A kind of solar photocatalytic porous glass and preparation method thereof

Abstract

The invention discloses solar photocatalytic porous glass. Porous sodium borosilicate matrix glass is dipped in a AgX@Ag precursor solution to be subjected to a hydrothermal reaction, in-situ composition of AgX@Ag crystals on surfaces of pores of the porous sodium borosilicate matrix glass, and the solar photocatalytic porous glass loaded with the AgX@Ag crystals on surfaces is obtained. The solar photocatalytic porous glass can catalytically decompose organic matter under irradiation of sunlight or ultraviolet light, shows excellent photocatalytic performance, is suitable for fields such as photocatalysis, photochemistry, biomedical engineering, biosensors and the like and provides a novel concept and method for an improvement means endowing glass with photocatalytic performance.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and in particular relates to a solar photocatalysis porous glass and a preparation method thereof. Background technique [0002] Environment and energy are major issues that directly affect the survival and development of human beings, and our country is facing particularly severe challenges in this regard. Photocatalytic technology can directly use solar energy to degrade and mineralize various organic and inorganic pollutants in the environment. It can convert low-density solar energy into high-density storable hydrogen energy through photocatalysis. It is considered to be the most promising solution to environmental and energy problems. One of the promising avenues with broad prospects for development. [0003] The core of photocatalytic technology is photocatalytic materials. Traditional photocatalytic materials generally use metal oxides or sulfide semiconductor compounds with large ...

AI Technical Summary

Problems solved by technology

[0003] The core of photocatalytic technology is photocatalytic materials. Traditional photocatalytic materials generally use metal oxides or sulfide semiconductor compounds with large band gaps, such as TiO 2 , this type of material has insurmountable shortcomings: (1) narrow photoresponse range

(2) Low quantum yield

But the prepared TiO 2 Thin films usually do not have good photocatalytic activity, as TiO prepared by chemical vapor deposition or magnetron sputtering 2 The film is usually amorphous, or the content of anatase phase in the film is low, and the film is dense and has a low specific surface area, so the TiO prepared in this way 2 The photocatalytic activity of the film is not high or has no photocatalytic activity, so the TiO 2 Coated glass does not have self-cleaning performance

Although the preparation process of the sol-gel method is simple, the phase structure and composition of the film can be controlled, such as 100% anatase phase, and the film has a porous structure, but the sodium ions in the glass diffuse into the newly prepared film during heat treatment. TiO 2 thin film, greatly reducing the TiO 2 Photocatalytic activity of thin films

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