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Reference type: Journal
Authors: Lu ZY, Huo PW, Luo YY, Liu XL, Wu D, Gao X, Li CX, Yan YS
Article Title: Performance of molecularly imprinted photocatalysts based on fly-ash cenospheres for selective photodegradation of single and ternary antibiotics solution.
Publication date: 2013
Journal: Journal of Molecular Catalysis A: Chemical
Volume: 378
Page numbers: 91-98.
DOI: 10.1016/j.molcata.2013.06.001
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1381116913002306

Abstract: TiO2, as a steady and inexpensive photocatalysis, is widely applied for removal of organic pollutants. However, the poor selectivity of TiO2 is not conducive to remove high toxic pollutants from mixed solution in the presence of other pollutants. By using tetracycline (TC) as the molecular template and POPD/TiO2/fly-ash cenospheres as the supporter, molecularly imprinted photocatalyst (MIP) possessed the specific recognition ability toward TC was synthesized via the surface imprinting technology and the photo-induced method. This as-prepared MIP possessed hollow spherical structure, the average diameter was ranged from 90 μm to 140 μm. Moreover, the photocatalytic activity of MIP was evaluated by degrading 20 mg/L TC solution under the visible light irradiation, and the photodegradation rate could reach 77%. In addition, MIP showed the strong ability to selective recognition and photodegradation of TC in the ternary solution containing TC, oxytetracycline (OTC) and ciprofloxacin (CIP), and the coefficient of selectivity (kselectivity) of degradation of TC relative to OTC and CIP was 1.67 and 1.25, respectively. The photodegradation mechanism of TC was also discussed through the mass spectrum (MS), the results indicated that TC was degraded step by step and finally decomposed to CO2, H2O and other gaseous components
Template and target information: tetracycline, TC
Author keywords: Degradation mechanism, Fly-ash cenospheres, Selective photodegradation, Surface imprinting technology, Ternary antibiotics solution


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