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Nanomaterials 2019, 9(2), 210; https://doi.org/10.3390/nano9020210

Fe3O4 Nanoparticles Loaded on Lignin Nanoparticles Applied as a Peroxidase Mimic for the Sensitively Colorimetric Detection of H2O2

1
College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
2
Guangxi Key Lab of Clean Pulp & Papermaking and pollution Control, Nanning 530004, China
*
Author to whom correspondence should be addressed.
Received: 28 January 2019 / Accepted: 1 February 2019 / Published: 6 February 2019
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Abstract

Lignin is the second largest naturally renewable resource and is primarily a by-product of the pulp and paper industry; however, its inefficient use presents a challenge. In this work, Fe3O4 nanoparticles loaded on lignin nanoparticles (Fe3O4@LNPs) were prepared by the self-assembly method and it possessed an enhanced peroxidase-like activity. Fe3O4@LNPs catalyzed the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H2O2 to generate a blue color, was observable by the naked eye. Under the optimal conditions, Fe3O4@LNPs showed the ability of sensitive colorimetric detection of H2O2within a range of 5–100 μM and the limit of detection was 2 μM. The high catalytic activity of Fe3O4@LNPs allows its prospective use in a wide variety of applications, including clinical diagnosis, food safety, and environmental monitoring. View Full-Text
Keywords: Fe3O4 nanoparticles; Lignin nanoparticles; peroxidase mimic; colorimetric; H2O2 detection Fe3O4 nanoparticles; Lignin nanoparticles; peroxidase mimic; colorimetric; H2O2 detection
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhang, Q.; Li, M.; Guo, C.; Jia, Z.; Wan, G.; Wang, S.; Min, D. Fe3O4 Nanoparticles Loaded on Lignin Nanoparticles Applied as a Peroxidase Mimic for the Sensitively Colorimetric Detection of H2O2. Nanomaterials 2019, 9, 210.

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