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      Controllable preparation of core–shell magnetic covalent-organic framework nanospheres for efficient adsorption and removal of bisphenols in aqueous solution

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          Abstract

          A monomer-mediated in situ growth strategy has been developed for the controllable fabrication of magnetic COF core–shell nanostructures with great potential for wide applications.

          Abstract

          We herein report a monomer-mediated in situ growth strategy for the controllable construction of porous nanospheres with a magnetic core and a tunable COF shell. The composite exhibits high stability and excellent performance for the removal of a typical class of endocrine-disrupting chemicals, bisphenol chemicals, in aqueous solution.

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          Most cited references23

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          Core/shell nanoparticles: classes, properties, synthesis mechanisms, characterization, and applications.

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            Thioether-Based Fluorescent Covalent Organic Framework for Selective Detection and Facile Removal of Mercury(II).

            Heavy metal ions are highly toxic and widely spread as environmental pollutants. New strategies are being developed to simultaneously detect and remove these toxic ions. Herein, we take the intrinsic advantage of covalent organic frameworks (COFs) and develop fluorescent COFs for sensing applications. As a proof-of-concept, a thioether-functionalized COF material, COF-LZU8, was "bottom-up" integrated with multifunctionality for the selective detection and facile removal of mercury(II): the π-conjugated framework as the signal transducer, the evenly and densely distributed thioether groups as the Hg(2+) receptor, the regular pores facilitating the real-time detection and mass transfer, together with the robust COF structure for recycle use. The excellent sensing performance of COF-LZU8 was achieved in terms of high sensitivity, excellent selectivity, easy visibility, and real-time response. Meanwhile, the efficient removal of Hg(2+) from water and the recycling of COF-LZU8 offers the possibility for practical applications. In addition, X-ray photoelectron spectroscopy and solid-state NMR investigations verified the strong and selective interaction between Hg(2+) and the thioether groups of COF-LZU8. This research not only demonstrates the utilization of fluorescent COFs for both sensing and removal of metal ions but also highlights the facile construction of functionalized COFs for environmental applications.
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              Bisphenol A (BPA) in China: a review of sources, environmental levels, and potential human health impacts.

              Bisphenol A (BPA), identified as an endocrine disruptor, is an industrially important chemical that is used as a raw material in the manufacture of many products such as engineering plastics (e.g., epoxy resins/polycarbonate plastics), food cans (i.e., lacquer coatings), and dental composites/sealants. The demand and production capacity of BPA in China have grown rapidly. This trend will lead to much more BPA contamination in the environmental media and in the general population in China. This paper reviews the current literature concerning the pollution status of BPA in China (the mainland, Hong Kong, and Taiwan) and its potential impact on human health. Due to potential human health risks from long-term exposure to BPA, body burden of the contaminant should be monitored. Copyright © 2011 Elsevier Ltd. All rights reserved.
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                Author and article information

                Journal
                CHCOFS
                Chemical Communications
                Chem. Commun.
                Royal Society of Chemistry (RSC)
                1359-7345
                1364-548X
                2017
                2017
                : 53
                : 16
                : 2511-2514
                Affiliations
                [1 ]College of Chemistry
                [2 ]Research Center for Analytical Science
                [3 ]Tianjin Key Laboratory of Molecular Recognition and Biosensing
                [4 ]State Key Laboratory of Medicinal Chemical Biology
                [5 ]Nankai University
                Article
                10.1039/C6CC10188G
                0e615cee-65e6-4440-bac9-a64e27dc2158
                © 2017
                History

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