METHOD OF FABRICATION FOR CARBON NANOTUBES UNIFORMLY COATED WITH TITANIUM DIOXIDE

摘要

A method for preparing carbon nanotubes coated with titanium dioxide is provided to produce the carbon nanotubes which have characteristics of both carbon nanotubes and titanium dioxide nanowires and are usable as gas sensors, photocatalysts, etc. A method for preparing carbon nanotubes(16') coated with titanium dioxide includes the steps of: (a) functionalizing carbon nanotubes with hydrophilic groups; (b) mixing the hydrophilically functionalized carbon nanotubes with a solution containing a titanium dioxide precursor; (c) purifying carbon nanotubes coated with the titanium dioxide precursor from a mixed solution of the carbon nanotubes and titanium dioxide precursor; and (d) heat-treating the purified carbon nanotubes coated with the titanium dioxide precursor. Further, the carbon nanotubes are single-wall carbon nanotubes or multi-wall carbon nanotubes.