Preparation method of titanium oxide nanotube array film

Abstract

The invention discloses a preparation method of a titanium oxide nanotube array film. The preparation method includes the following steps that (1), a 10 mm*20 mm pure titanium sheet is cut, ground through metallographical sand paper, and sequentially washed ultrasonically with acetone, ethyl alcohol and deionized water; (2), the pure titanium sheet is polished for 30 s with a mixed solution formedby hydrofluoric acid, concentrated nitric acid and deionized water, and a pre-treated pure titanium sheet is prepared, wherein the volume ratio of the three solutions is 1:4:5; and (3), the pre-treated pure titanium sheet serving as an anode and a graphite sheet serving as a cathode are put in an oxidized solution at room temperature, oxidation treatment is carried out for 30 s-3,000 s in the 20Vvoltage environment provided by a direct current stabilized power supply, and the high-density titanium oxide nanotube array film with the orderly structure is generated on the surface of pure titanium. The electrode spacing between the anode and the cathode is 3 cm, and the oxidized solution is prepared from electrolyte formed by mixing 0.5 wt% of hydrofluoric acid, 0.1 wt% of glacial acetic acid and 0.1 wt% of polyethylene glycol, glacial acetic acid serving as a complexing agent, and polyethylene glycol serving as a stabilizer.

Description

technical field [0001] The invention relates to the technical field of nanotube array film preparation technology, in particular to a preparation method of titanium oxide nanotube array film. Background technique [0002] As we all know, the microstructure of matter largely determines the functionality of materials, and structures such as nanowires, nanorods, and nanotubes have been extensively studied. TiO 2 It is an important inorganic functional material and has a wide range of applications in the storage and utilization of solar energy, photoelectric conversion, and photocatalytic degradation. Compared with nanopowders and nanofilms, nanotubes have larger specific surface area and higher surface properties, which are expected to improve the performance of TiO2. 2 Photoelectric conversion and photocatalytic efficiency. Currently TiO 2 The preparation methods of nanotubes include template method, hydrothermal method and anodic oxidation method. Compared with the first...

AI Technical Summary

Problems solved by technology

The traditional anodic oxidation method is to prepare TiO on a titanium substrate 2 Nanotube array film, however, the preparation process of traditional titanium oxide film is complex and cumbersome, the nanotube array film produced by the reaction is disorderly, and the overall structure is not formed in an orderly and uniform manner, the growth of nanotubes is unstable and varies in length, and the density of nanotubes Low, so that there are many defects in the titanium oxide film during the formation process

Images