首页|Boosted tetracycline and Cr(VI) simultaneous cleanup over Z-Scheme BiPO4/CuBi2O4 p-n heterojunction with 0D/1D trepang-like structure under simulated sunlight irradiation
Boosted tetracycline and Cr(VI) simultaneous cleanup over Z-Scheme BiPO4/CuBi2O4 p-n heterojunction with 0D/1D trepang-like structure under simulated sunlight irradiation
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NSTL
Elsevier
? 2022 Elsevier B.V.In this study, BiPO4/CuBi2O4 (BPO-CBO) heterojunctions were prepared via hydrothermal method for singly and simultaneously degrading tetracycline (TC) and reducing Cr(VI) under simulated sunlight. The resultant 30% BPO-CBO heterojunction presented a 0D/1D trepang-like structure with a length of about 4 μm, a diameter about 1.5 μm and a size of 150–200 nm nanoparticles on the surface. It revealed outstanding removal efficiency of 92.0% and 60.3% for TC and Cr(VI) respectively, which were much higher than those results obtained when BiPO4 and CuBi2O4 were used individually. Moreover, the heterojunction displayed outstanding recyclability and reduced no more than 6% of initial time after five cycles. The remarkably enhanced photocatalytic properties were mainly ascribed to the unique trepang-like structure, the built-in electric field between p-n heterojunction and electron transfer the Z-Scheme pathways which was helpful to promote the separation of photogenerated carriers. Additionally, the corresponding reaction pathway and photocatalytic mechanism were further elucidated by the results of capturing experimental, ESR and LC-MS. This research provided a novel perspective for the construction of Z-Scheme p-n heterojunction with 0D/1D trepang-like structure in mixed contaminants purification.
State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry College of Environmental Science and Engineering Donghua University
School of Material Science and Engineering Jiangsu University of Science and Technology
School of Water and Environment Chang'an University
School of Water Resource and Environment Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse Hebei Center for Ecological and Environmental Geology Research Hebei Geo University
NSTL
Elsevier
