Photocatalytic Activity of N-Doped TiO2 to Vehicle Exhaust in Road Tunnel
作者： T Wang , T Xu , None
DOI: 10.1520/JTE20170014
关键词: Photochemistry 、 Anatase 、 Ultraviolet 、 Photocatalysis 、 Visible spectrum 、 Doping 、 NOx 、 Titanium dioxide 、 Nanoparticle 、 Materials science
摘要: The nitrogen (N)-doped titanium dioxide (TiO2) was synthesized to use as raw materials of coating on the tunnel lining and pavement purify vehicle exhaust (VE) in a road tunnel. To study photocatalytic activity N-doped TiO2 VE, its morphology, surface area, optical properties were characterized. Then tests VE conducted under ultraviolet (UV) visible light irradiation, respectively. Results indicated that prepared showed spherical nanoparticles with grain size range 13–16 nm agglomeration decreased increase N-dopant concentration. Synthesized pure only contain an anatase phase. Also, exhibited higher absorptions UV region, absorption edges present obvious red shift. Additionally, than irradiation. degradation efficiencies NOx HC those CO2 CO irradiation because reversible reaction between CO. Furthermore, but not found. All reactions followed first-order kinetics VE. It is believed N doping promising method improve for air purification
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