A polycationic covalent organic framework: a robust adsorbent for anionic dye pollutants

Yu, Shang Bo; Lyu, Hao; Tian, Jia; Wang, Hui; Zhang, Dan Wei; Liu, Yi; Li, Zhan Ting

doi:10.1039/c6py00281a

Cited by 179 publications

(116 citation statements)

References 63 publications

(6 reference statements)

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“…Comprehensively, the strong adsorption capacity of pyrimidine‐linked ionic CMP, CMP‐PM‐Me , may be attributed to the formation of favorable soft base‐soft acid and hard base‐hard acid (Na + ) ion pairs which are caused by the exchange of dye anions as soft bases with I − anions as hard bases …”

Section: Resultsmentioning

confidence: 99%

“…Comprehensively,t he strong adsorption capacity of pyrimidine-linked ionic CMP, CMP-PM-Me,m ay be attributedt ot he formation of favorable soft base-soft acid and hard base-hard acid (Na + )i on pairs which are caused by the exchange of dye anionsa ss oft bases with I À anionsa sh ard bases. [38] To make further studies of the adsorptionm echanism for CR, the adsorption isotherms and relevant parameters can be obtained by fitting againstt he Langmuir [Eq. (2)] and Freundlich [Eq.…”

Section: Dye Adsorption Performancementioning

confidence: 99%

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Post‐cationic Modification of a Pyrimidine‐Based Conjugated Microporous Polymer for Enhancing the Removal Performance of Anionic Dyes in Water

Liu

Cui

Zhang

et al. 2018

Chemistry A European J

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Ionic porous organic polymers have attracted much attention due to their broad applications in catalysis, energy storage/conversion, proton conduction, etc. In this paper, an ionic porous organic polymer, CMP-PM-Me, was synthesized through post-synthetic modification of a pyrimidine-based conjugated microporous polymer, CMP-PM, which was constructed by the palladium catalyzed Sonogashira reaction of 1,3,5-triethynylbenzen and 2,5-dibromopyrimidine. These two polymers are porous with Brunauer-Emmett-Teller surface areas of 416 and 241 m g for CMP-PM and CMP-PM-Me, respectively. Due to the cationic framework, CMP-PM-Me exhibits a much faster and more efficient adsorption performance to anionic dyes such as Congo red (CR) and methyl orange (MO) than that of CMP-PM with a neutral framework. The uptakes for CR are 400.0 mg g for CMP-PM-Me and 344.8 mg g for CMP-PM, respectively. Furthermore, CMP-PM-Me could quickly and drastically separate anionic dyes from the binary mixed solution of anionic and nonanionic dyes within a short time. This work not only enriches the family of ionic organic porous polymers and widens their synthetic utility, but also demonstrates their applications in the adsorption and separation of anionic dyes in water.

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Section: Resultsmentioning

confidence: 99%

Section: Dye Adsorption Performancementioning

confidence: 99%

Post‐cationic Modification of a Pyrimidine‐Based Conjugated Microporous Polymer for Enhancing the Removal Performance of Anionic Dyes in Water

Liu

Cui

Zhang

et al. 2018

Chemistry A European J

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“…[3] Covalent organic frameworks (COFs), [6][7][8][9][10] crystallinep orousm aterials formed by the self-assembly of purely organic building blocks, have been explored for aw ide range of applications, such as optoelectronics, [11][12][13] gas storage, [14] and catalysis. [15][16][17][18][19][20][21][22] COFs have also shown promise as adsorbents for organic dyes, [23][24][25][26][27] mercury, [28,29] radionuclides, [30] and lanthanides, [31] as carriers for drug delivery, [32][33][34] and isolation of industriallyr elevant compounds. [35] Recently, we demonstrated that COFs can be used to efficientlyc apture marine toxin okadaic acid from seawater.…”

mentioning

confidence: 99%

Adsorption of Pharmaceutical Pollutants from Water Using Covalent Organic Frameworks

Mellah

Fernandes

Rodríguez³

et al. 2018

Chemistry A European J

120

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Capture of pharmaceutical pollutants from water was studied using a novel fluorine-bearing covalent organic framework TpBD-(CF ) , which showed ibuprofen adsorption capacity of 119 mg g at neutral pH. This value is further enhanced at pH 2, highlighting the potential of this class of materials to serve as adsorbents even under harsh conditions. The adsorbed pharmaceutical can be recovered from TpBD-(CF ) in high yield, offering the option of recycling both the adsorbent and the pharmaceutical. The high efficiency of ibuprofen capture as compared to other less lipophilic pharmaceuticals suggests that COFs can be pre-designed for selective capture of contaminants.

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“…Although various POPs for adsorbing MB have been reported, the POPs with their maximum MB adsorption value over 2500 mg g −1 are rare 32–38. Specially, it is still challenging to develop practical POPs to remove MB from other pollutant with high selectivity, reusability, and efficient adsorption in aqueous solution 39–45…”

Section: Introductionmentioning

confidence: 99%

Carboxylic Acid Enriched Porous Organic Polymer as a Platform for Highly Efficient Removal of Methylene Blue from Aqueous Solution

Yan

Chen

et al. 2020

Macro Chemistry & Physics

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To develop highly efficient organic dyes adsorbents are of great importance for environmental issues. In this work, a negatively charged porous organic polymer (POP) is synthesized by simple aromatic nucleophilic substitution (SNAr) and hydrolysis reaction. This polymer POP‐TFP‐COOH structure is confirmed by IR and 13C cross‐polarization/magic‐angle‐spinning nuclear magnetic resonance. Due to the existence of phenyl rings and carboxylic acid groups, POP‐TFP‐COOH displays excellent adsorption ability for the positive dye methylene blue (MB), with a maximum value of 2740 mg g−1. This porous polymer can be reused at least four times without obvious loss of its adsorption capacity.

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A polycationic covalent organic framework: a robust adsorbent for anionic dye pollutants

Abstract: A 2D polycationic covalent organic framework has been constructed, which exhibits a robust capability of adsorbing dye pollutants from water.

Cited by 179 publications

References 63 publications

Post‐cationic Modification of a Pyrimidine‐Based Conjugated Microporous Polymer for Enhancing the Removal Performance of Anionic Dyes in Water

Post‐cationic Modification of a Pyrimidine‐Based Conjugated Microporous Polymer for Enhancing the Removal Performance of Anionic Dyes in Water

Adsorption of Pharmaceutical Pollutants from Water Using Covalent Organic Frameworks

Carboxylic Acid Enriched Porous Organic Polymer as a Platform for Highly Efficient Removal of Methylene Blue from Aqueous Solution

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