Paper Title:
Photocatalytic Fiber for Environmental Application
  Abstract

In order to avoid large problems regarding peering of the titania layer coated on the substrate, we developed an epoch-making “strong titania fiber” consisting of photoactive surface layer with a nanometer-scale compositional gradient, which can effectively oxidize any kind of organic materials. An effective water-purification system using this fiber has been also developed. The basis of this technology is to incorporate a selected low-molecular-mass additive (Ti(OC4H9)4) into a precursor polymer from which the ceramic forms. After melt-spinning the resulting precursor polymer, thermal treatment of the spun fiber leads to controlled phase separation (“bleed-out”) of the additive; subsequent calcination stabilizes the compositionally changed surface region, generating a functional surface layer. This fiber consists of the silica-based core-structure and the gradient-like surface titania layer, which are strongly sintered. We also developed a water-purifier using this fiber (felt material). Any bacteria (common bacterium, legionera pneumophila, colon bacillus, heterotrophic bacteria, and so forth) and organic chemicals (dioxin, PCB, and so forth) were effectively decomposed into CO2 and H2O passing through the above purifier.

  Info
Periodical
Edited by
P. VINCENZINI
Pages
2118-2126
DOI
10.4028/www.scientific.net/AST.45.2118
Citation
T. Ishikawa, "Photocatalytic Fiber for Environmental Application", Advances in Science and Technology, Vol. 45, pp. 2118-2126, 2006
Online since
October 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Makoto Kobayashi, Koji Tomita, Valery Petrykin, Shu Yin, Tsugio Sato, Masahiro Yoshimura, Masato Kakihana
Abstract:Highly crystalline titania nano-particles were synthesized by hydrothermal method using novel stable water-soluble titanium complexes. It...
723
Authors: Rafael van Grieken, José Aguado, María José López-Muñoz, Javier Marugán
Abstract:This paper presents a review of the work published by the authors on the synthesis, characterization and evaluation of the photocatalytic...
221
Authors: Jian Yun He, Ke Jian Wang
Abstract:Nano-coatings were prepared by sol-gel process using titanium butoxide and cerium salt as precurors. The substrates were coated by dip-draw...
587
Authors: Tao Yu, Xin Tan, Peng Chen, Hong Mei Wang
Chapter 8: Energy Materials, Engineering Materials and Processing Technologies
Abstract:Lanthanum-doped anatase TiO2 coatings, which are composed of assemble crystalline of 50 nm diameter particles, when the percentage...
1651
Authors: Lin Li, Sheng Qi Xi, Yang Nan Xing, Fei Hu Shang
Abstract:Titania powder was prepared by a sol-gel method and heat-treatment (HT). The morphology and structure of the titania powder were...
849