Статья

Catalytic Mechanism of Nanocrystalline and Amorphous Matrix in Fe‐Based Microwires for Advanced Oxidation

Yonghui WangSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaBo LiSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaYi‐Fan CuiSchool of Physics Harbin Institute of Technology Harbin 150001 ChinaYan DuSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaZhen‐Qiang YuSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaLunyong ZhangSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaZhiliang NingSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaXun SunJianhua LiBeijing Engineering Research Center of Detection and Application for Weak Magnetic Field Department of Physics University of Science and Technology Beijing Beijing 100083 ChinaXiaobin TangState Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150001 ChinaHeng LiangState Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150001 ChinaQi WangSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaErwin PengNational Key Laboratory of Space Environment and Matter Behaviors Harbin Institute of Technology Harbin 150001 ChinaJuntao HuoKey Laboratory of Magnetic Materials and Devices and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 ChinaGang WangLaboratory for Microstructures Institute of Materials Shanghai University Shanghai 20044 ChinaJianfei SunSchool of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 ChinaSida JiangFrontier Science Center for Interaction between Space Environment and Matter Harbin Institute of Technology Harbin 150001 China

2025en

ABI

Аннотация

Abstract The sustainable management of water resources is a critical global challenge, with advanced oxidation processes emerging as a promising solution for addressing environmental water pollution. However, the clear trade‐off between catalytic activity and stability in existing environmental catalysts hinders their broader application. In this study, a nanocrystalline/amorphous (N/A) microwire catalyst is developed, featuring a design that regulates nanocrystal size while preserving a pure amorphous matrix. Unlike brittle annealed N/A microwires subjected to structural relaxation, the as‐cast N/A microwires demonstrate outstanding catalytic performance for advanced oxidation. They can completely degrade pollutants within 60 s and maintain their activity for up to 40 reuse cycles. Theoretical calculations and material characterizations reveal that the exceptional properties of the as‐cast N/A microwires arise from the combined effects of residual stresses stored in the amorphous matrix and the synergistic effect between nanocrystals and amorphous phases. Moreover, the optimally sized nanocrystalline phase optimizes the atomic arrangement and induces an atomic structure with a low atomic coordination number, providing abundant active sites. This design also enhances the adsorption characteristics of persulfate and accelerates electron transfer. These findings offer a novel design framework for developing efficient and stable catalysts for wastewater treatment.

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Идентификаторы

DOI: 10.1002/adfm.202425912

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar