Method for preparing multidimensional photocatalytic material

Abstract

The invention provides a method for preparing a multidimensional photocatalytic material, comprising the following steps of: (1) preparing a titanium coating material; and (2) preparing a titanium dioxide photocatalytic film on the surface of the titanium coating. The titanium coating material is prepared through any one or the combination of chemical plating, electroplating, magnetron sputtering or plasma smelting coating. The method has the main advantages that: (1) the photocatalytic property is high. to the specific, as the whole surface is completely covered by TiO2. anatase and rutile are evenly inlaid together to play a part in photocatalysis. and therefore, the photocatalytic performance of the material is greatly improved, which is generally 3-20 times of that of the traditional material; (2) the stability is good, to be specific, in the use process, the inactivation of the photocatalyst is not easy to occur, and the photocatalyst is easy to regenerate and can be used a plurality of times; (3) the bonding force is powerful, to be specific, the layers of films penetrate through each other and are pinned one another, so that the problem that the traditional material is easy to fall off is avoided; and (4) the corrosion resistance is good, to be specific, as a substrate foam material is completely covered by the titanium metal and the corrosion resistance of titanium is excellent, the corrosion resistance of the material is improved by 3-10 times.

Description

technical field [0001] The invention is a preparation method of a multi-dimensional photocatalytic material, which involves preparation methods of titanium coating materials such as electroless plating, electroplating, magnetron sputtering and plasma fusion coating methods, as well as anodic oxidation methods, dipping and pulling methods, etc. The invention discloses a method for preparing titanium dioxide on the surface of a titanium coating; it is suitable for forming a photocatalytic film on the surface of various titanium materials; it belongs to the field of photocatalytic material preparation. Background technique [0002] Photocatalytic technology is a new environment-friendly technology, which has shown attractive application prospects in the fields of environment (elimination of chemical pollutants, antibacterial) and energy (photocatalytic water splitting to produce hydrogen). Various photocatalytic materials and photocatalytic products have begun to be applied in ...

AI Technical Summary

Problems solved by technology

For example, in the composite electroless plating process: ① Due to the nano-TiO 2 Difficult to disperse and easy to agglomerate, resulting in TiO 2 The inhomogeneity of distribution and the inhomogeneity of material properties; ②Due to the inhomogeneity of nano TiO 2 The existence of the plating solution causes the instability of the plating solution, which often causes the plating solution to deteriorate after being used for 2-3 times and cannot be used again; ③ TiO in the coating 2 The content is generally relatively low, resulting in relatively low photocatalytic performance

There are also some problems in the composite electroplating process: TiO 2 Difficult to disperse, easy to agglomerate; TiO 2 Low content, low photocatalytic performance; high energy consumption

Simply using the dipping and pulling method is often easy to fall off due to insufficient binding force of the membrane, which is easy to cause secondary pollution

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