Multiwalled Carbon-Nanotube-Embedded Microcapsules and Their Electrochemical Behavior

Jiwei Cui, Yaqing Liu and Jingcheng Hao*
Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, P. R. China
J. Phys. Chem. C, 2009, 113 (10), pp 3967–3972
DOI: 10.1021/jp808785j
Publication Date (Web): February 18, 2009
Copyright © 2009 American Chemical Society
* To whom correspondence should be addressed. E-mail: jhao@sdu.edu.cn. Fax: +86-531-88366074.

Abstract

Multiwalled carbon-nanotube (MWCNT)-embedded microcapsules were fabricated by the stepwise deposition of polyelectrolytes and oxidized MWCNTs using the layer-by-layer (LbL) self-assembly technique based on electrostatic interaction. Electrochemical behaviors of the MWCNT-embedded microcapsules were studied by cyclic voltammetry (CV). Transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), and confocal laser scanning microscopy (CLSM) were used to characterize the morphology of the microcapsules. Experimental results revealed that MWCNTs were homogeneously assembled in the microcapsule shells, forming a netlike structure. CV measurements indicated that MWCNT-embedded microcapsules exhibited different electrochemical behaviors by changing surrounding conditions, such as pH and salt concentration. The MWCNT-embedded microcapsules, combined with the electrochemical behaviors, are envisaged to be utilized in applications for biosensors and catalysis.

View: Full Text HTML | Hi-Res PDF | PDF w/ Links

Tools

SciFinder Links

SciFinder subscribers: Click to sign in | Not a SciFinder subscriber? Learn more at www.cas.org

Explore by:

History

  • Published In Issue March 12, 2009
  • Article ASAPFebruary 18, 2009
  • Received: October 4, 2008
    Revised: January 3, 2009

Recommend & Share

Related Content

Other ACS content by these authors: