Iron-substituted SBA-15 microparticles: a peroxidase-like catalyst for H2O2 detection

Sen Liu; Jingqi Tian; Lei Wang; Yonglan Luo; Guohui Chang; Xuping Sun

doi:10.1039/C1AN15654C

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Iron-substituted SBA-15 microparticles: a peroxidase-like catalyst for H₂O₂ detection†

Sen Liu,^a Jingqi Tian,^ab Lei Wang,^a Yonglan Luo,^a Guohui Chang^a and Xuping Sun*^a

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* Corresponding authors

^a State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
E-mail: sunxp@ciac.jl.cn
Fax: +86-431-85262065
Tel: +86-431-85262065

^b Graduate School of the Chinese Academy of Sciences, Beijing, China

Abstract

In this communication, we demonstrate our recent finding that iron-substituted SBA-15 (Fe-SBA-15) microparticles possess intrinsic peroxidase-like activity and can catalyze the oxidation of peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB) by H₂O₂ to develop a blue color in aqueous solution, leading to a simple approach towards colorimetric detection of H₂O₂ with a linear detection range from 0.4 μM to 15 μM (r = 0.997) and a detection limit of 0.2 μM.

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Article information

DOI: https://doi.org/10.1039/C1AN15654C
Article type: Communication
Submitted: 28 Jul 2011
Accepted: 21 Aug 2011
First published: 30 Sep 2011

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Analyst, 2011,136, 4894-4897

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Iron-substituted SBA-15 microparticles: a peroxidase-like catalyst for H₂O₂ detection

S. Liu, J. Tian, L. Wang, Y. Luo, G. Chang and X. Sun, Analyst, 2011, 136, 4894 DOI: 10.1039/C1AN15654C

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