Method for synthesizing non-aqueous system zirconium doping nano anatase titanium dioxide

A technology of titanium dioxide and nano-anatase, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of long reaction time and complicated preparation process, and achieve the effect of simple operation, simple process and high side value

Inactive Publication Date: 2008-04-23
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because these methods need to control the hydrolysis of the titanium precursor, the preparation process is very complicated, and the reaction time is long, and the obtained TiO 2 High temperature post-treatment is required to obtain crystallized TiO 2

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Mix formic acid and tetra-n-butyl titanate at a molar ratio of 4:1, then add zirconium isopropoxide to the above mixture according to the molar ratio of zirconium isopropoxide to tetra-n-butyl titanate as 2:1, and stir After mixing, transfer to a reaction kettle, react at 120°C for 12 hours, wash the reactant three times with ethanol, and then dry at 100°C to obtain a zirconium-doped anatase titanium dioxide material.

Embodiment 2

[0016] Mix acetic acid and tetra-n-butyl titanate at a molar ratio of 10:1, then add zirconium isopropoxide to the above mixture according to the molar ratio of zirconium isopropoxide to tetra-n-butyl titanate at a molar ratio of 0.5:1, and stir After mixing, transfer to a reaction kettle, react at 120°C for 12 hours, wash the reactant with ethanol four times, and then dry at 100°C to obtain a zirconium-doped anatase titanium dioxide material.

Embodiment 3

[0018] Mix n-butyric acid and tetra-n-butyl titanate at a molar ratio of 2:1, and then add zirconium isopropoxide to the above mixture according to the molar ratio of zirconium isopropoxide to tetra-n-butyl titanate as 0.3:1 , stirred and mixed, transferred to a reaction kettle, reacted at 160°C for 14 hours, washed the reactant three times with ethanol, and then dried at 120°C to obtain a zirconium-doped anatase titanium dioxide material.

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PUM

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Abstract

This invention discloses a method for synthesizing nanometer anatase titanium dioxide doped by non-aquo zirconium. In this method, C1-C9 organic acid (1), tetrabutyl titanate (2) and zirconium isopropoxide (3) are used as raw materials with molar ratio of: (1):(2)=(2-20):1, After mixing the mixture is put in a reactor, heating to 80-240deg.C for reaction for 8-24hrs, and then is washed by ethanol for 3-5times, being dried under 80-160 deg.C to obtain this inventive product. This invention has advantages of: simple process, convenient operation, mild reaction condition, high yield, high crystallinaty of final product, high specific surface area and small graininess.

Description

technical field [0001] The invention belongs to a preparation method of zirconium-doped titanium dioxide, specifically preparing zirconium-doped anatase titanium dioxide in a non-aqueous system. technical background [0002] TiO as one of semiconductor photocatalysts 2 Photocatalytic materials are currently the most researched new type of environmentally friendly materials, and the properties of photocatalysts are the key factors in the photocatalytic oxidation process. TiO 2 The crystal form, grain size and particle diameter, surface state and other factors have a great influence on its photocatalytic performance. Nanoparticles with large surface area have good catalytic activity and selectivity due to their surface effect and volume effect. Nano-TiO 2 Due to its quantum size effect, the conduction band and valence band energy levels become discrete energy levels, the energy gap widens, the conduction band potential becomes more negative, and the valence band potential ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053
Inventor 孙予罕姜东徐耀吴东
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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