Enhanced Sub-ppm NH(3) Gas Sensing Performance of PANI/TiO(2) Nanocomposites at Room Temperature

PANI/TiO(2) nanocomposites spheres were synthesized using a simple and efficient one-step hydrothermal process. The morphology and structure of PANI/TiO(2) nanocomposites spheres were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (T...

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Detalles Bibliográficos
Autores principales: Zhu, Chonghui, Cheng, Xiaoli, Dong, Xin, Xu, Ying ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6201155/
https://www.ncbi.nlm.nih.gov/pubmed/30406078
http://dx.doi.org/10.3389/fchem.2018.00493
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author Zhu, Chonghui
Cheng, Xiaoli
Dong, Xin
Xu, Ying ming
author_facet Zhu, Chonghui
Cheng, Xiaoli
Dong, Xin
Xu, Ying ming
author_sort Zhu, Chonghui
collection PubMed
description PANI/TiO(2) nanocomposites spheres were synthesized using a simple and efficient one-step hydrothermal process. The morphology and structure of PANI/TiO(2) nanocomposites spheres were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques. The PANI/TiO(2) nanocomposite sphere-based sensor exhibits good selectivity, sensitivity (5.4 to 100 ppm), repeatability, long-term stability and low detection limit (0.5 ppm) to ammonia at room temperature (20 ± 5°C). It also shows a good linearity relationship in the range of 0.5–5 and 5–100 ppm. The excellent NH(3) sensing performance is mainly due to the formation of the p-n heterostructure in the nanocomposites.
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spelling pubmed-62011552018-11-07 Enhanced Sub-ppm NH(3) Gas Sensing Performance of PANI/TiO(2) Nanocomposites at Room Temperature Zhu, Chonghui Cheng, Xiaoli Dong, Xin Xu, Ying ming Front Chem Chemistry PANI/TiO(2) nanocomposites spheres were synthesized using a simple and efficient one-step hydrothermal process. The morphology and structure of PANI/TiO(2) nanocomposites spheres were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques. The PANI/TiO(2) nanocomposite sphere-based sensor exhibits good selectivity, sensitivity (5.4 to 100 ppm), repeatability, long-term stability and low detection limit (0.5 ppm) to ammonia at room temperature (20 ± 5°C). It also shows a good linearity relationship in the range of 0.5–5 and 5–100 ppm. The excellent NH(3) sensing performance is mainly due to the formation of the p-n heterostructure in the nanocomposites. Frontiers Media S.A. 2018-10-18 /pmc/articles/PMC6201155/ /pubmed/30406078 http://dx.doi.org/10.3389/fchem.2018.00493 Text en Copyright © 2018 Zhu, Cheng, Dong and Xu. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Zhu, Chonghui
Cheng, Xiaoli
Dong, Xin
Xu, Ying ming
Enhanced Sub-ppm NH(3) Gas Sensing Performance of PANI/TiO(2) Nanocomposites at Room Temperature
title Enhanced Sub-ppm NH(3) Gas Sensing Performance of PANI/TiO(2) Nanocomposites at Room Temperature
title_full Enhanced Sub-ppm NH(3) Gas Sensing Performance of PANI/TiO(2) Nanocomposites at Room Temperature
title_fullStr Enhanced Sub-ppm NH(3) Gas Sensing Performance of PANI/TiO(2) Nanocomposites at Room Temperature
title_full_unstemmed Enhanced Sub-ppm NH(3) Gas Sensing Performance of PANI/TiO(2) Nanocomposites at Room Temperature
title_short Enhanced Sub-ppm NH(3) Gas Sensing Performance of PANI/TiO(2) Nanocomposites at Room Temperature
title_sort enhanced sub-ppm nh(3) gas sensing performance of pani/tio(2) nanocomposites at room temperature
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6201155/
https://www.ncbi.nlm.nih.gov/pubmed/30406078
http://dx.doi.org/10.3389/fchem.2018.00493
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AT chengxiaoli enhancedsubppmnh3gassensingperformanceofpanitio2nanocompositesatroomtemperature
AT dongxin enhancedsubppmnh3gassensingperformanceofpanitio2nanocompositesatroomtemperature
AT xuyingming enhancedsubppmnh3gassensingperformanceofpanitio2nanocompositesatroomtemperature

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