Abstract
By using polyimide (PI) fabric as a flexible substrate, tin dioxide (SnO2)/reduced graphene oxide (rGO) composite coated fabrics (PI-SnO2/rGO) were prepared via electrostatic layer-by-layer self-assembly and in situ hydrothermal method. The morphology and microstructure of PI-SnO2/rGO were characterized by FT-IR, Raman, XPS and SEM, and its ammonia (NH3) sensing performance at room temperature was tested. The results show that the average size of SnO2 nanoparticles in the composite coating is about 3 nm, and there is a strong interfacial interaction between SnO2 and rGO. Consequently, PI-SnO2/rGO exhibits n-type sensing for NH3 with excellent linear response (R2 =0.995) in the range of 50–400 ppm, high sensitivity (5.16 % for 100 ppm NH3), fast response/recovery rate (94 s/57 s) and excellent selectivity. In addition, the sensor exhibits good mechanical robustness. The sensitivity is decreased by only 3 % after 2000 stretches.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
