Nanometer-Thick ZnO/SnO₂ Heterostructures Grown on Alumina for H₂S Sensing.

ABSTRACT: Designing heterostructure materials at the nanoscale is a well-known method to enhance gas sensing performance. In this study, a mixed solution of zinc chloride and tin (II) chloride dihydrate, dissolved in ethanol solvent, was used as the initial precursor for depositing the sensing layer on alumina substrates using the ultrasonic spray pyrolysis (USP) method. Several ZnO/SnO₂ heterostructures were grown by applying different ratios in the initial precursors. These heterostructures were used as active materials for the sensing of H₂S gas molecules. The results revealed that an increase in the zinc chloride in the USP precursor alters the H₂S sensitivity of the sensor. The optimal working temperature was found to be 450 °C. The sensor, containing 5:1 (ZnCl<

SUBMITTER: Akbari-Saatlu M 

PROVIDER: S-EPMC9152767 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature