Paper Title:
Porous Barium Strontium Titanate-Titania Nanocomposites for Photocatalytic Applications
  Abstract

Porous barium strontium titanate−titania (BST−TiO2) nanocomposite was developed by the combination of electrochemical anodization and hydrothermal synthesis. Self organized titania nanotube arrays were first fabricated by electrochemical anodization of titanium foil in 0.2 wt.% HF. The as-anodized titania was then used as a template and was subject to a hydrothermal treatment in the solution mixture of barium hydroxide and strontium hydroxide with different molar ratios. Well crystallized barium strontium titanate was developed directly from the titania nanotubes. Annealing was carried out to transform residual amorphous titania to crystallized anatase, resulting in the porous BST−TiO2 nanocomposite. The surface morphology and structure of the nanocomposite were characterized. The photoelectrochemical response of the BST−TiO2 composite was investigated and the photocatalytic property was evaluated through the photo-decomposition of an organic dye solution. The effect of hydrothermal parameters on the surface morphology and the photocatalytic activity of the nanocomposite was studied.

  Info
Periodical
Advanced Materials Research (Volumes 47-50)
Edited by
Alan K.T. Lau, J. Lu, Vijay K. Varadan, F.K. Chang, J.P. Tu and P.M. Lam
Pages
936-939
DOI
10.4028/www.scientific.net/AMR.47-50.936
Citation
G. G. Zhang, H. T. Huang, H. L. W. Chan, L. M. Zhou, "Porous Barium Strontium Titanate-Titania Nanocomposites for Photocatalytic Applications", Advanced Materials Research, Vols. 47-50, pp. 936-939, 2008
Online since
June 2008
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$32.00
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