Preparation of Ag loaded TiO2-ZnO inverse opal photonic crystal photocatalytic material

Abstract

The invention relates to a preparation method of a photocatalytic material for an Ag loaded TiO2-ZnO inverse opal photonic crystal. Specifically, the method includes: taking poly(styrene-acrylamide) microsphere photonic crystal as a template, conducting filling with TiO2-ZnO composite sol, conducting ignition to remove the template, thus obtaining a TiO2-ZnO inverse opal photonic crystal; adsorbing AgNO3, and reducing Ag<+> into nano-Ag by ultraviolet irradiation so as to obtain the nano-Ag loaded TiO2-ZnO inverse opal photonic crystal; and representing the surface appearance and photonic band gap through a scanning electron microscope and a reflection spectrum. Under the irradiation of a metal halide light, the prepared photonic crystal shows good photocatalytic performance on photocatalytic degradation of Rhodamine B, which is decided by a high specific surface area of the inverse opal photonic crystal and the photocatalytic properties of noble metal nano-particles. The method provided by the invention is of important significance for preparation and development of novel photocatalytic materials.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a preparation method of a photocatalysis material. The photocatalytic material is an Ag-loaded TiO 2 The photocatalytic material of -ZnO inverse opal photonic crystal can be used to improve the photocatalytic efficiency of the material, and more effectively degrade organic pollutants in domestic and industrial wastewater. Background technique [0002] In recent years, many photocatalysts for degrading organic matter and splitting water have been developed, such as SrTiO 3 , ZrO 2 、 Ta 2 o 5 , NaTaO 3 : La, CdS and graphite phase C 3 N 4 etc. But since TiO 2 Non-toxic, easy to obtain, low cost and other characteristics, making TiO 2 Research has also been uninterrupted. With the continuous development of nanotechnology, people have realized the relationship between structure and material properties, and the development of TiO with nanostructure 2 Research on photocatalyst...

AI Technical Summary

Problems solved by technology

[0007] In summary, the hierarchical macroporous TiO 2 Materials such as macroporous ordered structures of inverse opal photonic crystals, TiO loaded with noble metals 2 Photocatalytic materials such as nanoparticles have achieved certain research results, but the photocatalytic efficiency needs to be further improved; at the same time, in practical applications, the use of TiO 2 The photocatalytic activity degrades organic pollutants and industrial wastewater. At present, solid powder products are mainly used, which is inconvenient to use. The biggest problem is that post-processing is complicated and recycling is difficult.

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