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A nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide
Hydrogen peroxide (H(2)O(2)) plays important signaling roles in normal physiology and disease. However, analyzing the actions of H(2)O(2) is often impeded by the difficulty in detecting this molecule. Herein, we report a novel nanocomposite-based electrochemical sensor for non-enzymatic detection of...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Impact Journals LLC
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5355075/ https://www.ncbi.nlm.nih.gov/pubmed/28035076 http://dx.doi.org/10.18632/oncotarget.14308 |
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author | Du, Xin Chen, Yuan Dong, Wenhao Han, Bingkai Liu, Min Chen, Qiang Zhou, Jun |
author_facet | Du, Xin Chen, Yuan Dong, Wenhao Han, Bingkai Liu, Min Chen, Qiang Zhou, Jun |
author_sort | Du, Xin |
collection | PubMed |
description | Hydrogen peroxide (H(2)O(2)) plays important signaling roles in normal physiology and disease. However, analyzing the actions of H(2)O(2) is often impeded by the difficulty in detecting this molecule. Herein, we report a novel nanocomposite-based electrochemical sensor for non-enzymatic detection of H(2)O(2). Graphene oxide (GO) was selected as the dopant for the synthesis of polyaniline (PANI), leading to the successful fabrication of a water-soluble and stable GO-PANI composite. GO-PANI was subsequently subject to cyclic voltammetry to generate reduced GO-PANI (rGO-PANI), enhancing the conductivity of the material. Platinum nanoparticles (PtNPs) were then electrodeposited on the surface of the rGO-PANI-modified glassy carbon electrode (GCE) to form an electrochemical H(2)O(2) sensor. Compared to previously reported sensors, the rGO-PANI-PtNP/GCE exhibited an expanded linear range, higher sensitivity, and lower detection limit in the quantification of H(2)O(2). In addition, the sensor displayed outstanding reproducibility and selectivity in real-sample examination. Our study suggests that the rGO-PANI-PtNP/GCE may have broad utility in H(2)O(2) detection under physiological and pathological conditions. |
format | Online Article Text |
id | pubmed-5355075 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Impact Journals LLC |
record_format | MEDLINE/PubMed |
spelling | pubmed-53550752017-04-15 A nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide Du, Xin Chen, Yuan Dong, Wenhao Han, Bingkai Liu, Min Chen, Qiang Zhou, Jun Oncotarget Research Paper Hydrogen peroxide (H(2)O(2)) plays important signaling roles in normal physiology and disease. However, analyzing the actions of H(2)O(2) is often impeded by the difficulty in detecting this molecule. Herein, we report a novel nanocomposite-based electrochemical sensor for non-enzymatic detection of H(2)O(2). Graphene oxide (GO) was selected as the dopant for the synthesis of polyaniline (PANI), leading to the successful fabrication of a water-soluble and stable GO-PANI composite. GO-PANI was subsequently subject to cyclic voltammetry to generate reduced GO-PANI (rGO-PANI), enhancing the conductivity of the material. Platinum nanoparticles (PtNPs) were then electrodeposited on the surface of the rGO-PANI-modified glassy carbon electrode (GCE) to form an electrochemical H(2)O(2) sensor. Compared to previously reported sensors, the rGO-PANI-PtNP/GCE exhibited an expanded linear range, higher sensitivity, and lower detection limit in the quantification of H(2)O(2). In addition, the sensor displayed outstanding reproducibility and selectivity in real-sample examination. Our study suggests that the rGO-PANI-PtNP/GCE may have broad utility in H(2)O(2) detection under physiological and pathological conditions. Impact Journals LLC 2017-01-04 /pmc/articles/PMC5355075/ /pubmed/28035076 http://dx.doi.org/10.18632/oncotarget.14308 Text en Copyright: © 2017 Du et al. https://creativecommons.org/licenses/by/3.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Paper Du, Xin Chen, Yuan Dong, Wenhao Han, Bingkai Liu, Min Chen, Qiang Zhou, Jun A nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide |
title | A nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide |
title_full | A nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide |
title_fullStr | A nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide |
title_full_unstemmed | A nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide |
title_short | A nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide |
title_sort | nanocomposite-based electrochemical sensor for non-enzymatic detection of hydrogen peroxide |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5355075/ https://www.ncbi.nlm.nih.gov/pubmed/28035076 http://dx.doi.org/10.18632/oncotarget.14308 |
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