Preparation method of g-C3N4 coated metal nano composite with core-shell structure

A nanocomposite, core-shell structure technology, applied in the field of nanomaterial preparation, can solve the problems of application limitation and expensive equipment, and achieve the effects of shortened reaction time, rapid reaction and high purity

Active Publication Date: 2018-12-18
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reason why the laser method has attracted the attention of many researchers is that the laser method can control its energy output by changing the frequency of light, so it is an easy-to-control method with high repeatability, but the required equipment is relatively Expensive, making this method very limited in application

Method used

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  • Preparation method of g-C3N4 coated metal nano composite with core-shell structure
  • Preparation method of g-C3N4 coated metal nano composite with core-shell structure
  • Preparation method of g-C3N4 coated metal nano composite with core-shell structure

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Embodiment 1

[0032] figure 1 For the coating type g-C in the method of the present invention 3 N 4 / Schematic diagram of the structure of the metal nanocomposite. Such as figure 1 As shown, the core-shell coating material nanoparticles include: a carbonitride shell layer 101 coated on the outside; an inner metal core layer 102, and Fe nanoparticles are selected in this embodiment.

[0033] The carbonitride shell layer 101 is generally g-C 3 N 4 , or carbon-nitrogen compounds of similar composition.

[0034] The metal core 102 can be prepared by direct current arc method, and its particle diameter is 1 to 300 nm.

[0035] Further, the nanoparticles 102 in this example are prepared using hydrogen gas and argon gas, and cooled with cooling water, and the particle diameter of the metal nanoparticles is 1 to 200 nm.

[0036] Simultaneously, the present invention provides above-mentioned embodiment preparation method:

[0037] figure 2 Coated g-C shown 3 N 4 / Flowchart of the prepar...

Embodiment 2

[0050] figure 1 For the coating type g-C in the method of the present invention 3 N 4 / Schematic diagram of the structure of the metal nanocomposite. Such as figure 1 As shown, the core-shell coating material nanoparticles include: a carbonitride shell layer 101 coated on the outside; an inner metal core layer 102, and Co nanoparticles are selected in this embodiment.

[0051] The carbonitride shell layer 101 is generally g-C 3 N 4 , or carbon-nitrogen compounds of similar composition.

[0052] The metal core 102 can be prepared by direct current arc method, and its particle diameter is 1 to 300 nm.

[0053] Further, the nanoparticles 102 in this example are prepared using hydrogen gas and argon gas, and cooled with cooling water, and the particle diameter of the metal nanoparticles is 1 to 200 nm.

[0054] Simultaneously, the present invention provides above-mentioned embodiment preparation method:

[0055] figure 2 Coated g-C shown 3 N 4 / Flowchart of the prepar...

Embodiment 3

[0067] figure 1 For the coating type g-C in the method of the present invention 3 N 4 / Schematic diagram of the structure of the metal nanocomposite. Such as figure 1 As shown, the core-shell coating material nanoparticles include: a carbonitride shell layer 101 coated on the outside; and a metal core layer 102 inside, and Ni nanoparticles are selected in this embodiment.

[0068] The carbonitride shell layer 101 is generally g-C 3 N 4 , or carbon-nitrogen compounds of similar composition.

[0069] The metal core 102 can be prepared by direct current arc method, and its particle diameter is 1 to 300 nm.

[0070] Further, the nanoparticles 102 in this example are prepared using hydrogen gas and argon gas, and cooled with cooling water, and the particle diameter of the metal nanoparticles is 1 to 200 nm.

[0071] Simultaneously, the present invention provides above-mentioned embodiment preparation method:

[0072] figure 2 Coated g-C shown 3 N 4 / Flowchart of the pr...

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Abstract

The invention belongs to the field of composite nano particles, and discloses a preparation method of a g-C3N4 coated metal nano composite with a core-shell structure. A simple microwave reaction method is adopted, nano level metal powder and urea are grinded together and evenly mixed in a protective atmosphere, microwaves are utilized to heat magnetic nano particles to carry out reactions, after1 to 10 minutes of reactions, the reaction product is rapidly cooled by placing the reaction product in liquid nitrogen in a protective gas, the g-C3N4 coated metal nano particle with a core-shell structure is synthesized, and the g-C3N4 coated metal core-shell nano powder comprises a magnetic metal inner core, which is coated by g-C3N4. The prepared g-C3N4 coated metal core-shell nano powder composite has the advantages of simple preparation technology, uniform product structure, green and environmentally friendly property, and easiness for massive production. The prepared g-C3N4 coated metalcore-shell nano powder has a wide application prospect in fields such as photocatalysis research, electro-catalysis (hydrogen evolution reaction) research, and the like.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a g-C 3 N 4 Preparation method of metal-coated core-shell nanocomposite. Background technique [0002] Coated metal nanoparticles have unique physical and chemical properties, and the coating layer has a protective effect on the coated metal particles, which expands the application range of this type of nanoparticle material, making this material in chemistry, materials, physics, etc. The field has huge potential application value. In the field of electronics, coated metal nanoparticles have excellent electrical properties, such as high conductivity and high dielectricity, due to their large proportion of interface units, as well as size and interface effects. This material is used in electrical quantum devices. The application on the Internet is a research hotspot at present. In the field of catalysts, coated metal nanoparticles can be used as ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/004B01J35/0086
Inventor 张雪峰张文婷王朝晖
Owner NORTHEASTERN UNIV
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