期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 140, 期 -, 页码 619-625出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2013.04.070
关键词
Air treatment; Continuous flow reactor; Nitrogen-Fluorine doped TiO2; Daylight photocatalysis
资金
- European Union (European Social Fund/ESF)
- Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF) - Research Funding Program: Thales-Investing in knowledge society through the European Social Fund [NANOMESO-MIS 377064]
Visible light activated nanostructured TiO2 with nitrogen and fluorine co-dopants were prepared by the surfactant assisted sal-gel method and immobilized on glass substrates by dip coating. The films were inserted inside a continuous flow photoreactor and examined for the photocatalytic oxidation of NO air pollutant with initial concentration of 200-800 ppbv. The modified catalysts exhibited significant photocatalytic activity under daylight illumination, with maximum percentage of NO removal equal to 24.2% and photooxidation rate up to 0.66 mu g m(-2) s(-1). The reaction rates increased proportionally to the incident light intensity whereas for the strongly absorbed UV light a deviation from linearity was observed. Mass balance during photooxidation was confirmed by determining the amount of NO3- product residues onto the photocatalyst surface. (C) 2013 Elsevier B.V. All rights reserved.
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