Abstract
Titanium dioxide ( TiO 2) nanoparticles were prepared by resistive heating Ti filament under an oxygen atmosphere. The obtained nanoparticles were confirmed to be a tetragonal crystal TiO 2 and the particle size increased with increasing the oxygen pressure. The NO 2 gas sensing properties of the TiO 2 nanoparticles were investigated. All the sensors made of TiO 2 nanoparticles with different particle sizes exhibited the maximum sensitivities to 1 ppm NO 2 at a relative low operating temperature of 150°C. Comparing with the large particle size of TiO 2 nanoparticles, the ones with the smallest particle size exhibited the highest sensitivity and the best response and recovery characteristic to various NO 2 gas concentrations.
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.
