are key for the acquisition of the target product. The immediate appeal of this material stems from frame-like architecture and ultralow Pt content involved, which can be used to greatly improve the utilization efficiency of Pt atoms. When benchmarked against commercial catalysts, the developed Cu5Pt nanostructures display superior electrocatalytic performance toward formic acid oxidation, owing to unique electronic effect and ensemble effect. This work elucidates a promising methodology for the synthesis of Pt-based nanostructures while highlights the significance of composition and structure in electrocatalysis.

文章链接：
https://pubs.acs.org/doi/10.1021/acsami.9b09153

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