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Method for photoelectrocatalytic degradation of organic matters by glass based TiO2 nanometer pipe array electrode

A nanotube array and photocatalytic technology, which is applied in the field of environmental pollution control, can solve the problems of affecting the photon quantum efficiency, limiting the application range, and the opacity of the nanotube array film, so as to achieve high performance of photocatalytic oxidation of organic matter and increase absorption. Effect

Inactive Publication Date: 2009-09-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, titanium-based TiO 2 The nanotube array film is opaque and can only be illuminated on one side for photocatalytic or photocatalytic reactions, which will also affect its photon quantum efficiency and limit its application range

Method used

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  • Method for photoelectrocatalytic degradation of organic matters by glass based TiO2 nanometer pipe array electrode
  • Method for photoelectrocatalytic degradation of organic matters by glass based TiO2 nanometer pipe array electrode
  • Method for photoelectrocatalytic degradation of organic matters by glass based TiO2 nanometer pipe array electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The cleaned conductive glass is heated to remove water molecules on its surface, and after cooling, a layer of 2 μm thick titanium film is sputtered on the surface of the conductive glass by a magnetron sputtering apparatus in an argon protective gas atmosphere to obtain a conductive glass Ti-based thin film electrodes.

[0023] The conductive glass-based titanium film electrode is used as the anode, and the platinum sheet is used as the counter electrode to assemble a double-electrode system, and ethylene glycol is added to the reaction vessel, and then ammonium fluoride solid is added to the ethylene glycol so that the mass percentage of fluoride ions in the solution up to 0.15%. Adjust the anodic oxidation voltage to 30V, and after 1 hour of reaction, a transparent glass-based TiO can be obtained 2 Nanotube array thin film sample, the tube diameter is 80nm, tube length is 1μm (see figure 2 ).

[0024] Glass-based TiO 2 The nanotube array thin film sample was rin...

Embodiment 2

[0033] The cleaned conductive glass is heated to remove water molecules on its surface, and after cooling, a 1 μm thick titanium film is sputtered on the surface of the conductive glass by a magnetron sputtering apparatus in an argon protective gas atmosphere to obtain a conductive glass Ti-based thin film electrodes.

[0034] The cleaned conductive glass-based titanium film electrode is used as the anode, and the platinum sheet is used as the counter electrode to assemble a double-electrode system, and an aqueous solution of hydrofluoric acid is added to the reaction vessel as the electrolyte. The mass percentage of fluorine ions in the electrolyte reaches 0.1%. The anodic oxidation voltage is 15V, and after 30 minutes of reaction, a transparent glass-based TiO with a diameter of 50nm and a length of 0.3μm can be obtained. 2 Nanotube array film samples.

[0035] Glass-based TiO 2 The nanotube array thin film sample was rinsed with water and dried in an oven. After cooling t...

Embodiment 3

[0038] The cleaned conductive glass is heated to remove water molecules on its surface, and after cooling, a layer of 2 μm thick titanium film is sputtered on the surface of the conductive glass by a magnetron sputtering apparatus in an argon protective gas atmosphere to obtain a conductive glass Ti-based thin film electrodes.

[0039] The cleaned conductive glass-based titanium film electrode is used as the anode, and the platinum sheet is used as the counter electrode to assemble a double-electrode system, and ethylene glycol is added to the reaction vessel, and then ammonium fluoride solid is added to the ethylene glycol to make the fluorine in the solution The mass percentage of ions reaches 0.15%. Adjust the anodic oxidation voltage to 60V, and after 3 hours of reaction, a transparent glass-based TiO with a diameter of 120nm and a length of 1.8μm can be obtained. 2 Nanotube array film samples.

[0040] Glass-based TiO 2 The nanotube array thin film sample was rinsed wi...

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Abstract

The invention relates to a method for the photoelectrocatalytic degradation of organic matters by a glass based TiO2 nanometer pipe array electrode, and belongs to the technical field of environmental pollution treatment. The surface of conducting glass is splashed with a layer of 1 to 3mu m of metallic titanium membrane which is used as an anode; the conducting glass with the metallic titanium membrane is put in a fluorine ion containing electrolyte solution for anodic oxidation by taking platinum as a counter electrode; after the anodic oxidation, a transparent sample of the glass based TiO2 nanometer pipe array membrane is obtained; and the sample is further sintered at a high temperature to obtain the transparent glass based TiO2 nanometer pipe array electrode, which is used for the photoelectric catalysis photoelectrocatalytic degradation of organic pollutants. In the method, the transparent glass based TiO2 nanometer pipe array membrane is used as the electrode, so that the electrode has good mechanical stability and double-sided light transmission, and can show higher performance of the photoelectrocatalytic oxidation of organic matters and be widely used for treating multiple kinds of wastewater.

Description

technical field [0001] The present invention relates to a kind of using glass-based TiO 2 The invention discloses a method for photoelectrically degrading organic matter by a nanotube array electrode, which belongs to the technical field of environmental pollution control. Background technique [0002] Nano-TiO 2 As an excellent photocatalyst, it has been widely used in the catalytic degradation of organic pollutants in the environment. In 2001, American scientists Grimes and others used the method of anodic oxidation of metal titanium to prepare TiO in hydrofluoric acid aqueous medium. 2 Nanotube array films (Gong D W et al J. Mater. Res. (2001) 16:3331-3334). In this titanium-based TiO 2 Among nanotube array thin film materials, photocatalyst TiO 2 The nanotubes are vertically and orderly arranged on the metal titanium substrate, which is beneficial to the separation and transmission of photogenerated charges. As an electrode material, it can exhibit extremely high ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J37/00B01J35/00H01L31/0224H01L51/52H01L51/56C25D11/26
Inventor 周保学白晶李金花
Owner SHANGHAI JIAO TONG UNIV