Coaxial heterogeneous ceric dioxide nanotube-titanium dioxide nanotube array thin film

Abstract

The invention discloses a coaxial heterogeneous ceric dioxide nanotube-titanium dioxide nanotube array thin film and a preparation method thereof. The thin film disclosed by the invention has a unique nano composite tube structure characteristic; the thickness of the thin film, the diameter of outer tubes and the diameter of inner tubes can be controlled freely according to functional needs; and the thin film has an excellent semiconductor characteristic and high sensitivity, and can be mainly used in fields of oxygen sensors, photoelectric nano elements and the like.

Description

technical field

[0001] The invention belongs to the technical field of inorganic semiconductor nanometer materials, and relates to a coaxial heterogeneous double tube: ceria nanotube-titanium dioxide nanotube array film and a preparation method thereof. Background technique

[0002] Ordered TiO 2 Nanotube array films have become one of the hotspots in nanomaterials research because of their excellent photoelectric, catalytic and sensing properties. Because this material and powder nano TiO 2 Compared with thin films, they have larger specific surface area and stronger adsorption capacity, and their potential application fields are also broader. At present, many scientific research institutions have carried out their application research in many fields such as sensitive devices, photocatalysis, and biological materials.

[0003] TiO 2 The nanotube structure has an ordered array structure, and the application of this material can improve the transport lifetime of photogener...