RRC ID 54412
Author Mio HAYASHI, Tsuyoshi OCHIAI, Shoko TAGO, Hiromasa TAWARAYAMA, Toshifumi HOSOYA, Tsukaho YAHAGI, Hitoshi ISHIGURO, and Akira FUJISHIMA
Title Fabrication of TiO2-coated Porous Silica Glass Tube and Evaluation as Environmental Purification Unit
Journal Electrochemistry
Abstract We fabricated TiO2-coated porous silica glass tubes containing macropores and evaluated their environmental purification capacity. We used two TiO2 coating methods: outside vapor deposition (OVD), and TiO2 precursor impregnation and calcination onto silica layers. The tubes exhibited air and water purification capabilities. Through a waterborne pathogens removal test, we confirmed that Escherichia coli and Legionella pneumophilia could be eliminated by filtration, even in conditions without UV-C irradiation. Moreover, the tube coated using OVD and irradiated with a UV-C lamp showed the highest Qβ reduction efficiency. The acetaldehyde decomposition properties under high-concentration conditions were outstanding (78% at 700ppm). From methylene blue decomposition tests,weconcludedthattheefficiencyof TiO2 photocatalytic decompositionwas affected bymultiple parameters, including the presence of anions and cations, as well as the solution pH.
Volume Volume 87 Issue 1 Pages 1-7
Pages 1-7
Published 2019-1-5
DOI 10.5796/electrochemistry.18-00062
Times Cited 0
Pathogenic bacteria JNBP_02916