The superhydrophobic sponge decorated with Ni-Co double layered oxides with thiol modification for continuous oil/water separation

作     者：Xiaodong Yang Na Yang Ziqiang Gong Feifei Peng Bin Jiang Yongli Sun Luhong Zhang Xiaodong Yang;Na Yang;Ziqiang Gong;Feifei Peng;Bin Jiang;Yongli Sun;Luhong Zhang

作者机构：School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2023年第54卷第2期

页      面：296-305页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the financial support from National Key Research & Development Program of China (2017B0602702) 

主　　题：Superhydrophobic sponge Ni-Co double layered oxides Thiol modification Oil absorption Oil/water separation 

摘      要：In this paper, the superhydrophobic polyurethane sponge(SS-PU) was facilely fabricated by etching with Jones reagent to bind the nanoparticles of Ni-Co double layered oxides(LDOs) on the surface, and following modification with n-dodecyl mercaptan(DDT). This method provides a new strategy to fabricate superhydrophobic PU sponge with a water contact angle of 157° for absorbing oil with low cost and in large scale. It exhibits the strong absorption capacity and highly selective characteristic for various kinds of oils which can be recycled by simple squeezing. Besides, the as-prepared sponge can deal with the floating and underwater oils, indicating its application value in handling oil spills and domestic oily wastewater. The good self-cleaning ability shows the potential to clear the pollutants due to the ultralow adhesion to water. Especially, the most important point is that the superhydrophobic sponge can continuously and effectively separate the oil/water mixture against the condition of turbulent disturbance by using our designed device system, which exhibit its good superhydrophobicity, strong ***, the SS-PU still maintained stable absorption performance after 150 cycle tests without losing capacity obviously, showing excellent durability in long-term operation and significant potential as an efficient absorbent in large-scale dispose of oily water.