Method for preparing photoelectrocatalysis electrode material capable of efficiently degrading organic pollutants

An organic pollutant, photoelectric catalysis technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve the problems of weak bonding force of conductive substrates, shedding, use restrictions, etc., and achieve easy mass production and industrialization. The effect of production, light weight and low production cost

Inactive Publication Date: 2013-06-05
佛山市顺德区荣骏盛塑料有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004]There are generally two types of TiO2 photoelectrodes: one is to press nano-TiO2 powder , coating and other methods to connect with the conductive substrate to make a photoelectrode or to prepare nano-TiO2 on the conductive substrate by sol-gel, hydrothermal, (electro) chemical deposition and other methods to obtain a photoelectrode. Such as CN102385997A discloses "multilayer structure nano titanium dioxide photoelectrode and its manufacturing method", CN102760581A discloses "a titanium dioxide photoelectrode and its preparation method", CN101404216B discloses "a titanium dioxide composite film photoelectrode and its preparation method", etc. , these photoelectrodes generally have problems such as the weak binding force between TiO2 and the conductive substrate, which affects the conductivity, and the TiO2 is easy to fall off from the substrate, and its use is very limited; an

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  • Method for preparing photoelectrocatalysis electrode material capable of efficiently degrading organic pollutants
  • Method for preparing photoelectrocatalysis electrode material capable of efficiently degrading organic pollutants

Examples

Experimental program
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Example Embodiment

[0022] Example 1:

[0023] Anodizing and annealing treatment conditions for preparing product 1:

[0024] ①Anodic oxidation: Use clean titanium sponge sheet as anode, graphite sheet as cathode, and the area ratio of titanium sponge sheet to graphite sheet is 1:10; use ethylene glycol aqueous solution containing 0.15 mol / L of ammonium fluoride ( The volume ratio of ethylene glycol and water is 50:1) The anodizing solution is anodizing treatment, the anodizing voltage is 40V, the temperature is 20℃, and the time is 1 hour;

[0025] ② Annealing: Put the titanium sponge sheet after anodic oxidation treatment in step ① in a muffle furnace at room temperature to raise the temperature to 500°C, anneal for 2.5 hours, take it out after natural cooling, and characterize the morphology, thickness and photoelectric catalytic performance.

[0026] Characterization results:

[0027] a. Characterization results of morphology, thickness and crystal type: Product 1 is anatase TiO with a thickness ...

Example Embodiment

[0029] Example 2:

[0030] The anodizing and annealing treatment conditions of the prepared product 2:

[0031] ①Anodic oxidation: Use clean titanium sponge sheet as anode, graphite sheet as cathode, and the area ratio of titanium sponge sheet to graphite sheet is 1:5; use a ethylene glycol aqueous solution containing 0.05 mol / L of ammonium fluoride ( The volume ratio of ethylene glycol and water is 50:1) for the anodizing solution for anodizing, the anodizing voltage is 50 volts, the temperature is 30°C, and the time is 0.5 hours;

[0032] ② Annealing: Put the titanium sponge sheet after anodic oxidation treatment in step ① in a muffle furnace at room temperature to heat up to 450°C, annealing for 3 hours, take it out after natural cooling, and characterize the morphology, thickness and photoelectric catalytic performance.

[0033] Characterization results:

[0034] a. Characterization results of morphology, thickness and crystal type: Product 2 is anatase TiO with a thickness of...

Example Embodiment

[0036] Example 3:

[0037] The anodizing and annealing treatment conditions of the prepared product 3:

[0038] ①Anodic oxidation: Use clean titanium sponge sheet as anode, graphite sheet as cathode, and the area ratio of titanium sponge sheet to graphite sheet is 1:8; use ethylene glycol aqueous solution containing 0.25 mol / L sodium fluoride ( The volume ratio of ethylene glycol and water is 50:1) The anodizing solution is anodizing treatment, the anodizing voltage is 60V, the temperature is 30°C, and the time is 2 hours;

[0039] ② Annealing: Put the titanium sponge sheet after anodic oxidation treatment in step ① in a muffle furnace at room temperature to raise the temperature to 550°C, annealing for 2 hours, take it out after natural cooling, and characterize the morphology, thickness and photoelectric catalytic performance.

[0040] Characterization results:

[0041] a. Characterization results of morphology, thickness and crystal type: Product 3 is anatase TiO with a thickne...

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Abstract

The invention provides a method for preparing a photoelectrocatalysis electrode material capable of efficiently degrading organic pollutants. The photoelectrocatalysis electrode material is a TiO2 nano porous film which takes titanium sponge as a substrate, and the method comprises the following preparation steps: performing anodic oxidation on the titanium sponge piece subjected to ultrasonic oil removal and cleaning to obtain a highly orderly arranged TiO2 nano porous film, wherein the film is converted into an anatase structure from an undefined structure through annealing treatment, and the film can be used for degrading organic pollutants through photoelectrocatalysis. The material has the characteristics of light weight, low cost, high conductive property and high stability, the organic pollutants can be efficiently degraded, and the material can be applied to the fields such as photoelectrocatalysis water-splitting hydrogen production. The preparation method has the characteristics of simple process, convenient operation, low production cost and easy industrial production.

Description

technical field [0001] The invention belongs to the technical field of semiconductor photoelectric catalysis, and in particular relates to a method for preparing a photoelectric catalysis electrode material capable of efficiently degrading organic pollutants. [0002] Background technique [0003] Photocatalytic technology is a special heterogeneous catalytic technology developed on the basis of photocatalytic technology, which makes full use of the electric field to separate the photogenerated electron-hole pairs generated by photocatalysis, so as to effectively improve the catalytic effect. Photoelectrocatalytic technology is widely used in many fields such as water splitting and hydrogen production. In recent years, the use of photocatalytic to degrade organic pollutants, turn waste into profit, and protect the environment has also attracted widespread attention. The quality of photocatalytic effect is closely related to the selection and preparation of photoelectrocatal...

Claims

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Application Information

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IPC IPC(8): C25D11/26C22F1/18
Inventor 李凌杰雷惊雷马保健何建新张洁潘复生
Owner 佛山市顺德区荣骏盛塑料有限公司
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