An indole-based porous organic polymer (PTIM) with antibacterial activity was prepared by Friedel-Crafts alkylation and supercritical drying from the self-made tri(1H-indol-3-yl)methane (TIM). The adsorption of 2,4,6-trinitrotoluene (TNT) by PTIM involved physisorption followed by chemisorption, and the mechanism was verified by theoretical simulation and experiment. The physisorption and chemisorption between PTIM and TNT as well as the suitable three-dimensional space size of cross-linked network in PTIM enabled PTIM to have an unprecedented adsorption capacity for TNT (399.2 mg/g). Meanwhile, the removal efficiency of PTIM for TNT was also very high, and it could reach more than 85% of the maximum adsorption capacity after only 1 h of adsorption. Furthermore, the adsorption capacity of PTIM to TNT in actual water samples was slightly less than that in the laboratory, while the adsorption equilibrium time (4 h) was much shorter than the laboratory data (13.75 h). As a result, PTIM could not only achieve primary purification of TNT wastewater from high concentration to low concentration, but also advanced purification from low concentration to standard discharge concentration. In addition, PTIM possessed excellent recycling performance, and the maximum adsorption capacity was still 97% of the initial capacity after five adsorption-desorption cycles Unexpectedly, PTIM also had good antibacterial activity, preventing bacteria from adhering to or covering the pores, and ensuring excellent adsorption capacity and recycling performance. These results showed that PTIM was a promising TNT adsorbent.

中文翻译：

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合适三维空间尺寸的吲哚基多孔有机聚合物物理吸附和化学吸附吸附2,4,6-三硝基甲苯

以自制的三(1H-吲哚-3-基)甲烷(TIM)为原料，通过Friedel-Crafts烷基化和超临界干燥制备了具有抗菌活性的吲哚基多孔有机聚合物(PTIM)。 PTIM对2,4,6-三硝基甲苯（TNT）的吸附经历了物理吸附和化学吸附，并通过理论模拟和实验验证了其机理。 PTIM与TNT之间的物理吸附和化学吸附以及PTIM中合适的交联网络三维空间尺寸使得PTIM对TNT具有前所未有的吸附能力（399.2 mg/g）。同时，PTIM对TNT的去除效率也非常高，仅吸附1 h即可达到最大吸附量的85%以上。此外，实际水样中PTIM对TNT的吸附量略小于实验室数据，而吸附平衡时间（4 h）远短于实验室数据（13.75 h）。由此，PTIM不仅可以实现TNT废水从高浓度到低浓度的初级净化，还可以实现从低浓度到标准排放浓度的高级净化。此外，PTIM具有优异的回收性能，经过5次吸附-脱附循环后，最大吸附容量仍为初始容量的97%。出乎意料的是，PTIM还具有良好的抗菌活性，可防止细菌粘附或覆盖毛孔，保证优异的抗菌性能。吸附能力和回收性能。这些结果表明 PTIM 是一种有前途的 TNT 吸附剂。