화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.37, No.11, 2054-2063, November, 2020
DOI10.1007/s11814-020-0585-3  Export Citation
Superwetting TiO2-decorated single-walled carbon nanotube composite membrane for highly efficient oil-in-water emulsion separation
Yahong Sun, Ruiguang Zhao1, Quanyong Wang2, Yuanyuan Zheng, Gongrang Li3, Dejun Sun1, Tao Wu1, †, and Yujiang Li†
  • Shandong Provincial Research Center for Water Pollution Control, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, P. R. China
  • 1Key Laboratory of Colloid and Interface Science of Education Ministry, Shandong University, Jinan, 250100, P. R. China
  • 2China Urban Construction Design & Research Institute Co. LTD. Jinan, 250101, P. R. China
  • 3Drilling Technology Research Institute, Shengli Petroleum Engineering Corporation Limited of SINOPEC, Dongying, 257017, P. R. China
E-mail:,
With the advantages of one-dimensional hollow structure, high porosity and prominent mechanical strength, single-walled carbon nanotubes (SWCNTs) have been extensively utilized to improve conventional filtration membranes for oil/water separation. Their intrinsic hydrophobicity, however, adversely affects the anti-fouling performance of the SWCNT membrane. Herein, a super-hydrophilic and underwater super-oleophobic hierarchical modified membrane with enhanced permeability and anti-fouling property was fabricated using the vacuum-assisted filtration technique by synergistically assembling SWCNTs and titanium dioxide (TiO2) nanoparticles on a cellulose acetate membrane. Highly dispersed SWCNTs were obtained by carboxylating treatment of agglomerate SWCNTs. The controlled stacking of SWCNTs fibers and a controllable amount of TiO2 rendered a modified membrane with high porosity and hierarchical structure, leading to an ultrahigh water flux up to 4,777.07 L·m-2·h-1, and excellent separation performance with efficiency greater than 99.47%. Most importantly, the membrane exhibited excellent anti-fouling ability during ten cycles with the aid of the super-wetting property of TiO2 nanoparticles. The results indicated that coating TiO2 nanoparticles on SWCNTs modified the surface topography of the obtained SWCNT/TiO2 membrane, which improved hydrophilicity, permeability and anti-fouling property, manifesting attractive potential applications in oil/water separation.
Keywords:Oil-in-water Emulsions;Super-hydrophilic;Underwater Super-oleophobic;SWCNT/TiO2 Membranes;SWCNT Membrane
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