Preparation method and application of composite paper based material with organic matter adsorption and degradation function

Abstract

The invention relates to a method for preparing a composite paper base material with functions of adsorbing and degrading organic matters, and an application of the composite paper base material. The material consists of 30 to 50 percent of metal oxide powder, 15 to 35 percent of absorbent powder, 0 to 25 percent of inorganic fiber, 10 to 30 percent of paper pulp and 0.5 to 5 percent of dual retention aid. When the material is prepared, the metal oxide powder, the absorbent powder, the inorganic fiber and the paper pulp are mixed into a suspension liquid with the concentration of between 2 to 8 percent, the suspension liquid is subjected to mediation for 5 to 30min, and added with the dual retention aid to dilute until the concentration is reduced down to 0.5 percent so as to prepare wet paper sheets; the paper sheets are subjected to pressing and drying to prepare the composite paper base material. The composite paper base material prepared is further processed into a paper component, and the paper component is placed in a low concentration volatile organic compound environment to realize continuous photocatalysis degradation. By utilizing the paper base material of the invention, the problems that the cost is high and the pulverization occurs due to the friction between granular materials when the zeolite is used as a carrier to prepare compound catalytic materials are resolved, and the paper base material can also adsorb low concentration volatile organic gases.

Description

technical field [0001] The invention relates to a preparation method of a composite material with photocatalytic function, specifically to prepare a composite paper-based material capable of absorbing and degrading low-concentration volatile organic compounds, and belongs to the field of material science. Background technique [0002] At present, there are a large number of low-concentration volatile organic pollution sources in the space where people live and work, such as volatile organic solvents in shoe factory adhesives, harmful gas (formaldehyde, benzene) pollution from interior decoration, etc., which seriously endanger people's health. healthy. In recent years, the application of titanium dioxide and other metal oxide heterogeneous photocatalytic reactions to treat low-concentration volatile organic compounds has become one of the most active research directions in the environmental field and inorganic material science, but large-scale commercial applications or prod...

AI Technical Summary

Problems solved by technology

This can be mainly attributed to two reasons: (1) the metal oxide powder consolidation technology such as titanium dioxide has not been solved

When metal oxide powders such as titanium dioxide photocatalytically degrade volatile organic compounds, it is easy to cause problems such as a sharp loss of airflow pressure in the reactor and obstruction of light radiation.

Judging from the situation of literature retrieval, there have been many reports at home and abroad on the preparation of metal oxide composite catalytic materials using zeolite, glass, single crystal silicon, conductive glass, etc., but the preparation costs of these methods are high. There are still problems in the reactor that cause airflow pressure loss, light radiation is blocked, and there is also the problem of powdering due to friction between granular materials

(2) The photocatalytic degradation rate of metal oxide powders such as titanium dioxide to low-concentration volatile organic gases is slow, mainly because the concentration of low-concentration volatile organic compounds on the surface of titanium dioxide powder is small