Citation: Jie Li, Mengyun Hu, Tianpeng Liu, Xin Wang, Jun Yu, Changqing Ye, Yukou Du. Amorphous PdSe/crystalline Pt heterostructure enhances polyhydric alcohols electrooxidation[J]. Chinese Chemical Letters, ;2026, 37(2): 110828. doi: 10.1016/j.cclet.2025.110828 shu

Amorphous PdSe/crystalline Pt heterostructure enhances polyhydric alcohols electrooxidation

Jie Li ^a ,
Mengyun Hu ^a ,
Tianpeng Liu ^a ,
Xin Wang ^a ,
Jun Yu ^a ,
Changqing Ye ^{b, *,} ,
Yukou Du ^{a, *,}

a.
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
b.
Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China

yechangqing@mail.usts.edu.cn

duyk@suda.edu.cn

Received Date: 19 September 2024
Revised Date: 25 December 2024
Accepted Date: 6 January 2025
Available Online: 7 January 2025

Figures(6)

The insufficient performance of Pt and Pd benchmark catalysts remains a significant obstacle to the practical application of direct liquid fuel cells. In this study, we report a synthesis of amorphous PdSe/crystalline Pt nanoparticles (AC-PdPtSe NPs) by chemical leaching of PdPtSe NPs. AC-PdPtSe NPs display significantly enhanced activity and stability for the electrooxidation of ethylene glycol and glycerol, far surpassing that of amorphous-dominant PdPtSe NPs, commercial Pd/C, and Pt/C catalysts. Notably, the integration of crystalline and amorphous domains leverages the advantages of high electrical conductivity and a wealth of active sites, which can substantially accelerate reaction kinetics. Furthermore, detailed investigations reveal that the boundary between the Pt crystalline and PdSe amorphous phases induces a 3% surface tensile strain. The formation of amorphous-crystalline heterointerfaces optimizes the d-band states, thereby strengthening the adsorption and activation of ethylene glycol and glycerol. This study highlights the advance in phase engineering toward the development of highly active noble-metal nanostructures.
- Phase engineering,
- Tensile strain,
- Amorphous-crystalline heterointerface,
- Chemical leaching,
- Polyhydric alcohols electrooxidation
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沈阳化工大学材料科学与工程学院沈阳 110142