• 文献标题:   Superhydrophobic magnetic reduced graphene oxide-decorated foam for efficient and repeatable oil-water separation
  • 文献类型:   Article
  • 作  者:   LV XS, TIAN DH, PENG YY, LI JX, JIANG GM
  • 作者关键词:   superhydrophobic foam, oilwater separation, magnetic nanoparticle, graphene, adsorption capacity
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Chongqing Technol Business Univ
  • 被引频次:   28
  • DOI:   10.1016/j.apsusc.2018.10.110
  • 出版年:   2019

▎ 摘  要

Fabrication of robust and cost-effective adsorbents for quick and easy clean-up of oil spills is highly desired. Here, we developed one novel porous melamine foam (MF) with both the reduced graphene oxide (rGO) and hydrophobic magnetic nanoparticles decorated on its skeleton (r-MGMF) via a stepwise assembly and reductive annealing process. The resultant r-MGMF shows highly superhydrophobic with a water contact angle (WCA) of 164.4 +/- 2.0 degrees, and superparamagnetic with a saturated moment of 10.59 emu/g. With its porous structure, superhydrophobic surface and magnetic property, r-MGMF can move under the control of a magnet, and is highly efficient to separate oil from water with a high adsorption capacity, and for example, can adsorb canola oil about 54.13 times of its own weight The used r-MGMF can be regenerated by a simple squeezing process without significant structure and efficiency degradation at least ten runs of adsorption-regeneration process. Additionally, the r-MGMF is competent to continuously separate an oil-water mixed flow with a separation efficiency of above 96.33%. High selectivity, hydrophobic stability, large adsorption capacity, and excellent recyclability promise r-MGMF a great potential in oily wastewater treatment.