Issue 1, 2018

Enhanced peroxidase-like activity of Mo-doped ceria nanoparticles for sensitive colorimetric detection of glucose

Abstract

The development of highly efficient nanomaterial-based mimetic enzymes is much needed to replace natural enzymes due to their low cost, high stability and efficient catalytic ability. Herein, multiple Mo-doped CeO2 nanoparticles (Mo/CeO2 NPs) with different molar ratios of Mo were synthesized using a facile microwave-assisted method. For characterizing the as-prepared Mo/CeO2 NPs, XRD, TEM, HRTEM, BET and XPS have been performed systematically. The peroxidase-like activity of Mo/CeO2 NPs was investigated, and they exhibited enhanced peroxidase-like activity in comparison to that of pure CeO2 NPs, the best peroxidase-like activity was obtained for the Mo/CeO2 NPs when the molar ratio of Mo was 9%. On the basis of the high activity of Mo/CeO2 NPs, the reaction provides a simple, sensitive and selective method for colorimetric detection of glucose with the detection limit of 4 × 10−7 mol L−1 and in a dynamic range from 5 × 10−7 to 5 × 10−5 mol L−1. This work will pave a way for high throughput synthesis of other ultra-small doped metal oxide nanoparticles, which have bright prospects in biomedical analysis.

Graphical abstract: Enhanced peroxidase-like activity of Mo-doped ceria nanoparticles for sensitive colorimetric detection of glucose

Supplementary files

Article information

Article type
Paper
Submitted
18 Oct 2017
Accepted
16 Nov 2017
First published
16 Nov 2017

Anal. Methods, 2018,10, 76-83

Enhanced peroxidase-like activity of Mo-doped ceria nanoparticles for sensitive colorimetric detection of glucose

X. Jiao, W. Liu, D. Wu, W. Liu and H. Song, Anal. Methods, 2018, 10, 76 DOI: 10.1039/C7AY02459B

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