Self-reconstruction mediates isolated Pt tailored nanoframes for highly efficient catalysis

Yunpeng Zuo; Dewei Rao; Ning Zhang; Tingting Li; Tianyun Jing; Štěpán Kment; Zdenek Sofer; Yang Chai

doi:10.1039/D1TA05411B

Self-reconstruction mediates isolated Pt tailored nanoframes for highly efficient catalysis†

Yunpeng Zuo,

‡^ad Dewei Rao,

‡^b Ning Zhang,

‡^a Tingting Li,

^c Tianyun Jing,^b Štěpán Kment,^d Zdenek Sofer

^e and Yang Chai

*^a

Author affiliations

* Corresponding authors

^a Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P. R. China
E-mail: ychai@polyu.edu.hk

^b School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, P. R. China

^c Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan 461002, P. R. China

^d Czech Advanced Technology and Research Institute, Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, 78371 Olomouc, Czech Republic

^e Nanotechnology Centre, VŠB–Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic

Abstract

Surface reconstruction of nanocatalysts is an inevitable process during heterogeneous catalysis, resulting in dynamic changes of active sites. It remains a grand challenge to identify the evolution of active sites due to the small size and complex surrounding systems. Here we adopt the PtPdCu heterostructure with many Pt crystals on the surface (h-PdCu&Pt) as a model to investigate surface reconstruction during the ethylene glycol electrocatalytic oxidation. The mismatch between the surface free energy and Gibbs free energy drives the structure reconstruction from h-PdCu&Pt to single Pt active site-tailored PdPtCu nanoframes (SAPt-PdCu NFs) during catalysis. Density functional theory calculation results reveal that the adsorption energy of ethylene glycol on h-PdCu&Pt gradually improves with the surface evolution. Moreover, SAPt-PdCu NFs show better hydrogen evolution reaction activity than h-PdCu&Pt. This discovery promotes the recognition of active sites and facilitates the design of stable catalysts with high activity for heterogeneous catalysis.

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DOI: https://doi.org/10.1039/D1TA05411B
Article type: Paper
Submitted: 27 Jun 2021
Accepted: 13 Sep 2021
First published: 13 Sep 2021

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J. Mater. Chem. A, 2021,9, 22501-22508

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Self-reconstruction mediates isolated Pt tailored nanoframes for highly efficient catalysis

Y. Zuo, D. Rao, N. Zhang, T. Li, T. Jing, Š. Kment, Z. Sofer and Y. Chai, J. Mater. Chem. A, 2021, 9, 22501 DOI: 10.1039/D1TA05411B

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Journal of Materials Chemistry A

Self-reconstruction mediates isolated Pt tailored nanoframes for highly efficient catalysis†

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Self-reconstruction mediates isolated Pt tailored nanoframes for highly efficient catalysis

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