Weak-luminescence g-C3N4 photocatalyst and preparation method and application thereof

A photocatalyst, g-c3n4 technology, applied in the field of photocatalytic materials, can solve the problems of low specific surface area, application limitation, low photocatalytic efficiency, etc., and achieve the effect of stable chemical properties and good stability
CN110560140AInactive Publication Date: 2019-12-13LIAONING UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
LIAONING UNIVERSITY
Publication Date
2019-12-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a weak-luminescence g-C3N4 photocatalyst and a preparation method and application thereof. According to the invention, melamine and benzoic acid are used as raw materials; benzoic acid is used for modifying a melamine precursor; and the g-C3N4 photocatalyst is prepared through roasting. The g-C3N4 prepared by the preparation method disclosed by the invention has relativelylow photoluminescence intensity, inhibits the recombination of photon-generated carriers, and can effectively improve energy conversion efficiency, thereby improving photocatalytic efficiency. The g-C3N4 prepared by using the method has multi-slit surface morphology, which is beneficial for conveying photon-generated carriers to the surface of the semiconductor photocatalyst. The method has the advantages of low cost and convenient operation. The photocatalyst can degrade harmful substances such as rhodamine B under the irradiation of visible light, and thus has important practical applicationvalue in environmental purification and clean energy production.
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Description

technical field

[0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to the preparation of weakly luminous g-C by modifying precursors 3 N 4 Methods and applications of photocatalysts. Background technique

[0002] As energy and environmental issues increasingly restrict the development of modern society, photocatalytic technology has received increasing attention. Photocatalytic materials can use sunlight to hydrolyze hydrogen, decompose harmful substances, and solve energy and environmental problems faced by human development. At present, photocatalysts produced by light irradiation have a high recombination rate of electron-hole pairs, low photon utilization efficiency, and low photocatalytic activity. Therefore, it is necessary to study the modification of semiconductor photocatalysts. The purpose and function of modification include improving excitation charge separation and inhibiting carrier recombination to imp...

Claims

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