Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 152, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2022.107075
Keywords
Antibiotics; MoS2; Photocatalysis; Spinel ferrites; Tetracycline
Categories
Funding
- National Natural Science Foundation of China [22172140, 21307104]
- Natural Science Foundation of Jiangsu Province, China [BK20211328]
- Science and Technology Project of Yangzhou [YZ2021163]
- Special Fund for Medical Innovation and Transformation of Yangzhou University [AHYZUCXTD202108]
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The overuse and dissemination of antibiotics pose serious threats to the environment and public health. In this study, a MoS2/CdFe2O4 composite material was designed and prepared, which exhibited excellent photocatalytic activity for tetracycline degradation under visible light and could be easily separated and reused.
The overuse and dissemination of antibiotics caused serious threats to the environment and public health. In this work, a molybdenum disulfide-magnetic spinel ferrite composite (MoS2/CdFe2O4) with a low bandgap was designed and prepared by a two-step hydrothermal method. Compared with MoS2, CdFe2O4 and other MoS2/CdFe2O4 composites, the 60% MoS2/CdFe2O4 composite showed best visible light induced photocatalytic activity towards tetracycline (TC) degradation reaction. More than 87% of TC (25 ppm) can be degraded under visible light till 120 min. The degradation of TC over the MoS2/CdFe2O4 composites followed the pseudo-first-order kinetics. The 60% MoS2/CdFe2O4 composite had largest apparent reaction rate constant of 11.36 x 10(-3) min(-1). Due to its magnetic property, the MoS2/CdFe2O4 composite with saturation magnetization value of 7.0 emu g(-1) can be separated easily from water and reused. Based on the band structure and active species analysis, a Z-scheme structure was formed in the MoS2/CdFe(2)O(4)composite, which accelerated photocatalytic oxidation. The hydroxyl radicals (OH) were detected under visible light irradiation and provided strong photocatalytic oxidation performance. This work may provide new ideas for designing visible light responsive and magnetic CdFe2O4 photocatalysts.
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