TY - JOUR
T1 - Commercial aluminum oxides with different crystalline structures efficient for the mineralization of phenolic pollutants
AU - Piña-Pérez, Yanet
AU - Aguilar-Martínez, Octavio
AU - Oros-Ruíz, Socorro
AU - Gómez, Ricardo
AU - Tzompantzi, Francisco
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/2/15
Y1 - 2018/2/15
N2 - There are several polymorphs of aluminum oxide, therefore, commercial aluminum oxides with different crystalline structures were selected to perform photocatalytic tests; boehmite, gamma, and alpha alumina polymorphs were chosen to analyze its photocatalytic activity for the mineralization of phenol and 4-chlorophenol using UV light. All the materials were characterized by X-ray diffraction, N2 physisorption, UV–vis diffuse reflectance spectroscopy, infrared spectroscopy, and nuclear magnetic resonance. Also, the type of photoinduced reactive species responsible to carry out the mineralization process, were evaluated, finding that the O2[rad]− radicals are determinants for the photocatalytic process. The reaction mechanism involving the sensitization of the phenolic pollutant on the surface of Al2O3 for its mineralization is proposed. Although Al2O3 is an insulator, in the present work, it is proved to be an efficient material for the mineralization of phenolic pollutants.
AB - There are several polymorphs of aluminum oxide, therefore, commercial aluminum oxides with different crystalline structures were selected to perform photocatalytic tests; boehmite, gamma, and alpha alumina polymorphs were chosen to analyze its photocatalytic activity for the mineralization of phenol and 4-chlorophenol using UV light. All the materials were characterized by X-ray diffraction, N2 physisorption, UV–vis diffuse reflectance spectroscopy, infrared spectroscopy, and nuclear magnetic resonance. Also, the type of photoinduced reactive species responsible to carry out the mineralization process, were evaluated, finding that the O2[rad]− radicals are determinants for the photocatalytic process. The reaction mechanism involving the sensitization of the phenolic pollutant on the surface of Al2O3 for its mineralization is proposed. Although Al2O3 is an insulator, in the present work, it is proved to be an efficient material for the mineralization of phenolic pollutants.
KW - Commercial alumina
KW - Phenolic pollutants mineralization
KW - Sensitization process
UR - http://www.scopus.com/inward/record.url?scp=85037646873&partnerID=8YFLogxK
U2 - 10.1016/j.jphotochem.2017.11.051
DO - 10.1016/j.jphotochem.2017.11.051
M3 - Artículo
AN - SCOPUS:85037646873
SN - 1010-6030
VL - 353
SP - 409
EP - 415
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
ER -