Simple and Ultrahigh Efficient Superhydrophilic Polydopamine-coated TiO_(2) Cotton for Oil-water Separation  

作　　者：Xin Zhong Zhiguang Guo 

机构地区：[1]Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials,Hubei University,Wuhan,430062,China [2]State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou,730000,China

出　　处：《Journal of Bionic Engineering》2023年第3期900-909,共10页仿生工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(no.51735013).

摘　　要：Oil–water mixing has brought many problems to a society, and it is of great significance to develop a simple, convenient, efficient, and durable separation material to solve the problem of oil–water mixing. In this paper, modified cottons were successfully prepared using polydopamine as the in situ mineralization site of TiO_(2) nanoparticles combined with synergistic crosslinking with KH550. A large number of hydrophilic groups endowed the cotton with superhydrophilic ability, which greatly shortened its water spreading time. The prepared modified cotton could be successfully separated from oil and water, and still had a separation efficiency of 99.999% after 50 cycles. In addition, after 24 h immersion in 1 M HCl, NaOH, and NaCl solutions and 50 abrasion experiments, the modified cotton showed excellent oil–water separation ability, and the separation efficiency was above 99.990%. Successfully provided a simple preparation method to prepare high-efficiency and clean cottons for oil–water separation.

关 键 词：Oil-water separation SUPERHYDROPHILICITY COTTON POLYDOPAMINE 

分 类 号：X703[环境科学与工程—环境工程]