Mechanism Reactions Of Photodegradation Of Organic Compounds Catalyzed By Tio2 [mecanismo De Fotodegradação De Compostos Orgânicos Catalisada Por Tio2]

Abstract

Conventional technology used in the treatment of wastewater has been pointed as a major environmental problem for sustainable development, since minimization is not addressed accordingly. Advanced oxidation processes (AOP), based on the formation of hydroxyl radical (.OH), a powerful oxidant agent, have been considered to be a potential technology for the destruction of many toxic compounds. Photocatalysis using solar light, an AOP, has been studied for nearly 20 years and recently attracted great interest as a clean-up technology. However, solar detoxification processes have not yet achieved commercial success. This article presents an overview of reaction mechanisms at the surface of semiconductors used as photocatalysts (specially TiO2), when heterogeneous photocatalysis is used to remove hazardous compounds from contaminated sites.213319325Childs, L.P., Ollis, D.F., (1981) J. Catal., 67, p. 35Frank, S.N., Bard, A.J., (1977) J. Phys. Chem., 81, p. 1484Izumi, I., Fan, F.R.F., Bard, A.J., (1981) J. Phys. Chem., 85, p. 218Reiche, H., Dunn, W.W., Bard, A., (1979) J. Phys. Chem., 83, p. 2248Serpone, N., Borgarello, E., Harris, R., Cahill, P., Borgarello, M., Pelizzetti, E., (1986) Sol. Energy Mater., 14, p. 121Pruden, A.L., Ollis, D.F., (1983) Environ. Sci. Technol., 17, p. 628Pruden, A.L., Ollis, D.F., (1983) J. Catal., 83, p. 404Bekbölet, M., Lindner, M., Weichgrebe, D., Bahnemann, D.W., (1996) Sol. Energy Mater., 56, p. 455Hidaka, H., Yamada, S., Suenaga, S., Kubota, H., Serpone, N., Pelizzetti, E., Grätzel, M., (1989) J. Photochem. Photobiol., 47, p. 103Hidaka, H., Zhao, J., (1992) Coll. Surf., 67, p. 165Hidaka, H., Zhao, J., Pelizzetti, E., Serpone, N., (1992) J. Phys. Chem., 96, p. 2226Davis, R.J., Gainer, J.L., O'Neal, G., Wu, I.-W., (1994) Wat. Environ. Res., 66, p. 50Hustert, K., Zepp, R.G., (1992) Chemosphere, 24, p. 335Pelizzetti, E., Minero, Carlim, M., Vincentin, M., Pramauro, E., Dolsi, M., (1992) Chemosphere, 24, p. 891Chen, L.-C., Chou, T.-C., (1993) Ind. Eng. Chem. Res., 32, p. 1520Matthews, R.W., (1991) Wat. Res., 25, p. 1169Huang, M., Tso, E., Datye, A.K., Prairie, M.R., Stange, B.M., (1996) Environ. Sci. Technol., 30, p. 3084Alberice, R.M., (1992), Dissertação de Mestrado. Campinas, UNICAMPZiolli, R.L., (1995), Tese de Doutorado em preparaçãoHoffmann, M.R., Choi, W., Bahnemann, D.W., (1995) Chem. Rev., 95, p. 69Turchi, C.S., Ollis, D.F., (1990) J. Catal., 122, p. 178Fox, M.A., Dulay, M.T., (1993) Chem. Rev., 93, p. 341Linsebigler, A.L., Lu, G., Yates Jr., J.T., (1995) Chem. Rev., 95, p. 735Bredow, T., Jug, K., (1995) J. Phys. Chem., 99, p. 285Bredow, T., Jug, K., (1995) Surf. Sci., 327, p. 398Mo, S.D., Ching, W.Y., (1995) Phys. Rev. B., 51, p. 13023Wong, J.C.S., Linsebigler, A.L., Lu, G., Fan, J., Yates Jr., J.T., (1995) J. Phys. Chem., 99, p. 335Lu, G., Linsebigler, A.L., Yates Jr., J.T., (1995) J. Chem. Phys., 102, p. 4657Goniakowski, J., Noguera, C., (1995) Surf. Sci., 330, p. 337Serpone, N., (1995) Sol. Energy Mater., 38, p. 369Sun, Y., Pignatello, J.J., (1995) Environ. Sci. Technol., 29, p. 2065Gerischer, H., (1995) Electrochim. Acta., 40, p. 1277Mao, Y., Schöneich, C., Asmus, K.D., (1991) J. Phys. Chem., 95, p. 10080Carraway, E.R., Hoffman, A.J., Hoffmann, M.R., (1994) Environ. Sci. Technol., 28, p. 786Draper, R.B., Fox, M.A., (1990) Langmuir, 6, p. 1396Pelizzetti, E., (1995) Sol. Energy Mater., 38, p. 453Barreto, R.D., Gray, K.A., Anders, K., (1995) Wat. Res., 29, p. 1243Riegel, G., Bolton, J.R., (1995) J. Phys. Chem., 99, p. 4215Anpo, M., Chiba, K., Tomonari, M., Coluccia, S., Che, M., Fox, M.A., (1991) Bull. Chem. Soc. Jpn., 64, p. 543Pichat, P., Guillard, C., Amalric, L., Renard, A.C., Plaidy, O., (1995) Sol. Energy Mater., 38, p. 391Richard, C., Boule, P., (1995) Sol. Energy Mater., 38, p. 431Lu, G., Linsebigler, A.L., Yates Jr., J.T., (1995) J. Phys. Chem., 99, p. 7626Schwitzgebel, J., Ekerdt, J.G., Gerischer, H., Heller, A., (1995) J. Phys. Chem., 99, p. 5633Stafford, U., Gray, K.A., Kamat, P.V., (1994) J. Phys. Chem., 98, p. 634

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