College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, Hunan, China.
Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong 510006, China.
Langmuir. 2020 Aug 11;36(31):9090-9098. doi: 10.1021/acs.langmuir.0c01101. Epub 2020 Aug 2.
Through a combinatorial screening of 35 possible phase-selective monopeptide-based organogelators readily made at low cost, we identified five of them with high gelling ability toward aprotic aromatic solvents in the powder form. The best of them (--) is able to instantly and phase-selectively gel benzene, toluene, and xylenes in the presence of water at room temperature at a gelator loading of 6% w/v. This enables the gelled aromatics to be separated by filtration and both aromatics and the gelling material to be recycled by distillation. We also identified as the best gelator for benzyl alcohol, and the corresponding organogel efficiently removes toxic dye molecules by 82-99% from their highly concentrated aqueous solutions. These efficient removals of toxic organic solvents and dyes from water suggest their promising applications in remediating contaminated water resources.
通过对 35 种可能的、成本低廉的、选择性单肽基主体化合物的组合筛选，我们在粉末状态下发现了其中 5 种对非质子芳香溶剂具有高凝胶能力的化合物。其中最好的一种（--）能够在室温下、在 6%w/v 的凝胶剂浓度下，瞬间且选择性地将苯、甲苯和二甲苯胶凝。这使得凝胶化芳烃可以通过过滤分离，芳烃和凝胶材料可以通过蒸馏回收。我们还发现是苄醇的最佳凝胶剂，相应的有机凝胶可以从高浓度的水溶液中高效去除 82-99%的有毒染料分子。这些从水中有效去除有毒有机溶剂和染料的方法表明，它们在修复受污染水资源方面具有广阔的应用前景。
