Chemiresistive ethanol sensors based on In2O3/ZnSnO3 nanocubes

• Published in: Sensors and actuators reports Vol. 4; p. 100099
• Main Authors: Yan, Shu, Zhang, Shu-Zhe, Xie, Wan-Feng, Gai, Ling-Yun, Yuan, Hui-Min, Zhang, Ding, Zhang, He, Liu, Xuhai, Yang, Woochul, Chi, Zong-Tao
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2022; Elsevier
• Subjects: ethanol; gas sensing; hydrothermal method; In2O3/ZnSnO3; nanocubes; nanocubes; gas sensing; In2O3/ZnSnO3; ethanol; hydrothermal method
• ISSN: 2666-0539; 2666-0539
• DOI: 10.1016/j.snr.2022.100099

•In2O3/ZnSnO3 cubic crystallite composites were successfully synthesized by combining hydrothermal and calcination processes.•The In(9%)/ZnSnO3 exhibits excellent sensing performances that is the response is 14.9, and response/recovery times are 45 s and 24 s, respectively, to 100 ppm ethanol at 250 °C.•The good sensing performances can be attributed to the synergetic effect between In2O3 and ZnSnO3, oxygen vacancies, and high specific surface area. By combining hydrothermal and calcination processes, In2O3/ZnSnO3 cubic crystallite composites have been successfully synthesized. The crystal structure and morphology of the as-synthesized In2O3/ZnSnO3 have been characterized employing X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and X-Ray photoelectron spectroscopy (XPS). In terms of better gas response, fast response, repeatability, and a lower operating temperature, the In2O3/ZnSnO3 cubic crystallites displayed selective sensing performance towards ethanol, specifically, the response is 14.9, and response/recovery times are 45 s and 24 s, respectively, to 100 ppm ethanol at 250 °C. This research reveals that the synthetic In2O3/ZnSnO3 cubic crystallite composites exhibit significant ethanol sensing properties due to the synergetic effect between In2O3 and ZnSnO3, oxygen vacancies, and high specific surface area, making them a potential material for constructing high-performance ethanol sensors. [Display omitted] .