Compound base of precious metal nanometer array and single layer graphene and preparation method thereof

A single-layer graphene and nanoarray technology, applied in the field of nanomaterials, can solve the problems of difficulty in obtaining large-area composite materials, reduced graphene performance, poor controllability, etc. less demanding effects

Inactive Publication Date: 2013-02-27
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing preparation methods of graphene composite nanomaterials mainly include the following: (1) intercalation method, which has poor controllability and low yield, and is generally used as a basic research; (2) blending method, which is often used for graphene and Polymer composites, composite materials are made by blending polymers and graphene nanoparticles, but it is difficult to obtain composite materials with large area and uniform thickness; (3) sol-gel method, graphene sheet and metal oxide sol Composite materials are prepared after mixing, but this method will destroy the planar carbon skeleton of graphene, resulting in defects, resulting in the degradation of graphene properties

Method used

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  • Compound base of precious metal nanometer array and single layer graphene and preparation method thereof
  • Compound base of precious metal nanometer array and single layer graphene and preparation method thereof
  • Compound base of precious metal nanometer array and single layer graphene and preparation method thereof

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Embodiment 1

[0046]On a single-sided finely polished single-crystal silicon wafer, polystyrene nanospheres with a diameter of 460 nm were prepared by a liquid surface self-assembly method to form a single-layer closely arranged mask. Using a vacuum coating machine, a 10 nm thick Cr film was first evaporated on a polystyrene nanosphere mask, and then a 60 nm thick Ag film was evaporated to obtain a substrate. The substrate was sonicated in chloroform for 20 seconds and allowed to stand for 10 minutes to remove the polystyrene microspheres to obtain Ag nanoarrays, which were then washed in alcohol and deionized water in sequence.

[0047] The Cu foil with a thickness of 25 μm was treated by chemical mechanical polishing to ensure that the surface of the Cu foil was clean and smooth; then, at 1020 ° C, in a mixed gas atmosphere of methane and hydrogen, the treated Cu foil was grown on the treated Cu foil by chemical vapor deposition. layer graphene, during the graphene growth process, the flo...

Embodiment 2

[0051] On a single-sided finely polished single-crystal silicon wafer, polystyrene nanospheres with a diameter of 800 nm were prepared by liquid surface self-assembly method to form a single-layer closely arranged mask. Using a vacuum coating machine, a 10 nm thick Cr film was first evaporated on a polystyrene nanosphere mask, and then a 60 nm thick Ag film was evaporated to obtain a substrate. Sonicate the substrate in chloroform for 20 seconds, let it stand for 10 minutes, remove the polystyrene nanosphere mask, and clean it in alcohol and deionized water in turn.

[0052] The Cu foil with a thickness of 25 μm was treated by chemical mechanical polishing to ensure that the surface of the Cu foil was clean and smooth; then, at 1020 ° C, in a mixed gas atmosphere of methane and hydrogen, the treated Cu foil was grown on the treated Cu foil by chemical vapor deposition. layer graphene, during the graphene growth process, the flow rates of methane and hydrogen were controlled to...

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Abstract

The invention discloses a compound base of a precious metal nanometer array and single layer graphene and a preparation method thereof. The invention includes transferring the single layer graphene prepared by a chemical vapor deposition method to the precious metal nanometer array, keeping warm for 30 minutes under the temperature of 50 DEG C, firmly combining the single layer graphene and the precious metal nanometer array to form the compound base of the precious metal nanometer array and the single layer graphene. The preparation method is simple and easy to operate and low in raw material price. The obtained compound base is order in large area. The compound base can be applied to photoelectron devices and the fields of surface enhanced raman chips, thin film solar batteries and the like.

Description

[0001] technical field [0002] The invention belongs to the field of nanometer materials, in particular to a composite substrate of noble metal nanoarray and single-layer graphene and a preparation method thereof. Background technique [0003] Graphene is a new type of carbon nanomaterial, which is a single atomic layer material with a two-dimensional honeycomb structure composed of carbon atoms and a benzene ring as the basic unit. , one-dimensional carbon nanotubes, three-dimensional graphite, etc.). Due to its unique structure and excellent optical, electrical, and thermal properties, graphene is expected to be used in high-speed transistors, transparent electrodes, solar cells, nanoelectromechanical systems (NEMS) devices, composite materials, catalytic materials, gas sensors, and gas storage. Therefore, graphene has rapidly become a research hotspot in the fields of chemistry, materials science and condensed matter physics in recent years, and has strong development a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C23C14/04C23C14/14C23C16/26C23C16/01B82Y30/00B82Y40/00C01B32/194
Inventor 肖湘衡戴志高应见见任峰蒋昌忠
Owner WUHAN UNIV
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