Preparation of Multiwall Carbon Nanotubes/Alumina Precursor Composites

Abstract

 In this study, the multi-walled carbon nanotubes (MWCNTs) were modified with a mixture of concentrated HNO₃/H₂SO₄ (3:1 by volume). The TEM showed that the modified MWCNTs were well dispersed. Compared with raw MWCNTs, the modified MWCNTs can disperse uniformly in a mixture of saturated aqueous solution of NH₄HCO₃, NH₃·H₂O and little sodium dodecyl benzene sulfonate (SDBS) solution. The TEM and XRD of the powders of composites indicated that the alumina precursor may wrap the MWCNTs absolutely.