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Intrinsic Peroxidase Catalytic Activity of Fe 7 S 8 Nanowires Templated from [Fe 16 S 20 ]/Diethylenetriamine Hybrid Nanowires
Author(s) -
Yao WeiTang,
Zhu HaiZhou,
Li WeiGu,
Yao HongBin,
Wu YuCheng,
Yu ShuHong
Publication year - 2013
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201300075
Subject(s) - nanowire , catalysis , materials science , diethylenetriamine , chemical engineering , nanotechnology , inorganic chemistry , chemistry , organic chemistry , composite material , engineering
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 Fe 7 S 8 nanowires templated by thermal decomposition of [Fe 16 S 20 ]/diethylenetriamine hybrid nanowires under an argon atmosphere are reported. As‐prepared Fe 7 S 8 nanowires show typical Michaelis–Menten kinetics and good affinity to both H 2 O 2 and 3,3′,5,5′‐tetramethylbenzidine. At pH 7.0, the constructed UV/Vis sensor showed a linear range for the detection of H 2 O 2 from 0.5 to 150 μ M with a correlation coefficient of 0.9998. The H 2 O 2 sensor based on the Fe 7 S 8 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 Fe 7 S 8 nanowires powerful tools for potential applications as an “artificial peroxidase” in biosensors and biotechnology.