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A preparation method of carbon nitride ultrathin sheet with adjustable atomic layer number

A carbon nitride, atomic layer technology, applied in chemical instruments and methods, nitrogen compounds, nitrogen and non-metallic compounds, etc., can solve the problems of uncontrollability, long stripping time, low yield, etc. The effect of low cost and fast process

Active Publication Date: 2019-07-23
武汉莱瑞医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the biggest disadvantages of these stripping methods are low yield, long stripping time, and g-C 3 N 4 The number of atomic layers is uncontrollable, which is the bottleneck of its research and practical application

Method used

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  • A preparation method of carbon nitride ultrathin sheet with adjustable atomic layer number
  • A preparation method of carbon nitride ultrathin sheet with adjustable atomic layer number
  • A preparation method of carbon nitride ultrathin sheet with adjustable atomic layer number

Examples

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Effect test

Embodiment 1

[0022] Weigh 3.0g of melamine in a container, put it into a muffle furnace, raise the temperature from room temperature to 550°C in the air, the heating rate is 5°C / min, keep the temperature for 4 hours, and naturally cool to room temperature to obtain yellow Bulk g-C 3 N 4 product.

Embodiment 2

[0024] Weigh 3.0g of dicyandiamide into a container, put it into a muffle furnace, raise the temperature from room temperature to 550°C in the air, the heating rate is 5°C / min, keep the temperature for 4 hours, and naturally cool to room temperature to obtain yellow Bulk g-C 3 N 4 product.

Embodiment 3

[0026] Weigh 6.0g of thiourea into a container, put it into a muffle furnace, and raise the temperature from room temperature to 550°C in the air at a rate of 5°C / min. After constant temperature for 4 hours, cool naturally to room temperature to obtain yellow Bulk g-C 3 N 4 product.

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Abstract

The invention relates to a preparation method of a carbon nitride ultrathin sheet with an adjustable atom layer number. The preparation method comprises the following steps: weighing 3-9g of Bulk g-C3N4 to be quickly heated to 550-580 DEG C in a container for thermal expansion for 10-20min and taking the same out; immediately adding liquid nitrogen till a sample is immersed; and after LN2 is volatilized fully, repeating the steps for 5-10 times to obtain the ultrathin sheet. The carbon nitride ultrathin sheet is prepared by the following steps: weighing 0.12-1.2g of the g-C3N3 ultrathin sheet obtained in the step (1) in the container to be quickly heated to 550-580 DEG C; keeping the temperature for 10-20min; and naturally cooling the same to room temperature to obtain g-C3N4 with a single atom layer and multiple atom layers. The preparation method provided by the invention has the advantages that by replacing a commonly used organic solvent ultrasonic peeling method with a cheap and non-toxic peeling agent, the prepared g-C3N4 ultrathin sheet is fast in process, low in cost, environmental-friendly and suitable for industrial preparation on a large scale.

Description

technical field [0001] The invention relates to the field of photoelectrocatalytic materials, in particular to a carbon material with visible light response-graphite-like carbon nitride (g-C 3 N 4 ) preparation method with adjustable number of atomic layers. Background technique [0002] Ultrathin sheets are a new class of materials with atomic-scale thickness. Because of its unique two-dimensional structural characteristics and thickness dimensions, it will not only enhance the intrinsic properties of its materials, but also produce some new properties that the corresponding bulk materials do not have, such as optical, electrical and mechanical properties. It can be said to be one of the most promising advanced materials in the future for applications in many fields such as energy conversion and energy storage, electronics, catalysts, sensors, and biomedicine. [0003] g-C 3 N 4 It is an infinitely expanded two-dimensional sheet structure formed by connecting triazine ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/082B82Y30/00B01J27/24
CPCB01J27/24B01J35/004B82Y30/00C01B21/0605C01P2002/80C01P2004/04C01P2004/64
Inventor 邹菁孙艳娟江吉周刘忆吴生丽曹媛
Owner 武汉莱瑞医疗科技有限公司
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