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A kind of cu2o-ag-tio2 nanotube thin film and its preparation method

A cu2o-ag-tio2, nanotube technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to make up for inefficiency problems, make up for anodizing or impregnation methods to load trace amounts, reduce The effect of forbidden band width

Active Publication Date: 2018-05-01
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the one-step method for electrodeposition of narrow-bandgap semiconductors and noble metals is rarely reported. 2 Photocatalytic thin film, not only can greatly improve TiO 2 The photocatalytic performance of the film, and can reduce the cost of preparing new heterogeneous photocatalytic films

Method used

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  • A kind of cu2o-ag-tio2 nanotube thin film and its preparation method
  • A kind of cu2o-ag-tio2 nanotube thin film and its preparation method
  • A kind of cu2o-ag-tio2 nanotube thin film and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] a Cu 2 O-Ag-TiO 2 Nanotube films, films made of Cu 2 O, Ag and TiO 2 Composite; TiO in film 2 Exist in the form of nano-array tubes, Cu exists in the top, outer wall and inside of the nano-array tubes in two states of deposition phase and dispersion mode, Cu mainly exists in the form of dispersion, Ag exists in two states of deposition phase and dispersion mode in the On the top, outer wall and inside of the nanoarray tube, Ag mainly exists in the deposition phase.

[0058] The Cu 2 O-Ag-TiO 2 The thickness of the nanotube film is 2.5 μm.

[0059] Cu above 2 O-Ag-TiO 2 The preparation method of nanotube thin film specifically comprises the steps:

[0060] Step 1, the preparation of electrolyte and the pretreatment of titanium plates are carried out in no order:

[0061] Electrolyte preparation:

[0062] (a) adopt electronic balance to take by weighing 0.67g solid ammonium fluoride, pour in the oxidation tank;

[0063] (b) Use a graduated cylinder to measure ...

Embodiment 2

[0076] a Cu 2 O-Ag-TiO 2 Nanotube films, films made of Cu 2 O, Ag and TiO 2 Composite; TiO in film 2 Exist in the form of nano-array tubes, Cu exists in the top, outer wall and inside of the nano-array tubes in two states of deposition phase and dispersion mode, Cu mainly exists in the form of dispersion, Ag exists in two states of deposition phase and dispersion mode in the On the top, outer wall and inside of the nanoarray tube, Ag mainly exists in the deposition phase.

[0077] The Cu 2 O-Ag-TiO 2 The thickness of the nanotube film is 2.5 μm.

[0078] Cu above 2 O-Ag-TiO 2 The preparation method of nanotube thin film, except that following 1 point is different, preparation method is the same as embodiment 1;

[0079] The difference: In step 1(b), a graduated cylinder is used to measure 0.1mol / L of AgNO 3 The total solution is 0.6ml.

Embodiment 3

[0081] a Cu 2 O-Ag-TiO 2 Nanotube films, films made of Cu 2 O, Ag and TiO 2 Composite; TiO in film 2 Exist in the form of nano-array tubes, Cu exists in the top, outer wall and inside of the nano-array tubes in two states of deposition phase and dispersion mode, Cu mainly exists in the form of dispersion, Ag exists in two states of deposition phase and dispersion mode in the On the top, outer wall and inside of the nanoarray tube, Ag mainly exists in the deposition phase.

[0082] The Cu 2 O-Ag-TiO 2 The thickness of the nanotube film is 2.5 μm.

[0083] Cu above 2 O-Ag-TiO 2 The preparation method of nanotube thin film, except that following 1 point is different, preparation method is the same as embodiment 1;

[0084] The difference: step 1 in step 1(b) uses a graduated cylinder to measure 0.1mol / L of AgNO 3 The total solution is 1ml.

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Abstract

The invention discloses a Cu2O-Ag-TiO2 nanotube film and a preparation method, and belongs to the technical field of materials and electrochemistry. The film is formed by compounding Cu2O, Ag and TiO2, and is 2.5-5 [mu]m thick. The preparation method includes the steps that (1) oxide skin and scratches on the surface of a titanium plate are removed through electrolyte prepared from solid ammonium fluoride, a Cu(NO)2.3H2O solution, an AgNO3 solution and ethylene glycol; (2) an anodizing device is mounted; (3) the oxidation tank temperature and magnetic stirring are controlled, pulse commutating voltage source waves are set, a power source is connected, anodizing is conducted, and a Cu2O-Ag-TiO2 composite film is formed through deposition on the surface of the titanium plate; and (4) annealing is conducted, and the photocatalytic Cu2O-Ag-TiO2 nanotube film is obtained. According to the preparation method, the effects on a TiO2 nanotube array can be achieved, the defects of the other compound phase can be overcome, and the photocatalytic performance of the compound TiO2 oxidized film is improved; and the forbidden band of the film prepared through the method become narrower, and the recombination rate of photo electrons and holes is lowered.

Description

technical field [0001] The invention belongs to the technical field of materials and electrochemistry, in particular to a Cu 2 O-Ag-TiO 2 Nanotube thin film and preparation method. Background technique [0002] Titanium dioxide has good chemical stability, good electron acceptance and conductivity, and has shown unique advantages among many semiconductor photocatalysts. TiO thin films with well-arranged nanotube arrays exhibit stronger adsorption properties, more efficient carrier separation capabilities, and photocatalytic properties. Compared with other forms of titanium dioxide, titanium dioxide nanotube arrays have larger specific surface area, stronger adsorption effect and higher recovery rate. There are many methods for preparing titanium dioxide nanotubes, among which the template-assisted deposition method, hydrothermal synthesis method and anodic oxidation method are common. Among them, the anodic oxidation method is not only simple and fast, but also can make ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26C25D3/38C25D3/46C25D5/18C25D11/02B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C25D3/38C25D3/46C25D5/18C25D11/024C25D11/26
Inventor 陈岁元丁琦尚凡敏刘常升梁京
Owner NORTHEASTERN UNIV LIAONING