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Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing

In recent years, nitrite pollution has become a subject of great concern for human lives, involving a number of fields, such as environment, food industry and biological process. However, the effective detection of nitrite is an instant demand as well as an unprecedented challenge. Here, a novel nit...

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Detalles Bibliográficos
Autores principales: Xi, Rui, Zhang, Shao-Hui, Zhang, Long, Wang, Chao, Wang, Lu-Jia, Yan, Jing-Hui, Pan, Ge-Bo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387133/
https://www.ncbi.nlm.nih.gov/pubmed/30709039
http://dx.doi.org/10.3390/s19030606
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author Xi, Rui
Zhang, Shao-Hui
Zhang, Long
Wang, Chao
Wang, Lu-Jia
Yan, Jing-Hui
Pan, Ge-Bo
author_facet Xi, Rui
Zhang, Shao-Hui
Zhang, Long
Wang, Chao
Wang, Lu-Jia
Yan, Jing-Hui
Pan, Ge-Bo
author_sort Xi, Rui
collection PubMed
description In recent years, nitrite pollution has become a subject of great concern for human lives, involving a number of fields, such as environment, food industry and biological process. However, the effective detection of nitrite is an instant demand as well as an unprecedented challenge. Here, a novel nitrite sensor was fabricated by electrochemical deposition of palladium and platinum (Pd-Pt) nanocomposites on porous gallium nitride (PGaN). The obtained Pd-Pt/PGaN sensor provides abundant electrocatalytic sites, endowing it with excellent performances for nitrite detection. The sensor also shows a low detection limit of 0.95 µM, superior linear ampere response and high sensitivity (150 µA/mM for 1 to 300 µM and 73 µA/mM for 300 to 3000 µM) for nitrite. In addition, the Pd-Pt/PGaN sensor was applied and evaluated in the determination of nitrite from the real environmental samples. The experimental results demonstrate that the sensor has good reproducibility and long-term stability. It provides a practical way for rapidly and effectively monitoring nitrite content in the practical application.
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spelling pubmed-63871332019-02-26 Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing Xi, Rui Zhang, Shao-Hui Zhang, Long Wang, Chao Wang, Lu-Jia Yan, Jing-Hui Pan, Ge-Bo Sensors (Basel) Article In recent years, nitrite pollution has become a subject of great concern for human lives, involving a number of fields, such as environment, food industry and biological process. However, the effective detection of nitrite is an instant demand as well as an unprecedented challenge. Here, a novel nitrite sensor was fabricated by electrochemical deposition of palladium and platinum (Pd-Pt) nanocomposites on porous gallium nitride (PGaN). The obtained Pd-Pt/PGaN sensor provides abundant electrocatalytic sites, endowing it with excellent performances for nitrite detection. The sensor also shows a low detection limit of 0.95 µM, superior linear ampere response and high sensitivity (150 µA/mM for 1 to 300 µM and 73 µA/mM for 300 to 3000 µM) for nitrite. In addition, the Pd-Pt/PGaN sensor was applied and evaluated in the determination of nitrite from the real environmental samples. The experimental results demonstrate that the sensor has good reproducibility and long-term stability. It provides a practical way for rapidly and effectively monitoring nitrite content in the practical application. MDPI 2019-01-31 /pmc/articles/PMC6387133/ /pubmed/30709039 http://dx.doi.org/10.3390/s19030606 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xi, Rui
Zhang, Shao-Hui
Zhang, Long
Wang, Chao
Wang, Lu-Jia
Yan, Jing-Hui
Pan, Ge-Bo
Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing
title Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing
title_full Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing
title_fullStr Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing
title_full_unstemmed Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing
title_short Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing
title_sort electrodeposition of pd-pt nanocomposites on porous gan for electrochemical nitrite sensing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387133/
https://www.ncbi.nlm.nih.gov/pubmed/30709039
http://dx.doi.org/10.3390/s19030606
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