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Method for preparing cuprous oxide/titanium dioxide core-shell structure array film through AC electro-deposition method

A technology of core-shell structure and cuprous oxide, which is applied in the direction of electrolytic coating, electrolytic inorganic material coating, surface reaction electrolytic coating, etc., can solve the problems of non-formation, complicated process, easy to destroy nanotube array structure, etc., and achieve easy control , The process is simple, and the effect of realizing cheap mass production

Inactive Publication Date: 2010-06-02
TIANJIN UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Currently preparing Cu 2 O / TiO 2 The array thin film mainly adopts electrodeposition method to deposit Cu 2 O particles deposited onto TiO 2 inside the nanotube array, but due to the TiO 2 Nanoarrays are mainly prepared by anodic oxidation, resulting in TiO 2 There is a barrier layer with diode unidirectional conduction characteristics between the nanotube and the Ti substrate, so the usual DC electrodeposition method is used, only on TiO 2 Cu growth at the orifice 2 O, cannot form effective Cu 2 O / TiO 2 core-shell array
If you want Cu 2 O deposited on TiO 2 In the tube, the barrier layer can only be removed first, and then the method of direct current electrodeposition is used, but the process of this method is complicated and it is easy to damage the TiO2. 2 nanotube array structure

Method used

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  • Method for preparing cuprous oxide/titanium dioxide core-shell structure array film through AC electro-deposition method
  • Method for preparing cuprous oxide/titanium dioxide core-shell structure array film through AC electro-deposition method
  • Method for preparing cuprous oxide/titanium dioxide core-shell structure array film through AC electro-deposition method

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Embodiment Construction

[0021] The present invention uses commercially available chemically pure raw materials, and the specific examples are as follows.

[0022] Under stirring conditions, the NH 4 Dissolve F in water, stir evenly, then add glycerin and dimethyl sulfoxide (DMSO), and then stir the mixed solution for 1 hour to obtain a stable transparent solution. See Table 1 for the specific formula.

[0023] Table 1

[0024] NH 4 f

(wt%)

Glycerol

(mL)

h 2 o

(mL)

DMSO

(mL)

oxidation voltage

(V)

Reaction time

(h)

0.5

160

20

20

40

2

[0025] Using the solution prepared above as the electrolyte, the cleaned Ti sheet is used as the anode, and the Pt sheet is used as the cathode. After oxidizing for 2 hours with a DC current of 40V at room temperature, the Ti sheet is taken out and washed with deionized water to obtain a one-dimensional nano-TiO 2 The material of the array film ( figure 1 ), TiO 2 T...

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Abstract

The invention discloses a method for preparing cuprous oxide / titanium dioxide core-shell structure array film through AC electro-deposition method. The method comprises the following steps: (1) adopting anode oxidation method to prepare TiO2 nanotube array film; (2) adopting AC electro-deposition method to prepare one-dimensional Cu2O / TiO2 core-shell structure array film, dissolving CuSO4 in a mixed solution of lactic acid and water to prepare Cu2O electro-deposition solution, using TiO2 / Ti as the working electrode and graphite as the counter electrode to deposit Cu2O under the alternating voltage, washing the electrode surface of the Cu2O / TiO2 nano-array film with deionized water, and drying to prepare the one-dimensional Cu2O / TiO2 core-shell structure array film. The method of the invention has easy technology, is easy to control, is not easy to destroy the TiO2 nanotube array structure, and is possible to realize mass production with low cost.

Description

technical field [0001] The invention relates to a method for preparing a cuprous oxide / titania core-shell structure array film, in particular to a method for preparing a one-dimensional cuprous oxide / titania core-shell structure array film by an alternating current electrodeposition method. Background technique [0002] Under the irradiation of light, semiconductor materials convert light energy into chemical energy to promote the synthesis of compounds or degrade compounds, which is called photocatalysis. TiO 2 The hole / electron pairs excited and generated under light have a high oxidation ability, so they have better photocatalytic performance. But since TiO 2 The band gap is wide, and the light absorption is limited to the short-wavelength ultraviolet region, which accounts for only 5% of the solar spectrum, thus limiting the utilization of solar energy. Combining narrow bandgap semiconductors with TiO 2 Composite to form a heterojunction, which can effectively expand...

Claims

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Application Information

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IPC IPC(8): C25D9/04C25D11/26
Inventor 侯峰阴育新
Owner TIANJIN UNIV
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