Preparation method of three-dimensional photocatalytic materials supported by graphene nanobelts

A technology of graphene nanobelts and photocatalytic materials is applied in the field of preparation of three-dimensional photocatalytic materials to achieve the effects of improving activity and photocatalytic performance and simple preparation process
CN105536840BActive Publication Date: 2018-03-09SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI UNIVERSITY OF ELECTRIC POWER
Publication Date
2018-03-09

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Abstract

The invention relates to a method for preparing three-dimensional photocatalytic materials with graphene nanoribbon-supported semiconductors. The titanium dioxide precursor is dissolved in a mixed solution of hydrogen peroxide and ammonia water, stirred until the solution is yellow and clear, and carbon nitride is added. When the solution becomes turbid, it is centrifuged and washed. Then add deionized water and ultrasonic-treated graphene nanoribbons, stir and react in the reactor, then centrifuge, wash, and dry, and then calcine in a nitrogen atmosphere to obtain the graphene nanoribbon load. Semiconductor three-dimensional photocatalytic materials. Compared with the existing technology, the present invention has a simple preparation process and effectively improves the activity and photocatalytic performance of the catalyst. The addition of graphene nanoribbons makes the material have an obvious response in the visible light region.
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Description

technical field

[0001] The invention relates to the technical field of preparation of catalyst materials for photocatalytic degradation of pollutants, in particular to a preparation method of a three-dimensional photocatalytic material supported by graphene nanobelts on semiconductors. Background technique

[0002] In terms of energy conversion and environmental purification, photocatalytic technology is considered as a green technology that can effectively utilize solar energy. Titanium dioxide (TiO 2 ) as an important catalyst has many advantages: low cost, easy to obtain, strong physical and chemical stability, etc. However, the band gap of titanium dioxide is 3.2 eV, so that it can only absorb ultraviolet light, resulting in insufficient utilization of sunlight. In order to be able to synthesize photocatalytic materials with visible light response, we synthesized carbon nitride (C 3 N 4 ) into consideration. As a new metal-free polymeric semiconductor with a band ga...

Claims

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