Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 68, Issue -, Pages 14-23Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2018.07.024
Keywords
Cubic alpha-Fe2O3; TiO2 coating; Well-matched interface; Photo-Fenton degradation; Tetracycline
Funding
- National Natural Science Foundation of China [21506103, 51608512]
- Science and Technology Support Program of Sichuan Province [2015GZ0170]
- Major Training Program of the Education Department of Sichuan Province [15CZ0026, 17CZ0019]
- Science Foundation of the Education Department of Sichuan Province [17ZA0221]
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TiO2-coated cubic alpha-Fe2O3 with mostly exposed (012) and (101) facets (alpha-Fe2O3@TiO2) was fabricated using a hydrothermal route for the photo-Fenton degradation of tetracycline under visible light irradiation. TiO2 coating could greatly affect the photocatalytic activity of alpha-Fe2O3@TiO2. Compared with cubic alpha-Fe2O3 alone for photodegradation of tetracycline, alpha-Fe2O3@TiO2 with TiO2 shell of around 15 nm exhibited higher removal efficiency of tetracycline in photo-Fenton system, and its durability was slightly affected after five cycle times under same conditions. It is ascribed to the well-matched interface between cubic alpha-Fe2O3 core and TiO2 shell, leading to the broadened light-absorption and the efficient separation of photo-generated electon-hole pairs. The (OH)-O-center dot radicals were main responsible for the advanced photocatalytic performance of alpha-Fe2O3@TiO2 in visible-light driven degradation of tetracycline. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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