Considering that HS is a hazardous gas that poses a significant risk to people's lives, research into HS gas sensors has garnered a lot of interest. This work reports a CuO/ZnO multifaceted nanostructures(NS) created by heat treating Cu/ZIF-8 impregnation precursors, and their microstructure and gas sensing characteristics were examined using various characterization techniques (XRD, XPS, SEM, TEM, and BET). The as-prepared hollow CuO/ZnO multifunctional nanostructures had a high gas response value (425@50 ppm HS gas), quick response and recovery times (57/191s @20 ppm), a low limit of detection (1.6@500 ppb HS), good humidity resistance and highly selective towards HS gas. The hollow CuO/ZnO multifaceted nanostructures possessed enhanced gas sensing capabilities which may be related to their porous hollow nanostructures, the manufactured p-CuO/n-ZnO heterojunctions, and the spillover effect between CuO and HS.
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| http://dx.doi.org/10.1016/j.chemosphere.2023.137827 | DOI Listing |
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