@article{Si2023, 
author = {Lianxi Si and Hui Li and Yu Zhang and Donghao Zhang and Xiaowei An and Mengmeng Yao and Yuanyuan Shao and Jesse Zhu and Shi Hu},
title = {Shape-dependence in seeded-growth of Pd-Cu solid solution from Pd nanostructure towards methanol oxidation electrocatalyst},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {7},
pages = {9116-9124},
keywords = {methanol oxidation reaction, optimized electronic structure, tunable composition, Pd-Cu alloy nanosheets, weakened CO-adsorption},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5741-8},
doi = {10.1007/s12274-023-5741-8},
abstract = {Ultrathin Pd nanosheets (NSs) have great advantages in catalysis due to their large specific surface area and high percentage of under-coordinated atoms. However, the electrochemical performance still can be improved via composition-controllable growth of their solid solution. Herein, seeded alloying strategy was proposed to synthesize Pd-Cu solid solution from Pd NSs and Pd-Cu nanostructures with tunable molar ratios obtained by changing the amount of Cu precursor. As compared to the pristine Pd NSs, the Pd-Cu solid solution shows significantly enhanced methanol oxidation reaction (MOR) performance over those of Pd NSs and homemade Pd/C as the incorporation of Cu weakens the adsorption of CO intermediate on Pd in the MOR process. The choice of template is pivotal to the growth, as a shape-dependent behavior could be identified in the alloying of Cu with Pd nanosheets enclosed by {111} and {100} facets, Pd nanocubes enclosed by {100} facet, and Pd nano-tetrahedrons enclosed by {111} facet. The Pd-Cu solid solution with tunable composition can only be obtained from Pd NSs and the shape-dependent alloying process is mainly determined by the diffusion barrier and the minimum diffusion depth of the different facets.}
}