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Construction of 1D SnO(2)-coated ZnO nanowire heterojunction for their improved n-butylamine sensing performances

One-dimensional (1D) SnO(2)-coated ZnO nanowire (SnO(2)/ZnO NW) N-N heterojunctions were successfully constructed by an effective solvothermal treatment followed with calcination at 400 °C. The obtained samples were characterized by means of XRD, SEM, TEM, Scanning TEM coupled with EDS and XPS analy...

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Autores principales: Wang, Liwei, Li, Jintao, Wang, Yinghui, Yu, Kefu, Tang, Xingying, Zhang, Yuanyuan, Wang, Shaopeng, Wei, Chaoshuai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5062068/
https://www.ncbi.nlm.nih.gov/pubmed/27734963
http://dx.doi.org/10.1038/srep35079
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author Wang, Liwei
Li, Jintao
Wang, Yinghui
Yu, Kefu
Tang, Xingying
Zhang, Yuanyuan
Wang, Shaopeng
Wei, Chaoshuai
author_facet Wang, Liwei
Li, Jintao
Wang, Yinghui
Yu, Kefu
Tang, Xingying
Zhang, Yuanyuan
Wang, Shaopeng
Wei, Chaoshuai
author_sort Wang, Liwei
collection PubMed
description One-dimensional (1D) SnO(2)-coated ZnO nanowire (SnO(2)/ZnO NW) N-N heterojunctions were successfully constructed by an effective solvothermal treatment followed with calcination at 400 °C. The obtained samples were characterized by means of XRD, SEM, TEM, Scanning TEM coupled with EDS and XPS analysis, which confirmed that the outer layers of N-type SnO(2) nanoparticles (avg. 4 nm) were uniformly distributed onto our pre-synthesized n-type ZnO nanowire supports (diameter 80~100 nm, length 12~16 μm). Comparisons of the gas sensing performances among pure SnO(2), pure ZnO NW and the as-fabricated SnO(2)/ZnO NW heterojunctions revealed that after modification, SnO(2)/ZnO NW based sensor exhibited remarkably improved response, fast response and recovery speeds, good selectivity and excellent reproducibility to n-butylamine gas, indicating it can be used as promising candidates for high-performance organic amine sensors. The enhanced gas-sensing behavior should be attributed to the unique 1D wire-like morphology of ZnO support, the small size effect of SnO(2) nanoparticles, and the semiconductor depletion layer model induced by the strong interfacial interaction between SnO(2) and ZnO of the heterojunctions. The as-prepared SnO(2)/ZnO NW heterojunctions may also supply other novel applications in the fields like photocatalysis, lithium-ion batteries, waste water purification, and so on.
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spelling pubmed-50620682016-10-24 Construction of 1D SnO(2)-coated ZnO nanowire heterojunction for their improved n-butylamine sensing performances Wang, Liwei Li, Jintao Wang, Yinghui Yu, Kefu Tang, Xingying Zhang, Yuanyuan Wang, Shaopeng Wei, Chaoshuai Sci Rep Article One-dimensional (1D) SnO(2)-coated ZnO nanowire (SnO(2)/ZnO NW) N-N heterojunctions were successfully constructed by an effective solvothermal treatment followed with calcination at 400 °C. The obtained samples were characterized by means of XRD, SEM, TEM, Scanning TEM coupled with EDS and XPS analysis, which confirmed that the outer layers of N-type SnO(2) nanoparticles (avg. 4 nm) were uniformly distributed onto our pre-synthesized n-type ZnO nanowire supports (diameter 80~100 nm, length 12~16 μm). Comparisons of the gas sensing performances among pure SnO(2), pure ZnO NW and the as-fabricated SnO(2)/ZnO NW heterojunctions revealed that after modification, SnO(2)/ZnO NW based sensor exhibited remarkably improved response, fast response and recovery speeds, good selectivity and excellent reproducibility to n-butylamine gas, indicating it can be used as promising candidates for high-performance organic amine sensors. The enhanced gas-sensing behavior should be attributed to the unique 1D wire-like morphology of ZnO support, the small size effect of SnO(2) nanoparticles, and the semiconductor depletion layer model induced by the strong interfacial interaction between SnO(2) and ZnO of the heterojunctions. The as-prepared SnO(2)/ZnO NW heterojunctions may also supply other novel applications in the fields like photocatalysis, lithium-ion batteries, waste water purification, and so on. Nature Publishing Group 2016-10-13 /pmc/articles/PMC5062068/ /pubmed/27734963 http://dx.doi.org/10.1038/srep35079 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wang, Liwei
Li, Jintao
Wang, Yinghui
Yu, Kefu
Tang, Xingying
Zhang, Yuanyuan
Wang, Shaopeng
Wei, Chaoshuai
Construction of 1D SnO(2)-coated ZnO nanowire heterojunction for their improved n-butylamine sensing performances
title Construction of 1D SnO(2)-coated ZnO nanowire heterojunction for their improved n-butylamine sensing performances
title_full Construction of 1D SnO(2)-coated ZnO nanowire heterojunction for their improved n-butylamine sensing performances
title_fullStr Construction of 1D SnO(2)-coated ZnO nanowire heterojunction for their improved n-butylamine sensing performances
title_full_unstemmed Construction of 1D SnO(2)-coated ZnO nanowire heterojunction for their improved n-butylamine sensing performances
title_short Construction of 1D SnO(2)-coated ZnO nanowire heterojunction for their improved n-butylamine sensing performances
title_sort construction of 1d sno(2)-coated zno nanowire heterojunction for their improved n-butylamine sensing performances
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5062068/
https://www.ncbi.nlm.nih.gov/pubmed/27734963
http://dx.doi.org/10.1038/srep35079
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