期刊
BUILDING AND ENVIRONMENT
卷 65, 期 -, 页码 215-221出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.buildenv.2013.04.014
关键词
Acrylic-silicon/nano-TiO2 films; Formaldehyde; Nitrogen oxides; Visible light; Photodegradation
资金
- Natural Science Foundation of China [21076009]
- (863) High Technology Project [2012AA021402]
- Program for New Century Excellent Talents in University [NCET-100212]
- SRF for ROCS, SEM [LXJJ2012-001]
Through a novel green and low-cost emulsion blend method, acrylic-silicon/nano-TiO2 films (ASTF) were prepared showing a broad absorption band in the visible light region and could be used for the photodegradation of indoor gaseous pollutants under visible light irradiation. Compared with acrylic-silicon films, the photodegradation rate of ASTF with TiO2 content of 1% (w/v) increased by almost twice for both gaseous formaldehyde (from 28% to 76.7% at the initial concentration of 0.8 mg/m(3)) and NO2 (from 20% to 68% at the initial concentration of 3.7 mg/m(3)) under visible light irradiation for 24 h and 50 h, respectively. The binary gas degradation confirmed the higher affinity of NO2 for ASTF. In addition, ASTF with Fe-III ion doping (<100 mg/L) showed even higher photocatalytic activity with maximum degradation rate of 83.4% for formaldehyde under visible light irradiation for 24 h. ASTF, as a kind of eco-friendly coating material, could be used easily in domestic buildings for our daily life. (c) 2013 Elsevier Ltd. All rights reserved.
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