Preparation method of surface carbon vacancy modified graphite-phase carbon nitride photocatalyst and application of preparation method in production of hydrogen peroxide

Abstract

The invention provides a preparation method of surface carbon vacancy modified graphite-phase carbon nitride photocatalyst and an application of the preparation method in the production of hydrogen peroxide. The preparation method has the advantages of cheap and available raw materials, simple technology, green and environmental protection, easy industrial production and the like. Compared with pure-phase g-C3N4, surface carbon vacancy modified g-C3N4 has the advantages that the band gap of g-C3N4 is narrowed and electron delocalization is enlarged due to existence of carbon vacancy, the carbon vacancy becomes the center in charge capture, and the capacity of the surface carbon vacancy modified g-C3N4 to produce H2O2 under the same condition is 14 times that of common g-C3N4 due to existence of the carbon vacancy.

Description

technical field

[0001] The invention belongs to the technical field of preparation of photocatalytic materials and treatment of environmental pollutants, in particular to a carbon vacancy modified graphite phase carbon nitride (g-C 3 N 4 ) preparation method and its use in the production of hydrogen peroxide (H 2 o 2 ) process application. Background technique

[0002] Hydrogen peroxide (H 2 o 2 ) is a colorless and transparent strong oxidizing agent. Since its reaction product is only water or oxygen, it is often used as an environmentally friendly green oxidant. h 2 o 2 It is widely used in all aspects of production and life, such as pulp and textile bleaching, chemical synthesis, environmental protection, medical and food sterilization, etc. From the perspective of hydrogen peroxide production technology, there are two relatively mature production methods at present, namely electrolysis method and anthraquinone method. Among them, the electrolytic method has a s...

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