使用含有动态共价键的全生物基表面活性剂制备响应pH的水中的油微乳液
Xu Yang1,2,3, Dangge Gao1,2,3, Bin Lyu1,2,3
1College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
Langmuir : the ACS journal of surfaces and colloids
|January 27, 2025
概括
一种新的生物基表面活性剂 (Ca-S) 有效地修复了受油污染的土壤. 这种响应pH的微乳液在酸性条件下具有低毒性和快速相分离.
科学领域:
- 绿色化学 绿色化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 开发可持续的表面活性剂对于环境修复至关重要.
- 生物基表面活性剂为传统合成表面活性剂提供了一个有希望的替代品.
- 响应pH值的材料对于受控释放和分离应用非常有价值.
研究的目的:
- 合成和表征一种新型的pH响应,完全基于生物的表面活性剂 (Ca-S).
- 用 Ca-S 制备和评估油在水 (O/W) 微乳液,用于污染土壤的修复.
- 评估Ca-S微乳液的细胞毒性和性能.
主要方法:
- 从可再生果仁,5-chloro-2-furanaldehyde和 taurine 中合成 Ca-S.
- 使用富里埃变换红外光谱学 (FTIR) 和1H核磁共振 (NMR) 的结构特征.
- 制备基于烯的O/W微乳液,并测试土壤修复效率,细胞毒性,界面张力和pH响应.
主要成果:
- 成功合成和表征了Ca-S表面活性剂.
- Ca-S微乳液表现出较低的界面张力和快速响应特征.
- 观察到最佳的pH响应,在5秒内在酸性介质 (pH < 4) 中快速和完全分离相位.
- 微乳液处理显著降低了土壤油含量,低于4%.
- 对A549细胞系而言,Ca-S的细胞毒性较低.
结论:
- 这种新型的pH响应生物基表面活性剂Ca-S对污染过油土壤的修复有效.
- 开发的微乳液提供高效,低能耗,环境温度补救,具有出色的pH触发分离.
- Ca-S微乳液显示出可持续环境应用的巨大潜力,特别是在土壤修复方面.
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