期刊
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
卷 24, 期 4, 页码 557-561出版社
WUHAN UNIV TECHNOLOGY
DOI: 10.1007/s11595-009-4557-z
关键词
montmorillonite titanium dioxide; photocatalytic antibacterial; cell disruption; TOC/TN
资金
- MOST of China [2004CB619204]
- Ministry of Education of China [02052]
- National High Tech. 863 Program of China [2007AA06Z100]
- Scientific and Technological Research Key Project [2007AA06Z123]
The photo-induced antibacterial capacity of montmorillonite supported titanium dioxide (TiO2/Mmt for short) was evaluated by using Escherichia coli and Staphylococcus aureus as modal organisms. The bactericidal activity of TiO2/Mmt was examined by cell viability assay under different illumination modes. Atomic force microscopy (AFM) and total organic carbon/Total nitrogen (TOC/TN) analyses were employed to investigate the mechanism of the photocatalytic bactericidal process qualitatively and quantitatively. The kinetic data show that TiO2/Mmt has excellent antibacterial performance, and about 99% of both bacteria cells are inactivated within 75 min illumination. The AFM images demonstrate that the bacterial cells are irreversibly decomposed and some cell components are dissolved. Therefore, the content and phase of carbon and nitrogen in the solution are changed after photocatalytic reaction.
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