科研之友
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摘要
An efficient sorbitol-based phase-selective organogelator has been synthesized by an one-step reaction between sorbitol and benzaldehyde with high yields up to 90%. The organogelator could gelate a wide range of oils with minimum gelation concentration ranging from 0.04 to 0.10 g/mL within 17 min. Besides, the self-assembly mode of the organogelator in the oil phase was presented. The organogelator could self-assemble in the oil phase through the hydrogen bonding and the pi-pi stacking interactions to form three-dimensional networks. The organogelator showed better gelation properties when treated crude oil than other oils. Namely, a lower gelation concentration and a shorter gelling time were observed, while higher thermal stability and mechanical strength of the final crude oil gel were obtained. More importantly, the organogelator could be directly applied in a powder form to selectively gelate crude oil from oil-water mixtures within 10 min at ambient temperature without heating or adding carrier solvents. Inexpensive, simple-synthesis, high-yield and relatively simple operation performances of the organogelators indicate their potential and promising applications to remove oil spills in real life, especially for marine crude oil spills.
- 出版日期2019-2-10
- 单位天津大学
