Utrera Martines, Marco Antoniodo Carmo, Devaney Ribeiro [UNESP]de Castro, Gustavo Rocha [UNESP]Caetano, Laercio [UNESP]2014-05-202014-05-202011-07-01Journal of Sol-gel Science and Technology. Dordrecht: Springer, v. 59, n. 1, p. 188-193, 2011.0928-0707http://hdl.handle.net/11449/10047This paper reports an electrochemical study of ordered mesoporous silica impregnated with a cationic dye (o-toluidine blue), prepared with a non-ionic surfactant as the structure-directing agent. O-toluidine blue was chosen because of its utility as an electron transfer mediator (redox catalyst). O-toluidine blue impregnated mesoporous silica was characterized by nitrogen sorption porosimetry, small angle X-ray scattering, infrared spectroscopy, scanning electron microscopy and cyclic voltammetry using chemically modified carbon paste electrodes. Results indicate that the dye is located within the ordered mesopores of micron-sized silica spheres.188-193engMesoporous silicao-toluidine blueModified carbon paste electrodeCycle voltammetryArtigo10.1007/s10971-011-2480-1WOS:000292569600025Acesso restrito0545046720519536