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Issue 44, 2019
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Amino-functionalized hypercrosslinked polymers for highly selective anionic dye removal and CO2/N2 separation

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Abstract

Recently, great improvements have been achieved in the fabrication of adsorbents. However, designing adsorbents with high adsorption capacity and superior selectivity still remains a big challenge. In the present study, a novel cost effective NH2-HCP adsorbent for toxic dyes and CO2/N2 separation was facilely synthesized through the one-step Friedel–Crafts alkylation reaction of m-phenylenediamine (MPD). The adsorption process under different adsorption parameters, namely, contact time and initial dye concentration were investigated in detail to explore the adsorption characteristics of the NH2-HCPs. Moreover, the experimental results demonstrated that the equilibrium adsorption isotherm and adsorption kinetics for anionic dye adsorption onto the NH2-HCPs fitted well with the Langmuir model and pseudo-second-order model, respectively. With a mesoporous structure and a high density of active amino groups, the amino-functionalized hypercrosslinked polymers (NH2-HCPs) not only showed an unprecedented adsorption capacity of 3290 mg g−1 for the anionic dye X-3B and almost no adsorption toward the cationic dye, but also possessed an excellent CO2/N2 selectivity of 122.

Graphical abstract: Amino-functionalized hypercrosslinked polymers for highly selective anionic dye removal and CO2/N2 separation

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Publication details

The article was received on 31 May 2019, accepted on 04 Oct 2019 and first published on 10 Oct 2019


Article type: Paper
DOI: 10.1039/C9NJ02847A
New J. Chem., 2019,43, 17267-17274

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    Amino-functionalized hypercrosslinked polymers for highly selective anionic dye removal and CO2/N2 separation

    P. Su, X. Zhang, Z. Xu, G. Zhang, C. Shen and Q. Meng, New J. Chem., 2019, 43, 17267
    DOI: 10.1039/C9NJ02847A

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