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Preparation method of rutile type titanium dioxide nano particle

A nanoparticle, titanium dioxide technology, applied in the direction of titanium dioxide, nanostructure manufacturing, titanium oxide/hydroxide, etc., can solve the problems of complex synthesis process, difficult to control conditions, serious environmental pollution, etc., and achieve simple equipment, low cost, no Effects of Environmental Pollution

Inactive Publication Date: 2011-06-15
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above methods have the disadvantages of relatively complex synthesis process, difficult control conditions, serious environmental pollution, high carbon emissions, and narrow application range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A preparation method of titanium dioxide nanoparticles, comprising the steps of:

[0018] Step 1. Take one of titanium sulfate, titanyl sulfate or titanium chloride as a titanium source, and its mass fraction is 3 to 6 parts; take one of sulfuric acid or hydrochloric acid solution, and its mass fraction is 10 to 27 The concentration should ensure that the pH of the solution is less than or equal to 0, and the greater the concentration, the larger the final titanium dioxide nanoparticle particles will be; the two selected raw materials are mixed and dissolved to make a titanium source dispersion solution for subsequent use;

[0019] Step 2, get a kind of in sodium hydroxide or potassium hydroxide as alkali source, and its mass fraction is 2.8~16 parts; Get a kind of in sodium sulfate, potassium sulfate, sodium chloride or potassium chloride solution, its The number of parts by mass is 20-60 parts, the concentration is ≥0.1mol / L, the greater the concentration is, the larg...

Embodiment 1

[0030] A preparation method of titanium dioxide nanoparticles, comprising the steps of:

[0031] Step 1 Get 6 mass parts of titanium sulfate (Ti(SO 4 ) 2 ); take H 2 SO 4 :H 2 27 parts by mass of sulfuric acid solution of O=1:4; adding the titanium sulfate taken into the sulfuric acid solution, stirring and dissolving to obtain the titanium source dispersion solution, and set aside;

[0032] Step 2 Get 11.2 parts by mass of sodium hydroxide (NaOH); get 60 parts by mass of sodium sulfate (NaOH) whose concentration is 0.1mol / L 2 SO 4 ) solution; the sodium hydroxide taken is added to the sodium sulfate solution, stirred and dissolved, and the alkali source dispersion solution is obtained, which is set aside;

[0033] Step 3 Transfer the prepared alkali source dispersion solution to the reactor, heat it evenly to 60°C with an oil bath during the stirring process, then add the titanium source dispersion solution into the alkali source dispersion solution, and a white precipi...

Embodiment 2

[0039] A preparation method of titanium dioxide nanoparticles, comprising the steps of:

[0040] Step 1: 6 parts (mass parts, hereinafter all the same) titanium sulfate (Ti(SO 4 ) 2 ) into 27 parts of sulfuric acid solution, stirred and dissolved to obtain the titanium source dispersion solution for subsequent use; in the sulfuric acid solution, H 2 SO 4 (concentrated): H 2 O=1︰4.

[0041] Step 2 Add 15.7094 parts of potassium hydroxide (KOH) to 20 parts of potassium sulfate (KOH) with a concentration of 1.5mol / L 2 SO 4 ) solution, stirring and dissolving to obtain the alkali source dispersion solution, and set aside;

[0042] Step 3 Place the prepared alkali source dispersion solution in the reactor, heat it evenly to 95°C, and then add the titanium source dispersion solution to the alkali source dispersion solution. During the reaction, a white precipitate is formed. The reaction time is 24 hours. The reacted mixture is sent to a centrifuge, centrifuged, the separated...

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Abstract

The invention provides a preparation method of a titanium dioxide nano particle, and relates to the field of inorganic nonmetallic nano material preparation. The preparation method comprises the following steps: firstly preparing a titanium source dispersion solution and an alkali source dispersion solution; heating the alkali source dispersion solution to 60-95 DEG C, then admixing the alkali source solution with the titanium source dispersion solution to be subject to a reaction for 1-24 hours, carrying out centrifugal separation on the mixture after the reaction, uniformly mixing the separated precipitate with distilled water, ethanol aqueous solution and absolute ethyl alcohol sequentially, then carrying out centrifugal separation, sending to a drying box to dry so as to obtain the titanium dioxide nano particle. The invention has the advantages of low cost, no toxicity, no harm, cycle use of the raw materials, no environmental pollution, simple device and easily-mastered operating condition, and facilitates large scale production; and the size distribution range of the prepared nano particle is narrow, and the particle size can be controlled by adjusting the concentration, the reaction time and the reaction temperature of various used solutions.

Description

technical field [0001] The invention relates to a method for preparing inorganic nanometer materials, in particular to a method for preparing titanium dioxide nanoparticles. Background technique [0002] Titanium dioxide (TiO 2 ) is a polymorphic compound that is non-toxic and harmless to the human body. It has three crystal forms, brookite, anatase and rutile, of which rutile TiO 2 The most stable structure, the most widely used. Nano rutile TiO 2 Because of its small particle size and large specific surface area, it has strong hiding power, coloring power and ability to absorb ultraviolet rays. It is widely used in anti-sun cosmetics, advanced paints, coatings, textiles, fine ceramics and other fields, and has a high commercial value. value. At the same time, nano-rutile TiO 2 It has functions such as surface effect, quantum size effect and macroscopic quantum tunneling effect, so it exhibits excellent chemical corrosion resistance, photocatalytic activity and anti-ul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/047B82B3/00
Inventor 马录芳常新红李冠峰康海霞李森兰王利亚
Owner LUOYANG NORMAL UNIV