Resumen

RODRIGUES, Emanuel C. et al. Synthesis and characterization of Fe(III)-doped ceramic membranes of titanium dioxide and its application in photoelectrocatalysis of a textile dye. Eclet. Quím. [online]. 2011, vol.36, n.1, pp. 18-36. ISSN 0100-4670.  http://dx.doi.org/10.1590/S0100-46702011000100002.

Pure and Fe(III)-doped TiO₂ suspensions were prepared by the sol gel method with the use of titanium isopropoxide (Ti(OPri)₄) as precursor material. The properties of doped materials were compared to TiO₂ properties based on the characterization by thermal analysis (TG-DTA and DSC), X-ray powder diffractometry and spectroscopy measurements (FTIR). Both undoped and doped TiO₂ suspensions were used to coat metallic substrate as a mean to make thin-film electrodes. Thermal treatment of the precursors at 400ºC for 2 h in air resulted in the formation of nanocrystalline anatase TiO₂. The thin-film electrodes were tested with respect to their photocatalytic performance for degradation of a textile dye in aqueous solution. The plain TiO₂ remains as the best catalyst at the conditions used in this report.

Palabras llave : TiO₂; Fe(III) doping; characterization; thin film electrode; textile dye.