Preparation method of cobalt metal organic frame/macroporous carbon compound

An organic framework, macroporous carbon technology, used in organic compound/hydride/coordination complex catalysts, electrolytic organic production, chemical instruments and methods, etc., to achieve excellent electrocatalytic activity, simple and safe preparation process, and avoid agglomeration. Effect

Inactive Publication Date: 2014-04-09
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, single-phase MOFs have some disadvantages in electrochemical applications, suc

Method used

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  • Preparation method of cobalt metal organic frame/macroporous carbon compound
  • Preparation method of cobalt metal organic frame/macroporous carbon compound
  • Preparation method of cobalt metal organic frame/macroporous carbon compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of Co-MOFs / macroporous carbon composite material of the present invention comprises the following steps:

[0017] Step 1: Add 50 mg of macroporous carbon to 20 mL of deionized water, and sonicate for 10 minutes (the power of the ultrasonic machine is 350 W).

[0018] Step 2: 95.2 mg cobalt chloride, 30 mg 5-(4-pyridyl) tetrazole, 40 mg 1,3-bis(4-pyridyl) propane and 66 mg sodium azide were added to the macroporous carbon In the dispersion, ultrasonic treatment was performed for another 10 minutes to make it fully mixed.

[0019] Step 3: Transfer the mixture dispersion to a hydrothermal reaction kettle, react at 160°C for 72 hours, and then cool to room temperature naturally.

[0020] Step 4: After the obtained product was centrifuged at high speed (8000 rpm), washed three times with deionized water, and then dried in vacuum at 50 °C for 24 hours to obtain the Co-MOFs / macroporous carbon composite material. figure 1 It is the scanning electron mic...

Embodiment 2

[0022] The preparation method of Co-MOFs / macroporous carbon composite material of the present invention comprises the following steps:

[0023] Step 1: Add 20 mg of macroporous carbon into 20 mL of deionized water, and sonicate for 10 minutes (the power of the ultrasonic machine is 350 W).

[0024] Step 2: 95.2 mg cobalt chloride, 30 mg 5-(4-pyridyl) tetrazole, 40 mg 1,3-bis(4-pyridyl) propane and 66 mg sodium azide were added to the macroporous carbon In the dispersion, ultrasonic treatment was performed for another 10 minutes to make it fully mixed.

[0025] Step 3: The mixture dispersion was transferred to a hydrothermal reaction kettle, and after reacting for 72 hours at 140° C., it was naturally cooled to room temperature.

[0026] Step 4: After the obtained product was centrifuged at high speed (8000 rpm), washed three times with deionized water, and then dried in vacuum at 70 °C for 24 hours to obtain the Co-MOFs / macroporous carbon composite material.

Embodiment 3

[0028] The preparation method of Co-MOFs / macroporous carbon composite material of the present invention comprises the following steps:

[0029] Step 1: Add 80 mg of macroporous carbon to 20 mL of deionized water, and sonicate for 10 minutes (the power of the ultrasonic machine is 350 W).

[0030] Step 2: 95.2 mg cobalt chloride, 30 mg 5-(4-pyridyl) tetrazole, 40 mg 1,3-bis(4-pyridyl) propane and 66 mg sodium azide were added to the macroporous carbon In the dispersion, ultrasonic treatment was performed for another 10 minutes to make it fully mixed and uniform.

[0031] Step 3: The mixture dispersion was transferred to a hydrothermal reaction kettle, and after reacting for 70 hours at 150° C., it was naturally cooled to room temperature.

[0032] Step 4: After the obtained product was centrifuged at high speed (8000 rpm), washed three times with deionized water, and then dried in vacuum at 60 °C for 24 hours to obtain the Co-MOFs / macroporous carbon composite material.

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Abstract

The invention belongs to the technical field of nanocomposite materials, and particularly relates to a preparation method of a cobalt metal organic frame/macroporous carbon compound. Co-MOFs and macroporous carbon are firmly combined together to generate a synergistic effect. According to the preparation method, cobalt chloride, 5-(4-pyridyl) tetrazole, 1,3-bi(4-pyridyl)propane, sodium azide and macroporous carbon are taken as raw materials, the raw materials are uniformly mixed through ultrasonic processing, and then the Co-MOFs/macroporous carbon composite material is prepared by utilizing a hydrothermal reaction further. The preparation method is simple and safe in preparation process, and obtained Co-MOFs is uniformly attached with the macroporous carbon together, so that the agglomeration of self-particles is prevented, and heavy accumulation of the macroporous carbon is also effectively prevented. Through the structural advantage, the material has good electrocatalytic activity and extremely good stability, and has potential application values in the electrocatalytic field.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite materials, and in particular relates to a preparation method of a cobalt metal organic framework structure / macroporous carbon nanocomposite material. Background technique [0002] Nanostructured porous materials have been paid attention to by people, and they have a wide range of uses, such as gas adsorbents, catalysts, fuel cells, and capacitor materials. Among a wide variety of porous materials, metal-organic frameworks (MOFs) have attracted increasing attention due to their unique crystal structure, high porosity, large specific surface area, good thermal stability, and chemical inertness. . In recent years, research applications of MOFs include gas adsorption and separation, drug delivery and catalysis. It is worth noting that there are more and more studies on MOFs in the field of electrochemistry. However, single-phase MOFs have some disadvantages in electrochemical applications, su...

Claims

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Application Information

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IPC IPC(8): B01J31/22C22C1/08C25B11/03C25B11/06C25B3/00
Inventor 郭黎平张宇帆薄祥洁
Owner NORTHEAST NORMAL UNIVERSITY
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