Fu Bo, Yang Qiqi, Yang Fan
College of Chemical Engineering, Jiangsu Key Lab for the Chemistry & Utilization of Agricultural and Forest Biomass, Nanjing Forestry University, Nanjing 210037, China.
School of Management Science and Engineering, Nanjing University of Finance and Economics, Nanjing, Jiangsu 210023, China.
ACS Omega. 2020 Mar 31;5(14):8181-8187. doi: 10.1021/acsomega.0c00440. eCollection 2020 Apr 14.
Hybrid cellulose/,'-methylene bisacrylamide/graphene oxide (GO) aerogels with high flexibility and underwater oleophobicity were fabricated via the NaOH/urea solvent system. The as-prepared aerogels demonstrated low density, high porosity, and good flexibility. Underwater oleophobicity is attributed to the abundant hydrophilic groups in the aerogel skeleton, rough surface, and homogeneous distribution of GO. The samples were shaped into the membrane and filtered for oil/water separation by gravity. The separation efficiency over membrane-shaped CG was 99.8% with a permeate flux of 22,900 L/(m·h). Moreover, excellent reusability and durability were observed under long-term tests and corrosive conditions.
通过NaOH/尿素溶剂体系制备了具有高柔韧性和水下疏油性的纤维素/-亚甲基双丙烯酰胺/氧化石墨烯（GO）复合气凝胶。所制备的气凝胶具有低密度、高孔隙率和良好的柔韧性。水下疏油性归因于气凝胶骨架中丰富的亲水基团、粗糙的表面以及GO的均匀分布。将样品制成膜并通过重力进行油/水分离过滤。膜状CG的分离效率为99.8%，渗透通量为22900 L/(m·h)。此外，在长期测试和腐蚀性条件下观察到了优异的可重复使用性和耐久性。
