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Preparation method of doped nano TiO2 photo-anode plate

A photoanode and doping-type technology, applied in chemical instruments and methods, water/sewage treatment, light water/sewage treatment, etc., to achieve the effect of improving service life and increasing service life

Active Publication Date: 2021-07-23
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the photoanode prepared by hydrothermal method, anodic oxidation and other methods can effectively improve the activity and current efficiency of titanium dioxide anode, but few people use solvothermal method to prepare TiO 2 Application on stainless steel plate to make photoanode plate

Method used

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  • Preparation method of doped nano TiO2 photo-anode plate
  • Preparation method of doped nano TiO2 photo-anode plate
  • Preparation method of doped nano TiO2 photo-anode plate

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A doped nano-TiO 2 A method for preparing a photoanode plate, comprising the following steps:

[0031] (1) Grinding and cleaning treatment of the stainless steel plate: First, the surface of the stainless steel plate is polished with 600 mesh, 1000 mesh, and 2000 mesh sandpaper in sequence. Solution (volume fraction is 20%) in the cleaning tank soaked 24h, and nitric acid solution is used to remove the surface oxide of stainless steel plate, finally, adopts deionized water to wash, obtains the stainless steel plate after grinding and cleaning;

[0032] (2) Sulfuric acid treatment of stainless steel plate: put the stainless steel plate after polishing and cleaning in step (1) into the reaction tank, soak overnight in 98% concentrated sulfuric acid, then wash with deionized water to obtain stainless steel plate after acid treatment. plate, concentrated sulfuric acid is used to passivate the surface of stainless steel plate;

[0033] (3) Electrolytic treatment of stainle...

Embodiment 2

[0046] A doped nano-TiO 2 A method for preparing a photoanode plate, comprising the following steps:

[0047] (1) Grinding and cleaning treatment of the stainless steel plate: First, the surface of the stainless steel plate is polished with 600 mesh, 1000 mesh, and 2000 mesh sandpaper in sequence. solution (volume fraction is 10%) in the cleaning tank soaked 24h, nitric acid solution is used to remove the surface oxide of stainless steel plate, finally, adopts deionized water to wash, obtains the stainless steel plate after grinding and cleaning;

[0048] (2) Sulfuric acid treatment of stainless steel plate: put the stainless steel plate after polishing and cleaning in step (1) into the reaction tank, soak overnight in 80% concentrated sulfuric acid, then wash with deionized water to obtain stainless steel plate after acid treatment. plate, concentrated sulfuric acid is used to passivate the surface of stainless steel plate;

[0049] (3) Electrolytic treatment of stainless s...

Embodiment 3

[0058] A doped nano-TiO 2 A method for preparing a photoanode plate, comprising the following steps:

[0059] (1) Grinding and cleaning treatment of the stainless steel plate: First, the surface of the stainless steel plate is polished with 600 mesh, 1000 mesh, and 2000 mesh sandpaper in sequence. Solution (volume fraction is 15%) soaked in the cleaning tank of 24h, and nitric acid solution is used to remove the surface oxide of stainless steel plate, finally, adopts deionized water to wash, obtains the stainless steel plate after grinding and cleaning;

[0060] (2) Sulfuric acid treatment of stainless steel plate: put the stainless steel plate after polishing and cleaning in step (1) into the reaction tank, soak overnight in 60% concentrated sulfuric acid, then wash with deionized water to obtain stainless steel after acid treatment. plate, concentrated sulfuric acid is used to passivate the surface of stainless steel plate;

[0061] (3) Electrolytic treatment of stainless ...

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Abstract

The invention discloses a preparation method of a doped nano TiO2 photo-anode plate, the preparation method comprises the following steps: alternately depositing on a stainless steel substrate through an electro-deposition method to form a metal oxide coating, synthesizing nitrogen-doped anatase TiO2 nanoparticles through a solvothermal method and a heat treatment method, preparing slurry, dispensing the slurry on the surface of an electrode plate, performing hot pressing to enable the anode surface of the TiO2 catalyst slurry to be tightly bonded to obtain the doped nano TiO2 photo-anode plate; the technical defects that in the prior art, a photo-anode is short in service life and poor in catalytic performance are overcome.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic materials, in particular to a doped nano-TiO 2 Preparation method of photoanode plate. Background technique [0002] In the past few decades, the application of photocatalytic technology in wastewater treatment has received increasing attention. Due to the need to separate spent catalyst particles for slurry systems, numerous reports have involved the use of supported photocatalysts, especially those immobilized on conductive substrates, combining photocatalytic and electrolytic processes, and photoelectrocatalysis (PEC) has become A promising robust advanced oxidation process that involves the promotion of electrons from the valence band to the conduction band of semiconductor photocatalysts and generation of holes under light irradiation. In photoelectrocatalytic technology, the rapid recombination of formed electron / hole pairs can be avoided by applying an anode bias potential, which w...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/32C02F101/30
CPCC02F1/46109C02F1/32C02F1/4672C02F2001/46142C02F2101/30C02F2305/10Y02E10/542Y02W10/37
Inventor 关清卿张庚庚何亮庙荣荣宁平
Owner KUNMING UNIV OF SCI & TECH
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