Preparation method of composite material of graphene oxide and titanium oxide nano particles

Abstract

The invention provides a preparation method of a composite material of graphene oxide and titanium oxide nano particles, and belongs to the technical field of preparation methods of catalysts for catalytically degrading a dye. The preparation method comprises the following steps of: dissolving graphite oxide into the water and ultrasonically oscillating; adding titanium dioxide and mixing under stirring; pouring suspension liquid into a teflon bush of a hydrothermal reaction kettle and sealing; reacting for some time while adjusting and controlling the reaction time and the reaction temperature of the hydrothermal method; cooling to the room temperature after the reaction; centrifugally washing the suspension liquid in the telfon bush; and drying the precipitate to obtain the composite material of graphene oxide and titanium dioxide. According to the preparation method of the composite material of graphene oxide and the titanium oxide nano particles, no additives are added, so that the environment is protected, the amount of introduced impurities is decreased, and the deposition or attaching performance of the titanium dioxide nano particles on a graphene oxide substrate is improved; the product is excellent in catalytic performance and can degrade the dye even in a dark condition; and the preparation method is lower in cost, simple and easy in operation, high in stability and repeatability, and suitable for massive production.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation methods for catalytic degradation of dyes, in particular to a preparation method of graphene oxide and titanium dioxide nanoparticle composite materials, especially a preparation of a catalyst capable of catalytic degradation of dyes under dark conditions method. Background technique [0002] With the continuous development of human society, environmental issues have gradually become an important aspect that experts and scholars from all over the world pay close attention to, especially the issue of dye wastewater. Due to the high chroma, complex composition, high toxicity and strong pollution of dye wastewater, it is difficult to be completely degraded. However, the photocatalytic degradation method gradually developed in recent years has attracted the attention of scholars and experts from various countries because of its advantages of fast speed, complete degradation, and non-sele...

AI Technical Summary

Problems solved by technology

[0003] As a commonly used photocatalyst, titanium dioxide has the characteristics of strong oxidation ability, high stability, low cost, non-toxicity, and large specific surface area. However, the surface of titanium dioxide nanoparticles is easy to agglomerate, resulting in a decrease in photocatalytic activity.

However, there is still no significant improvement in the aspect of narrow photoresponse range, and the degradation of dyes still needs to be achieved under certain ultraviolet light conditions.

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