Abstracts Book - IMRC 2018

• SF5-P026
DETERMINATION OF THE TiO2(B) PHASE IN Ce/TiO2, La/TiO2 AND
Fe/TiO2 NANOPOWDERS AND THEIR EFFECT IN PHOTOCATALYTIC
PERFORMANCE ON THE DEGRADATION OF 4-CP AND P-CRESOL
Amauri Alberto Rincon Lopez 1 , Mariana Giselle Hernandez Jimenez 1 , David Salvador Garcia
Zaleta 1 , Jorge Galaviz Pérez 1 , Rosa del Rosario Collado Torres 1 , Silvia Beatriz Brachetti Sibaja 2 ,
Aide Torres 3 , Miguel Antonio Domínguez Crespo 3
1 Universidad Juárez Autónoma de Tabasco, División Académica Multidisciplinaria de Jalpa de
Méndez, Mexico. 2 Instituto Tecnológico de Ciudad Madero, Depto. de Ing. Química y
Bioquímica, Mexico. 3 Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada,
Unidad Altamira, IPN, CICATA-IPN, Mexico.
It is known that TiO 2 is one of the most used semiconductors in photocatalysis
and its properties depend of crystal structures (anatase, rutile, brookite, and
TiO 2 (β)) that combining them could achieve synergic effects. Its main drawback
is the band gap of 3.2 eV that avoids the use of sunlight. In this research were
synthesized TiO 2 , Fe-TiO 2 , Ce-TiO 2 and La-TiO 2 compounds at different
concentrations (0.5, 1.0 and 1.5 mol-%) and thermal treatments at 425, 475 and
525 °C. The nanopowders were characterized by X-Ray Diffraction to determine
the TiO 2 phases in the specimens. The characteristic peaks of the anatase and
rutile phases were detected in the compounds. In addition, some extra peaks
appeared at 15° and 26° in 2θ indicating the formation of the TiO 2 (β). It is
important to mention that is difficult to detect this phase due the overlapped of
the reflections with the anatase and rutile phase, however, it was confirmed by
Rietveld refinement results. TEM micrographs showed the crystal sizes in order
of nanometers (
Acknowledgment:
Authors wish to thank the PRODEP program for the support of this presentation
(UJAT-PTC-260).
Keywords: TiO2(B), Mix of phases, Nanopowders
Presenting authors email: amauri-rincon.l@outlook.com