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

A technology of titanium dioxide and composite materials, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve the problems of not being able to absorb visible light, and the ability to absorb and utilize sunlight needs to be improved, so as to achieve good application prospects, absorption and utilization The effect of high capacity and low production cost

Inactive Publication Date: 2010-12-01
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Experimental program
Comparison scheme
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Embodiment approach

[0020] One embodiment of the present invention is, a kind of preparation method of copper sulfide and titanium dioxide nanotube composite material, and its concrete practice is:

[0021] a. Titanium sheet pretreatment: use sandpaper to grind the titanium sheet with a purity of 99.9% until the surface is bright and traceless, put it in acetone or absolute ethanol for 30 minutes for ultrasonic cleaning, then rinse with deionized water and air dry;

[0022] b. Electrochemical preparation of titanium dioxide nanotubes: the platinum sheet is used as the cathode, and the titanium sheet after step a is used as the anode to carry out anodic oxidation in an ethylene glycol solution of 0.25%wt (that is, 0.25% by weight) ammonium fluoride, and the voltage 55v, the oxidation time is 13 hours, that is, a titanium dioxide nanotube array grows on the surface of the titanium sheet;

[0023] c. Preparation of composite material: put the titanium sheet with titanium dioxide nanotube array grown...

Embodiment 2

[0026] One embodiment of the present invention is, a kind of preparation method of copper sulfide and titanium dioxide nanotube composite material, and its concrete practice is:

[0027] a. Titanium sheet pretreatment: use sandpaper to grind the titanium sheet with a purity of 99.9% until the surface is bright and traceless, put it in acetone or absolute ethanol for 20 minutes for ultrasonic cleaning, then rinse with deionized water and air dry;

[0028] b. Electrochemical preparation of titanium dioxide nanotubes: the platinum sheet is used as the cathode, and the titanium sheet after step a is used as the anode to carry out anodic oxidation in an ethylene glycol solution of 0.25% wt ammonium fluoride, with a voltage of 50v and an oxidation time of 5 hours. That is, titanium dioxide nanotube arrays are grown on the surface of the titanium sheet;

[0029] c. Preparation of composite material: put the titanium sheet with titanium dioxide nanotube array grown in step b into a mi...

Embodiment 3

[0032] One embodiment of the present invention is, a kind of preparation method of copper sulfide and titanium dioxide nanotube composite material, and its concrete practice is:

[0033] a. Titanium sheet pretreatment: use sandpaper to grind the surface of the titanium sheet with a purity of 99.0% until it is bright and traceless, put it into acetone or absolute ethanol for 40 minutes for ultrasonic cleaning, then rinse with deionized water and air dry;

[0034] b. Electrochemical preparation of titanium dioxide nanotubes: the platinum sheet is used as the cathode, and the titanium sheet after step a is used as the anode to carry out anodic oxidation in an ethylene glycol solution of 0.25% wt ammonium fluoride, the voltage is 60v, and the oxidation time is 20 hours. That is, titanium dioxide nanotube arrays are grown on the surface of the titanium sheet;

[0035] c. Preparation of composite material: put the titanium sheet with titanium dioxide nanotube array grown in step b i...

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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 solution are 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...

Claims

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Application Information

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IPC IPC(8): C25D11/26
Inventor 柯川杨峰赵勇
Owner SOUTHWEST JIAOTONG UNIV
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