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A kind of preparation method of micron flower structure rutile phase titanium dioxide

A rutile phase, titanium dioxide technology, applied in titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide and other directions, can solve the problems of low specific surface area of ​​particles, unfavorable photocatalytic reaction, complex process, etc., and achieve high specific surface area, catalytic Good effect, the effect of reducing production cost

Inactive Publication Date: 2020-03-17
CHENGDU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of this preparation method is low, but the process is complicated and must be heat treated, and the obtained product TiO 2 Particle specific surface area is low, which is not conducive to photocatalytic reaction

Method used

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  • A kind of preparation method of micron flower structure rutile phase titanium dioxide
  • A kind of preparation method of micron flower structure rutile phase titanium dioxide
  • A kind of preparation method of micron flower structure rutile phase titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: a kind of preparation method of micron flower structure rutile phase titanium dioxide, comprises the following steps:

[0018] (1) Weigh 0.2 g of spherical titanium powder and place it in a beaker, add 19 ml of deionized water, and stir at a constant speed to make it evenly mixed;

[0019] (2) Measure 10 ml of 36-38 wt% hydrochloric acid and 1 ml of hydrogen peroxide, pour it into the beaker in step (1), and place it on a magnetic stirrer to stir slowly for 30 min;

[0020] (3) Transfer the above solution to a 50 ml hydrothermal synthesis kettle, tighten the reaction kettle, and place it in a constant temperature blast drying oven at 200 °C for hydrothermal reaction for 18 h;

[0021] (4) Separating the hydrothermal reaction product from solid to liquid to obtain a solid powder, washing the powder repeatedly with deionized water until neutral, drying at 80°C, and grinding to obtain the product.

Embodiment 2

[0022] Embodiment 2: a kind of preparation method of micron flower structure rutile phase titanium dioxide, comprises the following steps:

[0023] (1) Weigh 0.2 g of spherical titanium powder and place it in a beaker, add 18 ml of deionized water, stir at a constant speed to make it evenly mixed;

[0024] (2) Measure 10 ml of 36-38 wt% hydrochloric acid and 2 ml of hydrogen peroxide, pour it into the beaker in step (1), and place it on a magnetic stirrer to stir slowly for 30 min;

[0025] (3) Transfer the above solution to a 50 ml hydrothermal synthesis kettle, tighten the reaction kettle, and place it in a constant temperature blast drying oven at 200 °C for hydrothermal reaction for 10 h;

[0026] (4) Separating the hydrothermal reaction product from solid to liquid to obtain a solid powder, washing the powder repeatedly with deionized water until neutral, drying at 80°C, and grinding to obtain the product.

Embodiment 3

[0027] Embodiment 3: a kind of preparation method of micron flower structure rutile phase titanium dioxide, comprises the following steps:

[0028] (1) Weigh 0.2 g of spherical titanium powder and place it in a beaker, add 19 ml of deionized water, and stir at a constant speed to make it evenly mixed;

[0029] (2) Measure 10 ml of 36-38 wt% hydrochloric acid and 1 ml of hydrogen peroxide, pour it into the beaker in step (1), and place it on a magnetic stirrer to stir slowly for 40 min;

[0030] (3) Transfer the above solution to a 50 ml hydrothermal synthesis kettle, tighten the reaction kettle, and place it in a constant temperature blast drying oven at 200 °C for hydrothermal reaction for 14 h;

[0031] (4) Separating the hydrothermal reaction product from solid to liquid to obtain a solid powder, washing the powder repeatedly with deionized water until neutral, drying at 80°C, and grinding to obtain the product.

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Abstract

The invention relates to the field of inorganic nonmetallic materials, in particular to a preparation method of micron-flower structure rutile phase titanium dioxide. The method comprises the steps ofadding titanium powder into water and evenly mixing, then adding hydrochloric acid and hydrogen peroxide and stirring, carrying out a hydrothermal reaction, and cleaning, drying and grinding the product of the hydrothermal reaction to obtain the micron-flower structure rutile phase titanium dioxide. The product is rutile phase TiO2 powder with a flower-like special morphology, and has a high specific surface area and a good photocatalytic degradation effect on organic matters. The production process does not require heat treatment, and the TiO2 powder with a rutile crystal form can be obtained by means of direct hydro-thermal synthesis, so that the production cycle is effectively shortened, and the production cost is lowered.

Description

technical field [0001] The invention relates to the field of inorganic non-metallic materials, in particular to a method for preparing rutile phase titanium dioxide with micron flower structure. Background technique [0002] TiO 2 As a semiconductor catalyst, due to its unique properties, it is widely used in solar cells, photocatalytic hydrogen production, air pollution control, and degradation of dye wastewater. TiO 2 There are three crystal forms in nature, namely anatase, rutile and brookite. Their properties and shapes are different, among which rutile TiO 2 It is the most stable of the three structures, and it does not transform and decompose even at high temperatures. Currently TiO 2 The preparation methods of photocatalysts mainly include hydrothermal method, sol-gel method, microemulsion method and so on. The traditional sol-gel method uses metal organic or inorganic compounds as raw materials, undergoes hydrolysis reaction in the corresponding solvent to form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053B01J21/06
CPCB01J21/063B01J35/004C01G23/053C01P2002/72C01P2004/03C01P2004/30
Inventor 孙艳范雨鑫江峰曾俊谚文渊赵彬彬郭静刘恩东刘强
Owner CHENGDU UNIV
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