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Two-dimensional material nanometer roll as well as preparation method and application thereof

A technology of two-dimensional materials and nanoscrolls, applied in nanotechnology, nanocarbon, and nanotechnology for materials and surface science, can solve the problems of lack of high-yield preparation methods, properties and application research obstacles, and achieve synthesis costs Low cost, short response time, simple and flexible operation

Inactive Publication Date: 2018-06-29
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, research on its properties and applications has been largely hampered experimentally due to the lack of high-yield, facile and reliable preparation methods.

Method used

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  • Two-dimensional material nanometer roll as well as preparation method and application thereof
  • Two-dimensional material nanometer roll as well as preparation method and application thereof
  • Two-dimensional material nanometer roll as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Fabrication of molybdenum disulfide nanoscrolls on silicon (surface-covered silica) substrates

[0088] (1) Preparation of ethanol aqueous solution: Measure 2 ml of ethanol and 1 ml of secondary water respectively, mix them, and prepare an ethanol aqueous solution with a volume ratio of 2:1.

[0089] (2) Preparation of molybdenum disulfide nanoscrolls: drop-coat the ethanol solution in (1) onto the surface of ultra-thin molybdenum disulfide deposited on the silicon substrate or immerse molybdenum disulfide in the aqueous solution, and take it out after 5 minutes.

[0090] (3) Preparation of composite molybdenum disulfide nanorolls: 1 nm-thick copper phthalocyanine was deposited on the surface of the ultra-thin molybdenum disulfide film by organic evaporation, and then soaked in ethanol aqueous solution in (1) for 30 minutes and then taken out.

[0091] Results Molybdenum disulfide nanorolls N1 and composite molybdenum disulfide nanorolls N2 loaded with copper phthalocya...

Embodiment 2

[0100] Fabrication of tungsten disulfide nanoscrolls on silicon substrates (surface covered with silica)

[0101] The same method as in Example 1 was used to prepare tungsten disulfide nanoscrolls, except that a methanol aqueous solution with a volume ratio of 5:1 was used.

[0102] Results Tungsten disulfide nanoscrolls N3 were prepared.

[0103] Morphological characterization of tungsten disulfide nanovolume N3:

[0104] Figure 8 Scanning electron micrographs of the prepared tungsten disulfide nanorolls, it can be seen from the figure that the tungsten disulfide nanorolls have a rod-like, tightly coiled shape, with a length between 0.1-150 μm and an outer diameter of 10-500 nanometers Between, the diameter of the inner hollow layer is between 2-100nm.

[0105] Figure 9 This is a high-resolution transmission electron micrograph of the prepared tungsten disulfide nanoscrolls, and the layer spacing is about 0.63 nm.

Embodiment 3

[0107] Fabrication of molybdenum diselenide nanoscrolls on a silicon substrate (surface covered with silicon dioxide)

[0108] The same method as in Example 1 was used to prepare tungsten disulfide nanoscrolls, except that an aqueous ethanol solution with a volume ratio of 3:1 was used.

[0109] Results Molybdenum diselenide nanoscrolls N4 were prepared.

[0110] Morphological characterization of molybdenum diselenide nanovolume N4:

[0111] Figure 10 Scanning electron microscope photographs of molybdenum diselenide nano-rolls prepared for , it can be seen from the figure that the tungsten disulfide nano-rolls have a rod-like, tightly coiled shape, with a length between 0.1-100 μm and an outer diameter of 10-200 Between nanometers, the diameter of the inner hollow layer is between 5-60nm.

[0112] Figure 11 This is a high-resolution transmission electron micrograph of the prepared molybdenum diselenide nanoscrolls, with a layer spacing of about 0.65 nm.

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Abstract

The invention relates to the field of a nanometer material and preparation thereof, and discloses a two-dimensional material nanometer roll as well as a preparation method and application thereof, wherein the two-dimensional material nanometer roll is obtained by soaking and / or dripping and coating a solution onto the surface of a two-dimensional material thin film and thus automatically curling the two-dimensional material thin film, wherein the two-dimensional material nanometer roll is in a hollow rod shape; the length is 50nm to 1cm; the outer diameter is 5 to 500nm; the inner hollow layerdiameter is 2 to 100 nm; the layer space is 0.3 to 10 nm. The migration rate of a prepared field effect transistor based on the two-dimensional material nanometer roll is 8 to 4000 cm / (V.sec). By using the method, the two-dimensional material nanometer roll with high quality can be prepared at high yield. In addition, the operation of the method is simple and flexible; the synthesis cost is low;the reaction time is short.

Description

technical field [0001] The invention relates to the field of nanomaterials and their preparation, in particular to two-dimensional material nanorolls and their preparation methods and applications. Background technique [0002] Ultra-thin two-dimensional materials are a new class of nanomaterials, which have a sheet-like structure, with a lateral dimension greater than 100 nanometers or as high as several microns or even larger, and a thickness of only a single atom or a few atoms thick (generally less than 5 nanometers). . The search for this class of materials goes back decades, but the revival of ultrathin 2D materials came in 2004, when Novoselov, Geim and their team successfully exfoliated graphene from graphite using scotch tape (this This method is now known as micromechanical exfoliation). The unique two-dimensional features are indispensable for accessing the unprecedented physical, electrical, and chemical properties arising from electronic confinement on a two-d...

Claims

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Application Information

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IPC IPC(8): C01B19/00C01B25/02C01B33/021C01G19/00C01G23/00C01G25/00C01G27/00C01G31/00C01G33/00C01G35/00C01G39/06C01G41/00C01G47/00C01G53/11C01G55/00C01B32/186C01B32/184C23C14/12C23C14/24H01L29/24B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B19/007C01B25/02C01B33/021C01G19/00C01G23/007C01G25/00C01G27/00C01G31/00C01G33/00C01G35/00C01G39/06C01G41/00C01G47/00C01G53/11C01G55/00C01P2004/13C01P2004/133C01P2004/60C01P2004/61C01P2004/62C01P2004/64C01P2004/82C01P2006/40C23C14/12C23C14/24H01L29/24
Inventor 郑健崔雪萍
Owner INST OF CHEM CHINESE ACAD OF SCI
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