Functional material capable of visually degrading formaldehyde and VOCs (Volatile Organic Compounds) at normal temperature and normal pressure and preparation method thereof

Abstract

The invention provides a functional material for visually degrading formaldehyde and VOCs (Volatile Organic Compounds) at normal temperature and normal pressure. The functional material comprises a loading agent, an oxidizing agent, a catalyst, a reinforcing agent and a ligand. The reaction efficiency is improved through the synergistic strengthening effect of the loading agent, the oxidizing agent, the catalyst, the reinforcing agent and the ligand, so that the material has an excellent effect of degrading formaldehyde and VOCs at normal temperature and normal pressure, the structure and color of the material are changed before and after the reaction with formaldehyde and VOCs, and the reaction speed and degree can be directly observed and indicated by naked eyes. The material prepared by the invention not only can degrade formaldehyde, but also can degrade various VOCs (Volatile Organic Compounds). Due to the synergistic strengthening effect, all the components are evenly distributed, firmly combined and resistant to water and moisture, the material can be made into a solid state or a liquid state, and the problems of performance degradation, structural damage and the like after a solid catalyst absorbs water are essentially solved. The functional material is used in the fields of environmental protection and health, and is especially important for treatment of pollution gas and industrial VOCs in space.

Description

technical field [0001] The invention belongs to the field of new materials and gas pollution control, and specifically relates to a functional material and a preparation method for visually degrading formaldehyde and VOCs at normal temperature and pressure, which are used in the fields of gas purification, environmental protection, and general health. Background technique [0002] With the continuous development of the economy and the rapid development of real estate, automobile, chemical, pharmaceutical, textile and other industries, people's requirements for housing, travel, clothing, medical care, living environment, etc. are constantly increasing. However, the existing production methods of material materials are accompanied by a large amount of polluting gas emissions. On the one hand, various decoration materials in the interior, car, and space, such as formaldehyde and VOCs (volatile organic compounds); on the other hand, a large number of industrial enterprises emit ...

AI Technical Summary

Problems solved by technology

Noble metal catalysts cannot be widely used due to the high cost of noble metals and their susceptibility to temperature and pollution

Chinese patent CN10380574 discloses a catalyst for catalytic oxidation of formaldehyde at room temperature. The catalyst component is 0.2-30% according to the metal loading, preferably 1-10%. The cost is too high and it is not easy to popularize

Chinese patent CN1698932A uses Au as a noble metal to catalyze the oxidation of formaldehyde, but only at a higher temperature (80-100°C) can it exert better catalytic efficiency, which limits its wide application

However, since potassium permanganate itself is a strong oxidizing substance, it is easy to damage the surface of furniture or clothing in contact with it alone. In addition, the color change range of this material is from red to brown, and the color change is not sensitive.

Chinese patent CN 102527228 A discloses a visually discolored formaldehyde scavenger, which is composed of three components: an adsorption component, a catalytic component and a discoloration component, although it can discolor after contacting formaldehyde, etc. The discoloration is dependent on the effect of the acid-base indicator, rather than the discoloration caused by the failure of the active functional components in the true sense, and it cannot directly indicate the change of the purification ability of the material

[0009]Furthermore, most of the existing technologies have only studied the catalytic oxidation effect of catalysts on formaldehyde, but in fact, in indoor and car interior spaces, it is harmful to human health. More serious is benzene and its homologues

On the other hand, since benzene and its homologues are also important components that cause indoor and car odors, those catalysts or reactions that can only catalyze the oxidation of formaldehyde cannot really reduce indoor, car, and space odors

Images