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Carboxylate Group-Based Phase-Selective Organogelators with a pH-Triggered Recyclable Property
Langmuir ( IF 3.7 ) Pub Date : 2022-07-26 , DOI: 10.1021/acs.langmuir.2c00957 Yang Yang 1 , Li Wang 2 , Xiaojiang Li 1 , Dan Liu 1 , Shanshan Dai 1 , Hongsheng Lu 1, 3
Langmuir ( IF 3.7 ) Pub Date : 2022-07-26 , DOI: 10.1021/acs.langmuir.2c00957 Yang Yang 1 , Li Wang 2 , Xiaojiang Li 1 , Dan Liu 1 , Shanshan Dai 1 , Hongsheng Lu 1, 3
Affiliation
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Phase-selective organogelators (PSOGs) have recently attracted more attention because of their advantages in handling oil spills and leaked organic solvents. However, it is difficult to separate and recover the organic phase and PSOGs from organic gels due to the strong interaction between them. Aiming to enhance the separation and recovery performance of the organic phase and PSOGs, we synthesized a series of pH-responsive PSOGs by using itaconic anhydride and fatty amines with carbon chain lengths of C12–C18. Here, PSOGs have an excellent gelation ability in that amounts of organic solvents and fuel oil can be solidified at a low concentration (<3 wt %). It is worth noting that these gels are stronger, which is more convenient for removal by a salvage operation. More importantly, compared with traditional organogelators, pH-responsive PSOGs can easily recover the organic phase and fuel oil with an adjustment of the pH without extraction or distillation. Because of the transformation between the hydrophilicity and hydrophobicity of PSOGs by pH stimulation, 83.15% PSOGs are recovered in three-cycle experiments. In addition, the recycled PSOGs can be used to realize the removal of the organic phase again. Herein, we find that pH-responsive PSOGs could be used as promising and sustainable materials for separating and recovering organic solvents/oils and PSOGs.
中文翻译：
具有 pH 触发可回收特性的基于羧酸盐基团的相选择性有机凝胶剂
相选择性有机凝胶剂 (PSOG) 最近因其在处理溢油和泄漏的有机溶剂方面的优势而引起了更多的关注。然而，由于它们之间的强相互作用，很难从有机凝胶中分离和回收有机相和 PSOG。为了提高有机相和 PSOG 的分离和回收性能，我们使用衣康酸酐和碳链长度为 C 12 -C 18的脂肪胺合成了一系列 pH 响应性 PSOG. 在此，PSOG 具有优异的凝胶化能力，因为有机溶剂和燃料油的量可以在低浓度（<3 wt%）下固化。值得注意的是，这些凝胶更坚固，更便于通过抢救操作去除。更重要的是，与传统的有机凝胶剂相比，pH 响应型 PSOG 无需萃取或蒸馏即可通过调节 pH 值轻松回收有机相和燃料油。由于pH刺激PSOGs的亲水性和疏水性发生了转变，在三循环实验中回收了83.15%的PSOGs。此外，回收的PSOGs可用于再次实现有机相的去除。在此处，
更新日期：2022-07-26
中文翻译：
具有 pH 触发可回收特性的基于羧酸盐基团的相选择性有机凝胶剂
相选择性有机凝胶剂 (PSOG) 最近因其在处理溢油和泄漏的有机溶剂方面的优势而引起了更多的关注。然而，由于它们之间的强相互作用，很难从有机凝胶中分离和回收有机相和 PSOG。为了提高有机相和 PSOG 的分离和回收性能，我们使用衣康酸酐和碳链长度为 C 12 -C 18的脂肪胺合成了一系列 pH 响应性 PSOG. 在此，PSOG 具有优异的凝胶化能力，因为有机溶剂和燃料油的量可以在低浓度（<3 wt%）下固化。值得注意的是，这些凝胶更坚固，更便于通过抢救操作去除。更重要的是，与传统的有机凝胶剂相比，pH 响应型 PSOG 无需萃取或蒸馏即可通过调节 pH 值轻松回收有机相和燃料油。由于pH刺激PSOGs的亲水性和疏水性发生了转变，在三循环实验中回收了83.15%的PSOGs。此外，回收的PSOGs可用于再次实现有机相的去除。在此处，
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