Abstracts Book - IMRC 2018

• SF5-P100
CIPROFLOXACIN TREATMENT BY PbMoO4 PHOTOCATALYSTS
SUPPORTED BY PHOTO-FENTON OXIDATION
Citlalli Alanis Moreno 1 , Diana Berenice Hernandez Uresti 2 , Daniel Sanchez Martinez 3
1 Instituto Tecnológico Superior de Ciudad Hidalgo, , Mexico. 2 Universidad Autónoma de Nuevo
León, CICFIM-Facultad de Ciencias Físico Matemáticas, Mexico. 3 Universidad Autónoma de
Nuevo León, Facultad de Ingeniería Civil, Departamento de Ecomateriales y Energía, Mexico.
Heterogeneous photocatalysis (HP) using UV-Vis/PbMoO 4 , photo-Fenton (PF)
reaction using UV-Vis/Fe/H 2 O 2 and the combination UV-Vis/PbMoO 4 /Fe/H 2 O 2
(HP–PF) were tested as processes to degrade ciprofloxacin (CIP). PbMoO 4 was
synthetized by simple ultrasound method and characterized by X-ray diffraction
(XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy
(DRS) and nitrogen adsorption (BET method). Optimization procedures helped
to determine the optimal quantity of H 2 O 2 and Fe +2 ions. The sample of PbMoO 4
with a small amount of Fe (3 wt. %) showed a considerably better behavior with
respect PbMoO 4 pure and the photocatalysts with higher Fe contents. A synergy
effect was demonstrated by simultaneous treatment of a solution of CIP with HP
and PF, giving an enhancement degradation of antibiotic and a large increase of
the apparent first-order rate constant. The proposed mechanism for the HP of
PbMoO 4 /Fe was further confirmed by oxidizing species role experiments. The
stability of PbMoO 4 /Fe was tested in four cycles of photodegradation process,
demonstrated that did not present photocorrosion.
Acknowledgment:
We wish to thank to the Universidad Autónoma de Nuevo León (UANL) and
CONACYT for supports the Project no. 220802
Keywords: Ciprofloxacin, Photo-Fenton, Photocatalysis
Presenting authors email: danney@hotmail.com