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• W2963901115 endingPage "120919" @default.
• W2963901115 startingPage "120919" @default.
• W2963901115 abstract "Gas sensors play vital roles in air pollution monitoring. Despite considerable progress in improving the room-temperature gas sensing sensitivities and rates of materials, comparably less attention is paid to the sensor selectivity. Here, ultrathin ZnO nanorods (˜15 nm) were synthesized by a nanoseed-assisted wet chemical approach and subsequently functionalized by Au nanoparticles by a photoreduction method. The hybrid material exhibited visible-light-activity owing to the surface plasmon resonance (SPR) effects of Au nanoparticles. The ZnO/Au hybrids were assembled into a high-performance, optically-controlled gas sensor operating at room temperature, which was found to be more selective to NH3 in dark but showed high selectivity to NO2 under visible-light illumination (λ = 532 nm). Moreover, the sensors exhibited high response and short response and recovery times as well as excellent reversibility and selectivity at room temperature. Such visible-light-modulated dual gas selectivity could be mainly attributed to the opposite direction of electron transfer between ZnO and Au nanoparticles in dark and under visible-light illumination, which led to the different surface depletion characteristics of the ZnO nanorods. In addition, the ultrathin diameters of nanorods also synergistically contributed to the light-controlled dual gas selectivity. The presently developed light modulation strategy provides an alternative approach to highly-selective and dual-functional gas sensors operating at room temperature." @default.
• W2963901115 created "2019-07-30" @default.
• W2963901115 creator A5002884818 @default.
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• W2963901115 date "2020-01-01" @default.
• W2963901115 modified "2023-10-09" @default.
• W2963901115 title "Room-temperature gas sensors based on ZnO nanorod/Au hybrids: Visible-light-modulated dual selectivity to NO2 and NH3" @default.
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• W2963901115 doi "https://doi.org/10.1016/j.jhazmat.2019.120919" @default.
• W2963901115 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31369934" @default.
• W2963901115 hasPublicationYear "2020" @default.
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