Photocatalytic material with nano TiO2 loaded on graphene-foamed nickel and preparation method of photocatalytic material

Abstract

The invention discloses a photocatalytic material with nano TiO2 loaded on graphene-foamed nickel and a preparation method of the photocatalytic material. The foamed nickel is taken as a base, a graphene film layer is deposited on the foamed nickel to form a graphene-foamed nickel composite carrier, a TiO2 sol film layer is formed on the graphene-foamed nickel composite carrier, the graphene is combined with the foamed nickel to serve as an organic carrier loaded with the nano TiO2, a three-layer structure is formed, the carrier is firmly loaded with the nano TiO2, and the photocatalytic activity of the TiO2 is greatly improved. An electrophoretic deposition method is used and a polyurethane foam serves as a base to prepare the foamed nickel with high specific surface area, the foamed nickel is then loaded with the graphene through the electrophoretic deposition method, the grapheme film layer is formed, a sol-gel method is used, no binder is used, the nano TiO2 with higher photocatalytic activity is loaded on the graphene-foamed nickel composite carrier, the whole process is simple in operation, the period is short, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a graphene-foam nickel loaded nano TiO 2 Photocatalytic materials and their preparation methods. Background technique [0002] Nano-TiO 2 Powder has been proved to be an efficient, non-toxic and stable photocatalyst material in this year's research, and it has good photocatalytic activity in both liquid phase reaction and gas phase reaction, but due to the powdery nano TiO 2 The particles are fine, difficult to recycle, and the loss of active components of the catalyst is large, which is not conducive to the regeneration and reuse of the catalyst, which brings a lot of tedious operations to the actual production, and a lot of extra costs are invested to maintain the use of the catalyst to meet the production needs. [0003] Use a solid carrier to load the photocatalyst on the carrier, so that the photocatalyst is immobilized, which can solve the problem of cata...

AI Technical Summary

Problems solved by technology

[0004] Among them, nickel foam has unique advantages in the field of gas-phase photocatalysis as a photocatalyst carrier due to its good mechanical properties, high porosity, good stability, and good fluid properties. Nano-TiO 2 The technical solution for the preparation of the powder simply loads the catalyst on the foamed nickel, without improving the foamed nickel carrier to increase the catalytic activity, so that there is a problem that the catalyst activity cannot fully act and react; and the existing preparation The method often uses a binder for loading, and the binder is easy to react with light, and it is oxidized and invalidated by the photocatalyst, so that there is a problem that the photocatalytic activity is affected and reduced.