Ramike, Matshidiso P.Ndungu, Patrick GathuraMamo, Messai A.2024-10-252024-10-252023-10-23Ramike, M.P.; Ndungu, P.G.; Mamo, M.A. Exploration of the Different Dimensions of Wurtzite ZnO Structure Nanomaterials as Gas Sensors at Room Temperature. Nanomaterials 2023, 13, 2810. https://DOI.org/10.3390/nano13202810.2079-4991 (online)10.3390/nano13202810http://hdl.handle.net/2263/98781DATA AVAILABILITY : Data is available when request made.SUPPLEMENTARY MATERIALS : FIGURE S1: Sensors performance measurement setup; FIGURE S2: FTIR spectra of the (a) synthesized ZnO nanostructures, i.e., nanoflowers (N.F.), nanosheets (N.S.), nanorods (N.R.), and nanoparticles (N.P.); (b) candle soot, and (c) purchased cellulose acetate respectively; FIGURE S3: BET isotherm; FIGURE S4: UV-vis diffuse reflectance spectra and bandgap energy values of the (a) synthesized ZnO nanostructures, i.e., nanoflowers (N.F.), nanosheets (N.S.), nanorods (N.R.), and nanoparticles (N.P.); (b) candle soot, and (c) purchased cellulose acetate; FIGURE S5. Dynamic response and recovery curves 3:1:1 mass ratio towards ethanol vapor (a) nanoparticles and (b) calibration curve; (c) nanorod and (d) its calibration curve; (e) nanoflower (f) its calibration curve; FIGURE S6. Dynamic response and recovery curves 2:1:1 mass ratio towards ethanol vapor (g) nanorod and (h) calibration curve; (i) nanosheet and (j) its calibration curve; (k) nanoflower (l) its calibration curve; FIGURE S7: Dynamic response and recovery curves 1:1:1 mass ratio of towards isopropanol vapor (a) nanorod and (b) calibration curve; (c) nanosheet and (d) its calibration curve; (e) nanoflower (f) its calibration curve; FIGURE S8: Static response and recovery curves 1:1:1 mass ratio of towards methanol; TABLE S1: Band gap energy (Eg), Average crystallite size (d) and surface area (A) of nanostructured oxides; TABLE S2: Summary of the performance of the fabricated sensors when detecting ethanol vapour; TABLE S3: Summary of the performance of the fabricated sensors when detecting isopropanol vapor [67–72].Please read abstract in the article.en© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.Semiconductor metal oxidesGas sensorVOCsPolymer compositesSensor performanceX-ray diffraction (XRD)Nitrogen sorptionFourier transform infrared (FTIR)Scanning electron microscopy (SEM)Raman spectroscopyUV–VisXPS analysisTransmission electron microscopy (TEM)Article