Construction of Superhydrophobic-Superoleophilic Filter Paper by Seed Growing Method and Its Application in Oil-water Separation
YANG Fusheng1, ZHANG Yan1, LIU Xiaobin1, CHEN Yongzhe1, YANG Wu2,3
1 College of Automotive Engineering, Lanzhou Institute of Technology, Lanzhou 730050, China; 2 College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China; 3 Ministry of Education,Key Laboratory of Ecological-environment-related Polymer Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
Abstract: In recent years, the leakage of crude oil and industrial organic solvents has seriously damaged the ecological environment where the orga-nisms live. It was urgent to purify the water polluted by oil and search for a fast and efficient oil-water separation material. In this paper, a la-yer of silver nanoparticles was assembled on the surface of filter paper by in-situ reduction method and seed growth method, its surface energy was reduced by grafting modification of dodecyl thiol and the superhydrophobic-superoleophilic filter paper with chemical corrosion resistance, thermal stability and excellent oil-water separation characteristics was successfully prepared. The superhydrophobic-superoleophilic filter paper was characterized by scanning electron microscope, X-ray diffractometer and contact angle tester. The results show the maximum contact angle of water droplet on the surface is 155°, rolling angle is less than 5°,the oil droplets can instantly through the filter paper, having high capacity of separation a variety of oil-water mixture, and oil-water separation efficiency is as high as 88%. Meanwhile,the oil which has been separated from water was analyzed by infrared spectrum, and there is no clear water peak was detected. So superhydrophobic-superoleophilic filter paper has a good application prospect in oil-water separation,because its preparation process was simple and the adhesion between silver nanometer and filter paper was strong.
杨福生, 张妍, 刘小斌, 陈永哲, 杨武. 种子生长法构筑超疏水-超亲油滤纸及其在油水分离中的应用[J]. 材料导报, 2020, 34(4): 4132-4136.
YANG Fusheng, ZHANG Yan, LIU Xiaobin, CHEN Yongzhe, YANG Wu. Construction of Superhydrophobic-Superoleophilic Filter Paper by Seed Growing Method and Its Application in Oil-water Separation. Materials Reports, 2020, 34(4): 4132-4136.
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