Hidrogeneoftalato de potássio como molécula modelo para estudos de adsorção sobre TiO2
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Abstract
Este trabalho teve por objetivo utilizar o hidrogenoftalato de potássio como molécula modelo para estudos de adsorção em TiO2. Os resultados de adsorção do hidrogeneoftalato sobre TiO2 se ajustaram aos modelos de adsorção propostos por Langmuir e Freundlich, sendo que o modelo de Freundlich descreveu melhor o fenômeno. A adsorção foi função da temperatura e a capacidade de adsorção aumentou de 2,4 para 4,5 mg.g-1 quando se elevou a temperatura de 20 para 30ºC.
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References
DIONYSIOU, D.D.; KHODADOUST, A.P.; KERN, A.M.; SUIDAN, M.T.; BUDIN, I.; LAÎNÉ, J-M. Continuos-mode photocatalytic degradation of chlorinated phenols and pesticides in water using a bench-scale TiO2 rotating disk reactor. App. Catal., v.24, p.139-155, 2000. [ Links ]
HERRMANN, Jean-Marie. Heterogeneous photocatalysis: fundamentals and applications to the removal of various types of aqueous pollutants. Catal. Today, v.53, p.115-129, 1999. [ Links ]
LINSEBIGLER, A.L.; GUANGQUAN, LU; YATES Jr., J.T. Photocatalysis on TiO2 surfaces: principles, mechanisms, and selected results. Chem. Rev., v.95, p.735-758, 1995. [ Links ]
MILLS, A.; HUNTE, S. L. An overview of semicondutor photocatalysis. Photochem. Photobiol. A, v.108, p.1-35, 1997. [ Links ]
NOGUEIRA, R.F.P.; JARDIM, W. A fotocatálise heterogênea e sua aplicação ambiental. Quím. Nova, v.21, p.69-72, 1998 [ Links ]
RAND, M. C.; GREEMBERG, A.G.;TARAJ, M.J.(Eds). Standard methods for examination of water and wastewater. 20.ed. Washington: American Public Heath Association. American Water Works Association and Water Pollution Control Federation. 1998. [ Links ]
ROBERT, D.; PARRA, S.; PULGARIN, C.; KRZTON, A.; WEBER, J.V. Chemisorption of phenols and acids on TiO2 surface. App. Surf. Sc., v.167, p.51-58, 2000. [ Links ]
RODRIGUEZ. S.M.; RICHTER, C.; GÁLVEZ, J.B.; VINCENT, M. Phtocatalytic degradation of industrial residual waters. Solar Energy, v.56, p.401-410, 1996. [ Links ]
SHIMADZU CORPORATION, TOC-VCPH/CPN Total Organic Carbon Analyzer. Users Manual, 2001.
SODRÉ, F. F.; LENZI, E. Utilização de modelos físicos-químicos de adsorção no estudo do comportamento do cobre em solos argilosos. Quím. Nova, v.24, p.324-330, 2001. [ Links ]
TUNESI, S.; ANDERSON, M.A. Surface effects in photochemistry: an in situ cylindrical internal reflection-fourier transform infrared investigation of the effect of ring substituents on chemisorption onto TiO2 ceramic membranes. Langmuir, v.8, p.487-495, 1992. [ Links ]
ZIOLLI, R. L.; JARDIM, W. Mecanismo de Fotodegradação de compostos orgânicos catalisada por TiO2. Quím. Nova, v.21, p.319-325, 1998. [ Links ]