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Method for preparing titanium oxide based photocatalysis material

A photocatalytic material, titanium oxide technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of not achieving good photocatalytic effect, and achieve the effect of effective degradation

Inactive Publication Date: 2006-03-29
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Another object of the present invention is to overcome the defect that the use of a single metal to dope and modify titanium oxide-based photocatalytic materials cannot achieve good photocatalytic effects. For example, doping iron and neodymium double metal ions can make the two metal ions Titanium dioxide produces a synergistic effect that a single metal does not have, thereby obtaining a titanium oxide-based photocatalyst material with good photocatalytic effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, (iron neodymium doping experiment)

[0025] Prepare ferric nitrate absolute ethanol solution 8g / L to obtain solution B, neodymium nitrate absolute ethanol solution 4g / L to obtain solution C, add solution B20ml, solution C20ml, concentrated nitric acid 5ml, tetrabutyl titanate 25ml to 150ml absolute ethanol , stirred vigorously to obtain solution D; under the condition of vigorous stirring, 35ml of deionized water was added dropwise to solution D, and the vigorous stirring was continued for 3 hours to obtain sol E; Sol E was dried at 70°C for 48 hours to obtain powder F; The powder F was calcined at 500° C. for 2 hours to obtain a titanium oxide-based photocatalytic material doped with two kinds of metal ions. Under the same conditions, no metal ions are added, that is, undoped titanium dioxide powder is obtained.

[0026] Photocatalytic degradation of methylene blue was carried out using powders doped and undoped with metal ions, with two 20W ultraviolet ...

Embodiment 2

[0027] Embodiment 2, (iron and other metal ion doping experiments)

[0028] Prepare ferric sulfate absolute ethanol 0.03125mol / L solution to obtain solution B, M2 absolute ethanol solution 0.03125mol / L to obtain solution C, add solution B10ml, solution C10ml, concentrated nitric acid 5ml, tetrabutyl titanate to 150ml absolute ethanol 25ml, vigorously stirred to obtain solution D; under the condition of vigorous stirring, 35ml of deionized water was added dropwise to solution D, and the vigorous stirring was continued for 3 hours to obtain sol E; Sol E was dried at 70°C for 48 hours to obtain powder F; The powder F was calcined at 500° C. for 2 hours to obtain a titanium oxide-based photocatalytic material doped with two kinds of metal ions. Under the same conditions, no metal ions are added, that is, undoped titanium dioxide powder is obtained.

[0029] Photocatalytic degradation of methylene blue was carried out using powders doped and undoped with metal ions. Two 20W ultrav...

Embodiment 3

[0031] Embodiment 3, (neodymium and other metal ion doping experiments)

[0032] Prepare M1 dehydrated ethanol solution 0.3125mol / L to obtain solution B, neodymium nitrate dehydrated ethanol solution 0.3125mol / L to obtain solution C, add 5ml concentrated nitric acid, 25ml tetrabutyl titanate, and B solution to 150ml dehydrated ethanol, C solution 1ml, vigorously stirred to obtain solution D; under the condition of vigorous stirring, add 30ml of deionized water to solution D, and continue to stir vigorously for 3 hours to obtain sol E; dry sol E at 70°C for 48 hours to obtain powder F ; The powder F was baked at 500° C. for 2 hours to obtain a titanium oxide-based photocatalytic material doped with two kinds of metal ions. Under the same conditions, no metal ions are added, that is, undoped titanium dioxide powder is obtained.

[0033] The photocatalytic degradation of methylene blue was carried out using titanium dioxide powder doped and undoped with metal ions. Two 20W ultra...

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Abstract

A process for preparing the titanium oxide-based photocatalyst used to degradate the polltents in water and air features that two kinds of metallic ions are doped in the procedure of preparing TiO2 powder or film.

Description

technical field [0001] The invention belongs to the technical field of semiconductor photocatalytic materials, in particular to a preparation method of titanium oxide-based photocatalytic materials. Background technique [0002] Semiconductor photocatalysis technology uses ultraviolet light to irradiate photocatalytically active semiconductor materials to initiate photocatalytic reactions. TiO 2 Photocatalytic material is a semiconductor photocatalytic material that has received extensive attention in recent years. A large number of studies have shown that dyes, surfactants, organic halides, pesticides, oils, cyanides, etc. can be destroyed by TiO 2 Effectively complete photocatalytic degradation, decolorization, detoxification, and mineralization into small inorganic molecules, thereby eliminating environmental pollution. In addition, TiO 2 The photocatalytic reaction is also non-toxic, high catalytic activity, strong oxidation ability, good stability, mild reaction con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J37/03
Inventor 栾勇傅平丰戴学刚
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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