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Synthesis method of high-activity TiO2 nanodisk photocatalyst

A technology of photocatalyst and synthesis method, applied in chemical instruments and methods, physical/chemical process catalyst, chemical/physical process, etc., to achieve the effects of high photocatalytic activity, simple and easy preparation process, and high-efficiency photocatalytic performance

Active Publication Date: 2013-10-02
徐州大晶新材料科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The control of the exposure ratio of the high-energy surface is a very challenging task

Method used

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  • Synthesis method of high-activity TiO2 nanodisk photocatalyst
  • Synthesis method of high-activity TiO2 nanodisk photocatalyst
  • Synthesis method of high-activity TiO2 nanodisk photocatalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Take 6g of water, add 0.5g of hydrofluoric acid and 30.03g of glacial acetic acid with a mass fraction of 40%, and then add 1.71g of tetrabutyl titanate (Ti:H 2 O molar ratio = 1:70), stir evenly, put into the reaction kettle and heat at 180°C for 24h, separate the precipitate, wash the precipitate with water for 3 times, dry at 60°C, and calcined at 600°C for 2h; naturally cool to room temperature to obtain high activity TiO 2 Nanodisk photocatalyst.

Embodiment 2

[0032] Take 4.2g of water, add 0.5g of hydrofluoric acid and 30.03g of glacial acetic acid with a mass fraction of 40%, and then add 1.71g of tetrabutyl titanate (Ti:H 2 O molar ratio = 1:50), stir evenly, put into the reaction kettle and heat at 180°C for 24h, separate the precipitate, wash the precipitate with water for 3 times, dry at 60°C, and calcined at 600°C for 2h; naturally cool to room temperature to obtain high activity TiO 2 Nanodisk photocatalyst.

Embodiment 3

[0034] Take 8.7g of water, add 0.5g of hydrofluoric acid and 30.03g of glacial acetic acid with a mass fraction of 40%, and then add 1.71g of tetrabutyl titanate (Ti:H 2 O molar ratio = 1:50), stir evenly, put into the reaction kettle and heat at 180°C for 24h, separate the precipitate, wash the precipitate with water for 3 times, dry at 60°C, and calcined at 600°C for 2h; naturally cool to room temperature to obtain high activity TiO 2 Nanodisk photocatalyst.

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Abstract

The invention provides a synthesis method of a high-activity TiO2 nanodisk photocatalyst. The method is simple and easy to implement, and has the advantages of favorable repeatability and high stability; and the prepared {001}-surface-exposed TiO2 nanodisk photocatalyst has the advantages of novel structure and high photocatalytic activity. The method comprises the following steps: 1) mixing water with glacial acetic acid and hydrofluoric acid; 2) after adding tetrabutyl titanate, mechanically stirring for 10 minutes; 3) putting the solution into a reaction kettle, and carrying out hydrothermal treatment at 180 DEG C for 24 hours; and 4) separating, precipitating, carrying out centrifuge washing on the precipitate with water 3 times, drying at 60 DEG C, calcining at 600 DEG C for 2 hours, and naturally cooling to room temperature, wherein the tetrabutyl titanate:water:glacial acetic acid:HF mol ratio is 1:(50-100):100:2.

Description

Technical field: [0001] The present invention relates to a novel catalyst, specifically a kind of highly active TiO 2 The invention discloses a method for synthesizing nano-disk photocatalysts, belonging to the technical field of catalysts. Background technique: [0002] In 1972, Japanese scientists such as Fujishima discovered TiO 2 Single-crystal electrodes can realize photocatalytic water splitting, and later discovered nano-TiO 2 Has the ability to photocatalytically degrade organic matter, TiO 2 It has become a research hotspot in the field of materials. Its unique physical and chemical properties are influenced not only by the crystal's intrinsic electronic structure, but also by size, shape, and surface properties. Anatase TiO 2 Compared with the other two crystal forms, it has higher activity in the process of photocatalytic reaction, so it has been widely studied. In general, crystal growth in equilibrium is always a rapid reduction of high-energy crystal fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J35/02B01J35/00
Inventor 滕飞徐梦娇陆恬云徐娟陈敏东
Owner 徐州大晶新材料科技集团有限公司
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