@article{Gao2018, 
author = {Daowei Gao and Shuna Li and Guolong Song and Pengfei Zha and Cuncheng Li and Qin Wei and Yipin Lv and Guozhu Chen},
title = {One-pot synthesis of Pt-Cu bimetallic nanocrystals with different structures and their enhanced electrocatalytic properties},
year = {2018},
journal = {Nano Research},
volume = {11},
number = {5},
pages = {2612-2624},
keywords = {Pt-Cu nanocrystals, different structures, reduction kinetics, electrocatalytic properties},
url = {https://www.sciopen.com/article/10.1007/s12274-017-1888-5},
doi = {10.1007/s12274-017-1888-5},
abstract = {Shape-controlled synthesis of Pt-Cu alloy nanocrystals (NCs) with unique geometries is of great importance in the rational design and deterministic synthesis of highly active electrocatalysts. Herein, Pt-Cu alloy NCs with concave octahedron (COH), porous octahedron (POH), yolk–shell (YSH), and nanoflower (NOF) structures were fabricated by altering the sequential reduction kinetics in a one-pot aqueous phase. The effect of the reaction kinetics on the formation of Pt-Cu bimetallic NCs with different morphologies was analyzed quantitatively. The concentrations of glycine and metal cation are demonstrated to play a key role in the reduction of Pt(Ⅳ) and Cu(Ⅱ) ions; these significantly affected the morphology of Pt-Cu NCs. These Pt-Cu alloy NCs exhibit substantially enhanced catalytic activity and durability for methanol and formic acid oxidation compared to the commercial Pt/C catalyst. Specifically, the COH and NOF Pt-Cu NCs with more step atoms, intragranular dislocations, and protrusions showed superior electrochemical properties than those of POH and YSH Pt-Cu NCs. The structure–property relationship between the Pt-Cu NCs and their electrochemical performances was also investigated in depth.}
}