Phosphorus-hybridized graphitic carbon nitride nanosheets loaded with gold nanoparticles, and preparation method and application thereof

Abstract

The invention discloses a phosphorus hybrid graphite phase carbon nitride nanosheet loaded with gold nanoparticles and its preparation method and application. The phosphorus hybrid graphite phase carbon nitride nanosheet loaded with gold nanoparticles is made of phosphorus hybrid graphite. Phase carbon nitride nanosheets are used as carriers, and gold nanoparticles are loaded on their surfaces. The preparation method includes: preparing a dispersion liquid of phosphorus hybrid graphite phase carbon nitride nanosheets, and mixing it with a chloroauric acid solution to prepare the nanosheets of the present invention. The phosphorus hybrid graphite phase carbon nitride nanosheets loaded with gold nanoparticles of the present invention have the advantages of strong photoelectric ability, high stability, large specific surface area, regular and orderly pore diameter, good dispersion performance, and high light energy utilization rate, and its preparation method has the following advantages: It has the advantages of simple preparation process and low cost, and is suitable for large-scale preparation. The phosphorus hybrid graphite phase carbon nitride nanosheets loaded with gold nanoparticles of the present invention can be used as functional nanomaterials to detect or degrade environmental pollutants, can achieve good results, and have good application prospects.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a functional nanometer material for detecting and degrading environmental pollutants, in particular to a phosphorous hybrid graphite phase carbon nitride nanosheet loaded with gold nanoparticles and a preparation method and application thereof. Background technique [0002] With the gradual shortage of fossil energy, more and more people turn their attention to renewable energy such as solar energy. Semiconductor photoelectrochemical catalysis technology has attracted great attention of researchers, and has been widely used in light-emitting devices, optical detectors, photoelectrochemical cells, etc., and can also solve many problems of energy and the environment. Photoelectrochemical catalysis accelerates the photoelectrochemical reaction by selecting the semiconductor photoelectrode (or powder) material and (or) changing the surface state of the electrode (surface treatment or...

AI Technical Summary

Problems solved by technology

However, the ubiquitous problems include low light energy conversion efficiency, insufficient catalyst activity, insufficient catalyst selectivity, insufficient catalyst life, and easy recombination of photogenerated carriers.

[0003] As a photocatalyst for photocatalytic hydrogen production and environmental pollution treatment, the non-metallic semiconductor carbon nitride (g-C 3 N 4 ) has received extensive attention and research, but it still has shortcomings: low specific surface area and high carrier recombination rate

However, these methods have problems such as complicated process, difficult operation, and high cost, and the graphitic carbon nitride photocatalysts prepared by them still have the following shortcomings: small specific surface area, incomplete separation of electrons and holes, slow electron transport speed, and the occurrence of recombination etc.

The existence of the above problems greatly limits the application range of new photoelectrochemical catalytic materials based on graphitic carbon nitride in the field of photoelectrochemical catalysis, so it is necessary to use simple optimization methods to significantly improve the photoelectrochemical performance of graphitic carbon nitride

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