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Recent Advances in the Aggregation Behavior of Nanoplastics in Aquatic Systems
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This review examines recent advances in understanding nanoplastic aggregation behavior in aquatic systems, focusing on how polymer surface modification and the use of novel surfactants can be designed to promote aggregation of nanoplastics from the environment. The review distinguishes this approach from conventional surfactant use aimed at dispersing insoluble compounds.
This short review aims to critically discuss the recent advances in supramolecular chemistry to achieve the aggregation of nanoplastics in aquatic systems. Polymer modification provides a vital tool for designing novel and ad hoc synthesized surfactants with properties tuned for some specific applications (e.g., stimuli-responsive nanomaterial, conducting polymers), mainly to aggregate other polymers from the environment. Far from the typical use of surfactants, which ease the dispersion of insoluble molecules in water media or aid solubilization of insoluble molecules on local media, in this case, nanoarchitectonics serve researchers to design surfactants with a focus on the capture of nanoplastics from the environment. Additionally, monovalent and divalent salt additions aided NPs in coagulating in the aquatic systems. Finally, the latest research on NPs' removal efficiency on wastewater treatment plant is reviewed to summarize the advances.
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