Plastics adsorption and removal by 2D ultrathin iron oxide nanodiscs: From micro to nano
Date
2024
Authors
Cao, Y.
Sathish, C.I.
Li, Z.
Ibrar Ahmed, M.
Perumalsamy, V.
Cao, C.
Yu, C.
Wijerathne, B.
Fleming, A.
Qiao, L.
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Advisors
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Journal article
Citation
Chemical Engineering Journal, 2024; 497:154610-1-154610-10
Statement of Responsibility
Yitong Cao, C.I. Sathish, Zhixuan Li, Muhammad Ibrar Ahmed, Vibin Perumalsamy, Chaojie Cao, Chenxi Yu, Binodhya Wijerathne, Adrew Fleming, Liang Qiao, Shaobin Wang, Jiabao Yi
Conference Name
Abstract
The escalation of microplastics/nanoplastics (MPs/NPs) contamination in aqueous systems has ignited considerable concern. Magnetic separation has emerged as a promising remedy for the removal of these pollutants, owing to its notable removal efficiency, cost-effectiveness, and environmentally friendly attributes. This study presents the utilization of ultra-thin magnetic Fe₃O₄ nanodiscs (NDs) for the adsorption and separation of MPs/ NPs. Investigations revealed that these NDs could effectively adsorb/remove MPs/NPs across a spectrum ranging from micro- to nano-scale, exhibiting a notable adsorption capacity of 188.4 mg g¯¹ . Mechanistically, MPs/NPs adsorption was driven by both electrostatic and magnetic forces originating from the vortex domain of NDs, which can be well described by pseudo-first-order and Sips models. Furthermore, the NDs exhibited outstanding reusability, maintaining over 90 % removal efficiency even after undergoing five cycles. This research introduces a cost-effective method for the separation of MPs/NPs, representing a significant stride in wastewater treatment methodologies.
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© 2024 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).