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Preparation method of boron nitride nanosheet-silver nanoparticle composite material

A technology of silver nanoparticles and composite materials, applied in the field of semiconductor material preparation technology

Inactive Publication Date: 2013-07-17
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And there is no method for preparing boron nitride / silver nanoparticle composite material at present, what the present invention adopts is to utilize liquid phase reduction method to prepare boron nitride nanosheet-silver nanoparticle composite material

Method used

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  • Preparation method of boron nitride nanosheet-silver nanoparticle composite material

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Embodiment

[0020] The process and steps for preparing boron nitride nanosheet-silver nanoparticle composites are as follows:

[0021] Weigh 500 mg of boron nitride powder (98%) and place it in a beaker, add 500 ml of isopropanol to prepare a suspension of boron nitride-isopropanol, and conduct discontinuous ultrasonic treatment with a low-power ultrasonic cleaner at room temperature for 10 ~15 h, and its optimal value is 12 h to obtain a boron nitride dispersion. After standing overnight, centrifuge the dispersion for 5-15 min, the optimum value is 10 min, and the rotation speed is 1000-3000 r / min, the optimum value is 2000 r / min; absorb the supernatant liquid on a clean glass Reserve in bottle.

[0022] In the supernatant obtained above, add 0.2 ml of hydrazine hydrate (N 2 h 4 ·H 2 O) solution, and constantly stirring, to obtain boron nitride-hydrazine hydrate mixed solution. According to a certain molar ratio, namely BN:N 2 h 4 ·H 2 O: AgNO 3 =1:25:5, slowly drop the s...

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Abstract

The invention relates to a method for preparing a boron nitride nanosheet-silver nanoparticle composite material by a simple liquid phase reduction method and belongs to the technical field of semiconductor material preparation. The preparation method is characterized by utilizing the liquid phase reduction method to prepare the boron nitride nanosheet-silver nanoparticle composite material. The process is simple, convenient and easy to implement, and low in equipment requirement, the composite material prepared by the method is low in impurity content, and silver nanoparticles generated on the surface layer of the boron nitride nanosheet are small in grain diameter, random in distribution and high in bonding strength with the boron nitride nanosheet. Researches show that the composite material has very good surface plasma resonance effect, can be applied to photoelectric detection technologies, has high surface enhanced Raman scattering activity, and has huge potential application in the field of bioprobes.

Description

technical field [0001] The invention relates to the preparation of a boron nitride nanosheet-silver nanoparticle composite material by using a simple liquid phase reduction method, and belongs to the technical field of semiconductor material preparation technology. Background technique [0002] Boron nitride nanosheet is a typical graphene-like film, which belongs to the hexagonal crystal system. It can be regarded as that in the graphene hexagonal honeycomb structure, N atoms and B atoms are used to replace C atoms in an orderly manner, thus forming a New film material with hexagonal honeycomb structure. Recent studies have shown that in addition to many excellent properties of graphene, boron nitride nanosheets also have some properties superior to graphene, such as its high temperature oxidation resistance, which allows it to work in high temperature environments without being oxidized , can be used in harsher environments. These properties make boron nitride have broad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 杨珊珊张兆春赵军郑厚里
Owner SHANGHAI UNIV
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