One-pot fabrication of lignin-based aromatic porous polymers for efficient removal of bisphenol AF from water
One-pot fabrication of lignin-based aromatic porous polymers for efficient removal of bisphenol AF from water
复制标题
一锅法制备木质素基芳香族多孔聚合物，有效去除水中的双酚 AF
DOI：
10.1016/j.ijbiomac.2021.01.215
复制
发表时间：
2021
影响因子：
8.2
通讯作者：
Hongbing Ji
中科院分区：
文献类型：
--
作者：
Luyan Sun;Kungang Chai;Liqin Zhou;Dankui Liao;Hongbing Ji
为了去除水溶液中的双酚AF（BPAF），分别以1，4-二氯二甲苯和4，4 ′-双（氯甲基）-1，1 ′-联苯为交联剂，采用一锅法制备了两种不同类型的木质素基芳香族多孔聚合物（LAPP-1和LAPP-2）。通过FTIR、XPS、SEM、TEM和N2吸附-脱附分析证实了LAPPs的成功合成。然后，进行了批量吸附实验，以研究吸附性能对BPAF。吸附过程符合准二级动力学模型和Freundlich等温模型，热力学研究表明吸附是一个自发的放热过程。值得注意的是，LAPPs在较宽的pH和离子强度范围内以及在回收过程中表现出良好的吸附性能。与LAPP-1相比，LAPP-2对BPAF的吸附能力更强，这与其孔隙率和芳环含量较高有关。实验和理论结果的综合分析表明，π-π相互作用和孔隙吸附可能共同驱动BPAF的吸附过程。考虑到所采用的简单制造方法和优异的BPAF吸附性能，LAPP为开发用于从水中去除BPAF的先进木质素基吸附剂提供了新的见解。
To remove the bisphenol AF (BPAF) from aqueous solution, two different types of lignin-based aromatic porous polymers (LAPP-1 and LAPP-2) were fabricated via one-pot crosslinking of lignin with 1,4-dichloroxylene and 4,4′-bis(chloromethyl)-1,1′-biphenyl, respectively. The successful synthesis of LAPPs was confirmed by FTIR and XPS, SEM, TEM and N2adsorption-desorption analysis. Then, batch adsorption experiments were conducted to investigate adsorption properties toward BPAF. Based on the results, the adsorption processes were in accordance with the pseudo-second-order kinetic model and the Freundlich isotherm model, and the thermodynamic studies showed that the adsorption was a spontaneous and exothermic process. It is remarkable that LAPPs exhibited good adsorption performance in wide ranges of pH and ionic strength as well as in recycling process. Notably, compared to LAPP-1, LAPP-2 exhibited higher adsorption capacity for BPAF, which can be ascribed to its higher porosity and content of aromatic ring. Moreover, the comprehensive analysis of experimental and theoretical results indicated that the π-π interactions and pore adsorption may jointly drive the uptake process of BPAF. Considering the simple fabrication method employed and excellent BPAF adsorption performance, LAPPs provided new insights into the development of advanced lignin-based adsorbents for removal of BPAF from water.