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Xiaogang Zheng,Wendi Fu,Fuyan Kang,Hao Peng,Jing Wen 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.68 No.-
TiO2-coated cubic α-Fe2O3 with mostly exposed (012) and (101) facets (α-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 α-Fe2O3@TiO2. Compared with cubic α-Fe2O3 alone for photodegradation of tetracycline, α-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 α-Fe2O3 core and TiO2 shell, leading to the broadened light-absorption and the efficient separation of photo-generated electon–hole pairs. The OH radicals were main responsible for the advanced photocatalytic performance of α-Fe2O3@TiO2 in visible-light driven degradation of tetracycline.