Electrochemical synthesis of aligned amorphous carbon nanotubes/TiO2 nanotubes heterostructured arrays and its field emission properties

The aligned a-CNTs on the TiO2 nanotubes arrays using a facile electrochemical method in methanol without any catalyst particles. The aligned a-CNTs are tightly connected with TiO2 nanotubes forming the heterostructured a-CNTs/TiO2 nanotubes arrays. This novel hetero-architecture demonstrates superior field emission properties with a low turn-on field and a high emission current density. Such aligned a-CNTs/TiO2 nanotube arrays will be a good potential candidate for field emission applications.191