Preparation method of porous glass ceramic with photocatalysis function crystal phase and obtained product

A photocatalysis and crystal phase technology, applied in the field of porous materials, can solve the problems of low content and impure crystal phase, and achieve the effects of high specific surface area, adjustable crystal phase, and easy control of the production process.

Inactive Publication Date: 2019-12-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the main crystal phase of the obtained material is a phosphate phase without photocatalytic function, anatase titanium dioxide (TiO 2 ) The crystal phase is impure and the content is low

Method used

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  • Preparation method of porous glass ceramic with photocatalysis function crystal phase and obtained product
  • Preparation method of porous glass ceramic with photocatalysis function crystal phase and obtained product
  • Preparation method of porous glass ceramic with photocatalysis function crystal phase and obtained product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. According to 4.76 mol% Fe 2 o 3 , 23.81 mol% MgO, 28.57 mol% CuO, 14.29 mol% TiO 2 and 28.57 mol% P 2 o 5 The molar composition of selected raw materials, Fe 2 o 3 , MgO, CuO, TiO 2 and P 2 o 5 The raw material for each oxide itself. Mix all the above-mentioned oxide raw materials uniformly to obtain a mixture.

[0032] 2. Put the mixture in step 1 into the crucible, and raise the temperature from room temperature to 600 °C at a rate of 10 °C / min, then from 600 °C to 1100 °C at a rate of 5 °C / min, and finally at 3 °C The heating rate per minute was raised from 1100 °C to 1250 °C, and kept at this temperature for 1 h to completely melt the mixture, pour the molten sample into cold water for quenching, and obtain a granular sample. Place in an oven at 100 °C for 12 h to dry.

[0033] 3. Raise the temperature of the sample to 630 ℃ at a rate of 5 ℃ / min, and keep it for 1 hour, then raise the temperature from 630 ℃ to 690 ℃ at a rate of 5 ℃ / min, and keep it fo...

Embodiment 2

[0038] 1. According to 4.76 mol% Fe 2 o 3 , 23.81 mol% MgO, 28.57 mol% CuO, 14.29 mol% TiO 2 and 28.57 mol% P 2 o 5 The molar composition of selected raw materials, Fe 2 o 3 , MgO, CuO, TiO 2 and P 2 o 5 The raw material for each oxide itself. Mix all the above-mentioned oxide raw materials uniformly to obtain a mixture.

[0039] 2, with embodiment 1.

[0040] 3. Raise the temperature of the sample to 630 ℃ at a rate of 5 ℃ / min, and keep it for 1 hour, then raise the temperature from 630 ℃ to 690 ℃ at a rate of 5 ℃ / min, and keep it for 2 hours. After the heat preservation, the samples were cooled to room temperature with the furnace.

[0041] 4. Soak the sample obtained in step 3 in 3 mol / L hydrochloric acid at 100 °C for 24 hours, take out the sample and dry it.

[0042] 5. The product obtained after drying is a single anatase titanium dioxide (TiO 2 ) crystalline porous material.

[0043] From figure 1 It can be seen that the crystal phase obtained by the prod...

Embodiment 3

[0045] 1. According to 6.98 mol% Fe 2 o 3 , 23.25 mol% MgO, 27.91 mol% CuO, 13.95 mol% TiO 2 and 27.91mol% P 2 o 5 The molar composition of selected raw materials, Fe 2 o 3 , MgO, CuO, TiO 2 and P 2 o 5 The raw material for each oxide itself. Mix all the above-mentioned oxide raw materials uniformly to obtain a mixture.

[0046] 2. Put the mixture in step 1 into the crucible, and raise the temperature from room temperature to 600 °C at a rate of 10 °C / min, then from 600 °C to 1100 °C at a rate of 5 °C / min, and finally at 3 °C The heating rate was increased from 1100 °C to 1250 °C per min, and kept at this temperature for 1 h to completely melt the mixture, and the molten sample was quenched and pressed into tablets to obtain an opaque black block sample, and then the sample was placed in Dry in an oven at 100 °C for 12 h.

[0047] 3. Raise the temperature of the sample to 605 °C at a rate of 5 °C / min, and keep it for 1 h, then raise the temperature from 605 °C to 68...

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Abstract

The invention discloses a preparation method of a porous glass ceramic with a single anatase type titanium dioxide (TiO2) crystal phase or a composite crystal phase of the anatase type titanium dioxide (TiO2) crystal phase with an iron phosphate hydroxide (Fe4(PO4)3(OH)3), and an obtained product. The porous material is prepared from glass consisting of 4.76-11.11mol% of Fe2O3, 22.22-23.81mol% ofMgO, 26.67-28.57mol% of CuO, 13.33-14.29mol% of TiO2 and 26.67-28.57mol% of P2O5 through thermal treatment and acid treatment. By adjusting the ratio of Fe2O3, the crystal phase of the porous materialcan be controlled. The method is easy in industrial production, and the obtained porous material has a large specific surface area and has the potential of being used as an adsorption and photocatalysis material.

Description

technical field [0001] The invention relates to a method for preparing a porous glass-ceramic containing a single anatase-type titanium dioxide crystal phase or its composite crystal phase with iron phosphate hydroxide and a product obtained, belonging to the technical field of porous materials. Background technique [0002] Anatase titanium dioxide (TiO 2 ) is the most well-known and widely used photocatalytic material, and has broad application prospects in the fields of environment and energy. Enlarging its surface area is one of the measures to improve the catalytic effect of anatase titanium dioxide. For this reason, researchers have developed some methods for preparing porous anatase titanium dioxide materials. For example, anatase-type titanium dioxide can be loaded in porous materials, such as using a molecular adsorption deposition process to load a titanium dioxide particle film with a thickness of about 100 nm on activated carbon fiber filaments to prepare an act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/08B01J20/28B01J20/30B01J21/06B01J27/185B01J35/00B01J35/10
CPCB01J27/1853B01J21/063B01J35/1014B01J35/1038B01J35/1061B01J35/1019B01J35/004B01J20/08B01J20/041B01J20/0237B01J20/0211B01J20/0259B01J20/28016
Inventor 刘世权陈峰
Owner UNIV OF JINAN
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