Abstract
The complete photocatalytic oxidation of C2H4 with O2 into CO2 and H2O has been achieved on ultrafine powdered TiO2 photocatalysts and the addition of H2O was found to enhance the reaction. The photocatalytic reaction has been studied by IR, ESR, and analysis of the reaction products. UV irradiation of the photocatalysts at 275 K led to the photocatalytic oxidation of C2H4 with O2 into CO2, CO, and H2O. The large surface area of the photocatalyst is one of the most important factors in achieving a high efficiency in the photocatalytic oxidation of C2H4. The photoformed OH species as well as O −2 and O −3 anion radicals play a significant role as a key active species in the complete photocatalytic oxidation of C2H4 with O2 into CO2 and H2O. Interestingly, small amount of Pt addition to the TiO2 photocatalyst increased the amount of selective formation of CO2 which was the oxidation product of C2H4 and O2.
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References
Anpo, M., “Photocatalysis on Small Particle TiO2 Catalysts: Reaction Intermediates and Reaction Mechanisms”,Res. Chem. Intermed.,9, 67 (1989).
Anpo, M., Chiba, K., Tomonari, M., Coluccia, S., Che, M. and Fox, M. A., “Photocatalysis on Native and Platinum-Loaded TiO2 and ZnO Catalysts-Origin of Different Reactivities on Wet and Dry Metal Oxides”,Bull. Chem. Soc. Jpn.,64, 543 (1991).
Anpo, M., “Photocatalysis on Titanium Oxide Catalysts: Approaches in Achieving Highly Efficient Reaction and Realizing the Use of Visible Light”,Catal. Surv. Jpn.,1, 169 (1997).
Anpo, M. and Yamashita, H.,in “Heterogeneous Photocatalysis”, M. Schiavelo, Ed., Wiley, Chichester, 133 (1997).
Anpo, M., Yamashita, H., Ichihashi, Y., Fujii, Y. and Honda, M., “Photocatalytic Reduction of CO2 with H2O on Titanium Oxides Anchored within Micropores of Zeolites: Effects of the Structure of the Active Sites and the Addition of Pt”,J. Phys. Chem.,101, 2632 (1997).
Chai, Y. S., Lee, J. C. and Kim, B. Y., “Photocatalytic Disinfection ofE. coli in a Suspended TiO2/UV Reactor”,Korean J. Chem. Eng.,17, 633 (2000).
Fox, M. A. and Dulay, M. T., “Heterogeneous Photocatalysis”,Chem. Rev.,93, 341 (1993).
Graf, J. C., “Photocatalytic Oxidation of Volatile Organic Contaminants”, 5th ICES SAE 951660 (1995).
Meagher, J. M. and Heicklen, J., “Reaction of HO with C2H4”,J. Phys. Chem.,80(15), 1645 (1976).
Kamat, P. V., “Photochemistry on Nonreactive and Reactive (Semiconductor) Surfaces”,Chem. Rev.,93, 267 (1993).
Kubokawa, Y., Anpo, M. and Yun, C.,in “Proceedings, 7th International Congress on Catalysis, Tokyo, 1980”, Part B, Elsevier, Amsterdam, 1170 (1981).
Lee, S. G. and Lee, H. I., “A New Active Sulfur-Sensitive Bismuth Oxide on Titania for Photocatalyst”,Korean J. Chem. Eng.,15, 463 (1998).
Ollis, D. F. and Al-Ekabi, H., “Photocatalytic Purification and Treatment of Water and Air”, Elsevier, Amsterdam (1993).
Yamashita, H., Kawasaki, S., Ichihashi, Y., Takeuchi, M., Harada, M., Anpo, M., Louis, C. and Che, M., “Characterization of Ti/Si Binary Oxides Prepared by the Sol-Gel Method and Their Photocatalytic Properties: The Hydrogen and Hydrogenolysis of CH3CCH with H2O”,Korean J. Chem. Eng.,15, 491 (1998).
Yamashita, H., Ichihashi, Y., Harada, M., Stewart, G., Fox, M. A. and Anpo, M., “Photocatalytic Degradation of 1-Octanol on Anchored Titanium Oxide and on TiO2 Powder Catalysts”,J. Catal.,158, 97 (1996).
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Park, DR., Ahn, BJ., Park, HS. et al. Photocatalytic oxidation of ethylene to CO2 and H2O on ultrafine powdered TiO2 photocatalysts: Effect of the presence of O2 and H2O and the addition of Pt. Korean J. Chem. Eng. 18, 930–934 (2001). https://doi.org/10.1007/BF02705621
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DOI: https://doi.org/10.1007/BF02705621