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- Title
Synthesis of an inorganic-framework molecularly imprinted Fe-doped TiO<sub>2</sub> composite and its selective photo-Fenton-like degradation of acid orange II.
- Authors
Song, Yanqun; Rong, Chuan; Shang, Jiaobo; Wang, Yinghui; Zhang, Yuanyuan; Yu, Kefu
- Abstract
BACKGROUND The heterogeneous photo-Fenton-like process is emerging as a promising treatment of dye-containing wastewater because of its economic feasibility and high efficiency. However, it is still required to develop photo-Fenton-like catalysts with highly selective degradation ability and reusability. RESULTS Inorganic-framework molecularly imprinted Fe-doped TiO2 composites ( MIP/Fe- TiO2) were successfully prepared by the sol-gel method, with acid orange II as the template and TiO2 as the matrix material. The photo-Fenton-like catalysts were characterized using FESEM, EDS, BET, X-ray diffraction, FT-IR spectroscopy and UV-vis diffuse reflectance spectroscopy. These methods revealed the well-crystallized anatase phase and good nanometer-level particle sizes. The adsorption property and photo-Fenton-like activity of the catalysts were also studied in single and binary systems, respectively. CONCLUSIONS Compared with non-imprinted Fe- TiO2 composites ( NIP/Fe- TiO2), MIP/Fe- TiO2 showed higher adsorption capacity and selectivity toward the template molecule. In addition, it was found that the molecular recognition ability of MIP/Fe- TiO2 provided the catalysts with rapidly selective photo-Fenton-like degradation of low target pollutant levels (20 mg L−1) in the presence of high levels of interferential pollutant sodium dodecyl benzene sulfonate (100 mg L−1). Moreover, because of the stable physicochemical properties of the inorganic framework, the new photo-Fenton-like catalysts were resistant to photochemical attack and showed favorable reusability. © 2017 Society of Chemical Industry
- Subjects
DOPING agents (Chemistry); IRON compound synthesis; WASTEWATER treatment; HETEROGENEOUS catalysts; DYES &; dyeing &; the environment; SOL-gel processes; FOURIER transform infrared spectroscopy
- Publication
Journal of Chemical Technology & Biotechnology, 2017, Vol 92, Issue 8, p2038
- ISSN
0268-2575
- Publication type
Article
- DOI
10.1002/jctb.5199