Chinese Journal of Catalysis ›› 2023, Vol. 45: 6-16.DOI: 10.1016/S1872-2067(22)64186-X

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Chemical functionalized noble metal nanocrystals for electrocatalysis

Qi Xuea,b, Zhe Wanga, Yu Dinga, Fumin Lia,c,*(), Yu Chena,*()   

  1. aKey Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, Shaanxi, China
    bSchool of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi, China
    cSchool of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
  • Received:2022-08-18 Accepted:2022-10-17 Online:2023-02-18 Published:2023-01-10
  • Contact: Fumin Li, Yu Chen
  • About author:Fumin Li received his PhD at Shaanxi Normal University in 2020. Now he is a postdoctor at Huazhong University of Science and Technology. His research interests focus on the advanced noble metal nanomaterials for electrochemical applications
    Yu Chen received his PhD from School of Chemistry and Chemical Engineering in Nanjing University in 2009. He is currently a professor at School of Materials Science and Engineering at Shaanxi Normal University. His research interests include the control synthesis of noble metal nanocrystals, the fabrication and application of metal-organic interface, and the electrocatalysis.
  • Supported by:
    National Natural Science Foundation of China(21875133);Natural Science Foundation of Shaanxi Province(2020JZ-23);China Postdoctoral Science Foundation(2022M711231);China Postdoctoral Science Foundation(2022M710088);Fundamental Research Funds for the Central Universities(GK202202001);111 Project(B14041)

Abstract:

Electrocatalysis is an interface-dominated process, in which the activity of the catalyst highly relates to the adsorption/desorption behaviors of the reactants/intermediates/products on the active sites. From the perspective of catalyst design, the chemical functionalization design on noble metal surfaces will inevitably affect the reaction process, which is considered to be one of the effective strategies to tune the electrocatalytic performance of noble metal nanocrystals. Polyamines (PAM) with high stability and good coordination ability have been widely studied as important functional molecules. In this account, we first introduce the PAM-assisted synthesis mechanism of noble metal nanocrystals, which provides a theoretical basis and guidance for their design and optimization with controllable morphology. Then, the effects of adsorbed PAM on the electronic structure, geometric structure, electrode/electrolyte interface structure and catalytic reaction pathway of noble metal-based catalysts are specifically described. The internal mechanism of noble metal-PAM interfacial effect increasing catalyst activity and selectivity is stated, and the latest research progress of PAM functionalized catalysts applied in important reactions is listed, such as hydrogen evolution reaction, oxygen reduction reaction, formic acid oxidation reaction, and nitrate reduction reaction, and so on. These findings open a new avenue for constructing advanced electrocatalysts based on inorganic/organic polymer-mediated interface engineering in various energy-related catalysis/electrocatalysis fields. Finally, the current challenges and future prospects of PAM molecule functionalized noble metal electrocatalysts are proposed.

Key words: Noble metal nanocrystal, Chemical functionalization, Electrocatalysis, Proton enrichment, Interface screen, Pathway optimization