基于二肽的相选择胶凝剂对水中油污和有毒染料的清污性能

设计合成了一系列相选择胶凝剂(3a-3e),并通过¹H和¹³C核磁共振波谱和质谱对其结构进行了表征。 在有机溶剂和水的混合体系中对目标化合物进行相选择凝胶性能试验,结果表明化合物3c在粉末状态下表现出出色的相选择胶凝能力,在室温下可通过摇晃从油水两相体系中快速除去苯、甲苯、二甲苯和汽油。 另外,实验证明以3d-苄醇凝胶作为吸附剂可以实现有毒染料溶液的有效吸附,而且通过紫外-可见光谱实验可以对其清除效果进行量化。 操作简单和高效除污等优点表明这些二肽胶凝剂在污水纯化处理中具有广阔的应用前景。

Dipeptide-Based Phase-Selective Gelators for Removal of Oils and Toxic Dyes from Water

A series of phase-selective gelators (3a-3e) was synthesized and characterized by ¹H and ¹³C nuclear magnetic resonance spectroscopy and mass spectroscopy. The phase-selective activity assay was carried out in organic solvent and water mixture system and the results showed that compound 3c possessed high gelling abilities in the powder form for the removal of benzene, toluene, xylenes and petrol from their biphasic mixtures with water via a shaking process at room temperature. In addition, the efficient purification of toxic dye solutions has been realized by using 3d-benzyl alcohol gel as the adsorbent. Ultraviolet-visible spectroscopy provides the quantification means for the estimation of the purification efficacy. The simple operation and high removal efficiency of the organic solvents from water indicate the promising applicability of these dipeptide gelators in water purification.