Method for preparing photocatalytic composite modified molecular sieve

Abstract

The invention discloses a method for preparing a photocatalytic composite modified molecular sieve. The photocatalytic composite modified molecular sieve is prepared from tetrabutyl titanate, anhydrous ethanol, an alkaline solution, sodium metaaluminate, water glass and silver nitrate. Suction filtration is carried out to prepare semi-dry gel, and the semi-dry gel is used to produce the molecularsieve, so the solid content of a reaction kettle is improved, and the energy consumption in the production of per unit mass of the molecular sieve is reduced; the molecular sieve is modified with alkali, and the abundant meso-porous structures are introduced to the molecular sieve mainly based on micro-pores, so the load capacity of titanium dioxide is greatly improved; and a rich adsorption surface is used to increase the contact area of the titanium dioxide and pollutants, so the photocatalysis effect is efficiently completed, and the photocatalytic degradation of the pollutants is realized.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a method for preparing photocatalytic composite modified molecular sieves. Background technique [0002] With the rapid development of industry, the problem of environmental pollution is becoming more and more serious. Among them, the discharge of industrial waste water and waste gas is particularly prominent, and all countries have invested heavily in the research of treatment technologies for environmental purification and environmental pollution. Photocatalytic treatment technology has been widely concerned because it can reduce organic pollutants to inorganic substances, has fast reaction speed, high light utilization efficiency and no secondary pollution. Among them, how to improve the ability of photocatalytic materials to deal with environmental pollution has become a research hotspot. [0003] As a photocatalyst, nano-titanium dioxide has a good degrada...

AI Technical Summary

Problems solved by technology

In the hydrothermal reaction process of crystal growth, a large amount of water is used as a solvent, occupying most of the volume in the reactor, so that the output of a single reactor is limited, and because the crystallization process needs to be completed at a high temperature, the existence of a large amount of solvent makes the energy per unit output High consumption

At the same time, the use of molecular sieves alone is limited and cannot meet people's needs. Therefore, further compounding and modification are required to improve the application field and efficiency of molecular sieves.