Abstract
Iron(III) doped specimens (0.01–5% atomic Fe ∶ Ti) have been prepared by impregnating polycrystalline “home prepared” TiO2 (mainly anatase) and have been studied for photocatalytic degradation of 4-nitrophenol in aqueous dispersions. Some structural and surface properties have been studied by X-ray diffraction, specific surface area and porosity measurements and FTIR monitoring of pyridine, ammonia and methanoic acid adsorption for surface acidity and basicity. Their surface properties were compared with a corresponding series of photocatalysts prepared by a coprecipitation method. Adsorption of pyridine and ammonia indicates the presence of surface acid Lewis sites, a low concentration of surface Brønsted sites being present only in the samples prepared by impregnation. The photocatalytic experiments indicated that the presence of iron ions does not influence or is detrimental for the occurrence of the 4-nitrophenol photodegradation.
Similar content being viewed by others
References
R.I. Bickley, T. Gonzalez-Carreno and L. Palmisano, Mater. Chem. Phys. 29 (1991) 475.
R.I. Bickley, J.S. Lees, J.D. Tilley, L. Palmisano and M. Schiavello, J. Chem. Soc. Faraday Trans. 88 (1992) 377, and references therein.
J.A. Navio, M. Macias, M. Gonzalez-Catalan and A. Justo, J. Mater. Sci. 27 (1992) 3036.
A.B. Rives, T.S. Kulkarni and A.L. Schwaner, Langmuir 9 (1993) 192.
R.I. Bickley, T. Gonzalez-Carreno, A.R. Gonzalez-Elipé, G. Munuera and L. Palmisano, in preparation.
N. Schrauzer and T.D. Guth, J. Am. Chem. Soc. 99 (1977) 7189.
V. Augugliaro, A. Lauricella, L. Rizzuti, M. Schiavello and A. Sclafani, Int. J. Hydrogen Energy 7 (1982) 845.
V. Augugliaro, F. D'Alba, L. Rizzuti, M. Schiavello and A. Sclafani, Int. J. Hydrogen Energy 7 (1982) 851.
K. Tennakone, S. Wickramanayake, C.A.N. Fernando, O.A. Ileperuma and S. Punchihewa, J. Chem. Soc. Chem. Commun. (1987) 1078.
L. Palmisano, V. Augugliaro, A. Sclafani and M. Schiavello, J. Phys. Chem. 92 (1988) 6710.
J. Soria, J.C. Conesa, V. Augugliaro, L. Palmisano, M. Schiavello and A. Sclafani, J. Phys. Chem. 95 (1991) 274, andreferences therein.
S. Lowell,Introduction to Powder Surface Area (Wiley, New York, 1979).
V. Augugliaro, L. Palmisano, A. Sclafani, C. Minero and E. Pelizzetti, Toxicol. Environ. Chem. 16 (1988) 89.
V. Augugliaro, E. Davi, L. Palmisano, M. Schiavello and A. Sclafani, Appl. Catal. 65 (1990) 101.
B.C. Lippens and J.H. de Boer, J. Catal. 4 (1948) 319.
L.H. Cohan, J. Am. Chem. Soc. 60 (1938) 433.
H. Knözinger, Adv. Catal. 25 (1976) 184.
H.A. Benesi and B.H.C. Winquist, Adv. Catal. 27 (1978) 97.
C. Martin, I. Martin, V. Rives, L. Palmisano and M. Schiavello, J. Catal. 134 (1992) 434.
A.M. Venezia, L. Palmisano, M. Schiavello, C. Martin, I. Martin and V. Rives, submitted.
A.A. Davydov, in:Infrared Spectroscopy of Adsorbed Species on the Surface of Metal Oxides, ed. C.H. Rochester (Wiley, Chichester, 1990).
N.W. Alcock, V.M. Tracy and T.C. Waddington, J. Chem. Soc. Dalton Trans. (1976) 2243.
T.A. Stephenson, S.M. Morehouse, A.R. Powell, J.P. Heffer and G. Wilkinson, J. Chem. Soc. (1965) 3632.
M. Primet, P. Pichat and M.V. Mathieu, J. Phys. Chem. 75 (1971) 1216.
A. Sclafani, L. Palmisano and E. Davi, New J. Chem. 14 (1990) 265.
H.P. Maruska and A.K. Ghosh, Solar Energy Mater. 1 (1979) 237.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Palmisano, L., Schiavello, M., Sclafani, A. et al. Surface properties of iron-titania photocatalysts employed for 4-nitrophenol photodegradation in aqueous TiO2 dispersion. Catal Lett 24, 303–315 (1994). https://doi.org/10.1007/BF00811803
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00811803