%0 Journal Article
%T Preparation and Characteristics of SiOx Coated Carbon Nanotubes with High Surface Area
%A Aeran Kim
%A Seongyop Lim
%A Dong-Hyun Peck
%A Sang-Kyung Kim
%A Byungrok Lee
%A Doohwan Jung
%J Nanomaterials
%D 2012
%I MDPI AG
%R 10.3390/nano2020206
%X An easy method to synthesize SiO x coated carbon nanotubes (SiO x-CNT) through thermal decomposition of polycarbomethylsilane adsorbed on the surface of CNTs is reported. Physical properties of SiO x-CNT samples depending on various Si contents and synthesis conditions are examined by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), nitrogen isotherm, scanning electron microscope (SEM), and transmission electron microscope (TEM). Morphology of the SiO x-CNT appears to be perfectly identical to that of the pristine CNT. It is confirmed that SiO x is formed in a thin layer of approximately 1 nm thickness over the surface of CNTs. The specific surface area is significantly increased by the coating, because thin layer of SiO x is highly porous. The surface properties such as porosity and thickness of SiO x layers are found to be controlled by SiO x contents and heat treatment conditions. The preparation method in this study is to provide useful nano-hybrid composite materials with multi-functional surface properties.
%K carbon nanotubes
%K silicon oxide
%K hybrid materials
%K porosity
%U http://www.mdpi.com/2079-4991/2/2/206