Journal
APPLIED SURFACE SCIENCE
Volume 416, Issue -, Pages 248-258Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.04.174
Keywords
Ti-doped MCM-41; Tetracycline antibiotics; Biotoxicity
Categories
Funding
- Taiwan Ministry of science and Technology [MOST 104-2622-E-197-007-CC3]
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Ti-doped MCM-41 with different Si/Ti molar ratios was prepared at room temperature to degrade tetracycline antibiotics in aqueous solution. The Ti was doped into the skeleton structure of MCM-41. The photocatalytic activity of Ti-doped MCM-41 was investigated. The optimal catalyst had Si/ Ti molar ratio of 25 and over 99% removal of oxytetracycline in 150 min, and the removal could maintain 98% after 5 reuses. Ions and soluble organic matters in natural water affected the degradation reaction when Ti-doped MCM-41 was used to treat simulated wastewater of chicken farms. The degradation products of oxytetracycline, tetracycline and chlortetracycline were detected by Escherichia coli DH5 alpha and HPLC-MS/MS. No intermediate product with higher toxicity was detected. (C) 2017 Elsevier B.V. All rights reserved.
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