Abstract
Partially reduced SnO2 was prepared by using NaBH4 as reducer under room temperature. After NaBH4 treatment, the oxygen vacancy density of SnO2 was increased greatly. X-ray photoelectron spectroscopy, photoluminescence and electron paramagnetic resonance indicates that the obtained materials are characteristic of a high concentration of oxygen vacancies. Owing to increased oxygen vacancy concentration, these materials showed significantly high gas-sensing response to ethanol. Compared with the ethanol-sensing response value of 36.9 for pristine SnO2 towards 300 ppm ethanol, the response value for the partially reduced SnO2 is 120.3. This ethanol-sensing response enhancement may be attributed to the fact that the increased surface oxygen vacancy facilitates oxygen adsorption, and promotes chemical reaction on the surface.
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.
