Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science and Technology, Tianjin 300457, China.
Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science and Technology, Tianjin 300457, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
Carbohydr Polym. 2021 May 15;260:117790. doi: 10.1016/j.carbpol.2021.117790. Epub 2021 Feb 13.
A novel approach was introduced to prepare very low density, highly porous, economic, reusable, hydrophobic, and magnetic cellulose aerogels from hardwood dissolving pulp via a simple freeze-drying procedure. The aerogels showed outstanding adsorption efficiency for several oils and organic solvents and demonstrated excellent selectivity for absorbing oil from an oil/water mixture. Moreover, they were easily collected by an external magnet, indicating excellent recyclability and reusable for at least 10 cycles while still retaining supreme adsorption capacity (up to 181 g/g for silicone oil). This study proposes an economic and novel method for the large-scale preparation of hydrophobic and magnetic cellulose aerogels, making them a promising candidate for the efficient and sustainable cleaning of oils and chemical spills.
一种新方法被引入，通过简单的冷冻干燥程序，从硬木溶解浆制备极低密度、高多孔、经济、可重复使用、疏水和磁性纤维素气凝胶。气凝胶对几种油和有机溶剂表现出出色的吸附效率，并对从油水混合物中吸收油表现出优异的选择性。此外，它们可以很容易地被外部磁铁收集，表明其可回收性优异，可至少重复使用 10 次，同时仍保持超高的吸附能力（硅油可达 181 g/g）。本研究提出了一种经济且新颖的方法来大规模制备疏水和磁性纤维素气凝胶，使它们成为高效和可持续地清除油和化学泄漏物的有前途的候选材料。
