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Rare earth doped spherical nano titanium dioxide preparation method

A nano-titanium dioxide, titanium dioxide technology, applied in titanium dioxide, titanium oxide/hydroxide, nanotechnology for materials and surface science, etc., can solve problems such as low efficiency and long preparation cycle of nano-titanium dioxide, to improve efficiency and improve The effect of preparation efficiency

Inactive Publication Date: 2017-06-13
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the problems of long preparation period and low efficiency of nano-titanium dioxide existing in the prior art, and to provide a preparation method of spherical nano-titanium dioxide doped with rare earth

Method used

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  • Rare earth doped spherical nano titanium dioxide preparation method
  • Rare earth doped spherical nano titanium dioxide preparation method
  • Rare earth doped spherical nano titanium dioxide preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A preparation method of titanium dioxide doped with rare earth, the specific steps are as follows:

[0048] (1) Tetrabutyl titanate and absolute ethanol are mixed according to a volume ratio of 1:4 to obtain an absolute ethanol solution of tetrabutyl titanate, wherein the volume of tetrabutyl titanate is 5ml;

[0049] (2) Mix deionized water, absolute ethanol, and concentrated nitric acid by volume ratio 0.6:1:0.2 to obtain a mixed solution, and the volume of absolute ethanol used in this step is 5ml;

[0050] (3) adding cerium nitrate to the mixed solution obtained in step (2) and fully mixing;

[0051] (4) Under vigorous stirring, add the product obtained in step (3) dropwise to the absolute ethanol solution of tetrabutyl titanate obtained in step (1) to obtain a sol; In terms of the titanium element in the ester and the cerium element in the cerium nitrate, the mol ratio of the cerium nitrate added in the step (3) to tetrabutyl titanate is 0.01%;

[0052] (5) Put the...

Embodiment 2

[0056] A preparation method of titanium dioxide doped with rare earth, the specific steps are as follows:

[0057] (1) Tetrabutyl titanate and absolute ethanol are mixed according to a volume ratio of 1:5 to obtain an absolute ethanol solution of tetrabutyl titanate, wherein the volume of tetrabutyl titanate is 5ml;

[0058] (2) Mix deionized water, absolute ethanol, and concentrated nitric acid in a volume ratio of 1:1:0.4 to obtain a mixed solution, and the volume of absolute ethanol used in this step is 5ml;

[0059] (3) adding cerium nitrate to the mixed solution obtained in step (2) and fully mixing;

[0060] (4) Under vigorous stirring, add the product obtained in step (3) dropwise to the absolute ethanol solution of tetrabutyl titanate obtained in step (1) to obtain a sol; In terms of the titanium element in the ester and the cerium element in the cerium nitrate, the mol ratio of the cerium nitrate added in the step (3) to tetrabutyl titanate is 0.1%;

[0061] (5) Put...

Embodiment 3

[0065] A preparation method of titanium dioxide doped with rare earth, the specific steps are as follows:

[0066] (1) Tetrabutyl titanate and absolute ethanol are mixed according to a volume ratio of 1:5 to obtain an absolute ethanol solution of tetrabutyl titanate, wherein the volume of tetrabutyl titanate is 5ml;

[0067] (2) Mix deionized water, absolute ethanol, and concentrated nitric acid by volume ratio 1.4:1:0.6 to obtain a mixed solution, and the volume of absolute ethanol used in this step is 5ml;

[0068] (3) adding cerium nitrate to the mixed solution obtained in step (2) and fully mixing;

[0069] (4) Under vigorous stirring, add the product obtained in step (3) dropwise to the absolute ethanol solution of tetrabutyl titanate obtained in step (1) to obtain a sol; In terms of the titanium element in the ester and the cerium element in the cerium nitrate, the mol ratio of the cerium nitrate added in the step (3) to tetrabutyl titanate is 0.7%;

[0070] (5) Put th...

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Abstract

The invention provides a rare earth doped spherical nano titanium dioxide preparation method. The method includes: (1) mixing organic titanate with alcohol to obtain alcoholic solution of organic titanate, wherein a volume of organic titanate is 5ml; (2) mixing deionized water, alcohols and acids to obtain mixed solution; (3) adding rare earth salts into the mixed solution obtained at the step (2), and well mixing; (4) under intense stirring, dropwise adding a product obtained at the step (3) into the alcoholic solution, obtained at the step (1), of organic titanate; (5) adding a final product obtained at the step (4) into a reactor, heating to 120-180 DEG C, and keeping the temperature for 6h; (6) subjecting a product obtained at the step (5) to centrifugal washing, and drying in a drying oven at 60 DEG C for 24h; (7) grinding a product obtained at the step (6), and calcining in a high-temperature furnace at a high temperature of 450 DEG C for 2h. The rare earth doped spherical nano titanium dioxide preparation method has the advantage that ano titanium dioxide preparation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of preparation of nano photocatalyst semiconductors, and relates to a method for preparing spherical nano titanium dioxide doped with rare earth salts. Background technique [0002] In recent years, society has developed faster and faster, productivity has become more and more developed, and there are more and more various manufacturers. While the establishment of these factories brings more and more material abundance to people, it also makes environmental problems more and more serious. Atmospheric, soil, water pollution and other issues are increasingly perplexing people and have aroused great concern from the society. Among them, the problem of water pollution has aroused people's concern in particular. [0003] Many scientific researchers began to look for some non-toxic, low-cost, and recyclable catalysts for degrading pollutants in water to degrade and treat some pollutants in water bodies. Among them, the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/08B82Y30/00B82Y40/00
CPCC01G23/08B82Y30/00B82Y40/00C01P2004/04C01P2004/32C01P2004/64C01P2004/80
Inventor 宁维坤丁庆杰甄冉
Owner JILIN UNIV
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