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Preparation method of TiO2 photocatalyst for loading on ceramic surface

A technology of ceramic surface and photocatalyst, which is applied in the field of preparation of TiO2 photocatalyst supported on the surface

Inactive Publication Date: 2006-01-25
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Preparation method of TiO2 photocatalyst for loading on ceramic surface
  • Preparation method of TiO2 photocatalyst for loading on ceramic surface

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Embodiment Construction

[0019] Preparation of ceramic carrier: general ceramics can be used, especially ceramic formulations that ensure that the product has high mechanical strength, anti-vibration, damage resistance, and low-cost carrier materials, generally kaolin-based. A better formula is as follows (high strength, low cost):

[0020] The mixed raw materials for preparing stoneware ceramics are Xingzi soil, Jinjiang soil, Donghu soil, Shunchang soil, Xikou soil, Ningguo soil, quartz, Mujie soil, Langxi soil, Guangfu soil, Suzhou soil, etc. The percentage content is: SiO 2 62.63, Fe 2 o 3 is 0.77, Ae 2 o 3 is 26.34, CaO is 0.47, MgO is 0.14, K 2 O is 1.30, Na 2 O is 0.71, loss on ignition is 7.64. The ceramic carrier is divided into two types: tubular and sheet: the length of the ceramic tube is 400mm, the inner diameter is 100mm, and the wall thickness is 20mm; the shape of the ceramic sheet is 90mm×45mm×3mm. Slurry, making mud, drying, biscuit firing, shaping, glazing, drying, and glaze...

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Abstract

The invention relates to the process for preparing TiO2 photo-catalyst carrier on ceramic surface, wherein the compact ceramic carrier material is supported with TiO2 colloidal sol through sol-gal process, the TiO2 colloidal sol is prepared through dissolving butyl titanate or propyl titanate into acids, alcohols and water, washing and drying the finished ceramic carrier into TiO2 colloidal sol for 2-40 minutes, seasoning, sintering the carrying agent with carried colloidal sol in the furnace, elevating the temperature from room temperature to 80-250 deg. C, heat preserving for 10-80 minutes, elevating temperature again to 250-400 deg. C, heat preserving for 20-80 minutes, elevating the temperature to 450-550 deg. C, heat preserving for 40-90 minutes, furnace cooling to room temperature. A stabilized catalytic activity can be achieved by the invention.

Description

1. Technical field [0001] The present invention relates to TiO 2 Preparation method of photocatalyst supported on surface. 2. Background technology [0002] The photocatalytic oxidation method is based on the fact that the photocatalyst produces active oxygen (such as hydroxyl radicals, etc.) with strong oxidation ability due to the action of light in the water system, which can oxidize various types of organic compounds and eventually degrade into water, CO 2 and inorganic substances. The effect on organic compounds (such as dyes, pesticides, etc.) containing heterocyclic or unsaturated bonds in molecules is better, and it is a potential method for sewage treatment and drinking water purification. Semiconductor TiO 2 It is the most typical photocatalyst, which has the advantages of stable chemical properties, non-toxicity, low price, mild reaction conditions, and no secondary pollution. But the powdered TiO 2 It is difficult to recycle. In addition, only ultraviolet li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/81C04B41/85
Inventor 孔令仁任学昌郭昌经孔令申黄立辉史载峰
Owner NANJING UNIV
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