State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510640, China.
State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510640, China.
Carbohydr Polym. 2023 Jul 15;312:120794. doi: 10.1016/j.carbpol.2023.120794. Epub 2023 Mar 9.
Separating films with both high efficiency and large flux are desperately needed to meet the rising demand for the treatment of oily wastewater, while traditional oil/water separation papers with high separation efficiency usually suffered from low flux due to the unsuitable size of filtration pores. Herein, we report a bio-based porous, superhydrophobic, and antimicrobial hybrid cellulose paper with tunable porous structures for high flux oil/water separation. The size of pores in the hybrid paper can be tuned by both physical supports provided by the chitosan fibers and the chemical shielding supplied by the hydrophobic modification. The hybrid paper with increased porosity (20.73 μm; 35.15 %) and excellent antibacterial properties can efficiently separate a wide range of oil/water mixtures, solely by gravity, with outstanding flux (maximum of 23,692.69 L m h), tiny oil interception, and high efficiency of over 99 %. This work provides new sights in the development of durable and low-cost functional papers for rapid and efficient oil/water separation.
为满足日益增长的含油污水处理需求，人们迫切需要高效、大通量的油水分离膜，但传统的高效油水分离纸往往由于过滤孔尺寸不合适而通量较低。在此，我们报道了一种基于生物的多孔、超疏水和抗菌混合纤维素纸，具有可调的多孔结构，可用于高通量的油水分离。通过壳聚糖纤维提供的物理支撑和疏水性修饰提供的化学屏蔽，可以调节混合纸中孔的尺寸。具有增加的孔隙率（20.73 μm；35.15%）和出色的抗菌性能的混合纸可以通过重力高效分离各种油/水混合物，通量极高（最高可达 23,692.69 L m h），油截留量小，效率超过 99%。这项工作为快速高效的油水分离提供了耐用且低成本的功能性纸张的新方向。
