Abstract
Indium doped 2-D mesoporous (TiO2/WO3) nanohybrids possessing large intrinsic surface area and ordered pore channels were synthesized using mesoporous silica, SBA-15 as hard template through a simple nanocasting strategy. The TiO2/WO3 was synthesized as a result of negative replica of SBA-15 template during nanocasting process, which was further modified with Indium nanoparticles using wet impregnation technique. The nanohybrids were tested against the detection of important indoor flammable organic pollutants including n-butanol, toluene, benzene, xylene, 2-propanol and ethyl acetate. The sensing results illustrate that 1wt% In-doped in TiO2/WO3 shows 2.65 times better response (R=127.2 @ 200°C) to 50ppm n-butanol gas than pure TiO2/WO3 (R=48 @ 210°C) nanocomposite at relatively lower operating temperature. A fast response time (2.2s), rapid recovery time (3s), linear response, high stability and excellent selectivity were observed for the developed nanohybrid sensor. It is expected that the promising findings reported in this study can be extended to synthesize ordered mesoporous nanostructures which will be useful for the design and construction of futuristic e-nose with enhanced gas-sensing performance.
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.
