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

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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

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Publication details

The article was received on 18 Oct 2017, accepted on 16 Nov 2017 and first published on 16 Nov 2017


Article type: Paper
DOI: 10.1039/C7AY02459B
Citation: Anal. Methods, 2018, Advance Article
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    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, Advance Article , DOI: 10.1039/C7AY02459B

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