• 文献标题:   Performances and mechanisms of Mg/Al and Ca/Al layered. double hydroxides for graphene oxide removal from aqueous solution
  • 文献类型:   Article
  • 作  者:   WANG J, WANG XX, TAN LQ, CHEN YT, HAYAT T, HU J, ALSAEDI A, AHMAD B, GUO W, WANG XK
  • 作者关键词:   graphene oxide, coagulation, layered double hydroxide, mechanism
  • 出版物名称:   CHEMICAL ENGINEERING JOURNAL
  • ISSN:   1385-8947 EI 1873-3212
  • 通讯作者地址:   North China Elect Power Univ
  • 被引频次:   53
  • DOI:   10.1016/j.cej.2016.04.012
  • 出版年:   2016

▎ 摘  要

The Mg/Al layered double hydroxides (Mg/Al-LDH) as well as Ca/Al-LDH were successfully synthesized by a facile co-precipitation method and were applied as adsorbents for the efficient elimination of graphene oxide (GO) from aqueous solutions. Experimental data showed that the temperature and ionic strength did not play significant role in GO removal. The interaction of GO with Mg/Al-LDH and Ca/Al-LDH achieved interaction equilibrium in less than 1 h. The removal mechanism of GO on Mg/Al-LDH and Ca/AI-LDH could be explained by electrostatic attraction and bridging function between the two materials, and the removal capabilities were Ca/Al-LDH > Mg/Al-LDH. Based on the experimental results, the Ca/Al-LDH could be a very promising material for efficient elimination of GO from aqueous solutions. Results from this study provided critical information for the transport and potential fate of GO in natural environment. (C) 2016 Elsevier B.V. All rights reserved.