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A kind of preparation method of opalescent glass coating with photocatalytic performance

An opalescent glass and photocatalytic technology, which is applied in the field of decorative glass, can solve the problems of weak carrier bonding, difficult to grasp and control the loading amount, and difficult to quantitatively control, etc. The effect of adsorption properties

Active Publication Date: 2016-08-17
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, TiO 2 The load is not easy to grasp and control
The reason is that in these methods TiO 2 The catalyst and the carrier are separated and linked together by surface adsorption, and the amount of adsorption is restricted by many factors, so it is difficult to quantitatively control
Second, TiO 2 Not very firmly combined with the carrier

Method used

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  • A kind of preparation method of opalescent glass coating with photocatalytic performance
  • A kind of preparation method of opalescent glass coating with photocatalytic performance
  • A kind of preparation method of opalescent glass coating with photocatalytic performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Weigh an appropriate amount of Ti(SO 4 ) 2 Chemical reagents, use deionized water to prepare A solution with a concentration of 0.1mol / L; prepare a dilute sulfuric acid solution with a concentration of 0.5mol / L, and prepare according to H 2 SO 4The molar ratio to HF is 10:1, add concentrated hydrofluoric acid to dilute sulfuric acid, mix well, and form mixed acid B liquid;

[0029] 2) Slowly add solution A to industrial water glass aqueous solution with M=2.5 under constant temperature stirring at 45°C, then add mixed acid solution B to adjust the pH value to 6.5, continue to stir for 30 minutes, and stand for 4 hours to obtain SiO 2 -TiO 2 Sol C liquid; Wherein, the mol ratio of the Si in the water glass aqueous solution and the Ti in the A solution is 1:0.7;

[0030] 3) The surface of the glass substrate was ultrasonically cleaned with deionized water and dried, and then cleaned with SnCl 2 solution for sensitization; then SiO 2 -TiO 2 The sol C solution is ...

Embodiment 2

[0041] 1) Weigh an appropriate amount of Ti(SO 4 ) 2 Chemical reagents, use deionized water to prepare A solution with a concentration of 0.2mol / L; prepare a dilute sulfuric acid solution with a concentration of 0.6mol / L, and prepare according to H 2 SO 4 The molar ratio to HF is 11:1, add concentrated hydrofluoric acid to dilute sulfuric acid, mix well, and form mixed acid B liquid;

[0042] 2) Slowly add solution A to industrial water glass aqueous solution with M=2.0 under constant temperature stirring at 50°C, then add mixed acid solution B to adjust the pH value to 6.3, continue to stir for 25 minutes, and stand for 3 hours to obtain SiO 2 -TiO 2 Sol C liquid; Wherein, the mol ratio of the Si in the water glass aqueous solution and the Ti in the A solution is 1:0.5;

[0043] 3) The surface of the glass substrate was ultrasonically cleaned with deionized water and dried, and then cleaned with SnCl 2 solution for sensitization; then SiO 2 -TiO 2 The sol C solution is...

Embodiment 3

[0046] 1) Weigh an appropriate amount of Ti(SO 4 ) 2 Chemical reagents, use deionized water to prepare A solution with a concentration of 0.15mol / L; prepare a dilute sulfuric acid solution with a concentration of 0.4mol / L, and follow the H 2 SO 4 The molar ratio to HF is 9:1, add concentrated hydrofluoric acid to dilute sulfuric acid, mix well, and form mixed acid B liquid;

[0047] 2) Slowly add solution A to industrial water glass aqueous solution with M=2.5 under constant temperature stirring at 40°C, then add mixed acid solution B to adjust the pH value to 6.0, continue to stir for 20 minutes, and stand for 2 hours to obtain SiO 2 -TiO 2 Sol C liquid; Wherein, the mol ratio of the Si in the water glass aqueous solution and the Ti in the A solution is 1:0.3;

[0048] 3) The surface of the glass substrate was ultrasonically cleaned with deionized water and dried, and then cleaned with SnCl 2 solution for sensitization; then SiO 2 -TiO 2 The sol C solution is sprayed a...

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Abstract

A kind of preparation method of opal glass coating with photocatalytic performance, Ti(SO 4 ) 2 Add the A solution made of deionized water into the water glass aqueous solution at 40-50°C; then add the mixed acid B solution made of dilute sulfuric acid and hydrofluoric acid to adjust the pH value to 6.0-6.5, continue stirring and Stand still, get SiO 2 -TiO 2 Sol C liquid, it is coated on the glass substrate after the sensitization treatment and dries, has formed SiO on the glass substrate surface after the sensitization 2 -TiO 2 Gel coat; will have SiO 2 -TiO 2 The sensitized glass substrate of the gel coating is placed in an electric furnace, heated and calcined for 1 to 1.5 hours, and then taken out after cooling with the furnace to obtain an opalescent glass coating with photocatalytic properties. The test results show that the coating contains two crystal phases of anatase and rutile, so it has two functions of photocatalytic performance and opalescent decoration.

Description

technical field [0001] The invention belongs to the technical field of decorative glass, in particular to a method for preparing an opal glass coating with photocatalytic performance. Background technique [0002] TiO 2 It is a cheap, non-toxic, energy-saving and efficient photocatalytic material. Anatase TiO 2 It can effectively degrade organic pollutants in air and water, so it becomes an ideal clean catalyst for sewage treatment and air purification, and plays an important role in environmental protection. Investigating its photocatalytic mechanism, TiO 2 It is a wide bandgap semiconductor oxide, which has a strong absorption of shorter wavelength sunlight (λ<387nm). Absorbed effective photons (h ν >E g =3.2eV) to form photogenerated electrons and holes on the conduction band and valence band respectively, and the photogenerated holes can combine with OH- in water to generate hydroxyl radicals. Hydroxyl radicals can continuously oxidize organic matter to prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/23
Inventor 张超武缪金良宋大龙时春辉张利娜王芬李菲
Owner SHAANXI UNIV OF SCI & TECH
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