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a g-c 3 no 4 Preparation method of metal-coated core-shell structure nanocomposite

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

Active Publication Date: 2020-07-24
NORTHEASTERN UNIV LIAONING
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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

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  • a g-c <sub>3</sub> no <sub>4</sub> Preparation method of metal-coated core-shell structure nanocomposite
  • a g-c <sub>3</sub> no <sub>4</sub> Preparation method of metal-coated core-shell structure nanocomposite
  • a g-c <sub>3</sub> no <sub>4</sub> Preparation method of metal-coated core-shell structure nanocomposite

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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 size 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 preparatio...

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 size 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 preparatio...

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 size 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 prepar...

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Abstract

The invention belongs to the field of composite nanoparticle synthesis and discloses a g-C 3 N 4 Preparation method of metal-coated core-shell structure nanocomposites. Using a simple microwave reaction method, nanoscale metal powder and urea are ground together and mixed evenly. The magnetic nanoparticles are heated by microwave under a protective atmosphere as reaction conditions. After the reaction for 1 to 10 minutes, the sample under the protective gas is placed in liquid nitrogen. Rapid cooling and synthesis of g‑C 3 N 4 Coated metal spherical shell structure nanoparticles; the g‑C 3 N 4 Metal-coated core-shell nanopowder, with magnetic metal as the core and outer coating of g-C 3 N 4 . g-C prepared by the present invention 3 N 4 The metal-coated core-shell nanopowder composite has the advantages of simple preparation process, high uniformity of sample structure, green environmental protection, and easy large-scale production. Prepare g‑C 3 N 4 Coated metal core-shell nanopowders have broad application prospects for the study of photocatalysis and electrocatalysis (hydrogen evolution reaction).

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 Patents(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/398B01J35/39
Inventor 张雪峰张文婷王朝晖
Owner NORTHEASTERN UNIV LIAONING
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