Preparation method for single-layer graphite-type carbon nitride nanosheet solution

A technology of graphite-type carbon nitride and single-layer graphite, applied in the field of nanomaterials, can solve problems such as unfavorable industrial production, long reaction time period, complicated process, etc., and achieves reduction of van der Waals force, widening of interlayer spacing, and improvement of efficiency. Effect
CN104401948AInactive Publication Date: 2015-03-11CHANGAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGAN UNIV
Publication Date
2015-03-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method for a single-layer graphite-type carbon nitride nanosheet solution. The preparation method comprises the following steps: selecting tripolycyanamide or urea or bipolydicyanamide as a precursor, and performing pyrolytic reaction to obtain graphite-type carbon nitride powder; weighing carbon nitride powder, putting the carbon nitride powder into a ball milling jar with an aqueous solution of a polar solvent or a surfactant, and putting into a jar mill for ball milling; after ball milling for a certain time, pouring out a suspension, performing ultrasonic exfoliation by using an ultrasonic dispersion instrument, and centrifuging the obtained solution; taking a supernatant, namely the single-layer graphite-type carbon nitride nanosheet solution. Compared with the prior art that the single-layer graphite-type carbon nitride nanosheet solution is obtained by using a high-power ultrasonic exfoliation instrument, the preparation method provided by the invention has the advantages as follows: after ball milling pretreatment, the ultrasonic exfoliation on the carbon nitride powder is carried out, so that energy consumption is lower in the preparation process, and the prepared graphite-type carbon nitride nanosheet solution is higher in concentration and relatively low in cost.
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Description

technical field

[0001] The invention belongs to the field of nanometer materials, and in particular relates to a method for preparing a single-layer graphite-type carbon nitride nanosheet solution. Background technique

[0002] Graphite carbon nitride has attracted extensive attention from researchers all over the world due to its excellent properties such as good chemical and thermal stability, non-toxicity, easy availability of raw materials, and no metals. Especially in recent years, it has been discovered for the first time that graphitic carbon nitride has excellent photocatalytic water splitting hydrogen production performance, which has aroused people's strong research interest. Graphite phase carbon nitride has a layered structure, with strong chemical bonds in the layer and extremely weak van der Waals force between layers. By destroying the van der Waals force between layers, a single layer of carbon nitride nanosheets can be obtained. This two-dimensional structur...

Claims

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