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Preparation of air purifier for visible light responded titanium dioxide photocatalytic chamber

A technology of titanium dioxide and indoor air, which is applied in the field of preparation of indoor air purifier visible light-responsive titanium dioxide photocatalyst, which can solve the problems of weak and weak air purification effect

Inactive Publication Date: 2005-02-23
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ultraviolet light component in the indoor light is very weak, and the application of unmodified titanium dioxide to indoor air purification has little effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] a. First prepare a kinetically stable titanium dioxide ultrafine particle aqueous solution:

[0016] Slowly add 3.5 grams of hydrolyzable titanium-containing compound titanium tetrachloride into 200ml of deionized water at 1°C, and under the action of ultrasonic waves, the hydrolyzable titanium-containing compound is hydrolyzed and dispersed into a particle size of 10 nanometers -9 For rice-level ultrafine particles, the aqueous solution of ultrafine particles is clarified and transparent under visible light for use;

[0017] b. Add the rare metal solution containing lanthanum and cerium with an atomic ratio of 0.7:0.7 into the transparent ultrafine particle solution for uniform mutual dissolution, stir for 1 hour, and set aside;

[0018] c. Add the manganese-containing solution of the transition metal oxide with an atomic ratio of 1.0 to the solution obtained in step b to dissolve evenly, stir for 1 hour, and set aside;

[0019] d. Evaporate the solution obtained in s...

Embodiment 2

[0021] a. First prepare a kinetically stable titanium dioxide ultrafine particle aqueous solution:

[0022] Slowly add 4 grams of hydrolyzable titanium-containing compound tetraalkoxytitanium into 285ml of deionized water at 15°C, and under the action of ultrasonic waves, the hydrolyzable titanium-containing compound is hydrolyzed and dispersed into a particle size of 10 nanometers -9 For rice-level ultrafine particles, the aqueous solution of ultrafine particles is clarified and transparent under visible light for use;

[0023] b. Add the rare metal solution containing lanthanum and cerium with an atomic ratio of 1.0:1.0 into the transparent ultrafine particle solution for uniform mutual dissolution, stir for 1.5 hours, and set aside;

[0024] c. Add the iron-containing solution of the transition metal oxide with an atomic ratio of 0.9 to the solution obtained in step b to dissolve evenly, stir for 1.5 hours, and set aside;

[0025] d. Evaporate the solution obtained in step...

Embodiment 3

[0027] a. First prepare a kinetically stable titanium dioxide ultrafine particle aqueous solution:

[0028] Slowly add 4.3 grams of hydrolyzable titanium-containing compound titanium tetrachloride into 220ml of deionized water at 10°C. Under the action of ultrasonic waves, the hydrolyzable titanium-containing compound is hydrolyzed and dispersed into a particle size of 10 nanometers. -9 For rice-level ultrafine particles, the aqueous solution of ultrafine particles is clarified and transparent under visible light for use;

[0029] b. Add the rare metal solution containing lanthanum and cerium with an atomic ratio of 1.2:1.2 into the transparent ultrafine particle solution for uniform mutual solubility, stir for 2 hours, and set aside;

[0030] c. Add the cobalt-containing solution of the transition metal oxide with an atomic ratio of 0.7 to the solution obtained in step b to dissolve evenly, stir for 2 hours, and set aside;

[0031] d. Evaporate the solution obtained in step ...

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Abstract

A visual light responsive TiO2 photocatalyst for cleaning indoor air is prepared from the efficient self-cleaning TiO2 paint used for external wall through proportionally mixing it with the oxide system of rare metal and transition metal to form the metal / TiO2 heterojunction and modify the TiO2, which can be activated by visual light to clean indoor air.

Description

technical field [0001] The invention relates to a preparation method of an indoor air purifier visible light responsive titanium dioxide photocatalyst. Background technique [0002] Titanium dioxide photocatalyst is used as indoor air purifier, and its convenience and safety are gradually highlighted. Commonly used air fresheners just cover up the irritating smell in the air, rather than completely remove the harmful substances of the pungent smell that are sent, and do not have the effect of purifying the air in essence. Titanium dioxide photocatalyst has high-efficiency deep oxidation, which can completely oxidize the organic gas pollutants and bacteria contained in the indoor air into carbon dioxide and water, and is non-toxic. These two are the reason why titanium dioxide photocatalyst has been paid more and more attention as an indoor purifier. s reason. [0003] The main component of the titanium dioxide photocatalyst used as an indoor purifier i...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01J21/06B01J23/00B01J37/02
Inventor 张政委高林田华向迎梅陈志祥王旭
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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