Mesoporous silica coating on carbon nanotubes: Layer-by-layer method

Xiaoyong Deng, Ping Qin, Man Luo, Erlei Shao, Hui Zhao, Xing Yang, Yanwen Wang, Haifa Shen, Zheng Jiao, Minghong Wu

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

It is of great interest to develop a simple, general, and easy-handling procedure for mesoporous silica coating. A facile, single-step method to coat iron oxide nanoparticles has been reported by Hyeon's group. However, up to present, this method only successfully applied to those zero-dimensional nanostructures heavily capped by cetyltrimethyl ammonium bromide (CTAB); no others are reported. It is unknown how this simple method is feasible in coating those nanostructures not capped by CTAB. Herein, using carbon nanotubes (CNTs) as the model, through an analogous layer-by-layer assembly method, many more CTAB molecules were found to anchor to CNTs, on which uniform mesoporous silica shells can successfully be formed by Hyeon's coating method. We believe that this contribution will pave the way for advancing the single-step method to become a general protocol in the mesoporous silica coating field.

Original languageEnglish (US)
Pages (from-to)6815-6822
Number of pages8
JournalLangmuir
Volume29
Issue number23
DOIs
StatePublished - Jun 11 2013

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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