Adhering coating process of photocatalyst and fixed bed base material

Abstract

The invention relates to an adhering coating process of a photocatalyst and a fixed bed base material. The process comprises the following steps that S1, the fixed bed base material is fully coated with or soaked in a water-based adhesive, and natural air drying is carried out in a dust-free environment after the fixed bed base material is taken out; S2, the air-dried fixed bed base material obtained in the step S1 is coated with or soaked in the photocatalyst, wherein the fixed bed base material comprises three-dimensional-structure foamed nickel, foamed aluminum or a porous ceramic material;S3, after the process that the fixed bed base material is coated with or soaked in the photocatalyst is finished, the fixed bed base material is placed in a medium-temperature drying oven at the temperature of 250-600 DEG C for drying for 1-1.5 hours; and S4, the step S2 and the step S3 are repeatedly carried out 0-N times, wherein N is a natural number greater than or equal to 1. The adhering coating process has the beneficial effects that a three-dimensional foamed nickel plate is a carrier of the photocatalyst and is an anode as well, and the three-dimensional foamed nickel plate has largespecific surface area, good light penetrability and medium liquidity; and meanwhile, an electric field is used for pulling transition electrons into a cathode, so that the effective electron hole rate is ensured, and the photocatalytic efficiency is improved.

Description

technical field

[0001] The invention relates to an adhesive coating process of a catalyst and a base material, in particular to an adhesive coating process of a photocatalyst and a fixed bed base material. Background technique

[0002] As a non-toxic, harmless and non-toxic static environmental protection treatment material that does not produce secondary pollution, photocatalyst has been widely used in environmental protection treatment fields such as indoor air purification, industrial waste gas, domestic sewage, and industrial sewage. However, there is no effective bonding and coating method between the photocatalyst and the fixed bed substrate, and the method of bonding and coating after mixing the adhesive and the photocatalyst is generally used, resulting in a large amount of photocatalyst being covered by the adhesive and reducing the specific surface area. Small, the photocatalyst cannot fully act under visible light, a large amount of solar energy is lost, and the d...