Artículos de revistas
Methylene Blue Immobilized In Cellulose/tio 2 And Sio 2/tio 2: Electrochemical Properties And Factorial Design [azul De Metileno Imobilizado Na Celulose/tio 2 E Sio 2/tio 2: Propriedades Eletroquímicas E Planejamento Fatorial]
Registro en:
Quimica Nova. , v. 29, n. 2, p. 208 - 212, 2006.
1004042
2-s2.0-33645682191
Autor
Scotti R.
Lima E.C.
Benvenutti E.V.
Piatnicki C.M.S.
Dias S.L.P.
Gushikem Y.
Kubota L.T.
Institución
Resumen
The electrochemical properties of methylene blue immobilized on cellulose/TiO 2 and mixed oxide SiO 2/TiO 2 matrices were investigated by means of cyclic voltammetry. The electron mediator property of the methylene blue was optimized using a factorial design, consisting of four factors in two levels. The experimental observations and data analyses on the system indicate that the lowest peak separation occurs for Sil/TiOAM, 1.0 mol L -1 KCl solution and 20 mV s -1 scan rate, while values of current ratio closest to unity were found for Cel/TiOAM independent of electrolyte concentration. 0.2 or 1.0 mol L -1, and scan rate, 20 mV s -1 or 60 mV s -1. 29 2 208 212 Dreser, H., (1885) Z. Biol., 21, p. 41 Ehrlich, P., (1886) Deut. Med. Wochschr, 12, p. 49 Clark, W.M., Cohen, B., Gibbs, H.D., (1925) Public Health Rept. (U.S.), 40, p. 1131 Tuite, E.M., Kelly, J.M., (1993) J. Photochem. Photobiol., B, 21, p. 103 Nicolai, S.H.A., (1998) Tese de Doutorado, , Universidade de São Paulo, Brasil Hay, D.W., Martin, S.A., Ray, S., Lichtin, N.N., (1981) J. Phys. Chem., 85, p. 1474 Ohno, T., Lichtin, N.N., (1980) J. Am. Chem. Soc., 102, p. 4636 Schiavo, D.A., Perez, E.F., Kubota, L.T., (2000) Quim. Nova, 23, p. 832 Pessoa, C.A., Gushikem, Y., Kubota, L.T., (1997) Electroanalysis, 9, p. 800 Ye, Y., Baldwin, R., (1988) Anal. Chem., 60, p. 2263 Lin, X.Q., Chen, J., Chen, Z.H., (2000) Electroanalysis, 12, p. 306 Gorton, L., (1995) Electroanalysis, 7, p. 23 Kalcher, K., Kauffmann, J.M., Wang, J., Svancara, I., Vytras, K., Neuhold, C., Yang, Z., (1994) Electroanalysis, 7, p. 5 Pessoa, C.A., Gushikem, Y., Kubota, L.T., Gorton, L., (1997) J. Electroanal. Chem., 431, p. 23 Rosatto, S.S., Kubota, L.T., Oliveira Neto, G., (1999) Anal. Chim. Acta, 390, p. 65 Walcarius, A., (1999) Anal. Chim. Acta, 384, p. 1 Sosa, R.C., Parton, R.F., Neys, P.E., Lardinois, O., Jacobs, P.A., Rouxhet, P.G., (1996) J. Mol. Catal. A: Chem., 110, p. 141 Ferreira, C.U., Gushikem, Y., Kubota, L.T., (2000) J. Solid State Electrochem., 4, p. 298 Gushikem, Y., Toledo, E.A.E., (1999) Polymer Interfaces and Emulsions, , Esumi, K., ed. Marcel Dekker Inc: New York, cap. 3 Borgo, C.A., Lazarin, A., Gushikem, Y., (2002) Sens. Actuators, B, 87, p. 498 Alemu, H., Chandrasvanshi, B.S., (1998) Electroanalysis, 10, p. 116 Castellani, A.M., Gushikem, Y., (2000) J. Colloid Interface Sci., 230, p. 195 De Barros Neto, B., Scarmínio, I.S., Bruns, R.E., (2001) Como Fazer Experimentos: Pesquisa e Desenvolvimento na Ciência e na Indústria, , Ed. da Unicamp: Campinas Box, G.E.P., Hunter, W.G., Hunter, J.S., (1978) Statistics for Experiments. An Introduction to Design, Data Analysis and Model Building, , Wiley: New York Liu, G., Wie, B.J.V., Leatzow, D., Weyrauch, B., Tiffany, T., (2000) Anal. Chim. Acta, 408, p. 21 Ensofi, A.A., Khayamian, T., Hemmateenejad, B., (1999) Anal. Lett., 32, p. 111 Rocha, R.F., Rosatto, S.S., Bruns, R.E., Kubota, L.T., (1997) J. Electroanal. Chem., 433, p. 73 Alfaya, A.S., Gushikem, Y., Castro, S.C., (1998) Chem. Mater., 10, p. 909 Dias, S.L.P., Gushikem, Y., Ribeiro, E.S., Benvenutti, E.V., (2002) J. Electroanal. Chem., 523, p. 64