Method for preparing titanium dioxide and sepiolite composite material

Abstract

The invention discloses a method for preparing a titanium dioxide and sepiolite composite material, belonging to the field of preparation of photocatalytic materials. Aiming at the problems that the directly used powdered TiO2 is large in amount, low in optical activity and short in service life and is difficultly recycled, the invention provides the method for preparing the titanium dioxide and sepiolite composite material which is high in photocatalytic performance and easy to recycle. The preparation method comprises the following steps: preparing TiO2 nano-sol by adopting a sol-gel method, loading TiO2 onto the surface of sepiolite by adopting an impregnation method, thereby obtaining the titanium dioxide and sepiolite composite material. The preparation method is simple in process, and the prepared titanium dioxide and sepiolite composite material is high in photocatalytic performance and easy to recycle and has wide application prospects.

Description

technical field [0001] The invention belongs to the field of photocatalytic material preparation. Background technique [0002] As a new water treatment technology, photocatalytic oxidation has potential advantages such as high efficiency and low consumption. TiO 2 Due to its stable photochemical properties, high efficiency and low cost, it is widely used as photocatalyst. Direct use of powdered TiO 2 Photocatalytic oxidation reaction, although it can effectively oxidize many refractory organic substances in water, achieve detoxification, decolorization, deodorization until completely degraded into CO 2 and H 2 O and other inorganic small molecules, but usually the suspension phase photocatalytic oxidation method has problems such as difficulty in separating from water, large amount of catalyst, low photoactivity, short life, and difficult to recycle. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a titaniu...

AI Technical Summary

Problems solved by technology

Directly using powdered TiO2 for photocatalytic oxidation reaction, although it can effectively oxidize many refractory organic substances in water, achieve detoxification, decolorization, deodorization until completely degraded into CO2 sub> and H2O and other inorganic small molecules, but the suspension phase photocatalytic oxidation method usually has problems such as difficulty in separation from water, large amount of catalyst, low photoactivity, short life, and difficult to recycle.