Intrinsic Peroxidase Catalytic Activity of Fe7S8 Nanowires Templated from [Fe16S20]/Diethylenetriamine Hybrid Nanowires

Authors

  • Dr. Wei-Tang Yao,

    Corresponding author
    1. Laboratory of Functional Nanomaterials and Devices, School of Materials Science and Engineering, Hefei University of Technology, Hefei, Tunxi Road No.193, 230039 (P. R. China)
    • Laboratory of Functional Nanomaterials and Devices, School of Materials Science and Engineering, Hefei University of Technology, Hefei, Tunxi Road No.193, 230039 (P. R. China)
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  • Hai-Zhou Zhu,

    1. Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. China)
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  • Wei-Gu Li,

    1. Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. China)
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  • Hong-Bin Yao,

    1. Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. China)
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  • Prof. Dr. Yu-Cheng Wu,

    1. Laboratory of Functional Nanomaterials and Devices, School of Materials Science and Engineering, Hefei University of Technology, Hefei, Tunxi Road No.193, 230039 (P. R. China)
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  • Prof. Dr. Shu-Hong Yu

    Corresponding author
    1. Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. China)
    • Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (P. R. China)
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Abstract

Iron sulfide compounds are emerging as an important family of functional materials owing to their important properties and their applications in different technical fields. Well-defined Fe7S8 nanowires templated by thermal decomposition of [Fe16S20]/diethylenetriamine hybrid nanowires under an argon atmosphere are reported. As-prepared Fe7S8 nanowires show typical Michaelis–Menten kinetics and good affinity to both H2O2 and 3,3′,5,5′-tetramethylbenzidine. At pH 7.0, the constructed UV/Vis sensor showed a linear range for the detection of H2O2 from 0.5 to 150 μM with a correlation coefficient of 0.9998. The H2O2 sensor based on the Fe7S8 nanowires shows a highly sensitive response and has better stability than horseradish peroxidase when exposed to solutions with different pH values and temperatures. These excellent properties make the as-prepared Fe7S8 nanowires powerful tools for potential applications as an “artificial peroxidase” in biosensors and biotechnology.

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