小柯机器人

Locking volatile organic molecules by subnanometer inorganic nanowire-based organogels
2022-07-03 11:20

清华大学Xun Wang研究团队取得一项新突破。他们制备了一种由亚纳米无机纳米线组成的有机凝胶,并用它锁住挥发性有机分子。相关论文于2022年7月1日发表在《科学》杂志上。

通过简单的室温反应,研究人员制备了由碱土金属阳离子桥接的多酸纳米团簇组成的亚纳米线。这些纳米线可以形成三维网络,能以低至0.53%的纳米线质量分数高效捕获10多种挥发性有机液体,并形成一系列独立的、弹性的、稳定的有机凝胶。研究人员制备了可以封装千克级有机液体的凝胶。通过蒸馏和离心去除凝胶中的溶剂,这些纳米线可以循环使用10次以上。该方法可用于有机液体的有效捕集和回收。

据了解,挥发性有机分子之间的分子间作用力通常比水弱,使它们一般很难被吸收。

附:英文原文

Title: Locking volatile organic molecules by subnanometer inorganic nanowire-based organogels

Author: Simin Zhang, Wenxiong Shi, Xun Wang

Issue&Volume: 2022-07-01

Abstract: The intermolecular forces among volatile organic molecules are usually weaker than water, making them more difficult to absorb. We prepared alkaline earth cations–bridged polyoxometalate nanoclusters subnanometer nanowires through a facile room-temperature reaction. The nanowires can form three-dimensional networks, trapping more than 10 kinds of volatile organic liquids effectively with the mass fraction of nanowires as low as 0.53%. A series of freestanding, elastic, and stable organogels were obtained. We prepared gels that encapsulate organic liquids at the kilogram scale. Through removing solvents in gels by means of distillation and centrifugation, the nanowires can be recycled more than 10 times. This method could be applied to the effective trapping and recovery of organic liquids.

DOI: abm7574

Source: https://www.science.org/doi/10.1126/science.abm7574

 

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