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Ultrathin metal oxide nanometer sheet preparation method and application thereof

A technology of nanosheets and oxides, which is applied in the field of copper oxide nanosheets to induce ultra-thin metal oxide nanosheets, which can solve the problems of unstable electrochemical performance, uneven thickness of ultra-thin two-dimensional nanosheets, and high cost

Active Publication Date: 2017-03-22
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The experimental method is novel, however, this method uses relatively high-cost block copolymers, and the preparation process is uncontrollable, resulting in uneven thickness of ultra-thin two-dimensional nanosheets, unstable electrochemical performance of the final product, and is not suitable for large-scale preparation

Method used

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  • Ultrathin metal oxide nanometer sheet preparation method and application thereof
  • Ultrathin metal oxide nanometer sheet preparation method and application thereof
  • Ultrathin metal oxide nanometer sheet preparation method and application thereof

Examples

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preparation example Construction

[0058] The invention provides a method for preparing metal oxide nanosheets, comprising the following steps:

[0059] A) The soluble metal source, copper oxide nanosheets and water are mixed to form a reaction solution, and then hydrothermal reaction is carried out after standing still to obtain metal oxide nanosheets.

[0060] The present invention has no special restrictions on the standing conditions, and the conventional standing conditions well known to those skilled in the art can be used. Those skilled in the art can select and adjust according to actual production conditions, raw material conditions and product requirements. The standing time of the invention is preferably 1-48h, more preferably 5-45h, more preferably 10-40h, most preferably 20-30h.

[0061] The present invention has no special limitation on the conditions of the hydrothermal reaction, the conventional hydrothermal reaction conditions well known to those skilled in the art can be used, and those skille...

Embodiment 1

[0088] 1. Synthesis of copper oxide nanosheets

[0089] Weigh 3.0g of copper sulfate pentahydrate and 0.6g of polyvinylpyrrolidone and dissolve them in 300mL of water, dilute 0.93mL of ammonia water (mass fraction 25-28%) to 90mL with water, and after the copper sulfate and polyvinylpyrrolidone are dissolved, dilute the diluted Mix ammonia water with it, stir for 15 minutes, dissolve 2.4g of sodium hydroxide in 10mL of water to form a sodium hydroxide solution, slowly add the sodium hydroxide solution dropwise to the above mixed solution, then stir the reaction solution continuously for 3 days, centrifuge and wash with water one time standby;

[0090] The copper oxide nanosheets prepared in Example 1 of the present invention were characterized.

[0091] see figure 1 , figure 1 Transmission electron micrograph of the copper oxide nanosheets prepared in Example 1 of the present invention. see figure 2 , figure 2 A scanning electron micrograph of the copper oxide nanoshee...

Embodiment 2

[0099] 1. Synthesis of copper oxide nanosheets

[0100]Weigh 3.0g of copper sulfate pentahydrate and 0.6g of polyvinylpyrrolidone and dissolve them in 300mL of water, dilute 0.93mL of ammonia water (mass fraction 25-28%) to 90mL with water, and after the copper sulfate and polyvinylpyrrolidone are dissolved, dilute the diluted Mix ammonia water with it, stir for 15 minutes, dissolve 2.4g of sodium hydroxide in 10mL of water to form a sodium hydroxide solution, slowly add the sodium hydroxide solution dropwise to the above mixed solution, and then continuously stir the reaction solution for 3 days, then centrifuge and wash with water one time standby;

[0101] 2. Preparation of ultrathin Fe by induction of copper oxide nanosheets 2 o 3 Nanosheets

[0102] Sonicate 30 mL of copper oxide nanosheet aqueous solution with a concentration of 1 mg / mL for 20 min, and mix it with 5 mL of ferrous chloride solution with a concentration of 0.024 mol / L (before ferrous chloride is added t...

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Abstract

The invention provides an ultrathin metal oxide nanometer sheet preparation method which comprises the following steps: mixing a soluble metal source, a copper oxide nanometer sheet and water to form reaction solution, standing and performing hydrothermal reaction to obtain a metal oxide nanometer sheet. According to the preparation method, a two-dimensional inorganic metal oxide nanometer material serves as a template to induce and prepare the two-dimensional ultrathin metal oxide nanometer sheet; specifically, a two-dimensional CuO nanometer sheet is utilized as a template material, an epitaxial growth method is utilized to obtain the ultrathin metal oxide nanometer sheet, and the ultrathin metal oxide nanometer sheet is flat in surface and uniform in size and can grow on the surface of the copper oxide nanometer sheet. The preparation method is simple to operate, free of complex equipment, moderate in condition, controllable in process and favorable for industrialization realization; the template material is easy to obtain, and the raw material is wide in source; the prepared ultrathin two-dimensional oxide nanometer material is wide in application prospect in the fields of photoelectric catalysis, electronic devices, energy storage and photoelectric detection.

Description

technical field [0001] The invention relates to the technical field of metal nanomaterials, and relates to a method for preparing ultra-thin metal oxide nanosheets and its application, in particular to a method for preparing ultrathin metal oxide nanosheets by induction of copper oxide nanosheets and its application. Background technique [0002] In recent years, nanomaterials have developed vigorously. Nanostructured materials are referred to as nanomaterials, which refer to the size of their structural units ranging from 1 to 100 nanometers. Since its size is close to the coherence length of electrons, its properties change greatly due to self-organization brought about by strong coherence. Therefore, the properties exhibited by it, such as melting point, magnetism, optics, thermal conductivity, electrical conductivity, etc., are often different from those exhibited by the substance in its bulk state. [0003] Specifically, nanomaterials can be materials whose scales in a...

Claims

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Application Information

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IPC IPC(8): C01B13/14C01G1/02C01G3/02C01G53/04C01G49/06C01G45/02B82Y40/00
CPCC01B13/14C01G1/02C01G3/02C01G45/02C01G49/06C01G53/04C01P2002/72C01P2004/03C01P2004/04C01P2004/24
Inventor 俞书宏胡亚林刘洋溢詹慧娟
Owner UNIV OF SCI & TECH OF CHINA
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