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Modification of poly(vinylidene fluoride) membranes with aluminum oxide nanowires and graphene oxide nanosheets for oil–water separation
Author(s) -
Guo Fanjin,
Zhang Chang,
Wang Qiaoying,
Hu Weijie,
Cao Jing,
Yao Jie,
Jiang Lingyan,
Wu Zhichao
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47493
Subject(s) - membrane , graphene , materials science , oxide , fluoride , chemical engineering , nanowire , polyvinylidene fluoride , intercalation (chemistry) , nanotechnology , composite material , inorganic chemistry , chemistry , polymer , biochemistry , engineering , metallurgy
To improve the hydrophilic and oleophobic properties of membrane, we adopted aluminum oxide (Al 2 O 3 ) nanowires and graphene oxide (GO) nanosheets to modify poly(vinylidene fluoride) (PVDF) membranes. The experimental results show that the intercalation of Al 2 O 3 nanowires between GO nanosheets effectively improved the roughness of the GO–Al 2 O 3 –PVDF membrane, and the permeability of the membrane with an optimal mass ratio of Al 2 O 3 to GO of 7.5 was 31 times that of the GO–PVDF membrane. Furthermore, the addition of Al 2 O 3 nanowires significantly enhanced both the hydrophilic and oleophobic properties of the GO–Al 2 O 3 –PVDF membrane. On the basis of the extended Derjaguin–Landau–Verwey–Overbeek theory, the energy barriers between the oil droplets and GO–PVDF and GO–Al 2 O 3 –PVDF membranes were 0.63 and 0.9 KT, respectively; this indicated improvements in the anti‐oil‐fouling ability of the GO–Al 2 O 3 –PVDF membranes. We also found that both the GO–PVDF and GO–Al 2 O 3 –PVDF membranes had great oil–water separation rates (97.9 and 99.4%, respectively) with an initial oil concentration of 200 mg/L. The findings of this study show that the GO–Al 2 O 3 –PVDF membrane is a promising oil–water separation membrane, and further investigation of the cleaning procedure is needed to promote its practical application in oil–water separation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47493.