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Photocatalytic degradation composite particle as well as preparation method and application thereof

A technology of composite particles and photocatalysis, which is applied in the direction of chemical instruments and methods, separation methods, physical/chemical process catalysts, etc., can solve the problems of inability to actively adsorb tail gas, weak adsorption, and no porosity, etc., to achieve effective Degradation, improve adhesion, not easy to fall off

Active Publication Date: 2013-08-21
JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although rubber powder has a large surface area, it is not porous and has weak adsorption, so it cannot actively absorb the exhaust gas accumulated on the road surface.

Method used

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  • Photocatalytic degradation composite particle as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] By mass, 20 parts of nanoscale anatase TiO 2 Put it in an oven at 110°C for 12 hours and seal it up. Wash the surface of 40 parts of diatomite, a micron-sized porous material, with water, bake it in a far-infrared drying oven at 110°C for 12 hours, and seal it up. The dried nanoscale anatase TiO 2 and micron-scale porous material diatomaceous earth in a mass ratio of 1:2 and dispersed in a mixer, the stirring speed is 2000rpm, and the stirring time is 40min; 2 parts of silane coupling agent γ-aminopropyltriethoxysilane and 40 parts of industrial Ethanol is configured as a dispersion solution, and the dispersed nano-scale anatase TiO 2 Diatomite, a micron-sized porous material, was added to a three-necked flask with a condenser, heated and stirred, recovered by distillation, and then heated to 80 °C for 12 hours to obtain photocatalytic degradation composite particles (TiO 2 / Diatomaceous earth degradable composite particles.

Embodiment 2

[0021] By mass, 20 parts of nanoscale anatase TiO 2 Put it in an oven at 110°C for 12 hours and then seal it up. Rinse the surface of 100 parts of diatomite, a micron-sized porous material, with water, bake it in a far-infrared drying oven at 110°C for 12 hours, and then seal it up. The dried nanoscale anatase TiO 2 and micron-scale porous material diatomaceous earth are put into the mixer according to the mass ratio of 1:2 to disperse, the stirring speed is 2000rpm, and the stirring time is 60min; 5 parts of silane coupling agent γ-glycidyl etheroxypropyl trimethoxysilane and 60 parts of industrial ethanol is configured into a dispersion solution, and the dispersed nano-scale anatase TiO 2 Diatomite, a micron-sized porous material, was added to a three-necked flask with a condenser, heated and stirred, recovered by distillation, and then heated to 80 °C for 12 hours to obtain photocatalytic degradation composite particles (TiO 2 / diatomite degradable composite particles). ...

Embodiment 3

[0023] By mass, 20 parts of nanoscale anatase TiO 2 Put it in an oven at 110°C for 12 hours and seal it up. Clean the surface of 60 parts of diatomite, a micron-sized porous material, with ultrasonic waves for 30 minutes, bake it in a far-infrared drying oven at 110°C for 12 hours, and seal it up. The dried nanoscale anatase TiO 2 and the micron-scale porous material diatomaceous earth are put into a mixer at a mass ratio of 1:3 to disperse, the stirring speed is 2000rpm, and the stirring time is 60min; 4 parts of titanate coupling agent 102 and 50 parts of industrial ethanol are prepared into a dispersion solution, and mixed with Dispersed nanoscale anatase TiO 2 Diatomite, a micron-sized porous material, was added to a three-necked flask with a condenser, heated and stirred, recovered by distillation, and then heated to 80 °C for 12 hours to obtain photocatalytic degradation composite particles (TiO 2 / diatomite degradable composite particles).

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Abstract

The invention relates to a photocatalytic degradation composite particle which is characterized by comprising the following components: nanometer anatase TiO2, a micrometer porous material kieselguhr and a dispersing solution, wherein the dispersing solution is a mixture of a coupling agent and industrial alcohol; and the mass ratio of the nanometer anatase TiO2 to the micrometer porous material kieselguhr to the coupling agent to the industrial alcohol is 1:(2-6):(0.1-0.3):(2-4). The invention also relates to a preparation method and an application of the photocatalytic degradation composite particle. The photocatalytic degradation composite particle disclosed by the invention has the advantages that the tail gas absorption can be increased; the light absorption area is improved; the photocatalytic efficiency is improved; the effective degradation of urban road tail gas can be realized; and the damage of the tail gas pollution to the environment is reduced.

Description

technical field [0001] The invention relates to a photocatalytic degradation composite particle for degrading automobile exhaust on road surfaces, a preparation method and application thereof, and belongs to the technical field of automobile exhaust degradation on urban asphalt roads. Background technique [0002] With the continuous and rapid development of industrialization and urbanization, the number of cars (including low-speed cars) has increased sharply, reaching 131.03 million cars in 2020. While automobiles improve people's quality of life, they also bring a large amount of automobile exhaust emissions to cities. Vehicle exhaust emissions are becoming one of the important sources of urban air pollution, and the air pollution in some large cities has gradually shifted from soot to vehicle exhaust pollution, or has become a combination of both. In cities, traditional soot-type pollution has not yet been controlled, but compound air pollution caused by vehicle exhaust...

Claims

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Application Information

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IPC IPC(8): B01J21/08B01J35/02B01D53/94B01D53/56
Inventor 胡光伟张健康朱启洋张业茂顾迎春陈小周朱义铭
Owner JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
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