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Mesoporous graphite type carbon nitride/nitrogen doped graphene sol nanocomposite and method for preparing same

A graphitic carbon nitride, nanocomposite material technology, applied in chemical instruments and methods, nanotechnology, nanotechnology and other directions, can solve problems such as no public reports, and achieve a wide range of applications, low cost and high yield. Effect

Active Publication Date: 2013-03-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, up to now, there are no public reports on the mesoporous graphitic carbon nitride / nitrogen-doped graphene nanocomposites and their preparation methods.

Method used

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  • Mesoporous graphite type carbon nitride/nitrogen doped graphene sol nanocomposite and method for preparing same

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Embodiment 1

[0027] In this embodiment, mpg-C 3 N 4 The preparation method of N-graphene sol nanocomposite material is to be finished by following steps:

[0028] (1) Add 40 mg of graphene oxide and 20 mg of sodium dodecylbenzenesulfonate (the mass ratio of graphene oxide to surfactant is 2:1) into 3 mL of deionized water, and mix well by ultrasonication for 30 minutes to obtain a colloidal solution . Wherein, the mass ratio of graphene oxide and surfactant is 2:1, and the concentration of colloidal solution is 20g / L;

[0029] (2) Add 40mg mpg-C to the colloidal solution 3 N 4 , among them, graphene oxide and mpg-C 3 N 4 The mass ratio of graphene oxide to nitrogen-containing compound ammonia water is 1:45, and then add 1.8g of ammonia water, (the concentration of ammonia water is 25%) (the mass ratio of graphene oxide to nitrogen-containing compound ammonia water is 1:45) to the mixed solution. Cover and stir evenly at 25°C for 30 minutes.

[0030] (3) Transfer the mixture into a ...

Embodiment 2

[0034]The present embodiment is different from embodiment 1 in that: the surfactant used is sodium dodecylsulfonate. Other steps and parameters are the same as in Example 1. In the mesoporous graphite-type carbon nitride / nitrogen-doped graphene sol nanocomposite material prepared in this embodiment, the number of layers of nitrogen-doped graphene is 3-5 layers, and the layer thickness is 1.3nm; The pore size of carbon nitride is 10-15nm, and the specific surface area is 80-300m 2 / g, distributed uniformly and disorderly on the surface of nitrogen-doped graphene.

Embodiment 3

[0036] The difference between this example and Example 1 is that the masses of graphene oxide and sodium dodecylbenzenesulfonate used are 50 mg and 10 mg respectively, and the mass ratio of the two is 5:1. Other steps and parameters are the same as in Example 1. In the mesoporous graphite-type carbon nitride / nitrogen-doped graphene sol nanocomposite material prepared in this embodiment, the number of layers of nitrogen-doped graphene is 4-6 layers, and the layer thickness is 1.4nm; The pore size of carbon nitride is 10-15nm, and the specific surface area is 80-300m 2 / g, distributed uniformly and disorderly on the surface of nitrogen-doped graphene.

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Abstract

The invention belongs to the technical field of new energy materials and preparation thereof, and relates to a mesoporous graphite type carbon nitride / nitrogen doped graphene sol nanocomposite and a method for preparing the same. The method comprises the following steps that: graphene oxide and a surfactant are added into deionized water and are ultrasonically mixed uniformly to obtain a colloidal solution; mesoporous graphite type carbon nitride is added to be continuously and ultrasonically treated, and a nitrogen-containing compound is then added to be stirred at constant temperature to form a mixed solution; and hydrothermal reaction and natural cooling are then carried out, ammonia which is adsorbed to a material surface is removed through washing, and the material is dried. The yield of the prepared mesoporous graphite type carbon nitride / nitrogen doped graphene sol nanocomposite is high, and the mesoporous graphite type carbon nitride / nitrogen doped graphene sol nanocomposite has a wide application scope, can be applied to fuel cells, photodegradation reactors and the like. The method has the advantages of simplicity in technology, low cost, high yield, short period and environmental friendliness, and can be suitable for industrially producing the mesoporous graphite type carbon nitride / nitrogen doped graphene sol nanocomposite in a large scale.

Description

technical field [0001] The invention belongs to the technical field of new energy materials and their preparation, and relates to a nano-composite mesoporous graphite-type carbon nitride / nitrogen-doped graphene sol nano-composite material and a preparation method thereof. Background technique [0002] Graphene is a new type of nanomaterial stacked by carbon atoms in a hexagonal shape. It has many excellent properties, such as large specific surface area, high thermal conductivity, fast charge transfer rate, etc. It is used in many fields such as material chemistry, photoelectrochemistry, and catalysts. widely. In order to further enhance the various properties of graphene, in addition to controlling the morphology, doping foreign atoms is also an important method to enhance the properties of graphene. Doping foreign atoms on carbon-based materials such as graphene can modify the internal structure, increase the free charge density on the surface, and enhance the electrical ...

Claims

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Application Information

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IPC IPC(8): B01J13/00B82Y30/00B82Y40/00
Inventor 冯雷雨杨兰琴陈银广罗景阳
Owner TONGJI UNIV
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