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Preparation method for adsorption photochemical catalysis composite material

A composite material and photocatalytic technology, which is applied in the field of preparation of adsorption photocatalytic composite materials, can solve the problems of destroying the lattice, inconvenient replacement, and reducing the activation performance.

Inactive Publication Date: 2017-04-26
杭州科瑞特环境技术有限公司
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  • Abstract
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Problems solved by technology

However, the use of metal supports has the disadvantage of being expensive, and some metal ions will enter TiO during heat treatment. 2 When using granular activated carbon or powdered activated carbon as a load, it still operates as a suspended solid system in the solution, and there are problems such as difficulty in filtering out the adsorbent after the reaction and inconvenient replacement.

Method used

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  • Preparation method for adsorption photochemical catalysis composite material
  • Preparation method for adsorption photochemical catalysis composite material
  • Preparation method for adsorption photochemical catalysis composite material

Examples

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Embodiment 1

[0026] Preparation of Adsorbed Photocatalytic Composite Materials.

[0027] Use a commercially available high-quality waterproof honeycomb activated carbon, L×W×H=50mm×100mm×100mm, first use compressed air to blow off the powder on the grid surface of the honeycomb activated carbon and the inner surface of the honeycomb channel, and then use a mass concentration of 10 % dilute sulfuric acid solution to acidify the mesh surface of the honeycomb activated carbon and the inner surface of the honeycomb channel; The pH value of the liquid is constant at about 7.0, and then put the honeycomb activated carbon into the oven, and dry it at 100°C for 1h; take the TiO 2 Anatase nano-TiO with a mass fraction of 10% 2 Dispersion, TiO 2 The particle size is 10nm, and phosphorous acid (H 3 PO 3 ) solution, control the added H 3 PO 3 The mass fraction is 0.5%. Then ultrasonic waves were used to treat the nano-TiO after the phosphorous acid solution was added dropwise 2 Shake the dispe...

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Abstract

The invention discloses a preparation method for an adsorption photochemical catalysis composite material. The preparation method includes the specific steps that (1) a cellular activated carbon gridding surface and a cellular channel inner surface are acidized with a dilute acid solution, washed with water and dried; (2) an H3PO3 solution is dropwise added into nanometer TiO2 dispersion liquid, nanometer TiO2 particles are subjected to surface acidification, and then ultrasonic oscillating treatment is carried out; (3) the cellular activated carbon gridding surface and the cellular channel inner surface treated in the step (1) are coated with the nanometer TiO2 dispersion liquid treated in the step (2) through a brush and a spraying gun; and (4) a cellular activated carbon composite material loaded with nanometer TiO2 after being treated in the step (3) is put into a muffle furnace to be subjected to temperature programming roasting, and the adsorption photochemical catalysis composite material is obtained after natural cooling.

Description

technical field [0001] The invention belongs to the field of exhaust gas treatment, and in particular relates to a preparation method of an adsorption photocatalytic composite material. Background technique [0002] Under the action of ultraviolet light, TiO 2 The valence band electrons of titanium atoms will be excited to form electron-hole pairs, and the water vapor and oxygen in the air will be decomposed into highly oxidizing OH and O in contact with them. 2 -•, can degrade a variety of organic pollutants and some inorganic compounds, and play a role in purifying the air. In addition, TiO 2 The catalyst has the characteristics of no photocorrosion after exposure to light, good acid and alkali resistance, and stable chemical properties. It has broad application prospects in the treatment of low-concentration organic wastewater and organic waste gas. Therefore, it is often used as a photocatalyst in the environmental protection industry. Generally TiO 2 Loaded on meta...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/20B01J20/28B01J27/18B01J21/06B01J35/04B82Y30/00B82Y40/00
Inventor 邵振华姜建清张智顾佳涛
Owner 杭州科瑞特环境技术有限公司
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