Carbon nitride and preparation method thereof

Abstract

The invention discloses a preparation method of carbon nitride, which comprises the following step: carrying out high-temperature annealing on 5-azacytosine in a non-oxidizing atmosphere to prepare the carbon nitride, wherein the heating rate is 0.2-10 DEG C / minute, the annealing temperature is 400-700 DEG C, and the annealing time is 2-8 hours. The method can be used for preparing the high-specific-area carbon nitride material under the condition of no template, and thus, has the advantages of simplified technique, no template, one-step preparation and the like.

Description

technical field [0001] The invention relates to the field of functional nanotechnology, in particular to a carbon nitride and a preparation method thereof. Background technique [0002] Due to its unique physical structure and electronic energy band structure, carbon nitride has attracted extensive attention in the fields of photocatalysis, energy conversion, electrocatalysis, drug delivery, catalyst support, and solar cells. The specific surface area of ​​carbon nitride prepared by traditional thermal condensation polymerization methods such as nitrile amine, bis-nitrile amine, and melamine is small, which restricts the application of carbon nitride in the above-mentioned fields. By changing the nanoparticle size and morphology of carbon nitride to increase its specific surface area, its practical performance can be improved. At present, although a series of carbon nitride quantum dots, nanowires, nanotubes, nanorods, nanoparticles, nanospheres, nanoclusters, etc. with dif...

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Problems solved by technology

At present, although a series of carbon nitride quantum dots, nanowires, nanotubes, nanorods, nanoparticles, nanospheres, nanoclusters, etc. with different shapes have been prepared by adjusting the process or using the template method, the steps are cumbersome and time-consuming. and other shortcomings

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