Permeable bricks inlaid with nanometer titanium dioxide and preparation method thereof

Abstract

The invention relates to permeable bricks inlaid with nanometer titanium dioxide and a preparation method thereof and belongs to the field of building materials. According to the preparation method provided by the invention, titanium dioxide precursor turbid liquid is evenly sprayed into holes of permeable brick base bodies, and then the permeable brick base bodies are dried and calcined for 10-30 min so as to obtain the permeable bricks inlaid with nanometer titanium dioxide and anatase type nanometer titanium dioxide is uniformly inlaid in the holes of the obtained permeable bricks. The permeable bricks can effectively degrade contaminants in water seepage passing though the permeable bricks and some organic contaminants attached to the surfaces of brick bodies in a manner of photochemical catalysis and also can degrade a part of gaseous pollutants in air in a manner of photochemical catalysis.

Description

technical field [0001] The invention relates to a permeable brick inlaid with nano-titanium dioxide and a preparation method thereof, belonging to the field of building materials. Background technique [0002] Most of the permeable bricks currently produced and sold or people are working on research only focus on improving their mechanical strength and water permeability. Although these permeable bricks are neat, beautiful and dust-proof, they can alleviate urban waterlogging to a certain extent and replenish urban groundwater. , to regulate the urban environment, but they simply allow precipitation to seep into the ground through the bricks, cannot effectively remove the pollutants contained in the water, and cannot purify the sewage that passes through the bricks. In addition, there are many pollutants such as chewing gum adhering to the brick surface that cannot be removed by cleaning tools. The pores of the permeable bricks are easily blocked by some pollutants carried i...

AI Technical Summary

Problems solved by technology

[0002] Most of the permeable bricks currently produced and sold or people are working on research only focus on improving their mechanical strength and water permeability. Although these permeable bricks are neat, beautiful and dust-proof, they can alleviate urban waterlogging to a certain extent and replenish urban groundwater. , to regulate the urban environment, but they simply allow precipitation to seep into the ground through the bricks, cannot effectively remove the pollutants contained in the water, and cannot purify the sewage that passes through the bricks

In addition, there are many pollutants such as chewing gum adhered to the brick surface that cannot be removed by cleaning tools. The pores of the permeable brick are easily blocked by some pollutants carried in the precipitation, which affects the permeable function and life of the permeable brick.

In order to solve these problems, some studies have reported that titanium dioxide is doped into the raw materials of permeable bricks, in order to use the photocatalytic degradation function of titanium dioxide to purify the sewage infiltrated through the bricks, but most of the permeable bricks prepared by doping titanium dioxide are buried with titanium dioxide In the permeable brick matrix, this reduces the effect of part of the titanium dioxide on the light irradiation, resulting in waste and increased costs; at the same time, the difference between the particle size of titanium dioxide and the particle size of the raw material of the permeable brick also leads to uneven distribution of titanium dioxide or the coating of titanium dioxide affects the quality of titanium dioxide. effect

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