One-pot synthesis of nitrogen-rich aminal- and triazine-based hierarchical porous organic polymers with highly efficient iodine adsorption

Cheng, Liang; Xia, Miao; Zhang, Manxia; Yuan, Kuanyu; Hu, Fangyuan; Yu, Guipeng; Jian, Xigao

doi:10.1016/j.polymer.2020.122401

Cited by 37 publications

(24 citation statements)

References 43 publications

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“…PAN-NA is hyper-cross-linked, as evidenced by its total insolubility in water and many widely used organic solvents, including dimethyl sulfoxide, dichloromethane, tetrahydrofuran, and methanol. This feature allows it to be stable and, thus, to resist a wide range of organic solvent environments [ 9 ].…”

Section: Resultsmentioning

confidence: 99%

“…The current study found that PAN-NA is constructed very effectively with excellent yield and exhibited good chemical and thermal stability. By comparing our PSD result with analogs’ polyaminal with benzene moiety, we observed that PAN-NA has a smaller pore size than the benzyl polymer, which may be due to the fact that naphthalene groups occupy extra network space than benzene groups [ 2 , 9 , 13 , 27 ].…”

Section: Resultsmentioning

confidence: 99%

“…Generally, the interaction between the amine and aldehyde group yields an imine linkage (–C=N–). However, when the amine group is bonded with a strong electron releasing group, the enhanced basicity enables it to interact with the developed imine bond, resulting in the formation of a stable aminal linkage (–NH–C–NH–) [ 9 ]. The synthesis of PANs has been realized through many efforts and synthetic strategies.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Naphthalene-Based Polyaminal-Linked Porous Polymers for Highly Effective Uptake of CO2 and Heavy Metals

et al. 2022

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Studying the effect of functional groups on the porosity structure and adsorption efficiency of polymer materials is becoming increasingly interesting. In this work, a novel porous polyaminal-linked polymer, based on naphthalene and melamine (PAN-NA) building blocks, was successfully synthesized by a one-pot polycondensation method, and used as an adsorbent for both CO2 and heavy metals. Fourier transform infrared spectroscopy, solid-state 13 C NMR, powder X-ray diffraction, and thermogravimetry were used to characterize the prepared polymer. The porous material structure was established by field-emission scanning electron microscope and N2 adsorption–desorption methods at 77 K. The polymer exhibited excellent uptake of CO2, 133 mg/g at 273 K and 1 bar. In addition, the adsorption behavior of PAN-NA for different metal cations, including Pb(II), Cr(III), Cu(II), Cd(II), Ni(II), and Ba(II), was investigated; a significant adsorption selectivity toward the Pb(II) cation was detected. The influence of pH, adsorbent dose, initial concentrations, and contact time was also assessed. Our results prove that the introduction of naphthalene in the polymer network improves the porosity and, thus, CO2 adsorption, as well as the adsorption of heavy metals.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis of Naphthalene-Based Polyaminal-Linked Porous Polymers for Highly Effective Uptake of CO2 and Heavy Metals

et al. 2022

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“…The treatment of radioactive iodine includes ion exchange, [2] chemical precipitation, [3] membrane separation, [4] adsorption, [5] and other techniques. The capture of radioactive iodine by solid adsorbents has many advantages due to its simplicity, reliability, and low operating cost [6] . Therefore, various adsorbents, such as silver zeolite, [7] activated carbon, [8] mesoporous silicon, [9] and molecular sieve, [10] have been employed to capture iodine.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Iodine on Adamantane‐Based Covalent Organic Frameworks

Wei

et al. 2021

ChemistrySelect

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Radioactive iodine is severely hazardous to human health and the environment because of its high specific activity and environmental mobility. In this article, three covalent organic frameworks (COFs) (named as DbTd‐COF, DpTd‐COF, and DaTd‐COF) were prepared for the removal of iodine in both gas and solution states. The COFs were obtained by the solvothermal reaction of 1,3,5,7‐tetrakis (4‐formylphenyl) adamantane (TFPA) with benzidine, 2,5‐diaminopyridine, and p‐phenylenediamine, respectively. The obtained samples were characterized by SEM, FT‐IR, TGA, and nitrogen adsorption‐desorption analysis. The rigid linker of phenzyl chains helps to improve the stability of the polymer. DbTd‐COF and DaTd‐COF show excellent thermomechanical stability with a decomposition temperature of over 400 °C. DbTd‐COF and DaTd‐COF show good uptake capacities of 4.93 and 4.48 g g−1 for iodine vapor capture, respectively. DpTd‐COF shows a slightly smaller iodine uptake of 3.43 g g−1. XPS results indicated that iodine was captured in the form of its polyiodide anions. A better recyclability can be obtained after four cycle runs. In addition, DaTd‐COF shows good removal of iodine (concentration: 500 mg L−1) from cyclohexane solution with an adsorption capacity of 666.79 mg g−1.

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“…Organic porous polymers (POPs) have shown many advantages in photoelectric, energy storage, catalysis, gas storage and separation due to their high specific surface area, permanently tunable porosity and special pore environment 8–10 . Among them, conjugated microporous polymers (CMPs) are usually formed by the interconnection of multiple carbon–carbon bonds or aromatic rings, which generally have larger conjugated structure and excellent thermal and chemical stability 11–14 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of thiophene‐based conjugated microporous polymers for high iodine and carbon dioxide capture

Wang

Xie

et al. 2021

Polymers for Advanced Techs

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Two new thiophene-based conjugated microporous polymers (BTCMP-1 and BTCMP-2) were synthesized by cross-coupling polycondensation reaction of dithiophene derivatives, 1,4-phenylenediboronic acid and 1,2,4,5-tetrafluorobenzene. BTCMP-1 and BTCMP-2 display good physicochemical stability and outstanding CO 2 adsorption capacity (648 and 289 mg/g at 50 bar and 318 K, respectively). In addition, BTCMP-1 and BTCMP-2 exhibit high iodine adsorption of 480 and 284 wt%, respectively.BTCMP-1 has relatively loose accumulation and good porosity, which leads to higher iodine adsorption value of BTCMP-1 than that of BTCMP-2. The obtained thiophenebased conjugated microporous polymers are ideal materials for iodine capture and carbon dioxide capture.

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One-pot synthesis of nitrogen-rich aminal- and triazine-based hierarchical porous organic polymers with highly efficient iodine adsorption

Cited by 37 publications

References 43 publications

Synthesis of Naphthalene-Based Polyaminal-Linked Porous Polymers for Highly Effective Uptake of CO2 and Heavy Metals

Synthesis of Naphthalene-Based Polyaminal-Linked Porous Polymers for Highly Effective Uptake of CO2 and Heavy Metals

Adsorption of Iodine on Adamantane‐Based Covalent Organic Frameworks

Synthesis of thiophene‐based conjugated microporous polymers for high iodine and carbon dioxide capture

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