Shape-dependence in seeded-growth of Pd-Cu solid solution from Pd nanostructure towards methanol oxidation electrocatalyst

Lianxi Si, Hui Li, Yu Zhang, Donghao Zhang, Xiaowei An, Mengmeng Yao, Yuanyuan Shao, Jesse Zhu, Shi Hu

Research output: Journal PublicationArticlepeer-review

2 Citations (Scopus)


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. [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)9116-9124
Number of pages9
JournalNano Research
Issue number7
Publication statusPublished - Jul 2023
Externally publishedYes


  • Pd-Cu alloy nanosheets
  • methanol oxidation reaction
  • optimized electronic structure
  • tunable composition
  • weakened CO-adsorption

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science (all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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