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Preparation method for TiO2/BiOX nanometer photocatalyst powder

A nano-photocatalyst and powder technology, used in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of cheap and easy-to-obtain raw materials, strong degradation ability, and reduced reaction energy consumption

Inactive Publication Date: 2013-12-25
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

BiOX and rutile phase TiO have not been found in patents and literatures 2 Formation of compound semiconductor reports

Method used

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  • Preparation method for TiO2/BiOX nanometer photocatalyst powder
  • Preparation method for TiO2/BiOX nanometer photocatalyst powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0020] Rutile Phase TiO 2 / Low temperature preparation of BiOCl nano photocatalyst powder.

[0021] 1) Preparation of titanium precursor: adding titanium compound to alcohol solvent to form a titanium precursor with a concentration of 20 mol / L;

[0022] 2) Stir the titanium precursor formed in step 1) at room temperature for 3 h, then add deionized water, the volume ratio of deionized water to alcohol solvent is 1:5, and continue to stir evenly;

[0023] 3) Preparation of rutile phase nano-TiO 2 Powder: put the solution prepared in step 2) in an oven, heat at 80 °C for 48 h, wash the precipitated solution with water, and then dry at 80 °C to obtain rutile phase nano-TiO with a particle size of 100 nm 2 Powder;

[0024] 4) Preparation of alcohol solution of bismuth-containing compound: adding bismuth-containing compound powder into alcohol solvent to form alcohol solution of bismuth-containing compound with a concentration of 20 mol / L;

[0025] 5) The rutile phase T...

Embodiment approach 2

[0028] Rutile Phase TiO 2 / Low temperature preparation of BiOBr nano photocatalyst powder.

[0029] 1) Preparation of titanium precursor: adding titanium compound to alcohol solvent to form a titanium precursor with a concentration of 0.1 mol / L;

[0030] 2) Stir the titanium precursor formed in step 1) at room temperature for 0.1 h, then add deionized water, the volume ratio of deionized water to alcohol solvent is 1:1, and continue to stir evenly;

[0031] 3) Preparation of rutile phase nano-TiO 2 Powder: Put the solution prepared in step 2) in an oven, heat at 30°C for 12 h, wash the precipitated solution with water, and then dry at 30°C to obtain rutile phase nano-TiO with a particle size of 5 nm 2 Powder;

[0032] 4) Prepare the alcohol solution of the bismuth compound: add the powder of the bismuth compound into the alcohol solvent to form an alcohol solution of the bismuth compound with a concentration of 0.1mol / L;

[0033] 5) The TiO prepared in step 3) 2 T...

Embodiment approach 3

[0036] Rutile Phase TiO 2 / Low temperature preparation of BiOI nano photocatalyst powder.

[0037] 1) Preparation of titanium precursor: adding titanium compound to alcohol solvent to form a titanium precursor with a concentration of 10 mol / L;

[0038] 2) Stir the titanium precursor formed in step 1) at room temperature for 2 h, then add deionized water, the volume ratio of deionized water to alcohol solvent is 1:3, and continue to stir evenly;

[0039] 3) Preparation of rutile phase nano-TiO 2 Powder: put the solution prepared in step 2) in an oven, heat at 60 °C for 24 h, wash the precipitated solution with water, and then dry at 60 °C to obtain rutile phase nano-TiO with a particle size of 80 nm 2 Powder;

[0040] 4) Preparation of alcohol solution of bismuth-containing compound: adding bismuth-containing compound powder into alcohol solvent to form alcohol solution of bismuth-containing compound with a concentration of 10 mol / L;

[0041] 5) The TiO prepared in ...

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Abstract

The invention discloses a low-temperature preparation method for rutile-phase TiO2 / BiOX nanometer photocatalyst powder. The low-temperature preparation method comprises the following steps: step 1, adding a titanium compound into an alcohol solvent and mixing uniformly; adding a certain amount of distilled water and placing in a drying oven at a low temperature below 80 DEG C to generate sediments; then separating the sediments and washing the sediments by water; drying to obtain rutile-phase TiO2 powder; step 2, adding the prepared rutile-phase TiO2 powder into a bismuth-containing compound solution according to a certain molar ratio so as to obtain a mixture; placing the mixture in the drying oven at the low temperature below 80 DEG C to generate sediments; washing and drying the sediments to obtain the TiO2 / BiOX nanometer photocatalyst powder. The method is easy to operate, low in equipment requirements and small in energy consumption; the large-scale production is convenient to realize.

Description

technical field [0001] A kind of TiO of the present invention 2 The preparation method of / BiOX nano photocatalyst powder belongs to the field of semiconductor photocatalyst research, and specifically relates to a kind of rutile phase TiO 2 / Technical scheme of the low-temperature preparation method of BiOX (X=Cl, Br, I) nano photocatalyst powder. Background technique [0002] As a new type of semiconductor photocatalyst, BiOX (X=Cl, Br, I) exhibits certain photocatalytic ability due to its unique layered structure, but the single-phase BiOX is easy to recombine photogenerated electrons and holes. In order to improve the photocatalytic efficiency, many studies have been carried out to couple semiconductors to form composite structures with heterojunctions, which can effectively separate photogenerated electrons and holes to different parts of the catalyst. The semiconductor materials compounded with BiOX are: TiO 2 、 Bi 2 o 3 , AgI, WO 3 , among them, about BiOX and T...

Claims

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Application Information

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IPC IPC(8): B01J27/135
Inventor 樊彩梅朵芳芳李双志张小超候红串
Owner TAIYUAN UNIV OF TECH
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