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Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors

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Main Author: Tran, Thi Ngoc Hoa
Other Authors: Nguyen, Van Duy
Format: Article
Language:English
Published: RSC Advances 2021
Online Access:https://pubs.rsc.org/en/content/articlelanding/2020/RA/D0RA02266G#!divAbstract
https://dlib.phenikaa-uni.edu.vn/handle/PNK/1928
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spelling oai:localhost:PNK-19282022-08-17T05:54:45Z Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors Tran, Thi Ngoc Hoa Nguyen, Van Duy Chu, Manh Hung Nguyen, Van Hieu Ho, Huu Hau Nguyen, Duc Hoa Q1 SnO2 nanowires (NWs) are used in gas sensors, but their response to highly toxic gas H2S is low. Thus, their performance toward the effective detection of low-level H2S in air should be improved for environmental-pollution control and monitoring. Herein, Ag2O nanoparticle decorated SnO2 NWs were prepared by a simple on-chip growth and subsequent dip-coating method. The amount of decorated Ag2O nanoparticles on the surface of SnO2 NWs was modified by changing the concentration of AgNO3 solution and/or dipping times. Gas-sensing measurements were conducted at various working temperatures (200–400 °C) toward different H2S concentrations ranging within 0.1–1 ppm. The selectivity of Ag2O-decorated SnO2 NW sensors for ammonia and hydrogen gases was tested. Results confirmed that the Ag2O-decorated SnO2 NW sensors had excellent response, selectivity, and reproducibility. The gas-sensing mechanism was interpreted under the light of energy-band bending by sulfurization, which converted the p–n junction into n–n, thereby significantly enhancing the sensing performance. 2021-07-05T07:15:11Z 2021-07-05T07:15:11Z 2021 Article https://pubs.rsc.org/en/content/articlelanding/2020/RA/D0RA02266G#!divAbstract https://dlib.phenikaa-uni.edu.vn/handle/PNK/1928 10.1039/D0RA02266G en application/pdf RSC Advances
institution Digital Phenikaa
collection Digital Phenikaa
language English
description Q1
author2 Nguyen, Van Duy
author_facet Nguyen, Van Duy
Tran, Thi Ngoc Hoa
format Article
author Tran, Thi Ngoc Hoa
spellingShingle Tran, Thi Ngoc Hoa
Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors
author_sort Tran, Thi Ngoc Hoa
title Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors
title_short Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors
title_full Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors
title_fullStr Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors
title_full_unstemmed Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors
title_sort dip-coating decoration of ag2o nanoparticles on sno2 nanowires for high-performance h2s gas sensors
publisher RSC Advances
publishDate 2021
url https://pubs.rsc.org/en/content/articlelanding/2020/RA/D0RA02266G#!divAbstract
https://dlib.phenikaa-uni.edu.vn/handle/PNK/1928
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score 8.891145

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