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Abstract:

TiO 2 nanoparticles are synthesized in water/AOT/isooctane reverse micelles by hydrolysis of titanium (IV) n-butoxide. The molar ratios of the three components defines the size of nanoparticles as determined from the uv-visible absorption onset of the disperse system. Depending on the relative content of each component this sol undergoes a gel phase. The kinetics of sol-gel process is monitored for different Ti(BuO) 4 ./ water/AOT molar ratios, and as a function of temperature by static viscosity, and by the optical density of the system in the spectral range where light scattering is the dominant optical process. The water content of the system and the Ti(BuO) 4 /water molar ratio have great influence on the kinetics of the gelation process. An activation energy of (91 ± 9) kJmol -1 was obtained from Arrhenius plots.

Registro:

Documento: Artículo
Título:Titania sols and gels synthesized from reverse micelles
Autor:Ginzberg, B.; Bilmes, S.A.
Filiación:Departamento de Química, Facultad de Ingeniería, Universidad de Buenos Aires, Paseo Colón 850, 1043 Buenos Aires, Argentina
INQUIMAE, Depto. Quim. Inorg. Analitica y Q., Ciudad Universitaria Pab II, 1428 Buenos Aires, Argentina
Palabras clave:Gel; Nanoparticles; Reverse micelles; Sol-gel; Titanium dioxide
Año:1996
Volumen:102
Página de inicio:51
Página de fin:56
Título revista:Progress in Colloid and Polymer Science
Título revista abreviado:Prog Colloid Polym Sci
ISSN:0340255X
CODEN:PCPSD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0340255X_v102_n_p51_Ginzberg

Referencias:

  • Judin, V.P., (1993) Chemistry in Britain, p. 503
  • Samuneva, B., Kozhukarov, V., Trapalis, Ch., Kranols, R., (1993) J Mat Sci, 28, p. 2353
  • Honda, K., (1972) Nature, 238, p. 37
  • Memming, R., (1991) Photochemical Conversion and Storage of Solar Energy, p. 193. , Pelizzetti E, Schiavello M (eds) Kluwer (Holland)
  • Bahnemann, D.W., Cunningham, J., Fox, M.A., Pelizzetti, E., Pichat, P., Serpone, N., (1993) Aquatic and Surface Photochemistry, p. 261. , Helz GR. Zepp RG. Crosby DG (eds) Lewis Publ
  • Leguini, O., Oliveiros, E., Braun, A., (1993) Chem Rev, 93, p. 671
  • Papavassiliou, G., (1981) Solid State Chem, 40, p. 330
  • Henglein, A., (1988) Topics in Current Chemistry, 143, p. 113
  • Kamat, P., (1991) Kinetics and Catalysis in Microheterogeneous Systems, p. 375. , Grätzel M, Kalyansuaram K (eds) Marcel Dekker, USA
  • Chemela, D.S., Müller, D.A., (1985) J Opt Soc Am, B2, p. 1155
  • Brus, L., (1986) J Phys Chem, 90, p. 2555
  • Kormann, C., Bahnemann, D.W., Hoffmann, M.R., (1988) J Phys Chem, 92, p. 5196
  • Bahnemann, D., (1993) Israel J Chem, 33, p. 115
  • Micic, O.L., Rajh, T., Comor, M.I., Zec, S., Nedeljkovic, J.M., Patel, R.C., (1991) Mat Res Soc Symp Proc, 206, p. 127
  • Petit, C., Pileni, M.P., (1989) J Phys Chem, 92, p. 2282
  • Papoutsi, D., Lianos, P., Yianoulis, P., Koutsoukos, P., (1994) Lansmuir, 10, p. 1684
  • Joselevich, E., Willner, Y., (1994) J Phys Chem, 98, p. 7628
  • Smestad, G., Bignozzi, C., Argazzi, R., (1994) Solar Energy Mats and Solar Cells, 32, p. 259
  • Kim, D.H., Anderson, M.A., (1994) Env Sci and Technol, 28, p. 479
  • Brinker, C.J., Scherrer, G.W., (1989) Sol-gel Science, , Academic Press, USA
  • Sanchez, C., Ribot, F., (1994) New J Chem, 18, p. 1007
  • Zulauf, M., Eike, H.F., (1979) J Phys Chem, 83, p. 480
  • Pileni, M.P., (1993) J Phys Chem, 97, p. 6961
  • Keh, E., Valeur, B., (1981) J Coll Interface Sci, 79, p. 465
  • Schmidt, H.M., Weller, H., (1986) Chem Phys Lett, 129, p. 615
  • Hagfelt, A., Lunell, S., Siegbahn, H.O.G., (1994) Int J Quant Chem, 49, p. 97
  • Weller, H., Schmidt, H.M., Koch, U., Fojtik, A., Baral, S., Henglein, A., Kunath, W., Dieman, E., (1986) Chem Phys Lett, 124, p. 557
  • Bahnemann, D.W., Kormann, C., Hoffmann, M.R., (1987) J Phys Chem, 91, p. 3789
  • Parker, A., (1961) Phys Rev, 124, p. 1719
  • Bickley, R.I., (1978) Chem Phys of Solids and Their Surfaces, 7, p. 118
  • Colby, M.W., Osaka, A., Mackenzie, J.D., (1988) J Non-Cryst Solids, 99, p. 129
  • Hiemenz, P., (1977) Principles of Colloid and Surface Chemistry, , Marcel Dekker, USA
  • Rossetti, R., Hull, R., Gibson, J.M., Brus, L.E., (1985) J Chem Phys, 83, p. 1406

Citas:

---------- APA ----------
Ginzberg, B. & Bilmes, S.A. (1996) . Titania sols and gels synthesized from reverse micelles. Progress in Colloid and Polymer Science, 102, 51-56.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0340255X_v102_n_p51_Ginzberg [ ]
---------- CHICAGO ----------
Ginzberg, B., Bilmes, S.A. "Titania sols and gels synthesized from reverse micelles" . Progress in Colloid and Polymer Science 102 (1996) : 51-56.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0340255X_v102_n_p51_Ginzberg [ ]
---------- MLA ----------
Ginzberg, B., Bilmes, S.A. "Titania sols and gels synthesized from reverse micelles" . Progress in Colloid and Polymer Science, vol. 102, 1996, pp. 51-56.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0340255X_v102_n_p51_Ginzberg [ ]
---------- VANCOUVER ----------
Ginzberg, B., Bilmes, S.A. Titania sols and gels synthesized from reverse micelles. Prog Colloid Polym Sci. 1996;102:51-56.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0340255X_v102_n_p51_Ginzberg [ ]