journal article·2025-07

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

Yong‐Hui Wang, Bo Li, Yi‐Fan Cui, Yan Du, Zhen‐Wen Yu, Lun‐Yong Zhang, Zhi‐Liang Ning, Xun Sun, Jian‐Hua Li, Xiao‐Bin Tang, Heng Liang, Qi Wang, Peng E, Jun‐Tao Huo, Gang Wang, Jian‐Fei Sun, Si‐Da Jiang

Advanced Functional Materials· Volume 35· Issue 29
Publisher page

Abstract

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.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Metallic Glasses and Amorphous Alloys · Environmental remediation with nanomaterials · Nanomaterials for catalytic reactions

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

Affiliations

School of Physics Harbin Institute of Technology Harbin 150001 China

School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China

Guizhou Aerospace Institute of Measuring and Testing Technology Guiyang 550009 China

Beijing Engineering Research Center of Detection and Application for Weak Magnetic Field Department of Physics University of Science and Technology Beijing Beijing 100083 China

State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150001 China

National Key Laboratory of Space Environment and Matter Behaviors Harbin Institute of Technology Harbin 150001 China

Key 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 China

Laboratory for Microstructures Institute of Materials Shanghai University Shanghai 20044 China

National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of Technology Harbin 150001 China

Frontier Science Center for Interaction between Space Environment and Matter Harbin Institute of Technology Harbin 150001 China

Funding

Aeronautical Science Foundation of China · Natural Science Foundation of Heilongjiang Province · National Natural Science Foundation of China

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