journal article·2025-10Open access

Thiol‐Modulation‐Induced Mesoporous Nanosheets with an Alloy/Intermetallic Heterophase for Efficient Electrochemical Ethylene Glycol‐Assisted Water Splitting

Fukai Feng, Sumei Han, Chaoqun Ma, Xiao Ma, Gang Lin, Huaifang Zhang, Caihong He, Xinran Jiao, Xiangmin Meng, Wenbin Cao, Chongyi Ling, Lijie Zhu, Jing Xia, Qinbai Yun, Qipeng Lu

Advanced Functional Materials· Volume 35· Issue 40

Abstract

Abstract Ligand modification has been widely utilized to tune the coordination environment of active sites in noble metal‐based electrocatalysts to enhance their catalytic activity and selectivity. However, the ligand‐induced structure transition of the catalyst and its effect on performance is not clear. In this study, a thiol modification strategy is developed to prepare sulfur‐capped mesoporous PtPbBi nanosheets (S‐PtPbBi MNSs) with an alloy/intermetallic compound heterophase and inhomogeneous tensile strain (≈3%). The obtained S‐PtPbBi MNSs exhibit excellent electrocatalytic performance for ethylene glycol oxidation reaction (EGOR), achieving a Faradic efficiency of up to 92% in converting EG to glycolic acid. In EG‐assisted electrochemical water splitting, S‐PtPbBi MNSs only require a low cell voltage of 0.60 V to achieve a current density of 10 mA cm−2. The anion exchange membrane electrolyzer utilizing S‐PtPbBi MNSs catalyst can drive a current density of 500 mA cm−2 at 1.63 V, along with exceptional stability for 200 h. Density functional theory calculations reveal that thiol modification facilitates the adsorption of reactants and enhances the electron transfer between the catalyst and key intermediate. This work provides deep insights into ligand modification‐induced construction of novel catalysts and creates new opportunities for small molecule‐assisted water splitting for efficient production of hydrogen.
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Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China

Shunde Innovation School University of Science and Technology Beijing Foshan 528399 China

State Key Laboratory of Nuclear Power Safety Technology and Equipment University of Science and Technology Beijing Beijing 100083 China

Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China

Key Laboratory of Quantum Materials and Devices of Ministry of Education School of Physics Southeast University Nanjing 211189 China

School of Instrument Science and Opto‐Electronics Engineering Beijing Information Science and Technology University Beijing 100192 China

Department of Chemical and Biological Engineering & Energy Institute The Hong Kong University of Science and Technology Hong Kong 999077 China

Guangzhou HKUST Fok Ying Tung Research Institute Nansha Guangzhou 511458 China

Funding

National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Basic and Applied Basic Research Foundation of Guangdong Province · National Key Research and Development Program of China · Beijing Nova Program

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