Kgomo-Masoga, MBDhlamini, MSMhlongo, Gugu H2025-09-252025-09-2520252475-1472DOI: 10.1109/LSENS.2025.3591892http://hdl.handle.net/10204/14396Herein, we report a rapid detection of ethanol of hierarchically featured cube In2O3 structures induced by Mn and Co derived from hydrothermal approach. Systematic investigation and comparison of the structural, morphological, and textural features of undoped, Mn, and Co–In2O3 were probed to gain more understanding about their gas sensing performance. A sensor based on 1 mol% Mn-doped In2O3 demonstrated enhanced ethanol gas sensing characteristics with a response of 35.5 toward 50 ppm of ethanol at minimal working temperature of 80 °C, good selectivity along with quick response/recovery times of 7/161 s. The excellent gas sensing results stem from the particle-interlinked nanocubes resembled by 3-D hierarchical features, which endowed large content of reactive sites for the adsorption of ethanol gas due to high surface area and mesoporous features, which permitted ethanol gas molecules diffusion in/out of the active sensing layer.AbstractenEthanol detectionGas sensing performanceEthanol gas detectionArticleN/A