TY - JOUR
T1 - Photocatalytic degradation of metoprolol in aqueous medium using a TiO2/natural zeolite composite
AU - Piedra López, Jessica Guadalupe
AU - González Pichardo, Orlando Haciel
AU - Pinedo Escobar, José Alfonso
AU - de Haro del Río, David Alejandro
AU - Inchaurregui Méndez, Horacio
AU - González Rodríguez, Luis Mario
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/1/15
Y1 - 2021/1/15
N2 - Photodegradation of metoprolol using a TiO2 and Mexican natural zeolite composite (T/MZ) was studied. The photocatalyst was successfully synthesized by physical mixing method where commercial TiO2 Degusa P25 was supported on thermochemical modified clinoptilolite. X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy confirmed the TiO2 incorporation over the clinoptilolite surface without structural changes of the zeolite. Point of zero charge of 6.2 was found for the T/MZ, while the bandgap energy of 3.15 eV was obtained by UV–Vis diffuse reflectance spectroscopy. Photodegradation tests of metoprolol as a model emerging pollutant were carried out, finding that the T/MZ composite to have superior degradation percentages thant the commercial TiO2 P25 for all the pH values tested (3–9), which demonstrates a synergistic effect between the semiconductor material and the zeolitic support. Finally, it was found that the kinetics degradation of metoprolol follows the Langmuir, Hinshelwood, Hougen and Watson (LHHW) model.
AB - Photodegradation of metoprolol using a TiO2 and Mexican natural zeolite composite (T/MZ) was studied. The photocatalyst was successfully synthesized by physical mixing method where commercial TiO2 Degusa P25 was supported on thermochemical modified clinoptilolite. X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy confirmed the TiO2 incorporation over the clinoptilolite surface without structural changes of the zeolite. Point of zero charge of 6.2 was found for the T/MZ, while the bandgap energy of 3.15 eV was obtained by UV–Vis diffuse reflectance spectroscopy. Photodegradation tests of metoprolol as a model emerging pollutant were carried out, finding that the T/MZ composite to have superior degradation percentages thant the commercial TiO2 P25 for all the pH values tested (3–9), which demonstrates a synergistic effect between the semiconductor material and the zeolitic support. Finally, it was found that the kinetics degradation of metoprolol follows the Langmuir, Hinshelwood, Hougen and Watson (LHHW) model.
KW - Emerging pollutants
KW - Metoprolol
KW - Photodegradation
KW - TiO
KW - Zeolitic support
UR - http://www.scopus.com/inward/record.url?scp=85090590146&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2020.119030
DO - 10.1016/j.fuel.2020.119030
M3 - Artículo
AN - SCOPUS:85090590146
SN - 0016-2361
VL - 284
JO - Fuel
JF - Fuel
M1 - 119030
ER -