Preparation method and application of photocatalytic functional fabric

Abstract

The invention provides a photocatalytic functional fabric and a preparation method thereof. The preparation method comprises the following steps: firstly treating zeolite imidazole skeleton material (ZIF-8) onto a fabric, then loading bismuth vanadate (BiVO4) onto the fabric treated by the ZIF-8 by adopting an in-situ growth method, and preparing the photocatalytic functional fabric. The functional fabric can efficiently and catalytically degrade organic pollutants under the radiation of visible light and can be used for treating the printing and dyeing waste water and purifying the air. The preparation method is simple in preparation process. The prepared photocatalytic functional fabric has the advantages of good adsorption performance, high catalytic efficiency, good stability, reusability and the like. The photocatalytic degradation rate for active black KN-B can reach 85 percent or above, and the photocatalytic degradation rate for the active black KN-B after being reused for three times can be still kept at 65 percent or higher. The degradation rate for formaldehyde in the air can reach 87 percent or above.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, and relates to a preparation method and application of photocatalytic functional fabrics, in particular to growing ZIF-8 and BiVO in situ 4 A functional fabric with good adsorption performance and catalytic decomposition of harmful substances under visible light is obtained. Background technique [0002] With rapid economic development and accelerated urbanization, global environmental pollution and energy shortages have increasingly become major challenges facing mankind. Environmental governance and the utilization of solar energy have become priority research directions for domestic and foreign scientific and technological workers. Printing and dyeing wastewater is currently one of the most difficult industrial wastewater to treat because of its high content of organic pollutants, deep color, complex components, and residual dyes, additives, slurries, and inorganic salts; the types of i...

AI Technical Summary

Problems solved by technology

Bismuth vanadate is a new type of photocatalytic material, although it has a wide range of visible light response, but BiVO 4 The generated photogenerated electron-hole pairs are easy to recombine on the bulk phase and surface of the catalyst, poor adsorption performance, and small specific surface area, resulting in a decrease in photocatalytic activity. At the same time, powdered BiVO 4 Photocatalytic materials have disadvantages such as easy precipitation and difficult reuse

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