One-dimensional metal oxide/carbide composite material and preparation method thereof

A technology of composite materials and oxides, which is applied in the field of synthesis of inorganic nano functional materials, can solve the problems of lack of catalytic, adsorption and electrochemical activities, high energy consumption, complex synthesis process, etc., and achieve good active sites and low energy consumption , The effect of the simple preparation method

Active Publication Date: 2021-11-16
SUZHOU ADVANCED MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis of carbides usually adopts a high-temperature thermal reduction method. The high-temperature environment used generally needs to reach above 1000°C, which consumes a lot of energy. The generated carbides are often block materials, which do not have good catalytic, adsorption and electrolytic chemical activity
However, although one-dimensional porous carbides with high activity can be obtained by using the template method, the synthesis process is very complicated.

Method used

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  • One-dimensional metal oxide/carbide composite material and preparation method thereof
  • One-dimensional metal oxide/carbide composite material and preparation method thereof
  • One-dimensional metal oxide/carbide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A preparation method of a one-dimensional metal oxide / carbide composite material, comprising the steps of:

[0046] a. Preparation of one-dimensional strip metal-organic framework materials:

[0047] Take Ni(NO 3 ) 2 ·6H 2 Add O (1.2mM) into 6mL of water, then add 12mL of 4,4'-biphenyldicarboxylic acid (1.2mM) and sodium hydroxide (2.4mM) into the aqueous solution under stirring, stir well, and put it into the reaction kettle , treated at 170°C for 12 hours, centrifuged, washed, and dried to obtain a one-dimensional strip-shaped metal-organic framework material.

[0048] b. Preparation of one-dimensional metal oxide / carbide composites:

[0049] Put the one-dimensional strip metal-organic framework material prepared in step a into a porcelain cup, transfer it into a tube furnace, feed it with oxygen, raise the temperature to 400°C at a rate of 10°C / min, calcinate for 2 hours, and wait for cooling Finally, a fluffy black powder is obtained, which is a one-dimensional...

Embodiment 2

[0051] A preparation method of a one-dimensional metal oxide / carbide composite material, comprising the steps of:

[0052] a. Preparation of one-dimensional strip metal-organic framework materials:

[0053] Take Ni(NO 3 ) 2 ·6H 2 O(0.6mM), Co(NO 3 ) 2 ·6H 2 Add O (0.6mM) into 6mL of water, then add 12mL of 4,4'-biphenyl dicarboxylic acid (1.2mM) and sodium hydroxide (2.4mM) into the aqueous solution under stirring, stir well, and put it into the reaction kettle , treated at 170°C for 12 hours, centrifuged, washed, and dried to obtain a one-dimensional strip-shaped metal-organic framework material.

[0054] The SEM (scanning electron microscope) picture of the above-mentioned one-dimensional strip metal-organic framework material is shown in figure 1 ;Depend on figure 1 It can be seen that it is a nano-ribbon structure, the length is on the micrometer scale, the width and thickness are on the nanometer scale, the aspect ratio is ≥ 10, and there is a certain scale (50-...

Embodiment 3

[0060] A preparation method of a one-dimensional metal oxide / carbide composite material, comprising the steps of:

[0061] a. Preparation of one-dimensional strip metal-organic framework materials:

[0062] Take Ni(NO 3 ) 2 ·6H 2 O(0.3mM), Co(NO 3 ) 2 ·6H 2 Add O (0.9mM) into 6mL of water, then add 12mL of 4,4'-biphenyl dicarboxylic acid (2.4mM) and sodium hydroxide (2.4mM) into the aqueous solution under stirring, stir evenly, and put it into the reaction kettle , treated at 170°C for 8 hours, centrifuged, washed, and dried to obtain a one-dimensional strip-shaped metal-organic framework material.

[0063] b. Preparation of one-dimensional metal oxide / carbide composites:

[0064] Put the one-dimensional strip-shaped metal-organic framework material prepared in step a into a porcelain cup, transfer it into a tube furnace, pass in air, and heat it up to 500°C at a heating rate of 20°C / min for 1 hour and wait for cooling Finally, a one-dimensional metal oxide / carbide com...

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Abstract

Embodiments of the present invention relate to the field of inorganic nano-functional material synthesis, in particular to a one-dimensional metal oxide / carbide composite material and a preparation method thereof. The preparation method of the one-dimensional metal oxide / carbide composite material provided by the present invention includes the following steps: calcining the one-dimensional metal-organic framework material; wherein, the calcination temperature is 200-600°C. In the preparation method provided by the present invention, one-dimensional metal-organic framework material is used as the precursor for the first time, and one-dimensional metal oxide / carbide composite material can be obtained by one-step calcination and pyrolysis; the obtained one-dimensional metal oxide / carbide The composite material still maintains a good one-dimensional morphology, and has a large specific surface area, high dispersibility, more exposed active sites and good electrical conductivity; the preparation method is simple, the energy consumption is low, the raw material cost is low, and it is easy to scale up production.

Description

technical field [0001] The invention relates to the field of synthesis of inorganic nano functional materials, in particular to a one-dimensional metal oxide / carbide composite material and a preparation method thereof. Background technique [0002] Porous carbon materials have very important applications in the fields of electrocatalysis, batteries, capacitors, sensors, and gas adsorption due to their large specific surface area, good adsorption, and electrical conductivity. However, pure carbon materials lack active sites that can be directly used, so they are usually used as carrier materials and need to be combined with other active materials to achieve wider applications. In order to solve this problem, the commonly used method is to introduce active substances, mainly including noble metals, transition metal oxides, etc., and compound them with porous carbon materials by loading methods to improve their catalytic, adsorption and electrochemical activities. However, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/583H01M4/62H01G11/26H01G11/30H01G11/86B01J27/22B01J35/10B01J37/08
CPCB01J27/22B01J35/0033B01J35/1004B01J37/086H01G11/26H01G11/30H01G11/86H01M4/362H01M4/583H01M4/625Y02E60/10
Inventor 张晓伟高鸿毅其他发明人请求不公开姓名
Owner SUZHOU ADVANCED MATERIALS CO LTD
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