期刊
SURFACE & COATINGS TECHNOLOGY
卷 204, 期 6-7, 页码 1141-1144出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2009.06.050
关键词
TiO2; Sol-gel method; Fe3O4; Fish pathogens
The purpose of this research is to develop a bactericidal photocatalytic TiO2 that can be activated by visible light and can be conveniently recollected for reusing. This research synthesizes the 22 to 33 nm TiO2/Fe3O4 particles with magnetization of 2.9emu/g using modified sol-gel method followed by 500 degrees C calcinations. The experiment verifies that both household fluorescent light (HFL, contains minor UV-A) and visible fluorescent light (VFL, contains no UV-A) can activate the photocatalytic activity of TiO2/Fe3O4 particles as did ultraviolet A light (UV-A, 360 nm). Regular magnets can be used to separate TiO2/Fe3O4 particles from solution. There have not been any significant weight and photocatalytic activity lost during 2 reusings. After 60 min and 120 min VFL irradiation, the bactericidal efficiencies of TiO2/Fe3O4 are 35% and 72% for Streptococcus iniae and 35% and 53% for Edwardsiella tarda, respectively. The results indicate that VFL irradiated TiO2/Fe3O4 particles can disinfect fish pathogens in the absence of UV-A and the issue of TiO2/Fe3O4 recollection from water for reusing is also resolved. (C) 2009 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据