• 文献标题:   New Hybrid Nanomaterials Derived from Chemical Functionalization of Clicked Graphene Oxide / Magnetite Nanocomposite with Peroxopolyoxotungstate Species
  • 文献类型:   Article
  • 作  者:   MASTERIFARAHANI M, MODARRES M
  • 作者关键词:   click chemistry, epoxidation, graphene oxide, magnetite nanoparticle, peroxopolyoxotungstate
  • 出版物名称:   CHEMISTRYSELECT
  • ISSN:   2365-6549
  • 通讯作者地址:   Kharazmi Univ
  • 被引频次:   2
  • DOI:   10.1002/slct.201701690
  • 出版年:   2017

▎ 摘  要

Two new hybrid nanomaterials were developed by immobilization of peroxopolyoxotungstate on the surface of clicked graphene oxide/magnetite nanocomposite. First, graphene oxide/magnetite nanocomposite was produced through the thiol-ene click reaction of graphene oxide with mercaptopropyl- functionalized magnetite nanoparticles in the presence of benzoyl peroxide. Then, the prepared graphene oxide/magnetite nanocomposite was functionalized with (3-aminopropyl) triethoxysilane or cysteamine hydrochloride as spacer groups for the subsequent immobilization of peroxopolyoxotungstate species. The prepared hybrid nanomaterials exhibited high activities and complete selectivities (>99%) in the epoxidation of olefins with H2O2 under mild reaction conditions. In addition, they can be magnetically separated and reused several times without remarkable loss of catalytic efficiency.