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Titanium dioxide photocatalysis material and preparation method thereof

A photocatalytic material, titanium dioxide technology, applied in the field of photocatalysis, can solve problems such as low photocatalytic efficiency

Active Publication Date: 2015-06-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem of low photocatalytic efficiency existing in existing titanium dioxide photocatalytic materials, thereby providing a titanium dioxide photocatalytic material with high photocatalytic efficiency and a preparation method thereof

Method used

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Examples

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Effect test

preparation example Construction

[0022] The present invention also provides a method for preparing the modified titanium dioxide photocatalytic material of the present invention, the method comprising the following steps:

[0023] S1. Mix titanium salt, citric acid and solvent, add iron salt and cesium salt after the first grinding, add plasticizer after the second grinding, and grind for the third time to obtain the first colloid;

[0024] S2. Add vanadium salt, cobalt salt, lanthanum salt, rubidium salt, nickel salt and boric acid to the colloid, place it after grinding for the fourth time, and obtain the second colloid;

[0025] S3, drying the second colloid, grinding, debinding and pre-sintering;

[0026] S4, ball milling the sintered material in step S3 to obtain powder;

[0027] S5, drying the powder after ball milling;

[0028] S6, adding the dried powder into a connecting agent, mixing evenly and putting it into a mold for pressing;

[0029] S7, placing the pressed sample on a setter and sintering...

Embodiment 1

[0043] 1. Preparation of modified titanium dioxide photocatalytic materials

[0044] 1. Take appropriate amount of TiCl 4 , citric acid and a small amount of solvent, grind for 10 minutes and add an appropriate amount of FeCl 3 and CeCl 3 , continue to grind for 10 minutes, then add an appropriate amount of PEG to grind for 8 minutes to obtain the first colloid;

[0045] 2. Continue to add an appropriate amount of VCl to the first colloid 3 、CoCl 2 、LaCl 3 , NdCl 3 、NiCl 2 and H 3 BO 3 , after grinding for 30 minutes, place it for one day to obtain the second colloid;

[0046] 3. Dry the second colloid, grind it into pieces, put it into an open burning boat, deglue and sinter in the debinding furnace, the heating rate is 1°C / min, the sintering temperature is 650°C, and the holding time is 4h;

[0047] 4. After the furnace temperature is cooled, put the sintered product into a ball mill tank, add solvent and dispersant for ball mill refinement: the speed is 400r / min, ...

Embodiment 2-14

[0056] According to the method of Example 1, modified titanium dioxide photocatalytic materials A2-A14 and photocatalytic glasses B2-B14 were prepared.

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Abstract

The invention provides a modified titanium dioxide photocatalysis material. The modified titanium dioxide photocatalysis material comprises titanium dioxide and doping elements, and the doping elements comprise Fe, Ce, B, Ni, V, Co, La and Nd; and a molar ratio of Fe to V is 0.01-10:1, and a molar ratio of Ce to Co is 0.1-10:1. The invention also provides a preparation method of the modified titanium dioxide photocatalysis material, a photocatalysis glass containing the modified titanium dioxide photocatalysis material, and a preparation method of the photocatalysis glass. The modified titanium dioxide photocatalysis material has a very good photocatalysis effect on formaldehyde, amines and toluene.

Description

technical field [0001] The invention belongs to the field of photocatalysis, and in particular relates to a titanium dioxide photocatalytic material and a preparation method thereof. Background technique [0002] Photocatalytic technology is a chemical reaction under the action of light. Photochemical reactions require molecules to absorb electromagnetic radiation of a specific wavelength, and are excited to generate molecular excited states, which then undergo chemical reactions to generate new substances, or become intermediate chemical products that trigger thermal reactions. The activation energy of photochemical reactions comes from the energy of photons. In the utilization of solar energy, photoelectric conversion and photochemical conversion have always been very active research fields. [0003] Titanium dioxide photocatalyst has become a commonly used photocatalyst due to its high catalytic activity, strong oxidation ability, good stability, and mild reaction condit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/847
Inventor 陈大军孔宪君王绍隆
Owner BYD CO LTD
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