Superhydrophobic, mechanically flexible and recyclable reduced graphene oxide wrapped sponge for highly efficient oil/water separation

作     者：Lijuan Qiu Ruiyang Zhang Ying Zhang Chengjin Li Qian Zhang Ying Zhou 

作者机构：State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu 610500 China The Center of New Energy Materials and Technology School of Materials Science and Engineering Southwest Petroleum University Chengdu 610500 China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2018年第12卷第3期

页      面：390-399页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the Sichuan Provincial International Cooperation Project the Scientific Research Starting project of SWPU the Training funds for academic and technological leaders in Sichuan and the Innovative Research Team of Sichuan Province 

主　　题：superhydrophobicity mechanically flexibility water/oil separation reduced graphene oxide wrapped sponge 

摘      要：Water pollution has become an urgent issue for our modem society, and it is highly desirable to rapidly deal with the water pollution without secondary pollution. In this paper, we have prepared a reduced graphene oxide （RGO） wrapped sponge with superhydrophobicity and mechanically flexibility via a facile low-temperature thermal treatment method under a reducing atmosphere. The skeleton of this sponge is completely covered with RGO layers which are closely linked to the skeleton. This sponge has an abundant pore structure, high selectivity, good recyclability, low cost, and outstanding adsorption capacity for floating oil or heavy oil underwater. In addition, this sponge can maintain excellent adsorption performance for various oils and organic solvents over 50 cycles by squeezing, and exhibits extremely high separa- tion efficiencies, up to 6 × 10^6 and 3.6 × 10^6 L·m^-3.h^-1 in non-turbulent and turbulent water/oil systems, respec- tively. This superhydrophobic adsorbent with attractive properties may find various applications, especially in large-scale removal of organic contaminants and oil spill cleanup.