Fabrication, characterization and application of carbon ceramic nanocomposite prepared by using multiwalled carbon nanotubes and organically modified sol-gel glasses

Abstract

We herein report the development of carbon ceramic nanocomposite nanoelectrodes by incorporation of multiwalled carbon nanotubes (MVVCNTs) in organically modified sol-gel glass (Ormosil) matrix which is derived from silane precursors, 3-glycidoxypropyltrimethoxysilane, tetraethoxysilane and 3-aminopropyltrimethoxysilane. The different ratios of the silanes precursors, temperature, and gelation time were all optimized in order to obtain a stable and reproducible film. The ceramic composite was modified with the incorporation of MWCNTs, a redox mediator ferricyanide and the enzyme Horseradish peroxidase (HRP). Characterization of the ceramic composite was performed with scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM) and cyclic voltammetry (CV). The ceramic composite sensor was explored towards the sensing of hydrogen peroxide providing a useful electroanalytical performance. © 2014 Scientific Publishers. All Rights Reserved.