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Method for preparing special automobile exhaust purification photocatalysis coating for tunnels

A technology of automobile exhaust and photocatalysis, applied in coating and other directions, can solve the problems of affecting driving safety, limited exhaust gas purification effect, and high ventilation operation cost, and achieve the effect of ensuring driving safety and remarkable removal effect.

Inactive Publication Date: 2015-12-30
JIANGSU JINYU ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved in the present invention: A large amount of carbon monoxide, hydrocarbons and nitrogen oxides are contained in the vehicle exhaust emissions in the tunnel, which is not only very harmful to the environment and the human body, but also affects driving safety, and the traditional tunnel ventilation air The exhaust gas purification effect of purification mode is limited, and the operating cost of ventilation is relatively high. A preparation method of photocatalytic coating for purifying automobile exhaust in the tunnel is provided. As a modifier, nano-titanium oxide particles doped with iron ions were prepared by the sol-gel method, and then the prepared nano-titanium oxide particles were added into the coating primer, and after mixing evenly, a leveling agent and a thickener were added, that is Obtained a special photocatalytic coating for purifying automobile exhaust in tunnels

Method used

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Examples

Experimental program
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Effect test

example 1

[0029]First, measure 50mL of absolute ethanol and put it into a 500mL beaker, then take 20mL of butyl titanate and slowly add it to absolute ethanol, then add 25mL of diethanolamine as an inhibitor, place it on a magnetic stirrer at 200r / min Stir for 1 hour at a high speed to make it fully dispersed to prepare reactant 1; then take 1 mL of ferric nitrate solution with a mass concentration of 80% and add it to 50 mL of deionized water, pour it into a dispersion tank together, and disperse for 15 minutes at a speed of 100 r / min , after fully dispersed, add 20mL of absolute ethanol, and shake the shaker for 10min to make reactant 2; then slowly add reactant 2 drop by drop into reactant 1 while stirring, and control the dropping speed to make it within 10min After dripping, adjust the pH to 6 with a hydrochloric acid solution with a concentration of 2mol / L, place it on a magnetic stirrer and stir for 2 hours at a stirring speed of 300r / min, then age for 12 hours to form a gel, and ...

example 2

[0032] First, measure 55mL of absolute ethanol and put it into a 500mL beaker, then take 25mL of butyl titanate and slowly add it to absolute ethanol, then add 28mL of diethanolamine as an inhibitor, place it on a magnetic stirrer at 250r / min Stir for 1.5 hours at a high speed to make it fully dispersed to prepare reactant 1; then take 1.5mL of ferric nitrate solution with a mass concentration of 80% and add it to 70mL of deionized water, pour it into a dispersion tank together, and mix it at a speed of 150r / min Disperse for 17 minutes. After fully dispersing, add 25mL of absolute ethanol and shake the shaker for 13 minutes to prepare reactant 2; then slowly add reactant 2 to reactant 1 drop by drop while stirring, and control the dropping speed to make it After dropping within 10 minutes, adjust the pH to 6 with a hydrochloric acid solution with a concentration of 2mol / L, place it on a magnetic stirrer and stir for 2 hours at a stirring speed of 300r / min, and then age for 12 h...

example 3

[0035] First measure 60mL of absolute ethanol and put it into a 500mL beaker, then take 30mL of butyl titanate and slowly add it to absolute ethanol, then add 30mL of diethanolamine as an inhibitor, place it on a magnetic stirrer at 300r / min Stir for 2 hours at a high speed to make it fully dispersed to prepare reactant 1; then take 2 mL of ferric nitrate solution with a mass concentration of 80% and add it to 100 mL of deionized water, pour it into a dispersion tank together, and disperse for 20 minutes at a speed of 200 r / min , after fully dispersed, add 30mL of absolute ethanol, shake the table for 15min to make reactant 2; then slowly add reactant 2 to reactant 1 drop by drop while stirring, and control the dropping speed to make it within 20min After dripping, adjust the pH to 8 with a hydrochloric acid solution with a concentration of 2mol / L, place it on a magnetic stirrer and stir for 3 hours at a stirring speed of 400r / min, then age for 18 hours to form a gel, and move ...

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PUM

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Abstract

The invention belongs to the technical field of catalysts and discloses a method for preparing special automobile exhaust purification photocatalysis coating for tunnels. The method includes: taking nano titanium oxide which is a photocatalytic material as a matrix material, taking ferric nitrate as a modifying agent, preparing iron ion doped nano titanium oxide particles by a sol-gel process, adding the prepared nano titanium oxide particles into a coating base material, well mixing, and adding a flatting agent and a thickening agent to obtain the special automobile exhaust purification photocatalysis coating for the tunnels. According to examples, the special automobile exhaust purification photocatalysis coating for the tunnels not only guarantees driving safety due to harmlessness to the environment and human bodies but also is remarkable in removal efficiency, and the removal rate of harmful emissions in automobile exhaust in the tunnels is higher than 85%.

Description

technical field [0001] The invention discloses a preparation method of a special photocatalytic coating for purifying automobile exhaust in a tunnel, and belongs to the field of coating preparation. Background technique [0002] With the continuous improvement of living standards, cars, as a symbol of high living standards, are rapidly entering the majority of families. With the improvement of living standards and the development of the automobile industry, the emission of automobile exhaust increases. Most of these gas emissions are composed of carbon monoxide, hydrocarbons and nitrogen oxides, and contain a large amount of harmful gases. One of the main sources of pollution, not only has a strange smell, but also makes people dizzy and nauseated, affecting people's health. [0003] In the case of not many vehicles, the self-purification ability of the atmosphere can still dissolve the toxins emitted by the cars. However, with the rapid increase in the number of cars, tra...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D7/12
Inventor 李锦宇张帆林大伟
Owner JIANGSU JINYU ENVIRONMENTAL ENG
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