TY - JOUR
T1 - Photocatalytic oxidation of NOx using composite sheets containing TiO2 and a metal compound
AU - Ichiura, H.
AU - Kitaoka, T.
AU - Tanaka, H.
N1 - Funding Information:
This work was supported in part by a Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists, the R&D Foundation for Environmental Protection in Steel Industries, and a Grant-in-Aid for Scientific Research (13558075) from the Ministry of Education, Culture, Sports, Science and Technology, Japan. The authors are indebted to Mitsubishi Heavy Industries Ltd. for providing zeolite and ceramic fiber, to Nissan Chemical Co. for the alumina sol and to Ishihara Techno Co., for the TiO 2 . Dr. J. Anthony Bristow kindly made a linguistic revision of the manuscript.
PY - 2003/6
Y1 - 2003/6
N2 - The photocatalytic oxidation of nitrogen oxides (NOx) over titanium dioxide (TiO2) sheets containing metal compounds (MCs) had been studied. Calcium oxide (CaO), magnesium oxide (MgO), calcium carbonate (CaCO3), aluminium oxide (Al2O3) and ferric oxide (Fe2O3) were used as MCs. Al2O3 and Fe2O3 added to the TiO2 sheet did not affect the photooxidation of nitrogen oxides (NOx). The CaO sheet treated with TiO2 sol had the greatest efficiency as a NOx remover under UV irradiation. It is believed that CaO has a high adsorptivity for nitrogen dioxide (NO2) and nitric acid (HNO3). The amount of NOx removed by a TiO2 sheet including MC showed a tendency to increase with increasing pH of the MC suspension, i.e. there is a good correlation between the alkalinity of the MC and the retention of NO2 and HNO3.
AB - The photocatalytic oxidation of nitrogen oxides (NOx) over titanium dioxide (TiO2) sheets containing metal compounds (MCs) had been studied. Calcium oxide (CaO), magnesium oxide (MgO), calcium carbonate (CaCO3), aluminium oxide (Al2O3) and ferric oxide (Fe2O3) were used as MCs. Al2O3 and Fe2O3 added to the TiO2 sheet did not affect the photooxidation of nitrogen oxides (NOx). The CaO sheet treated with TiO2 sol had the greatest efficiency as a NOx remover under UV irradiation. It is believed that CaO has a high adsorptivity for nitrogen dioxide (NO2) and nitric acid (HNO3). The amount of NOx removed by a TiO2 sheet including MC showed a tendency to increase with increasing pH of the MC suspension, i.e. there is a good correlation between the alkalinity of the MC and the retention of NO2 and HNO3.
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U2 - 10.1016/S0045-6535(03)00049-3
DO - 10.1016/S0045-6535(03)00049-3
M3 - Article
C2 - 12697175
AN - SCOPUS:0037410579
SN - 0045-6535
VL - 51
SP - 855
EP - 860
JO - Chemosphere
JF - Chemosphere
IS - 9
ER -