A Calix[4]arene-crosslinked polymer for rapid adsorption of cationic dyes in water
作者： Liang Li , Haoliang Huang , Hanxue Li , Chuanxiang Liu , Xianguang Yan
DOI: 10.1016/J.MATCHEMPHYS.2021.124295
关键词: Benzene 、 Polymer 、 Cationic polymerization 、 Methylene blue 、 Adsorption 、 Toluidine 、 Chemical engineering 、 Portable water purification 、 Langmuir adsorption model 、 Chemistry
摘要: Abstract Dyes are indispensable in the textile industry and very difficult to degrade due presence of two or more benzene rings their structures. However, purification water resources is currently an urgent issue. In this study, a trichlorotriazine-derived calix[4]arene 1,3,5-tris(4-aminophenyl) were crosslinked generate polymer that can serve as highly efficient adsorbent for separating cationic dyes from water. This research provides evidence efficiency adsorb various organic micropollutants via batch adsorption experiments. particular, exhibited removal over 99.6% 99.4% methylene blue toluidine within 5 min, respectively. The kinetic results showed process could be described with quasi-second-order models, Langmuir isotherm models demonstrated maximum equilibrium capacity was reached 1806.82 2161.32 mg g−1, These observations suggest mainly dependent on electrostatic interactions, π−π hydrogen bonding between dyes. Furthermore, capacities maintained at high levels after five cycles. Its excellent capability recyclability make promising candidate potential applications purification.
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