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- W2791897466 abstract "We present a dual sensitization gas sensor for selective detection of either H2S or C2H5OH gases, based on ZnO/CuO nanoparticle (NP)-decorated MWCNTs. First, Cu-Zn layers of three different thickness (3, 6, 9 nm) were successfully deposited on the surfaces of CNTs by a sputtering process and subsequently converted to their corresponding oxides by thermal annealing. The gas sensing characteristics of metal oxide decorated-MWCNTs were studied in the presence of three gases, namely NO2, H2S, and C2H5OH. The best sensing properties were obtained when the Cu-Zn deposition layer was 6 nm thick. The optimized sensor showed extraordinary responses to both H2S and C2H5OH gases at working temperatures of 100 °C and 200 °C, respectively. Therefore, selectivity was tuned by selection of the working temperature. The sensing mechanisms of the metal oxide-decorated CNTs sensors are discussed in detail. The approach described, namely co-decoration of the surfaces of MWCNTs with different metal oxides, will be of great utility to researchers who wish to fabricate dual sensitive gas sensors." @default.
- W2791897466 created "2018-03-29" @default.
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- W2791897466 date "2018-07-01" @default.
- W2791897466 modified "2023-10-03" @default.
- W2791897466 title "Dual sensitization of MWCNTs by co-decoration with p- and n-type metal oxide nanoparticles" @default.
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- W2791897466 doi "https://doi.org/10.1016/j.snb.2018.02.179" @default.
- W2791897466 hasPublicationYear "2018" @default.
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