A cost‐effective crosslinked β‐cyclodextrin polymer for the rapid and efficient removal of micropollutants from wastewater

Yang, Changan; Huang, He; Ji, Tuo; Kesheng, Zhang; Yuan, LeQun; Zhou, Congshan; Tang, Kewen; Yi, Jongheop; Chen, Xiaobo

doi:10.1002/pi.5771

Cited by 19 publications

(19 citation statements)

References 51 publications

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“…Another strategy that takes advantage of the versatile properties of CDs is based on the polymerization or copolymerization of the CDs by using crosslinkers and other grafting agents [9,[24][25][26][27][28][29][30][31][32][33][34][35]. Furthermore, the alkylation, hydroxyalkylation, and carboxymethylation of natural CDs help broaden the spectrum of guest molecules that can be effectively bound and, thus, the variety of pollutants to be removed [36,37].…”

Section: Cyclodextrin-based Polymers In Pollutant Removalmentioning

confidence: 99%

“…The existence of two reactive groups in EPI allows its bivalent binding to cyclodextrins, generating hydrophilic polymeric networks (hydrogels) with multiple CD molecules linked by repeating glyceryl moieties [24,25,28,35,[38][39][40][41][42][43][44][45]. These materials display high adsorption capability, are efficient in the removal of water contaminants present at trace levels, and show relatively fast kinetics [9,25,26,29,30,33,[46][47][48][49][50][51][52].…”

Section: Cyclodextrin-based Polymers In Pollutant Removalmentioning

confidence: 99%

“…Based on the high ability of CDs to interact with dyes via hydrophobic interactions, the polymerization of CDs is a logical way to synthesize highly efficient adsorbents. Among the different possibilities, the use of epichlorohydrin (EPI) or 4,4 -bis(chloromethyl)biphenyl as a crosslinker is the most common route [9,18].…”

Section: Polymersmentioning

confidence: 99%

“…Extensive research has been performed to develop new nanotechnologies for remediating water pollution by inorganic and organic contaminants [3]. These include advanced materials, such as those of a polymeric nature, which have been explored with great success for remediation purposes at different functional scales [4][5][6][7][8][9][10]. The most recent contributions have emphasized the use of nanobiomaterials to improve the detection, capture, and degradation of emergent and persistent contaminants [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Cyclodextrin Polymers and Cyclodextrin-Containing Polysaccharides for Water Remediation

et al. 2021

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Chemical pollution of water has raised great concerns among citizens, lawmakers, and nearly all manufacturing industries. As the legislation addressing liquid effluents becomes more stringent, water companies are increasingly scrutinized for their environmental performance. In this context, emergent contaminants represent a major challenge, and the remediation of water bodies and wastewater demands alternative sorbent materials. One of the most promising adsorbing materials for micropolluted water environments involves cyclodextrin (CD) polymers and cyclodextrin-containing polysaccharides. Although cyclodextrins are water-soluble and, thus, unusable as adsorbents in aqueous media, they can be feasibly polymerized by using different crosslinkers such as epichlorohydrin, polycarboxylic acids, and glutaraldehyde. Likewise, with those coupling agents or after substituting hydroxyl groups with more reactive moieties, cyclodextrin units can be covalently attached to a pre-existing polysaccharide. In this direction, the functionalization of chitosan, cellulose, carboxymethyl cellulose, and other carbohydrate polymers with CDs is vastly found in the literature. For the system containing CDs to be used for remediation purposes, there are benefits from a synergy that arises from (i) the ability of CD units to interact selectively with a broad spectrum of molecules, forming inclusion complexes and higher-order supramolecular assemblies, (ii) the functional groups of the crosslinker comonomers, (iii) the three-dimensional structure of the crosslinked network, and/or (iv) the intrinsic characteristics of the polysaccharide backbone. In view of the most recent contributions regarding CD-based copolymers and CD-containing polysaccharides, this review discusses their performance as adsorbents in micropolluted water environments, as well as their interaction patterns, addressing the influence of their structural and physicochemical properties and their functionalization.

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Section: Cyclodextrin-based Polymers In Pollutant Removalmentioning

confidence: 99%

Section: Cyclodextrin-based Polymers In Pollutant Removalmentioning

confidence: 99%

Section: Polymersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cyclodextrin Polymers and Cyclodextrin-Containing Polysaccharides for Water Remediation

et al. 2021

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“…The release is usually relatively very slow since the polymer network functionalized around the βCD cavity hampers the diffusion of entrapped guest molecules, thus promoting slower release kinetics 42 . The biodegradability of βCD polymers makes them candidates for use in the remediation of micropolluted water environments and ultrafast water treatment [43][44] . Combining βCDs with nanocellulose is highly beneficial for drug delivery due to the observed synergy between the two materials for excellent biocompatibility, low cytotoxicity, biodegradability, efficient polymerization, and versatile functionalization 33 .…”

Section: Introductionmentioning

confidence: 99%

pH-responsive polymer-based biomacromolecule nanosponges as biodegradable carriers for DOX delivery

Nia

Ashkar

Munguia-Lopez

et al. 2021

Preprint

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Cellulose is the most abundant renewable biomaterial on earth and beta-cyclodextrin (BCD) is among the most commonly used biocompatible drug encapsulation agents. Combining these bio-organic materials is a very powerful approach to greatly enhance the bioavailability of many drugs. These systems also allow for optimal selective drug release profiles, high biocompatibility, as well as “green nanomedicine” approaches that are eco-friendly in their synthesis and have minimal ecological toxicity. herein, we designed a new type of green and biopolymer-based nanosponge drug carriers which is polymerized by crosslinking beta-cyclodextrin ethylene diamine (βCD-EDA) with bifunctional hairy nanocellulose (BHNC). BHNC contains, besides aldehyde groups, carboxyl groups which can react with amino groups in βCD-EDA. Firstly, the crosslinker βCD-EDA was obtained through a simple nucleophilic substitution reaction between beta-cyclodextrin carbonyl imidazole (βCD-CI) and ethylene diamine (EDA). Secondly, BHNC was functionalized with the crosslinker βCD-EDA through a facile nucleophilic substitution crosslinking reaction of the BHNC activated carboxyl groups by the amines of βCD-EDA. We refer to the polymerized highly crosslinked BHNC-βCD-EDA network as BBE. Various ratios of βCD-EDA and BHNC were polymerized with the help of DMTMM as an activator, which resulted in different morphological shapes of BBE, and thus in different release profiles and pH-responsiveness. Unlike other polymer-based βCDs and nanosponges, these new types of crosslinked polymer were prepared in a green and safe solvent (water) and with very short reaction times and at low temperatures. Finally, the BBE polymers were tested as biocompatible nanocarriers for controllable doxorubicin (DOX) delivery. These hyper crosslinked polymers show a high capacity for loading DOX with extended drug release. Furthermore, breast cancer cell cultures show lower cell viability when DOX was loaded in various BBEs than control samples or DOX alone, indicating that our DOX-BBE drug delivery systems are better anticancer agents than DOX alone.

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

2021

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With the rapid development of materials science, porous organic polymers (POPs) have received remarkable attentions because of their unique properties such as the exceptionally high surface area and flexible molecular design. The ability to incorporate specific functions in a precise manner makes POPs promising platforms for a myriad of applications in molecular adsorption, separation, and catalysis. Therefore, many different types of POPs have been rationally designed and synthesized to expand the scope of advanced materials, endowing them with distinct structures and properties. Recently, supramolecular macrocycles with excellent host–guest complexation abilities are emerging as powerful crosslinkers for developing novel POPs with hierarchical structures and improved performance, which can be well‐organized at different spatial scales. Macrocycle‐based POPs could have unusual porous, adsorptive, and optical properties when compared to their nonmacrocycle‐incorporated counterparts. This cooperation provides valuable insights for the molecular‐level understanding of skeletal complexity and diversity. Here, the research advances of macrocycle‐based POPs are aptly summarized by showing their syntheses, properties, and applications in terms of separation, sensing, and catalysis. Finally, the current challenging issues in this exciting research field are delineated and a comprehensive outlook is offered for their future directions.

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A cost‐effective crosslinked β‐cyclodextrin polymer for the rapid and efficient removal of micropollutants from wastewater

Cited by 19 publications

References 51 publications

Cyclodextrin Polymers and Cyclodextrin-Containing Polysaccharides for Water Remediation

Cyclodextrin Polymers and Cyclodextrin-Containing Polysaccharides for Water Remediation

pH-responsive polymer-based biomacromolecule nanosponges as biodegradable carriers for DOX delivery

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

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