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Issue 2, 2012
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Fe(iii)-based coordination polymernanoparticles: peroxidase-like catalytic activity and their application to hydrogen peroxide and glucose detection

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Abstract

Fe(III)-based coordination polymer nanoparticles (FeCPNPs) have been prepared for the first time by simple mixing of ferric chloride and sodium hexametaphosphate (SHAM) aqueous solutions at room temperature. It was found that such FeCPNPs possess peroxidase-like activity capable of catalyzing the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) by H2O2 turning the solution blue in color. Based on these findings, a simple, sensitive and selective colorimetric assay to detect H2O2 was developed, with the linear range and detection limit estimated to be from 1 μM to 50 μM (r = 0.997) and 0.4 μM, respectively. The application of this colorimetric assay to glucose detection both in buffer solution and diluted serum has also been demonstrated successfully. This glucose sensor exhibits excellent performance with a linear range from 2 μM to 20 μM (r = 0.985) and a detection limit of about 1 μM.

Graphical abstract: Fe(iii)-based coordination polymer nanoparticles: peroxidase-like catalytic activity and their application to hydrogen peroxide and glucose detection

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Supplementary files

Article information


Submitted
09 Sep 2011
Accepted
04 Oct 2011
First published
17 Oct 2011

Catal. Sci. Technol., 2012,2, 432-436
Article type
Paper

Fe(III)-based coordination polymer nanoparticles: peroxidase-like catalytic activity and their application to hydrogen peroxide and glucose detection

J. Tian, S. Liu, Y. Luo and X. Sun, Catal. Sci. Technol., 2012, 2, 432
DOI: 10.1039/C1CY00360G

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