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Sonication‐Assisted Low‐Temperature Routes for the Synthesis of Supported Fe–TiO 2 Econanomaterials: Partial Photooxidation of Glucose and Phenol Aqueous Degradation
Author(s) -
Colmenares Juan C.,
Magdziarz Agnieszka,
Chernyayeva Olga,
Lisovytskiy Dmytro,
Kurzydłowski Krzysztof,
Grzonka Justyna
Publication year - 2013
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201300025
Subject(s) - photocatalysis , photodegradation , phenol , x ray photoelectron spectroscopy , dopant , aqueous solution , diffuse reflectance infrared fourier transform , physisorption , chemistry , high resolution transmission electron microscopy , nuclear chemistry , catalysis , adsorption , inorganic chemistry , materials science , chemical engineering , doping , organic chemistry , nanotechnology , optoelectronics , transmission electron microscopy , engineering
Fe‐doped TiO 2 ‐supported photocatalytic materials prepared by the use of a mild ultrasound‐assisted protocol have been found to possess excellent selectivities in glucose oxidation and total phenol mineralization. These materials were characterized by a number of techniques such as XRD, diffuse reflectance UV/Vis spectroscopy, N 2 physisorption, X‐ray photoelectron spectroscopy, SEM with X‐ray microanalysis, HRTEM, and flame atomic absorption spectroscopy. The proposed synthesis method was found to have a significant effect on textural properties, morphology, and visible‐light responsiveness of nanophotocatalysts. The dopant agent was found to be in the form of Fe 3+ ions. The effects of the textural properties, together with the Fe presence and the adsorption ability of the material (acidic properties), seem to be involved in the optimum photocatalytic activities found for Fe–TiO 2 supported on zeolite. In phenol photodegradation, although Fe doping demonstrated the detrimental effect on the conversion rate, an improvement in the direct mineralization of phenol to CO 2 and water, particularly for the SiO 2 ‐supported photocatalyst, with a negligible content of toxic byproducts in water has been observed in comparison with commercially available Evonik P25.