Metal-silver-supported titanium dioxide photocatalyst and preparation method thereof

Abstract

The invention discloses a metal-silver-supported titanium dioxide photocatalyst and a preparation method thereof. The photocatalyst material is composed of metal-silver-supported titanium dioxide microspheres, wherein the diameter of the titanium dioxide microspheres is 300-500nm; the supported metal silver is dispersed in the titanium dioxide microspheres in a bulk phase homogenization manner; the diameter of the metal silver particles is 5-15nm; and the photocatalyst material has very high photocatalysis efficiency for simulated organic pollutant rhodamine B in water body under the irradiation of ultraviolet and visible light. The preparation method is simple in process, safe to operate and low in cost; and all the used reagents are cheap and accessible, and are free of substances poisonous / harmful to human body or environment.

Description

technical field

[0001] The invention belongs to the technical field of composite material preparation, and relates to a titanium dioxide-based photocatalytic material, in particular to a metal silver-loaded titanium dioxide photocatalyst, and also relates to a preparation method of the metal silver-loaded titanium dioxide photocatalyst. Background technique

[0002] In recent years, titanium dioxide semiconductor photocatalytic materials have developed rapidly due to their cheap, easy-to-obtain, non-toxic, harmless, stable chemical properties, and strong photocorrosion resistance, and have been used in water pollution control, air purification, and antibacterial ceramics. The field has achieved huge economic benefits. However, in practical applications TiO 2 Photocatalytic degradation of organic pollutants has the disadvantages of high photogenerated carrier recombination rate, low quantum yield, and its own wide band gap, which cannot effectively use visible light, which h...

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