Exploration of the different dimensions of wurtzite ZnO structure nanomaterials as gas sensors at room temperature

Ramike, Matshidiso P.; Ndungu, Patrick; Mamo, Messai A.

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Exploration of the different dimensions of wurtzite ZnO structure nanomaterials as gas sensors at room temperature

Ramike, Matshidiso P.; Ndungu, Patrick; Mamo, Messai A.

URI: http://hdl.handle.net/2263/98781

Date: 2023-10-23

Abstract:

Please read abstract in the article.

Description:

DATA 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].

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