Nano titanium dioxide with weak light catalysis function and preparation method thereof

A nano-titanium dioxide, low-light technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Solubility and other problems, to achieve the effect of increasing reflection and refraction, improving absorption, and high water dispersibility

Inactive Publication Date: 2019-04-16
深圳市至霸化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Under normal circumstances, ordinary titanium dioxide has a wide band gap (3.2eV for anatase and 3.0eV for rutile), and such a high energy band width can only be excited by ultraviolet light or higher-energy visible light, which seriously reduces The utilization efficiency of titanium dioxide to light energy
At the same time, due to the low solubility of titanium dioxide nanopowders, it is greatly limited in practical applications.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] A preparation method of nano-titanium dioxide with weak photocatalysis, comprising the steps of:

[0019] S1: rutile nano-TiO 2 Preparation of particles: Pipette 10ml of butyl titanate into a beaker, then add 4ml of butanol, place the beaker on a magnetic stirrer for about 1 hour, then place it on a magnetic stirrer and stir at room temperature for about After 12 hours, the stirred solution was transferred to a stainless steel reactor, and kept at 120°C for 4 hours for hydrothermal reaction;

[0020] S2:TiO 2 Preparation of nanotubes: Weigh 0.05 g of the prepared titanium dioxide nanoparticles and disperse them in 20 ml of NaOH solution. The NaOH solution is 10 mol. In a high-pressure reactor, then seal the reactor and put it in an oven, heat it at 110°C for about 12 hours, take it out and cool it to room temperature naturally;

[0021] S3: TiO doped with precious metal gold 2 Preparation of nanotubes: the prepared TiO 2 Add 0.02 g of nanotubes into 20 ml of aqueou...

Embodiment 1

[0024] S1: rutile nano-TiO 2 Preparation of particles: Pipette 10ml of butyl titanate into a beaker, then add 4ml of butanol, place the beaker on a magnetic stirrer for about 1 hour, then place it on a magnetic stirrer and stir at room temperature for about After 12 hours, the stirred solution was transferred to a stainless steel reactor, and kept at 120°C for 4 hours for hydrothermal reaction;

[0025] S2:TiO 2 Preparation of nanotubes: Weigh 0.05 g of the prepared titanium dioxide nanoparticles and disperse them in 20 ml of NaOH solution. The NaOH solution is 10 mol. In a high-pressure reactor, then seal the reactor and put it in an oven, heat it at 110°C for about 12 hours, take it out and cool it to room temperature naturally;

[0026] S3: TiO doped with precious metal gold 2 Preparation of nanotubes: the prepared TiO 2 Add 0.02 g of nanotubes into 20 ml of aqueous solution containing 10 ml of thioglycolic acid, stir with a magnetic stirrer for 30 minutes, and then add...

Embodiment 2

[0028] S1: rutile nano-TiO 2 Preparation of particles: Pipette 10ml of butyl titanate into a beaker, then add 4ml of butanol, place the beaker on a magnetic stirrer for about 1 hour, then place it on a magnetic stirrer and stir at room temperature for about 12 h, after stirring with a magnetic stirrer, with 200 ml of deionized water and 0.3 mol of HNO 3 Adjust the acidity of the solution, the pH value of the deionized water is 3, then transfer the stirred solution to a stainless steel reaction kettle, keep it warm at 120°C for 4 hours for hydrothermal reaction, and centrifuge the sample with a centrifuge after the hydrothermal reaction Come out, and use ultrasonic cleaning for 30 minutes, then dry the obtained sample at 45°C for 24 hours, and take it out for use;

[0029] S2:TiO 2 Preparation of nanotubes: Weigh 0.05 g of the prepared titanium dioxide nanoparticles and disperse them in 20 ml of NaOH solution. The NaOH solution is 10 mol. In a high-pressure reactor, then sea...

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Abstract

The invention discloses nano titanium dioxide with a weak light catalysis function and a preparation method thereof. The preparation method of the nano titanium dioxide with the weak light catalysis function includes the following steps that S1, rutile type nano TiO2 particles are prepared, wherein 10 ml of butyl titanate is transferred into a beaker, then 4 ml of butanol is added, the beaker is arranged on a magnetic stirrer for magnetic stirring for about 1 hour, the beaker is put on the magnetic stirrer for stirring for about 12 hours under the room temperature condition, and then the stirred solution is transferred into a stainless steel reaction still. The prepared nano titanium dioxide has the advantage of being high in water dispersibility, the principle of a light emitting diode issimulated, by means of doped precious metal and rare metal ions, reflection and refraction of natural light are improved, PN bonds are formed by titanium dioxide and dopants, the recombination effectof conduction band electrons and energy band holes is effectively separated, thus, absorption of the nano titanium dioxide under weak light is improved, and meanwhile a better photocatalysis effect is also achieved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to nano-titanium dioxide with weak photocatalysis and a preparation method thereof. Background technique [0002] As an important inorganic functional material, nano-titanium dioxide has shown excellent performance in many fields, so its application prospect is also very broad. Nanomaterial is a new type of material developed in recent years, which has the characteristics of high catalytic performance and high surface activity. Compared with titanium dioxide powder, titanium dioxide nanomaterials also exhibit many excellent properties, and have become a research hotspot at home and abroad in recent years. Among titanium dioxide nanomaterials, titanium dioxide nanofilms, titanium dioxide modified materials, and their preparation structures, phase transitions, and photocatalytic properties have been studied more. Titanium dioxide nanotubes are a kind of titanium dio...

Claims

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Application Information

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IPC IPC(8): B01J23/52
CPCB01J23/52B01J35/39
Inventor 胡志明
Owner 深圳市至霸化工有限公司
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