Abstract
0.5 mol% Pt decorated SnO 2 (Pt-SnO 2 ), 0.5 mol% Pd decorated SnO 2 (Pd-SnO 2 ), 0.5 mol% Pt decorated WO 3 (Pt-WO 3 ), and 0.5 mol% Pd decorated WO 3 (Pd-WO 3 ) gas sensing films were fabricated by screen printing. Subsequently, SiO2 membrane was deposited in situ by CVD. The response of the sensing films to CO, NO, H 2 , and NO 2 were investigated. Pt-SnO 2 , Pd-SnO 2 , and Pt-WO 3 with SiO2 membrane deposited for 20 min (Pt-WO 3 -SiO 2 ) and Pd-WO 3 showed highly sensitive and selective to CO, NO, H 2 , and NO 2 at each optimal operating temperature respectively. Different enhancements of response to target gases might be associated to the combined effects of electronic, chemical sensitizations, and “support effect”. The highly sensitive and selective gas sensors in this paper can be integrated into a gas sensor array to fabricate an electronic nose for H 2 , CO, NO, and NO 2 detection.
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.
