A kind of cufeo2-carbon nanotube nanocomposite and its synthesis method

A technology of nanocomposites and carbon nanotubes, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as unsynthesized CuFeO2 nanomaterials, and achieve increased chemical stability, methods Simple and easy to implement, the effect of improving the ability of mass transfer and conduction

Active Publication Date: 2019-05-03
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method still fails to synthesize CuFeO below 100 nm 2 nanomaterials
How to further shrink CuFeO 2 The particle size of the material is controlled in the range of nanometer size, which is rarely reported in the prior art
In addition, for high-efficiency photocatalytic materials, in addition to the catalyst having a large specific surface area and abundant active sites, good material transport and charge conduction properties are indispensable.

Method used

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  • A kind of cufeo2-carbon nanotube nanocomposite and its synthesis method
  • A kind of cufeo2-carbon nanotube nanocomposite and its synthesis method
  • A kind of cufeo2-carbon nanotube nanocomposite and its synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Take 2.271g of CNT and add it into 10mL of water, and disperse it by ultrasonic for 30min to form a CNT dispersion. Fe(NO 3 ) 3 9H 2 O (0.005mol, 2.02g) and Cu (NO 3 ) 2 ·3H 2 O (0.005mol, 1.21g) was fully dissolved in 20mL deionized water to form a transparent mixed solution. Subsequently, the NaOH solution of 5mol / L is slowly added dropwise to the solution under stirring, so that the pH of the mixed solution reaches more than 11. The above-mentioned CNT dispersion liquid was added to the mixed liquid, and stirred to obtain a colloidal suspension. Then, 1 mL of propionaldehyde was added to the colloidal suspension as a reducing agent, and stirring was continued for 15 min. The colloidal suspension was transferred to a 50 mL Teflon-lined hydrothermal kettle, the kettle was tightly closed, and placed in a constant temperature drying oven at 180°C for 48 hours. The reacted hydrothermal kettle was cooled to normal temperature, the supernatant was filtered off, and ...

Embodiment 2

[0031] The preparation method of Example 2 is the same as that of Example 1, except that the amount of CNT added is 6.813g.

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Abstract

The invention relates to a CuFeO2-carbon nanotube nanometer compound and a synthesis method thereof. The synthesis method comprises the following steps that a proper quantity of carbon nanotubes are added into water; ultrasonic dispersion is performed to obtain carbon nanotube dispersion liquid; Fe (III) salts and Cu (II) salts are dissolved in water; under the stirring, a strong alkali solution is slowly and dropwise added, so that the pH is greater than or equal to 11. The carbon nanotube dispersion liquid is added into the mixed liquid; stirring is performed to obtain a colloidal suspension; then, a reducing agent is added for uniform mixing; next, the colloidal suspension is transferred into a hydrothermal kettle for hydrothermal reaction; cooling, centrifugation, washing and drying are performed. CuFeO2 in the CuFeO2-carbon nanotube nanometer compound prepared by the method is nanometer particles and is wrapped at the surface of the carbon nanotubes. Compared with the prior art, the synthesis method has the advantages that the carbon nanotubes are introduced into the synthesis process of a hydrothermal method; the nanometer compound with good mass transfer and conduction capability and regular morphology is obtained; simplicity is realized; the implementation is easy; the large-scale production can be realized.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials, in particular to a CuFeO 2 Nanocomposite and method for synthesizing the same. Background technique [0002] CuFeO 2 It is a delafossite-type mineral, which has the characteristics of good stability and high crustal abundance, and has the properties of p-type semiconductor, so it has a good application prospect in the field of photoelectric catalysis. Currently, CuFeO reported in the literature 2 It is mainly directly synthesized by electrodeposition or hydrothermal method, and the obtained CuFeO 2 All crystal blocks have problems such as high crystallinity, too large material particle size, and too small specific surface area, which are not conducive to catalytic reactions as catalysts. In the field of materials, materials with a size of 0.1-100nm in at least one dimension are called nanomaterials. Due to their small particles and large specific surface area, they have many special phy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J35/10
CPCB01J23/002B01J23/745B01J35/0033B01J35/004B01J35/023B01J35/1019
Inventor 赵数煜魏霄
Owner SHANGHAI JIAO TONG UNIV
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