Abstract
In order to gain an understanding of the role of oxygen vacancy in enhancing gaseous formaldehyde oxidation, mesoporous NaInO2 compounds were synthesized with different amount of oxygen vacancies while maintaining similar BET surface area. The NaInO2 compounds were designed as the support for platinum (Pt) nanoparticles loaded catalytic oxidation, exhibiting the best performance with a formaldehyde degradation ratio of 96.11%. Interfacial lattice mismatch was considered as the cause of oxygen vacancies and simulated by density functional theory (DFT). Special bridged bidentate species were observed in Pt/NaInO2 with oxygen vacancies during HCHO oxidation using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). Based on our observations we propose, for the first time, that superoxide (O2−) is the effective species that oxidizes formaldehyde, while oxygen vacancies provide pathways to transport O2− from Pt nanoparticles to support surface thus offering more active sites for the reaction to take place.
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.
