Since carbon nanotubes were firstly reported in 1991, they have been widely studied. With the excellent mechanical, electrical, thermal and hydrogen storage properties, carbon nanotubes have been applied in many fields. As nanomaterials, metal and metal oxide nanoparticles have surface effect, quantum size effect, small size effect and macro quantum tunneling effect, which endows them with unique properties of electricity, magnetism, light and catalysis. Metal and metal oxide nanoparticles coated CNT can be obtained by coating metal and metal oxide nanoparticle on the surface of CNT. Due to synergy effects, metal and metal oxide nanoparticles coated CNT have various properties that are widely applied in many fields.
Figure 1. An example of metal oxide nanoparticles coated CNT.
Figure 2. An example of metal nanoparticles coated CNT applied in catalyst field.
According to the type of metal and metal oxide nanoparticles coated on the CNT surface, metal and metal oxide nanoparticles coated CNT can be divided into copper coated CNT, silver coated CNT, gold coated CNT, nickel coated CNT, palladium coated CNT, platinum coated CNT, titanium coated CNT and the others.