• 文献标题:   Superhydrophobic kaolinite modified graphene oxide-melamine sponge with excellent properties for oil-water separation
  • 文献类型:   Article
  • 作  者:   PENG M, CHEN GQ, ZENG GM, CHEN AW, HE K, HUANG ZZ, HU L, SHI JB, LI H, YUAN L, HUANG TT
  • 作者关键词:   kaolinite, graphene oxide, melamine sponge, superhydrophobicity, oilwater separation
  • 出版物名称:   APPLIED CLAY SCIENCE
  • ISSN:   0169-1317 EI 1872-9053
  • 通讯作者地址:   Hunan Univ
  • 被引频次:   7
  • DOI:   10.1016/j.clay.2018.07.008
  • 出版年:   2018

▎ 摘  要

In this work, a facile and cost-effective method was reported to fabricate a novel, robust, and superhydrophobic kaolinite modified graphene oxide-melamine sponge (K-GOMS). The GO sheets were used to increase the roughness of the sponge smooth surface. The hydrophobic kaolinite adhered on GO sheets significantly enhanced the superhydrophobicity of the K-GOMS surface with a water contact angle of 152.3 degrees. Several organic solvents and oils were selected to test the adsorption performance of the obtained adsorbents. The results revealed that the superhydrophobic K-GOMS exhibited not only superior adsorption capacity for various organic solvents and oils, from 60 to 113 times of its own weight, but also outstanding recyclability with an adsorption capacity retention higher than 94% after 30 cycles of diesel oil adsorption, and excellent environmental tolerance in wide range of pH values and temperatures. Therefore, this study provides an effective way for constructing facile, low-cost, and large-scale production of superhydrophobic adsorbents for oil-water separation.