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Green synthesis of magnetic azo-linked porous organic polymers with recyclable properties for enhanced Bisphenol-A adsorption from aqueous solutions
Environmental Research ( IF 7.7 ) Pub Date : 2024-02-05 , DOI: 10.1016/j.envres.2024.118427 Yuqi Zhuang 1 , Sinuo Li 2 , Eldon R Rene 3 , Shuoyu Dong 1 , Weifang Ma 1
Environmental Research ( IF 7.7 ) Pub Date : 2024-02-05 , DOI: 10.1016/j.envres.2024.118427 Yuqi Zhuang 1 , Sinuo Li 2 , Eldon R Rene 3 , Shuoyu Dong 1 , Weifang Ma 1
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Porous organic polymers (POPs) present superior adsorption performance to steroid endocrine disruptors. However, the effective recovery and high cost have been a big limitation for their large-scale applications. Herein, magnetic azo-linked porous polymers (FeO@SiO/ALP-p) were designed and prepared in a green synthesis approach using low-price materials from phloroglucinol and pararosaniline via a diazo-coupling reaction under standard temperature and pressure conditions, which embedded with FeO@SiO nanoparticles to form three-dimensional interlayer network structure with flexible-rigid interweaving. The saturated adsorption capacity to bisphenol-A (BPA) was 485.09 mg/g at 298 K, which increased by 1.4 times compared with ALP-p of relatively smaller mass density. This enhanced adsorption was ascribed to increment from surface adsorption and pore filling with 2.3 times of specific surface area and 2.6 times of pore volume, although the total organic functional groups decreased with FeO@SiO amendment. Also, the adsorption rate increased by about 1.1 and 1.5-fold due to enhancement in the initial stage of surface adsorption and subsequent stage pore diffusion, respectively. Moreover, this adsorbent could be used in broad pH (3.0–7.0) and salinity adaptability (<0.5 mol/L). The loss of adsorption capacity and magnetic recovery were lower than 1.1% and 0.8% in each operation cycle because of the flexible-rigid interweave This excellent performance was contributed by synergistic effects from physisorption and chemisorption, such as pore filling, electrostatic attraction, π–π stacking, hydrogen bonding, and hydrophobic interaction. This study offered a cost-effective, high-performing, and ecologically friendly material along with a green preparation method.
中文翻译：
具有可回收特性的磁性偶氮连接多孔有机聚合物的绿色合成，用于增强水溶液中双酚A的吸附
多孔有机聚合物（POP）对类固醇内分泌干扰物具有优异的吸附性能。然而，有效回收率和高昂的成本一直是其大规模应用的一大限制。本文采用绿色合成方法设计和制备了磁性偶氮连接多孔聚合物（FeO@SiO/ALP-p），使用廉价的间苯三酚和副玫瑰苯胺材料，在标准温度和压力条件下通过重氮偶联反应，其中嵌入与FeO@SiO纳米颗粒形成柔性-刚性交织的三维层间网络结构。 298 K时对双酚A（BPA）的饱和吸附容量为485.09 mg/g，比质量密度较小的ALP-p提高了1.4倍。这种增强的吸附归因于表面吸附和孔填充的增加，比表面积增加了 2.3 倍，孔体积增加了 2.6 倍，尽管 FeO@SiO 改性后总有机官能团减少。此外，由于表面吸附初始阶段和后续阶段孔扩散的增强，吸附率分别增加了约1.1倍和1.5倍。此外，该吸附剂具有广泛的pH值（3.0-7.0）和盐度适应性（<0.5 mol/L）。由于柔性与刚性的交织，每个运行周期的吸附容量损失和磁恢复率分别低于1.1%和0.8%。这种优异的性能得益于物理吸附和化学吸附的协同效应，如孔隙填充、静电引力、π- π堆积、氢键和疏水相互作用。这项研究提供了一种经济高效、高性能、生态友好的材料以及绿色制备方法。
更新日期：2024-02-05
中文翻译：
具有可回收特性的磁性偶氮连接多孔有机聚合物的绿色合成，用于增强水溶液中双酚A的吸附
多孔有机聚合物（POP）对类固醇内分泌干扰物具有优异的吸附性能。然而，有效回收率和高昂的成本一直是其大规模应用的一大限制。本文采用绿色合成方法设计和制备了磁性偶氮连接多孔聚合物（FeO@SiO/ALP-p），使用廉价的间苯三酚和副玫瑰苯胺材料，在标准温度和压力条件下通过重氮偶联反应，其中嵌入与FeO@SiO纳米颗粒形成柔性-刚性交织的三维层间网络结构。 298 K时对双酚A（BPA）的饱和吸附容量为485.09 mg/g，比质量密度较小的ALP-p提高了1.4倍。这种增强的吸附归因于表面吸附和孔填充的增加，比表面积增加了 2.3 倍，孔体积增加了 2.6 倍，尽管 FeO@SiO 改性后总有机官能团减少。此外，由于表面吸附初始阶段和后续阶段孔扩散的增强，吸附率分别增加了约1.1倍和1.5倍。此外，该吸附剂具有广泛的pH值（3.0-7.0）和盐度适应性（<0.5 mol/L）。由于柔性与刚性的交织，每个运行周期的吸附容量损失和磁恢复率分别低于1.1%和0.8%。这种优异的性能得益于物理吸附和化学吸附的协同效应，如孔隙填充、静电引力、π- π堆积、氢键和疏水相互作用。这项研究提供了一种经济高效、高性能、生态友好的材料以及绿色制备方法。
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