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Photocatalytic properties of BiOCl-TiO2 composites for phenol photodegradation

dc.contributor.authorSánchez Rodríguez, Dalia Verónica
dc.contributor.authorMéndez Medrano, María Guadalupe
dc.contributor.authorRemita, Hynd
dc.contributor.authorEscobar Barrios, Vladimir Alonso
dc.date.accessioned2019-09-02T22:03:53Z
dc.date.available2019-09-02T22:03:53Z
dc.date.issued2018
dc.identifier.citationDalia Sánchez-Rodríguez, María Guadalupe Méndez Medrano, Hynd Remita, Vladimir Escobar-Barrios, Photocatalytic properties of BiOCl-TiO2 composites for phenol photodegradation, Journal of Environmental Chemical Engineering, Volume 6, Issue 2, 2018, Pages 1601-1612.
dc.identifier.urihttp://hdl.handle.net/11627/5181
dc.description.abstract"BiOCl-TiO2 composites were synthesized by sol-gel method; using two commercial BiOCl (P2600 and SB) with different BiOCl-TiO2 weight ratios. They were characterized by different techniques such as X-ray diffraction (XRD), electron microscopy (SEM, HRTEM and TEM), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), time resolved micro-wave conductivity (TRMC) and UV–vis diffuse reflectance spectroscopy (UV-DRS). In addition, these composites (BiOCl-TiO2) were evaluated for the photodegradation of phenol (50?mgL?1) under visible irradiation (??>?450?nm). The results showed effective phenol degradation with the PTi-75 composite, which has 75% by weight of TiO2, obtaining up to 40% of degradation during 6?h of reaction. The SEM analysis showed that micro-sheets of BiOCl are irregularly embedded on agglomerates of TiO2 nanoparticles. A mechanism was proposed, which considers the excitation by the overlap of the BiOCl-TiO2 bands; where the TiO2 has a conduction band more electronegative than that of BiOCl, allowing that TiO2 electron of the conduction band can be transferred to conduction band of BiOCl; while the holes present in the valence band of BiOCl can be moved to TiO2 valence band preventing the electron-holes recombination."
dc.publisherElsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectBiOCl
dc.subjectTiO2
dc.subjectPhotocatalysis
dc.subjectPhenol
dc.subjectVisible light
dc.subject.classificationINGENIERÍA Y TECNOLOGÍA
dc.titlePhotocatalytic properties of BiOCl-TiO2 composites for phenol photodegradation
dc.typearticle
dc.identifier.doihttps://doi.org/10.1016/j.jece.2018.01.061
dc.rights.accessAcceso Abierto


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional