Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors
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| Định dạng: | Bài Báo |
| Ngôn ngữ: | English |
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RSC Advances
2021
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| Truy cập trực tuyến: | https://pubs.rsc.org/en/content/articlelanding/2020/RA/D0RA02266G#!divAbstract https://dlib.phenikaa-uni.edu.vn/handle/PNK/1928 |
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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 |
| _version_ |
1751856255478005760 |
| score |
8.887836 |