Eliminación fotocatalítica de contaminantespreparación de nuevos fotocatalizadores a partir de cenizas volcánicas

  1. Pedro Esparza Ferrera
  2. María Emma Borges Chinea
  3. Laura Díaz
  4. Tania Hernández
  5. Eduardo Medina
  6. Pedro Francisco Martín Zarza
Journal:
Estudios Canarios: Anuario del Instituto de Estudios Canarios

ISSN: 0423-4804

Year of publication: 2011

Issue: 55

Pages: 323-340

Type: Article

Export: RIS

Abstract

Photocatalysis application in effluent decontamination is becoming one of the most promising green chemistry technologies. In this paper, natural volcanic ash particles have been characterized and used either as photocatalysts or as a support for a titania-containing photocatalyst. e natural material alone displayed good photocatalyst behaviour as a consequence of the presence of some titanium compounds in its composition. e original ashes were further loaded with TiO2 under hydrothermal conditions. Activity tests of these Ti-loaded materials in the photocatalytic decomposition and elimination of phenol-type organic pollutants and dye pollutants photodegradation using methylene blue as model molecule in water displayed good activity which makes them candidates to be used as photocatalysts for waste water treatment.