Abstract
A highly sensitive and selective carbon monoxide sensor has been developed using LaFe0.8Co0.2O3 (LFCO) perovskite thin-film sensing element. A modified sol-gel approach was employed to develop the nanostructured thin film. Through proper utilization of the perovskite surface’s catalytic properties and the benefits of accessible microstructural control in a thin film sensing element, selective carbon monoxide sensing could be achieved. For 500 ppm CO, a response of ~ 87% with a response time of ~ 100 s has been reported at 225 °C. The LFCO sensor is selective to CO over a wide temperature range of 325–175 °C. High selectivity coefficients for carbon monoxide has been reported for H2 (κ ~ 4.53), C4H10 (κ ~ 6.62), CH4 (κ ~ 86.00) and NOx (κ ~ ∞) at 225 °C. The high selectivity to CO for LFCO sensor has been attributed to the low metal–oxygen binding energy, favorable d-orbital electronic configuration of the transition metal cations and the surface composition of the perovskite.
Sign-in/Register to access full text options 
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.
