1. Repositorio Digital IPN
  2. Posgrado
  3. Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada "Unidad Legaria"
  4. Tesis
  5. Doctorado
Por favor, use este identificador para citar o enlazar este ítem: http://repositoriodigital.ipn.mx/handle/123456789/10593
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dc.creatorMantilla, A.-
dc.creatorJacome Acatitla, G.-
dc.creatorMorales Mendoza, G.-
dc.creatorTzompantzi, F.-
dc.creatorGomez, R.-
dc.date2012-03-14T00:00:14Z-
dc.date2012-03-14T00:00:14Z-
dc.date2010-08-09-
dc.date.accessioned2013-01-16T08:18:02Z-
dc.date.available2013-01-16T08:18:02Z-
dc.date.issued2013-01-16-
dc.identifier8885885-
dc.identifierhttp://hdl.handle.net/123456789/58-
dc.identifier.urihttp://www.repositoriodigital.ipn.mx/handle/123456789/10593-
dc.descriptionMgAl hydrotalcites, or layered double hydroxides (LDHs), with different Mg/Al molar ratios were synthesized by the coprecipitation method. The structure of the solids was collapsed by thermal treatment at 723 K obtaining MgAl mixed oxides with high specific surface areas (264-318 m2/g). When these oxides were put in contact with aqueous solutions containing 4-chlorophenol and para-cresol (80 ppm:0.62 and 0.73 mmol, respectively) the layered structure was recovered by rehydration of the material showing the named “memory effect” of LDH materials. Mg/Al LDHs were active for chlorophenol and p-cresol degradation under UV irradiation, being more active and selective to the mineralization of the pollutants than TiO2 P-25 photocatalysts. Since Mg/Al hydrotalcites are not semiconductors their high photoassisted activity was surprising; this activity was explained by a photo excitation which produces mobility of charges in the lamellar structure, inducing the formation of photoactive defects.-
dc.descriptionFotodegradación de clorofenol inducida por hidrotalcitas MgAl sintetizadas por el método sol-gel.-
dc.descriptionInstituto Politecnico Nacional, CONACYT-
dc.languageen-
dc.subjectFotodegradación-
dc.subjecthidrotalcitas-
dc.titlePhotoassisted degradation of 4-chlorophenol and p -cresol using MgAl hydrotalcites-
dc.typeArticle-
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