Magnetic field induced orderly arrangement of Fe3O4/GO composite particles for preparation of Fe3O4/GO/PVDF membrane
作者：Yan Huang; ChangfaXiao; QinglinHuang; Hailiang Liu; Junqiang Hao; Liang Song
關鍵字：Fe3O4/graphene oxide particles;Magnetic field;Directional migration;Ordered arrangement;Antifouling
論文來源：期刊
發表時間：2018年
Magnetic Fe3O4/graphene oxide (GO) composite particles with excellent properties of magnetic susceptibility and hydrophilicity were synthesized by a facile one-step chemical coprecipitation method. Then the prepared magnetic Fe3O4/graphene oxide (MGO) particles were introduced to polyvinylidene fluoride (PVDF) casting solution to fabricated PVDF/MGO hybrid membrane under the magnetic field. The directional migration and ordered arrangement of MGO sheets in magnetic field were investigated. The preparation of multilayer composite membrane was in the form of functional layer and support substrate in series, in which the functional layer with MGO orderly embedded into the membrane surface was prepared via magnetic field induced MGO sheets to the membrane surface during the phase inversion process. There was obvious effects of this novel structure on the pure water flux, hydrophilicity and antifouling properties of the membranes. The PVDF/MGO membranes showed high pure water flux (484 L m?2 h?1) and high flux recovery ratio (up to 83.0%).