Supramolecular polymerized carbon nitride photocatalyst and preparation method and application thereof

Abstract

The invention discloses a supramolecular polymerized carbon nitride photocatalyst and a preparation method and an application thereof. The supramolecular polymerized carbon nitride photocatalyst is prepared from melamine, cyanuric acid, urea and dimethyl sulfoxide through a molecular polymerization reaction and calcination. The supramolecular polymerized carbon nitride photocatalyst has the advantages of high specific surface area, high photocatalytic activity and the like, can efficiently degrade organic wastewater and is a novel visible light catalyst. The preparation method has the advantages of simple synthetic method, low raw material cost, less energy consumption, short time consumption, easy control of conditions and the like, is suitable for continuous large-scale batch productionand facilitates the industrial use. the supramolecular polymerized carbon nitride photocatalyst of the invention can be used for degrading the organic wastewater, has the advantages of good degradation effect and good stability, and has good practical application prospects.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and relates to a supramolecular polymerized carbon nitride photocatalyst and a preparation method and application thereof. Background technique [0002] With the rapid growth of industrial technology and the rapid expansion of population, the problems of global environmental pollution and resource shortage are becoming more and more serious. Traditional pollution control technologies include physical adsorption, chemical oxidation, biodegradation, etc. However, due to various reasons such as economic cost, secondary pollution, and energy consumption, these technologies can no longer meet the basic needs of environmental purification. Therefore, exploring a low-energy, low-cost, and environmentally friendly pollution control technology is the most urgent task at present. Photocatalytic technology is an environmentally friendly technology with important application prospects in the fields o...

AI Technical Summary

Problems solved by technology

However, in the existing supramolecular polymerization methods, hydrogen bonds are usually used as covalent bonds to carry out superpolymerization to prepare carbon nitride precursors with supramolecular structures. This supramolecular polymerization method using a single hydrogen bond as a covalent bond The prepared carbon nitride still has problems such as small specific surface area, poor separation efficiency of photogenerated charges, and low photocatalytic activity.

In addition, in the process of preparing carbon nitride precursors by supramolecular polymerization, the preparation of carbon nitride precursors is easily affected by factors such as raw material types, solvent types, raw material ratios, reaction temperature, and reaction time. Problems such as complex process, high raw material cost, high energy consumption, long time consumption, and difficult control conditions are not conducive to continuous large-scale mass production and industrial utilization. At the same time, different subsequent treatment methods and different treatment conditions will also affect the production of carbon nitride. Morphology and photocatalytic performance

The existence of the above problems greatly limits the application of supramolecular polymerization in the preparation of carbon nitride

Images