Photocatalytic degradation properties of V-doped TiO 2 to automobile exhaust
To improve the photocatalytic degradation properties of titanium dioxide (TiO ) used as raw materials for purifying automobile exhaust (AE), the vanadium (V)-doped TiO samples were prepared. The photocatalytic degradation efficiencies of V-doped TiO to each component in AE were evaluated under ultra...
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Published in | The Science of the total environment Vol. 586; p. 347 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Netherlands
15.05.2017
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Abstract | To improve the photocatalytic degradation properties of titanium dioxide (TiO
) used as raw materials for purifying automobile exhaust (AE), the vanadium (V)-doped TiO
samples were prepared. The photocatalytic degradation efficiencies of V-doped TiO
to each component in AE were evaluated under ultraviolet (UV) and visible light irradiation, respectively. Results indicated that the photocatalytic activity of V-doped TiO
to AE was higher than that of pure TiO
, and the optimal V dopant content of TiO
was 1.0% under UV light irradiation. The degradation efficiencies of V-doped TiO
to NOx and HC were higher than those to CO
and CO in AE because of the reversible reaction between CO
and CO. In addition, it was found that the photocatalytic degradation efficiencies of V-doped TiO
to each component in AE were also increased under visible light irradiation. The V-doped TiO
also showed higher degradation efficiencies to NOx and HC than those to CO
and CO under visible light irradiation. The V doped TiO
presented higher photocatalytic activity to CO
than that to CO, but the reversible reaction between CO and CO
was not found under visible light irradiation. The photocatalytic reactions of pure and V-doped TiO
samples to each component in AE followed the first order kinetic pathway under the two light irradiations. It is concluded that the V doping is a feasible method to improve the photocatalytic degradation properties of TiO
to AE for air purification, developing a sustainable environmental purification technology based on TiO
materials. |
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AbstractList | To improve the photocatalytic degradation properties of titanium dioxide (TiO
) used as raw materials for purifying automobile exhaust (AE), the vanadium (V)-doped TiO
samples were prepared. The photocatalytic degradation efficiencies of V-doped TiO
to each component in AE were evaluated under ultraviolet (UV) and visible light irradiation, respectively. Results indicated that the photocatalytic activity of V-doped TiO
to AE was higher than that of pure TiO
, and the optimal V dopant content of TiO
was 1.0% under UV light irradiation. The degradation efficiencies of V-doped TiO
to NOx and HC were higher than those to CO
and CO in AE because of the reversible reaction between CO
and CO. In addition, it was found that the photocatalytic degradation efficiencies of V-doped TiO
to each component in AE were also increased under visible light irradiation. The V-doped TiO
also showed higher degradation efficiencies to NOx and HC than those to CO
and CO under visible light irradiation. The V doped TiO
presented higher photocatalytic activity to CO
than that to CO, but the reversible reaction between CO and CO
was not found under visible light irradiation. The photocatalytic reactions of pure and V-doped TiO
samples to each component in AE followed the first order kinetic pathway under the two light irradiations. It is concluded that the V doping is a feasible method to improve the photocatalytic degradation properties of TiO
to AE for air purification, developing a sustainable environmental purification technology based on TiO
materials. |
Author | Xu, Tao Shen, Dongya Wang, Tong Jiang, Ruiling |
Author_xml | – sequence: 1 givenname: Tong surname: Wang fullname: Wang, Tong organization: School of Civil Engineering, Nanjing Forestry University, 159, Longpan Road, Nanjing 210037, Jiangsu, China – sequence: 2 givenname: Dongya surname: Shen fullname: Shen, Dongya organization: School of Civil Engineering, Nanjing Forestry University, 159, Longpan Road, Nanjing 210037, Jiangsu, China – sequence: 3 givenname: Tao surname: Xu fullname: Xu, Tao email: seuxt@163.com organization: School of Civil Engineering, Nanjing Forestry University, 159, Longpan Road, Nanjing 210037, Jiangsu, China. Electronic address: seuxt@163.com – sequence: 4 givenname: Ruiling surname: Jiang fullname: Jiang, Ruiling organization: Jiangsu Modern Highway & Bridge Co. Ltd., 2, Xianlin Avenue, Nanjing 210046, Jiangsu, China |
BackLink | https://www.ncbi.nlm.nih.gov/pubmed/28187941$$D View this record in MEDLINE/PubMed |
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Keywords | Automobile exhaust Vanadium doping Visible light Titanium dioxide Photocatalytic degradation property |
Language | English |
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Title | Photocatalytic degradation properties of V-doped TiO 2 to automobile exhaust |
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