Fabrication of a Porous TiO2-Coated Silica Glass Tube and Its Application for a Handy Water Purification Unit. (14th May 2014)

• Record Type: Journal Article
• Authors: Ochiai, Tsuyoshi; Tago, Shoko; Tawarayama, Hiromasa; Hosoya, Toshifumi; Ishiguro, Hitoshi; Fujishima, Akira
• Other Names: Andronic Luminita Academic Editor.
• Is Part Of: International journal of photoenergy. Volume 2014(2014)
• Publication Date: 2014-05-14
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Photochimie; Photobiologie; Chimie physique et théorique; Chemistry, Physical and theoretical; Photobiology; Photochemistry; Electronic journals; Periodicals; 541.35
• DOI: 10.1155/2014/584921
• Languages: English
• ISSNs: 1110-662X

Abstract

Abstract : A simple, handy, reusable, and inexpensive water purification unit including a one-end sealed porous amorphous-silica (a-silica) tube coated with 2 μ m of porous TiO2 photocatalyst layers has been developed. Both TiO2 and a-silica layers were formed through outside vapor deposition (OVD). Raman spectrum of the porous TiO2 -coated a-silica glass tube indicated that the anatase content of the TiO2 layers of the tube was estimated to be approximately 60 wt%. Developed porous TiO2 -coated a-silica glass tube has been assayed for the tube filtering feature against Escherichia coli ( E. coli ) solution used as one of the typical bacteria size species or Qβ phage also used as typical virus size species and compared with the feature of porous a-silica tubes alone. The tubes removed E. coli completely from the aqueous suspension which contained 10 6 CFU/mL of E. coli without UV irradiation. The porous TiO2 -coated a-silica glass tube with UV-C lamps successfully reduced the Qβ phage amount in the suspension from 10 9 to 10 3 PFU/mL.