Rapid, Complete Removal of Organic Pollutants from Water by a SnS₂‐Modified Porous β‐Cyclodextrin‐Containing Polymer

Abstract

The discharge of organic pollutants poses a serious threat to public health and the environment. Developing new strategies and materials to remove organic pollutants from water efficiently and completely is of great importance. Herein, a SnS2‐modified porous β‐cyclodextrin‐containing polymer (SnS2@PCDP), which was derived by nucleophilic aromatic substitution of the hydroxyl groups of both β‐CD and SnS2−OH by tetrafluoroterephthalonitrile, was prepared for the rapid, complete removal of organic pollutants from water . The porous structure and well‐defined cavities of β‐CD endow SnS2@PCDP with a facile and high adsorption capacity, and the modification with SnS2 leads to simultaneous adsorption and photodegradation processes for the rapid and complete removal of organic pollutants. In addition, SnS2@PCDP can be regenerated several times using light irradiation with no loss in performance. Overall, the efficient removal performance and excellent reusability indicate that SnS2@PCDP has potential for practical applications in the efficient treatment of organic pollutants.

Macrocycle‐Based Porous Organic Polymers for Separation, Sensing, and Catalysis

“…Additionally, semiconductor photocatalyst SnS 2 has been successfully introduced into a porous β‐CD polymer by crosslinking SnS 2 ‐OH and β‐CD simultaneously with TFN, giving a multifunctional platform for complete removal of organic MPs from water (Figure 35c). [ 126 ] The well‐defined pores and β‐CD cavities endow the SnS 2 ‐modified materials with the ability of simultaneous adsorption and photodegradation of MPs from water. This work is expected to give new insight for the efficient treatment of organic pollutants.…”

“…organic MPs from water (Figure 35c). [126] The well-defined pores and β-CD cavities endow the SnS 2 -modified materials with the ability of simultaneous adsorption and photo degradation of MPs from water. This work is expected to give new insight for the efficient treatment of organic pollutants.…”

“…c) SnS 2 -decorated porous β-CD polymer derived S N Ar reaction. Reproduced with permission [126]. Copyright 2017, Wiley-VCH.…”

Facile Preparation of Hierarchically Porous Aromatic-cyclodextrin Polymers and Their Application for the Selective Adsorption of Cationic Dyes

“…The use of rigid crosslinking agents results in the formation of polymers with rapid adsorption rates when used as sorbents [45] because the rigid crosslinkers increase pore formation and, as a consequence, the speci c surface area of the sorbent [46,47]. Thus, CD-based polymers have attracted signi cant attention for use in separation processes and water-treatment applications owing to their porous structure, dispersibility, adsorption capacity, and selectivity [30,45,[48][49][50][51][52]. However, porous CD-based polymers have previously been prepared in organic phases, and the synthesis of these polymers in the aqueous phase is challenging.…”