• 文献标题:   High-flux nanofiltration membranes prepared with beta-cyclodextrin and graphene quantum dots
  • 文献类型:   Article
  • 作  者:   XUE J, SHEN JL, ZHANG RN, WANG F, LIANG SW, YOU XD, YU QQ, HAO YF, SU YL, JIANG ZY
  • 作者关键词:   graphene quantum dot, betacydodextrin, interfacial polymerization, loose nanofiltration membrane, highflux
  • 出版物名称:   JOURNAL OF MEMBRANE SCIENCE
  • ISSN:   0376-7388 EI 1873-3123
  • 通讯作者地址:   Tianjin Univ
  • 被引频次:   0
  • DOI:   10.1016/j.memsci.2020.118465
  • 出版年:   2020

▎ 摘  要

In this study, high flux beta-CD/GQDs nanofiltration (NF) membranes were prepared by interfacial polymerization with beta-cyclodextrin (beta-CD) as the aqueous monomer, graphene quantum dots (GQDs) as the additive and trimesoyl chloride (TMC) as the organic monomer. The addition of GQDs not only modulated the membrane surface properties, but also led to the formation of a loose selective layer due to the nonspecific hydrogen bonding interactions between GQDs and beta-CD. The pure water flux of the beta-CD/GQDs NF membranes increased from 122.2 to 474.7 L/m(2)h (at the pressure of 0.1 MPa) when the concentration of GQDs increased from 0 to 0.5 wt%, almost 3.9 times higher than that of the pristine beta-CD membrane. The dye rejection of Eriochrome Black T and Congo Red essentially remained above 93.0%. The beta-CD/GQDs NF membranes with superior filtration performance and excellent chlorine resistance hold great promise in dye wastewater treatment.