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Title: Photocatalytic activity of erbium-doped TiO{sub 2} nanoparticles immobilized in macro-porous silica films

Abstract

Highlights: Black-Right-Pointing-Pointer Erbium-doped TiO{sub 2} nanoparticles were immobilized on macro-porous silica films. Black-Right-Pointing-Pointer The films were obtained by a phase separation process. Black-Right-Pointing-Pointer The samples exhibited photo-catalytic activity under visible light. Black-Right-Pointing-Pointer The sensitization of TiO{sub 2} was attributed to a red shift in the TiO{sub 2} band-gap. -- Abstract: A macro-porous silica film served as mechanical support to immobilize TiO{sub 2} nanoparticles, which were doped with erbium. The films and the nanoparticles were prepared by sol-gel route. The nanoparticles exhibited photocatalytic activity under visible light. We obtained a degradation rate of methylene blue that followed first order kinetics. The sensitization of the nanoparticles to visible light was attributed to a red shift in the band-gap of the TiO{sub 2} due to the addition of erbium ions.

Authors:
; ; ;  [1];  [2]
  1. C.U. de los Lagos, Universidad de Guadalajara, Lagos de Moreno, Jalisco (Mexico)
  2. C. U. de Ciencias Exactas e Ingenieria, Universidad de Guadalajara, Guadalajara, Jalisco (Mexico)
Publication Date:
OSTI Identifier:
22212413
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 2; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ATOMIC FORCE MICROSCOPY; DOPED MATERIALS; ERBIUM; ERBIUM IONS; METHYLENE BLUE; NANOSTRUCTURES; PARTICLES; PHOTOCATALYSIS; RED SHIFT; SEPARATION PROCESSES; SILICA; THIN FILMS; TITANIUM OXIDES; X-RAY DIFFRACTION

Citation Formats

Castaneda-Contreras, J., E-mail: jcc050769@yahoo.com.mx, Maranon-Ruiz, V. F., Chiu-Zarate, R., Perez-Ladron de Guevara, H., Rodriguez, R., and Michel-Uribe, C. Photocatalytic activity of erbium-doped TiO{sub 2} nanoparticles immobilized in macro-porous silica films. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2011.11.021.
Castaneda-Contreras, J., E-mail: jcc050769@yahoo.com.mx, Maranon-Ruiz, V. F., Chiu-Zarate, R., Perez-Ladron de Guevara, H., Rodriguez, R., & Michel-Uribe, C. Photocatalytic activity of erbium-doped TiO{sub 2} nanoparticles immobilized in macro-porous silica films. United States. https://doi.org/10.1016/J.MATERRESBULL.2011.11.021
Castaneda-Contreras, J., E-mail: jcc050769@yahoo.com.mx, Maranon-Ruiz, V. F., Chiu-Zarate, R., Perez-Ladron de Guevara, H., Rodriguez, R., and Michel-Uribe, C. 2012. "Photocatalytic activity of erbium-doped TiO{sub 2} nanoparticles immobilized in macro-porous silica films". United States. https://doi.org/10.1016/J.MATERRESBULL.2011.11.021.
@article{osti_22212413,
title = {Photocatalytic activity of erbium-doped TiO{sub 2} nanoparticles immobilized in macro-porous silica films},
author = {Castaneda-Contreras, J., E-mail: jcc050769@yahoo.com.mx and Maranon-Ruiz, V. F. and Chiu-Zarate, R. and Perez-Ladron de Guevara, H. and Rodriguez, R. and Michel-Uribe, C.},
abstractNote = {Highlights: Black-Right-Pointing-Pointer Erbium-doped TiO{sub 2} nanoparticles were immobilized on macro-porous silica films. Black-Right-Pointing-Pointer The films were obtained by a phase separation process. Black-Right-Pointing-Pointer The samples exhibited photo-catalytic activity under visible light. Black-Right-Pointing-Pointer The sensitization of TiO{sub 2} was attributed to a red shift in the TiO{sub 2} band-gap. -- Abstract: A macro-porous silica film served as mechanical support to immobilize TiO{sub 2} nanoparticles, which were doped with erbium. The films and the nanoparticles were prepared by sol-gel route. The nanoparticles exhibited photocatalytic activity under visible light. We obtained a degradation rate of methylene blue that followed first order kinetics. The sensitization of the nanoparticles to visible light was attributed to a red shift in the band-gap of the TiO{sub 2} due to the addition of erbium ions.},
doi = {10.1016/J.MATERRESBULL.2011.11.021},
url = {https://www.osti.gov/biblio/22212413}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 2,
volume = 47,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2012},
month = {Wed Feb 15 00:00:00 EST 2012}
}