Formaldehyde absorbing agent containing ternary copper-doped nano titanium dioxide and preparation method of formaldehyde absorbing agent

Abstract

The invention relates to a formaldehyde absorbing agent containing ternary copper-doped nano titanium dioxide and a preparation method of the formaldehyde absorbing agent. The formaldehyde absorbing agent is prepared from the ternary copper-doped nano titanium dioxide, a nano active silver solution and water, wherein the mass percent of the ternary copper-doped nano titanium dioxide is 1-10%, and the mass percent of the silver is 0.001-0.1%. The preparation method comprises the following steps: the ternary copper-doped nano titanium dioxide powder is dispersed in partial water, the nano active silver solution is added, the remained water is supplemented, and therefore a water agent is obtained. The formaldehyde absorbing agent containing the ternary copper-doped nano titanium dioxide has extremely-high sterilization and formaldehyde removing functions, does not have special demands on luminous energy or light intensity, and the formaldehyde removing rate reaches 89.5% within 24 hours; the absorbing agent does not have corrosivity, is mild in handfeeling and does not hurt material surfaces; the absorbing agent is widely applicable to factory and home space formaldehyde removal, and has no residues or secondary pollution; the absorbing agent is easy to store, and has good stability; and the preparation method of the absorbing agent is simple, easy to operate, and suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of air purification, in particular to a formaldehyde absorbent containing ternary copper doped nano titanium dioxide and a preparation method. Background technique [0002] Indoor ambient air quality is an important factor determining the health level of the population. Among them, volatile organic compounds are the main source of indoor air pollution, and living in such a closed environment for a long time can lead to sick house syndrome (caused by air-conditioning in closed rooms in unit buildings). Traditional polymer formaldehyde purifiers absorb formaldehyde in the air through acetal reaction. However, under certain conditions, the polymer group bonds are broken, and formaldehyde will be released again in a blowout manner, causing more serious secondary pollution. Indoor air pollution is not only poisonous and harmful gases, but also the types of harmful microorganisms that are resistant to antibiotics are const...

AI Technical Summary

Problems solved by technology

However, the common photocatalysts currently on the market are mainly excited by ultraviolet or visible light bands, and have certain requirements for light intensity; the two limiting factors of specific light source bands and light intensity limit the development and application of photocatalysts.