TY - JOUR
T1 - Sonochemical coupled synthesis of Cr-TiO2 supported on Fe3O4 structures and chemical simulation of the degradation mechanism of Malachite Green dye
AU - de Santiago Colín, Diego Manuel
AU - Martínez-Chávez, L. A.
AU - Cuán, Ángeles
AU - Elizalde-Peña, Eduardo A.
AU - Rivera, Josefina Alvarado
AU - Guzmán, C.
AU - Escobar-Alarcón, L.
AU - Esquivel, K.
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/9/1
Y1 - 2018/9/1
N2 - Cr-TiO2 supported on Fe3O4 material was synthesized using a sonochemical method. By TEM images it was possible to observe cubic morphologies and by XRD and Raman spectroscopy the anatase phase was evaluated, showing that no subsequent thermal treatment was necessary. XPS analysis shows a decrease in the intensity of the Fe3O4 signals when the TiO2 is added to create the material discussed in this paper. Also, by this technique, it was possible to confirm the presence of Cr over the doped materials. In the photocatalysis test. 100% of color removal of the Malachite Green dye (10 mg L−1) was achieved after 300 min of reaction time under solar radiation in a cylindrical reactor with constant bubbling, and only 60% of TOC removal was reached. Using the Time Dependent – Density Functional Theory (TD-DFT) model, was possible to predict the by-products of the photocatalytic reaction of the Malachite Green dye, such as the leuco carbinol Malachite Green, 4-(dimethylamino) benzophenone and 4-[[4-(dimethylamino) phenyl] methyl]-N,N-dimethylaniline Malachite and it its compared with the experimental UV–vis spectra.
AB - Cr-TiO2 supported on Fe3O4 material was synthesized using a sonochemical method. By TEM images it was possible to observe cubic morphologies and by XRD and Raman spectroscopy the anatase phase was evaluated, showing that no subsequent thermal treatment was necessary. XPS analysis shows a decrease in the intensity of the Fe3O4 signals when the TiO2 is added to create the material discussed in this paper. Also, by this technique, it was possible to confirm the presence of Cr over the doped materials. In the photocatalysis test. 100% of color removal of the Malachite Green dye (10 mg L−1) was achieved after 300 min of reaction time under solar radiation in a cylindrical reactor with constant bubbling, and only 60% of TOC removal was reached. Using the Time Dependent – Density Functional Theory (TD-DFT) model, was possible to predict the by-products of the photocatalytic reaction of the Malachite Green dye, such as the leuco carbinol Malachite Green, 4-(dimethylamino) benzophenone and 4-[[4-(dimethylamino) phenyl] methyl]-N,N-dimethylaniline Malachite and it its compared with the experimental UV–vis spectra.
KW - Catalyst supported
KW - Dyes
KW - Solar photocatalysis
KW - Wastewater
UR - http://www.scopus.com/inward/record.url?scp=85048417131&partnerID=8YFLogxK
U2 - 10.1016/j.jphotochem.2018.06.004
DO - 10.1016/j.jphotochem.2018.06.004
M3 - Artículo
SN - 1010-6030
VL - 364
SP - 250
EP - 261
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
ER -