Journal
APPLIED SURFACE SCIENCE
Volume 256, Issue 11, Pages 3380-3385Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2009.12.038
Keywords
Conducting polymer; TiO2/fly-ash cenospheres; Photo-degradation; Antibiotics; Roxithromycin
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Funding
- Research Foundation of Jiangsu University, China [04JDG017]
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A series of poly-o-phenylenediamine/TiO2/fly-ash cenospheres(POPD/TiO2/fly-ash cenospheres) composites have been prepared from o-phenylenediamine and TiO2/fly-ash cenospheres under various polymerization conditions. The properties of the samples were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), specific surface area (BET), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and UV-vis diffuse reflectance spectrum (UV-vis DRS). Photocatalytic activity was studied by degradation of antibiotics waste water under visible light. The results indicate that the photo-induced method is viable for preparing modified photocatalysts, and the modified photocatalysts have good absorption in visible light range. The photocatalysts of POPD/TiO2/fly-ash cenospheres which have good performance are prepared at pH 3 and 4, and the polymerized time around 40 min. When the photocatalysts are prepared under the conditions of pH 3 and polymerized time 40 min, the degradation rate of roxithromycin waste water could reach near 60%, and it indicates that the way of POPD modified TiO2/fly-ash cenospheres to degrade the antibiotics waste water is viable. (C) 2009 Elsevier B. V. All rights reserved.
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