期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 16, 期 5, 页码 723-727出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2010.07.012
关键词
Photocatalyst; TiO2 nano-powders; AFD process; Decomposition of methylene blue; Bactericidal effect of E. coli
资金
- Ministry of Education, Science and Technology [2009-0094057]
- Center for Photonic Materials and Devices at Chonnam National University
- National Research Foundation of Korea [2009-0094057] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Carbon-doped titanium dioxide (TiO2) nano-powders were synthesized by the aerosol flame deposition (AFD) process using 2-butanol liquid sol containing 20 wt% of titanium isopropoxide (TTIP). They were mesoporous nano-powders with particle size ranging from 20 to 40 nm, the specific surface area of 36 m(2)/g, and the pore size of 19 nm. They had the anatase structure and showed high photocatalytic activity not only under UV-A light but also under fluorescent light. They reduced the concentration of methylene blue (MB) from 5.0 to 1.5 ppm within 2 h under UV-A light and from 5.0 to 2.0 ppm within 4 h under fluorescent light. And, they killed 99% of Escherichia coli (E. coli) cells within 2 h and bacterial growth of the E. coli was not observed for 12 h under both UV-A and fluorescent lights. (C) 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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