Modified titanium dioxide/bamboo charcoal composite environment-friendly aerogel and preparation method thereof

Abstract

The invention discloses modified titanium dioxide / bamboo charcoal composite environment-friendly aerogel and a preparation method thereof. The modified titanium dioxide / bamboo charcoal composite environment-friendly aerogel comprises the following raw materials: 10mL of titanium ethoxide, 0.001g to 0.006g of a surface active agent, 1mL to 3mL of a 0.001mol / L to 0.006mol / L silver nitrate solution, glacial acetic acid and bamboo charcoal powder, the volume size of the silver nitrate solution to the glacial acetic acid is 1 to (0.01 to 0.04), and the mass of the bamboo charcoal powder is 0.01 to 0.20 percent of the mass of the titanium ethoxide. The preparation method comprises the steps: dissolving the titanium ethoxide into anhydrous ethanol, placing the surface active agent, and uniformly stirring to obtain a solution A; dissolving the silver nitrate solution in a mixed solution of the glacial acetic acid and water, and uniformly stirring to obtain a solution B; and gradually dropwise adding the solution B into the solution A, adding the bamboo charcoal powder, uniformly stirring, standing, aging, carrying out the washing, thermally treating a prepared product in a microwave oven, and then cooling the product to the room temperature to obtain the modified titanium dioxide / bamboo charcoal composite environment-friendly aerogel. The aerogel has advantages of no toxicity, large specific surface area, high porosity and highlight catalytic effect.

Description

technical field [0001] The invention relates to a modified titanium dioxide / bamboo charcoal composite environment-friendly airgel and a preparation method thereof, belonging to the technical field of environmental protection. Background technique [0002] Various building decoration materials in the living room, such as wood-based panels, wood composite floors, laminated wood furniture and adhesives, will emit toxic pollutants such as formaldehyde, halogenated hydrocarbons, and aromatic hydrocarbons, which are harmful to human health. [0003] Titanium dioxide is considered to be the most efficient and environmentally friendly photocatalyst widely used for the degradation of various pollutants. Titanium dioxide airgel is a porous three-dimensional network solid material formed by the aggregation of nanoparticles or polymer molecules. The size of its internal pores and basic constituent particles are all on the nanometer scale, and it is a mesoporous material with a high spec...

AI Technical Summary

Problems solved by technology

[0004] However, there are the following problems in the preparation of existing titanium dioxide airgel: (1) titanium source generally adopts butyl titanate, and butyl titanate will decompose to produce titanium dioxide and butanol, butanol not only smells bad, but also toxic, It can cause skin diseases and endanger health; (2) Since there is no modification of titanium dioxide, titanium dioxide airgel does not have visible light photocatalysis, and has no functions such as sterilization and releasing far-infrared rays and negative oxygen ions; (3) the prepared The specific surface area of ​​the airgel is small, the porosity is low, and the pore size distribution is uneven.