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Preparation method of graphite nanometer hole

A nano-hole and graphene technology, applied in graphene, nano-carbon, chemical instruments and methods, etc., can solve the problems of solid-state nano-hole thickness, detection impact, etc., and achieve a suitable pore size, low manufacturing cost, and high mechanical strength. Effect

Inactive Publication Date: 2013-07-31
PEKING UNIV
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  • Abstract
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Problems solved by technology

In addition, solid-state nanopores are usually thick, which will also have a great impact on single-molecule recognition and the detection of long-chain molecules such as DNA.

Method used

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  • Preparation method of graphite nanometer hole
  • Preparation method of graphite nanometer hole
  • Preparation method of graphite nanometer hole

Examples

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Embodiment Construction

[0029] The following examples illustrate the present invention, but these examples should not be construed as limiting the present invention.

[0030] Take the preparation of graphene nanoholes by using copper thin film as an example:

[0031] 1. Pretreatment of copper thin film

[0032] Metal copper film (50nm-1mm) is used as a catalyst for growing graphene by CVD method, and the surface of Cu film is treated with acetone, ethanol and dilute hydrochloric acid to remove impurities such as metal oxides and oil.

[0033] 2. Preparation of single-layer or multi-layer graphene on copper film

[0034] Graphene layers were prepared on copper thin films by chemical vapor deposition. The carbon source used was methane (CH 4 ), the other auxiliary gas in the reaction is hydrogen H 2 And argon Ar, in which hydrogen plays a reducing role and argon plays a protective role.

[0035] (1) Put the treated copper thin film into the CVD process tube furnace.

[0036] (2) into hydrogen and...

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Abstract

The invention discloses a preparation method of graphite nanometer hole, which belongs to the field of thin film material micro nano processing. The method employs a chemical vapor deposition method (CVD) for preparing graphite on a metal copper film, and uses the intrinsic defect structure of graphite to prepare graphite nanometer hole, and the aperture can be from several nanometers to hundreds of nanometers. The graphite nanometer hole has the advantages of high precision, monoatomic level hole depth, chemical modification convenience, conduction, long usage life, low cost, etc. The invention has large applications in the fields of single molecule detection, electrochemistry control, biology identification, etc.

Description

technical field [0001] The invention belongs to the field of material micro-nano processing, and in particular relates to a preparation method of graphene nanoholes. Background technique [0002] With the development of life science and medical testing technology, single molecule detection has gradually become an eye-catching research direction. In recent years, single-molecule detection technologies based on various nanopores can accurately measure the number of single molecules by using the current signal changes caused by single molecules passing through nanopores of comparable size, and their sensitivity has reached the level of chemical analysis. In addition, researchers have been able to successfully detect tiny particles such as small molecules, organic polymers, proteins, and biomolecular complexes by manipulating the size of nanopores. On this basis, the method of chemical modification can also make the nanoholes have some specific sites, so that some specific mole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/186C01B32/194
Inventor 李晨郭剑周梦杰胡保东赵华波魏子钧任黎明傅云义黄如张兴
Owner PEKING UNIV
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