Nonmetal doped titanium-based film electrode as well as preparation method and application thereof

A thin-film electrode and non-metallic technology, which is applied in the field of photoelectric catalysis of inorganic non-metallic materials, to achieve high photocatalytic efficiency, simple and easy-to-operate method, and strong adhesion

Active Publication Date: 2012-06-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-metal doped TiO 2 The method of preparing thin-film electrodes for photocatalytic degradation on conductive substrates has not been reported yet

Method used

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  • Nonmetal doped titanium-based film electrode as well as preparation method and application thereof
  • Nonmetal doped titanium-based film electrode as well as preparation method and application thereof
  • Nonmetal doped titanium-based film electrode as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1) Carbon-doped TiO 2 Preparation of particles: Ultrasonic mixing of glucose and titanium isopropoxide at a molar ratio of carbon to titanium of 0.05:1, under air conditions, the resulting mixed solution was kept stirring in a water bath at 30°C for 48 hours until the mixture became a powder state. Then put the powder in a muffle furnace and bake it at 400°C for 4 hours to get carbon-doped TiO 2 particles;

[0026] 2) TiO 2 Preparation of nanocrystals: At a stirring speed of 500 rpm, drop 4 mL of acetic acid into 40 mL of titanium isopropoxide, and continue stirring for 20 minutes, then add water at a uniform speed and heat to 80° C., and continue stirring for 30 minutes. Add nitric acid to adjust the pH value to 3, and then heat at 180°C for 12 hours to obtain TiO 2 Nanocrystalline milky liquid, in which TiO 2 The solid content is 20%;

[0027] 3) Preparation of carbon-doped titanium-based thin film electrodes: 0.5g carbon-doped TiO 2 Granules, 0.02g polyethylene...

Embodiment 2

[0030] 1) Iodine doped TiO 2 Preparation of particles: Ultrasonic mixing of elemental iodine and titanium isopropoxide at a ratio of iodine to titanium molar ratio of 0.1:1, under air conditions, the resulting mixed solution was stirred continuously in a water bath at 30°C for 48 hours until the mixture became a powder state. After that, put the powder in a muffle furnace and bake it at 500°C for 3 hours to obtain iodine-doped TiO 2 particles;

[0031] 2) with embodiment 1 step 2)

[0032] 3) Preparation of iodine-doped titanium-based thin film electrode: 0.5g iodine-doped TiO 2Granules, 0.01g polyethylene glycol 20000 and 1g TiO 2 After the milky liquid of nanocrystals is mixed and ground and dispersed evenly, deionized water is added to adjust the concentration to obtain TiO 2 The total solids content of the slurry is 15%. The slurry was uniformly coated on the ITO conductive glass substrate by a scalpel scraping method and dried at room temperature, and then the film w...

Embodiment 3

[0034] 1) Chlorine-doped TiO 2 Preparation of particles: Ultrasonic mixing of potassium chloride and titanium isopropoxide according to the ratio of chlorine to titanium molar ratio of 0.15:1, the resulting mixed solution was in contact with air, kept stirring in a water bath at 50°C for 48 hours until the mixture became powder state. Then put the powder in a muffle furnace and bake it at 550°C for 2 hours to get chlorine-doped TiO 2 particles;

[0035] 2) with embodiment 1 step 2)

[0036] 3) Preparation of chlorine-doped titanium-based thin film electrode: 0.5g chlorine-doped TiO 2 Granules, 0.01g sodium cellulose and 1g TiO 2 After the milky liquid of nanocrystals is mixed and ground and dispersed evenly, deionized water is added to adjust the concentration to obtain TiO 2 The total solid content of the slurry is 20%. The slurry was uniformly coated on the ITO conductive glass substrate by a scalpel scraping method and dried at room temperature, and then the film was ...

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PUM

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Abstract

The invention provides a nonmetal doped titanium-based film electrode as well as a preparation method and an application thereof and belongs to the photoelectric catalysis technical field of inorganic nonmetal materials. The preparation method comprises the following steps of: mixing and reacting an elementary substance or compound of a nonmetal element with titanium isopropoxide to prepare nonmetal doped TiO2 particles; preparing TiO2 nanocrystals; mixing the nonmetal doped TiO2 particles and a pore-forming agent with the TiO2 nanocrystal emulsion to prepare latex and coating; and then carrying out thermal treatment. The nonmetal doped titanium-based film electrode prepared by using the method is used for photoelectrocatalysis degradation of pollutants in water, such as paint, phenols, aldehydes, medicaments or heavy metal ions. The electrode provided by the invention has the advantages of visible light response, large specific surface area and strong adhesive power with a substrate.

Description

technical field [0001] The invention belongs to the technical field of photoelectric catalysis of inorganic non-metallic materials, and in particular relates to a non-metal doped titanium-based film electrode applied to photoelectric catalysis, a preparation method and an application thereof. Background technique [0002] At present, the commonly used technologies for removing harmful substances in wastewater generally include physical adsorption, coagulation, and air flotation. These methods are to transfer organic pollutants from liquid phase to solid phase, which will cause a series of new environmental problems such as secondary pollution and regeneration of adsorbent and coagulant. Although general chemical, biochemical and other treatment technologies can decompose organic pollutants, their cleanliness is low, and the treated wastewater cannot meet the national wastewater discharge standards. In 1972, Fujishima et al. (Fujishima A., Honda K. Electrochemical photolysis...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/30
CPCY02W10/37
Inventor 陶霞李昕陈建峰
Owner BEIJING UNIV OF CHEM TECH
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