Niobium-doped titanium dioxide coated glass and preparation method thereof

A technology of titanium dioxide and coated glass, applied in coating and other directions, can solve the problems of unsuitability for large-scale industrialization, unsuitable for large-scale continuous production, serious environmental pollution, etc., and achieves improved photo-induced hydrophilicity and excellent spectral selection. characteristics, the effect of improving the doping efficiency

Inactive Publication Date: 2018-10-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional preparation of TiO 2 Coated glass mostly adopts the sol-gel method. The precursor is spread on the glass substrate in the form of sol. After subsequent heating treatment, solvents, inorganic and organic reaction products, etc. are removed, and anatase phase or rutile phase film is obtained through the crystallization process. , this method is not suitable for large-scale continuous production
At present, continuous production of TiO 2 The chemical vapor deposition method used in the coated glass uses the titanium metal organic source t

Method used

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  • Niobium-doped titanium dioxide coated glass and preparation method thereof
  • Niobium-doped titanium dioxide coated glass and preparation method thereof
  • Niobium-doped titanium dioxide coated glass and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] 1) Substrate cleaning: use white glass with a thickness of 5mm to cut into 100mm×75mm size, put it into a beaker to moisten, then add 2 drops of detergent to fill it with water and cover the glass substrate with ultrasonic soaking for 30min, then rinse off the foam with tap water Put the substrate into the prepared dilute hydrochloric acid (1:10 volume ratio) for ultrasonic cleaning for 30 minutes, then put the substrate into a beaker filled with deionized water to soak and rinse, and finally put it into absolute ethanol and ultrasonically clean it for 30 minutes , take it out and dry it in a 120°C oven for later use.

[0039] 2) Liquid mixture source material configuration: use titanium tetraisopropoxide as the titanium source, and niobium ethoxide as the niobium source. Before configuration, use high-purity nitrogen to flush the material tank, and reduce the contact between titanium source and niobium source and air, seal immediately after filling, and the material ra...

Embodiment 2

[0050] 1) Substrate cleaning: use white glass with a thickness of 5mm to cut into 100mm×75mm size, put it into a beaker to moisten, then add 2 drops of detergent to fill it with water and cover the glass substrate with ultrasonic soaking for 30min, then rinse off the foam with tap water Put the substrate into the prepared dilute hydrochloric acid (1:10 volume ratio) for ultrasonic cleaning for 30 minutes, then put the substrate into a beaker filled with deionized water to soak and rinse, and finally put it into absolute ethanol and ultrasonically clean it for 30 minutes , take it out and dry it in a 120°C oven for later use.

[0051] 2) Liquid mixture source material configuration: use tetrabutyl titanate as the titanium source, and niobium pentachloride as the niobium source. Before configuration, use high-purity nitrogen to flush the material tank, and reduce the contact between titanium source and niobium source and air, seal immediately after filling, and the material rati...

Embodiment 3

[0056] 1) Substrate cleaning: use white glass with a thickness of 5mm to cut into 100mm×75mm size, put it into a beaker to moisten, then add 2 drops of detergent to fill it with water and cover the glass substrate with ultrasonic soaking for 30min, then rinse off the foam with tap water Put the substrate into the prepared dilute hydrochloric acid (1:10 volume ratio) for ultrasonic cleaning for 30 minutes, then put the substrate into a beaker filled with deionized water to soak and rinse, and finally put it into absolute ethanol and ultrasonically clean it for 30 minutes , take it out and dry it in a 120°C oven for later use.

[0057] 2) Liquid mixture source material configuration: titanium chloride is used as titanium source, niobium ethanol is used as niobium source, and ethanol is used as solvent. Before configuration, use high-purity nitrogen to flush the material tank, and reduce the contact between titanium source and niobium source and air, seal immediately after fillin...

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Abstract

The invention discloses a preparation method of a niobium-doped titanium dioxide coated glass. The preparation method adopts a chemical vapor deposition method, and comprises the following steps of (1) mixing a titanium source and a niobium source, so as to obtain a source material mixture; or, mixing the titanium source, the niobium source and a solvent, so as to obtain the source material mixture; (2) converting the source material mixture into vapor-phase reaction gas by an air bubbling or evaporating and gasifying method; (3) carrying the vapor-phase reaction gas to the pretreated high-temperature glass substrate by carrying gas, reacting, and depositing, so as to obtain the niobium-doped titanium dioxide coated glass. The prepared niobium-doped titanium dioxide coated glass has the advantages that the bonding force of a film layer is excellent, and the physical stability and chemical stability are good; the thin film is made of anatase-phase titanium dioxide, and the mass concentration of the niobium-doped material is 0.5 to 15%; the photo-induced super-hydrophilicity is realized; the niobium-doped titanium dioxide coated glass is prepared at high temperature, and is suitablefor the low-cost preparation of large-area coated film; the cleaning is easy, and the stain-resistant property is realized.

Description

technical field [0001] The invention belongs to the field of preparation and application of large-area coated glass for building, and in particular relates to the preparation and application of coated glass with easy-cleaning and self-cleaning functions. Background technique [0002] TiO 2 It is a wide bandgap semiconductor, and its bandgap width is generally 3.0-3.2eV. Sunlight strikes TiO 2 Surface, TiO 2 Absorbing photon energy, electrons in the valence band transition to the conduction band, react with oxygen molecules in the air, and generate superoxide ion radicals (O 2 - ). The holes left by the valence band react with water molecules to generate hydroxyl radicals (·OH). o 2 - and OH participate in the decomposition reaction of organic matter, thus exhibiting photocatalytic activity. TiO 2 It also exhibits superhydrophilicity under light. Photogenerated holes are covered by lattice TiO 2 Oxygen is captured, forming oxygen vacancies, and the electrons will ...

Claims

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Application Information

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IPC IPC(8): C03C17/25
CPCC03C17/256C03C2217/24C03C2218/15
Inventor 刘涌韩高荣汪建勋
Owner ZHEJIANG UNIV
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