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dc.contributor.advisorNguyen, Van Duy-
dc.contributor.advisorChu, Manh Hung-
dc.contributor.advisorNguyen, Van Hieu-
dc.contributor.advisorHo, Huu Hau-
dc.contributor.advisorNguyen, Duc Hoa-
dc.contributor.authorTran, Thi Ngoc Hoa-
dc.date.accessioned2021-07-05T07:15:11Z-
dc.date.available2021-07-05T07:15:11Z-
dc.date.issued2021-
dc.identifier.urihttps://pubs.rsc.org/en/content/articlelanding/2020/RA/D0RA02266G#!divAbstract-
dc.identifier.urihttps://dlib.phenikaa-uni.edu.vn/handle/PNK/1928-
dc.descriptionQ1vi
dc.description.abstractSnO2 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.vi
dc.language.isoenvi
dc.publisherRSC Advancesvi
dc.titleDip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensorsvi
dc.typeArticlevi
eperson.identifier.doi10.1039/D0RA02266G-
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