Experimental Study on Nanometer TiO2 Doped with Fe3+ for Purification Effect of Automobile Exhaust in the Tunnel

This paper presents an experimental approach to study purification effect of automobile exhaust. Sol-gel method was used to prepare Fe3+ modified Titanium dioxide (TiO2). Purification tests were conducted in a self-developed instrument to study catalytic effects of TiO2 doped with different contents of Fe3+ through degradation rate. The modification mechanism was studied by X-ray diffraction (XRD) scanning. Results showed that doping iron ion had improved the light catalytic performance of nanometer through inhibiting the growth of TiO2 grain size. TiO2 doped with 0.1% iron ion showed the best catalytic effect. The degradation rates of CO and CO2, HC and NOX were 6.9%, 7.9%, 2.3% and 14.9% higher than the unmodified TiO2 under ultraviolet light conditions, respectively; 0.6%, 0.6%, 2.3% and 8.2% higher than the unmodified under incandescent light conditions, respectively.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AF000(2) Pavement Materials and the Urban Climate.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Pie, Jianzhong
  • Du, Hongzhao
  • Li, Yanwei
  • Ma, Fengxu
  • Du, Qunle
  • Shi, Xin
• Conference:
  • Transportation Research Board 92nd Annual Meeting
  • Location: Washington DC, United States
  • Date: 2013-1-13 to 2013-1-17
• Date: 2013

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References;
• Pagination: 12p
• Monograph Title: TRB 92nd Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Air quality management; Emission control devices; Exhaust gases; Oxidation catalysts; Purification; Tunnels
• Uncontrolled Terms: Photocatalysts
• Subject Areas: Environment; Highways; Vehicles and Equipment; I15: Environment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01478928
• Record Type: Publication
• Report/Paper Numbers: 13-2563
• Files: TRIS, TRB, ATRI
• Created Date: Apr 19 2013 4:54PM