Method for preparing composite material of copper sulfide and titanium dioxide nano-tube

Abstract

The invention provides a method for preparing a composite material of a copper sulfide and titanium dioxide nano-tube. The method comprises the following steps of putting a sanded titanium plate in acetone or absolute ethanol for ultrasonic cleaning, and is rinsed and aired with deionized water; anodizing a platinum plate serving as a cathode and the treated titanium plate serving as an anode in ethylene glycol solution with 0.25 weight percent of ammonium fluoride, namely a titanium dioxide nano-tube array grows on the surface of the titanium plate; putting the titanium plate growing the titanium dioxide nano-tube array in mixed solution filled with copper chloride and sodium thiosulfate, wherein molar concentrations of the copper chloride and the sodium thiosulfate in the mixed solutionare the same, and are between 0.0025 and 0.01mol / L; and sealing the solution with an autoclave, heating the autoclave to the temperature of between 60 and 120 DEG C, and preserving the temperature for 12 to 24 hours. The nano composite material prepared by the method has high sunlight absorbing and utilizing capability, has good application prospect in the field of solar cells, and has simple manufacture process, low equipment requirement and low preparation cost.

Description

technical field [0001] The invention relates to a preparation method of copper sulfide and titanium dioxide nanotube composite material. Background technique [0002] TiO prepared by anodic oxidation 2 Nanotubes are highly ordered and used as cathodes for dye-sensitized solar cells. Compared with solar-sensitized battery electrodes composed of nanoparticles, the electrons generated by them have longer lifetimes, and TiO 2 The conduits of the nanotubes provide better avenues for electron transport. However, since the existing titanium dioxide nanotubes are pure N-type semiconductor materials, they can only absorb light near ultraviolet light, but cannot absorb visible light, and the ability to absorb and utilize sunlight needs to be improved. In 2008, a quantum dot sensitized solar cell based on titanium dioxide nanotubes was developed, which uses semiconductor quantum dots instead of dyes, and has the characteristics of relatively simple device structure and quantum dot se...

AI Technical Summary

Problems solved by technology

However, because the existing titanium dioxide nanotubes are pure N-type semiconductor materials, they can only absorb light near ultraviolet light, but cannot absorb visible light, and the ability to absorb and utilize sunlight needs to be improved.

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