Programmed Synthesis of Magnetic Magnesium Silicate Nanotubes with High Adsorption Capacities for Lead and Cadmium Ions

Authors

  • Dr. Chang-Yan Cao,

    1. Beijing National Laboratory for Molecular Science (BNLMS), Laboratory of Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China), Fax: (+86) 10-62557908
    Search for more papers by this author
  • Fang Wei,

    1. Beijing National Laboratory for Molecular Science (BNLMS), Laboratory of Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China), Fax: (+86) 10-62557908
    Search for more papers by this author
  • Jin Qu,

    1. Beijing National Laboratory for Molecular Science (BNLMS), Laboratory of Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China), Fax: (+86) 10-62557908
    Search for more papers by this author
  • Prof. Wei-Guo Song

    Corresponding author
    1. Beijing National Laboratory for Molecular Science (BNLMS), Laboratory of Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China), Fax: (+86) 10-62557908
    • Beijing National Laboratory for Molecular Science (BNLMS), Laboratory of Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China), Fax: (+86) 10-62557908
    Search for more papers by this author

Abstract

original image

Magnetic nanotubes formed with magnesium silicate (γ-Fe2O3@MgSNTs) were produced by a well-controlled programmed synthesis from carbon nanotubes (CNTs, see scheme). The nanotubes show high adsorption capacities for PbII and CdII. An ion-exchange mechanism between the MgII ions and PbII or CdII ions was proposed and confirmed.

Ancillary