Gas sensors made from carbon nanotubes without their doping and functionalization have serious shortcomings. Analysis of physics and techniques of decoration (functionalization) of carbon nanotubes using organic polymers, doping with impurities, metallic nanoparticle/nanoclusters is carried out. The development of metal oxide nanocomposite sensors decorated with carbon nanotubes is very promising for realization of detectors of different important gases with dramatically improved response, better time characteristics and smaller consumed power.
