Abstracts Book - IMRC 2018

• SF5-P096
PHOTOSENSITIZING EVALUATION OF THE NANOSTRUCTURED
SEMICONDUCTOR TIO2
Lizeth Martínez Cruz 1 , Susana Nohemi Ventura Romero 2 , Victor Hugo Castrejon Sanchez 1 , Ma.
Angeles Enríquez Pérez 1
1 Tecnológico de Estudios Superiores de Jocotitlán, Materials engineering, Mexico. 2 Tecnológico
de Estudios Superiores de Jocotitlán, Meterials Engineering, Mexico.
Faced with the need to preserve the environment, methods have been sought
to eliminate chemical contaminants. Among the options for wastewater
treatment is heterogeneous photocatalysis; which needs a catalyst and light, in
order to accelerate or reach a chemical reaction. Among the catalysts that have
aroused interest are the nanostructured materials, including TiO 2 which has
three important crystalline phases, rutile (simple tetragonal), anatase
(tetragonal centered in the body) and brookite (orthorhombic structure). Other
researchers have focused their efforts on trying to improve the absorption of
visible light by TiO 2 , which has been achieved by inducing the mixture of
anatase/rutile phase when the material is in bulk, in this work the
photosensitizing capacity of the semiconductor was evaluated. nanostructured
TiO 2 synthesized by the sol gel method in its different proportions of anataserutile
phases, using a commercial dye. The parameters analyzed were: the
concentration of dye, the time of sensitization of the semiconductor, the amount
of moles of adsorbed dye, nanostructures (Anatase-Rutile %). Solutions of
methylene blue were prepared with concentrations of 8, 6 and 5 ppm, the
nanoparticles were sonified for 30 min, preparing two samples; with and
without
Acknowledgment:
authors would like to thanks to TESJo for supporting this project
Keywords: photocatalysis, TiO2, sol gel method
Presenting authors email: lizeth.martinez.cruz@hotmail.com