How to Cite
Downloads
Métricas Alternativas
Dimensions
Abstract
With the objective of inducing germicidal effects on the surface of a sanitary ceramic enameled under characteristic conditions of the industry, different concentrations of TiO2 were included in a standard composition of reference and there were carried out variations in the thermal treatment. Optical analysis of spectrophotometry UV/VIS and spectrofluorimetry, analysis of structural control, and the later evaluation of the germicidal behavior of selected samples on a strain of Escherichia coli allowed us to determine a decrease in the population regarding the reference enamel, and to relate this behavior with a larger optical absorption in the interval 310-380 nm, higher fluorescent emission in the interval 620-635 nm, and notable presence of rutile crystals.
Keywords
References
Anderson C., Bard A.J. 1995. An improved photocatalyst of TiO2/SiO2 prepared by a sol–gel synthesis, J. Phys. Chem; (99): 9882-9885.
Candal R.J., Rodríguez J, Colón G. Materiales para fotocatálisis y electrofotocatálisis. Proyecto Universidad de Buenos Aires - Agencia de promoción Científica y Tecnológica. En línea: http://www.psa.es/webeng/solwater/files/CYTED01/13cap07.pdf.
Doménech X., Jardim W. y Litter M. Procesos avanzados de oxidación para la eliminación de contaminantes. CYTED, Proyecto CNEA-CAC-UAQ #95-Q-03-05. En línea: http://www.psa.es/webeng/solwater/files/CYTED01/06cap01.pdf.
Durán A. (Ed). 2004. Introducción a los esmaltes cerámicos. CYTED, Faenza Editrice Ibérica, Madrid, 224 p.
Fernández Navarro J. M. 1991. El vidrio. 2a ed. Consejo Superior de Investigaciones Científicas. Fundación Centro Nacional del Vidrio, Madrid.
Fujishima A., Honda K. 1972. Electrochemical photolysis of water at a semiconductor electrode. Nature; (238): 37-38.
Fujishima A., Rao T., Tryk D. 2000. Titanium dioxide photocatalysis. Journal of Photochemistry and Photobiology C: Photochemistry Reviews, (1): 1-21.
Galindo Urquijo, J. 2001. Viabilidad del uso de vidrio reciclado en la fabricación de frita para esmaltado cerámico [Trabajo Dirigido de Grado] Facultad Nacional de Minas, Universidad Nacional de Colombia.
Heller, A. 1995. Chemistry and applications of photocatalytic oxidation of thin organic films, Acc. Chem. Res; (28): 503-508.
Karvinen S, Lamminmäki R.J. 2003. Preparation and characterization of mesoporous visible-light-active anatase. Solid State Sciences (5): 1159-1166.
Kemmitt T, Al-Salim N.I., Waterland M, Kennedy V.J., Markwitz A. 2004. Photocatalytic titania coatings. Current Applied Physics; (4): 189-192.
Kumar M., Uniyal A., Chauhan APS & Singh S.P. 2003. Optical absorption and fluorescent behaviour of titanium ions in silicate glasses. Bull. Mater. Sci., Vol. 26, (3): 335-341.
Matthews R.W. 1987. Photooxidation of organic impurities in water using thin films of titanium dioxide, J. Phys. Chem; (91): 3328-3333.
Mecner P., Krejcová Z., Hollerová I., Sornad Z. 2003. Controlled crystallisation of TiO2 in alkaliborosilicate glass and its bactericidal properties. Ceramics - Silikáty 47 (2): 56-62.
Mills A., Lepre A., Elliott N., Bhopal S., Parkin IP., O’Neill S.A. 2003. Characterisation of the photocatalyst Pilkington ActivTM: a reference film photocatalyst? Journal of Photochemistry and Photobiology A: Chemistry; 160: 213-224.
Sánchez, E. 1997. Materias primas para la fabricación de fritas y esmaltes cerámicos. Instituto de Tecnología Cerámica, Asociación de Investigación de las Industrias Cerámicas. Universidad Jaume I, Castellón, España. Cerámica Industrial 2.
Tichell M., Pascual A., Bakali, J. 1998. Desarrollo de vidriados cerámicos con propiedades ópticas de absorción y emisión, aplicados como esmaltes para azulejos cerámicos con propiedades bactericidas. Qualicer 98. Castellón, España.
Voskanyan K. UV and visible Light induced mutations in Escherichia coli. Department of Radiobiology, Joint Institute of Nuclear Research, Russia. En línea (a)
Voskanyan K., Some general regularities of ionizing and 633 nm laser radiation action on bacteria. Laboratory of nuclear problems, Joint Institute of Nuclear Research, Russia. En línea (b)http://www.photobiology.com/photobiology99/contrib/karin/index.html
Xie Y, Yuan C. 2003. Visible-light responsive cerium ion modified titania sol and nanocrystallites for X-2B dye photodegradation. Applied Catalysis B: Environmental; (46): 251-259.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2023 https://creativecommons.org/licenses/by-nc-nd/4.0