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A kind of preparation method of manganese dioxide/carbon composite nanotube

A manganese dioxide and carbon composite technology, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve the problems of no application, etc., and achieve the effect of simple and easy method and large specific surface area

Active Publication Date: 2019-05-14
湘潭电化科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has not been applied to the preparation of manganese dioxide / carbon composite nanotubes as a substrate

Method used

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  • A kind of preparation method of manganese dioxide/carbon composite nanotube
  • A kind of preparation method of manganese dioxide/carbon composite nanotube
  • A kind of preparation method of manganese dioxide/carbon composite nanotube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 MnO 2 / Preparation of CNTs:

[0046] 1. Electrospinning:

[0047] A solution of polyacrylonitrile (PAN) in dimethylformamide (DMF) with a concentration of 9 wt% was prepared, and then electrospinning was performed. Constant current syringe pump push speed 1mL / h, voltage 15kV, receiving distance 15cm, humidity 32%. After the electrospinning was completed, the PAN nanofiber membrane was peeled off from the aluminum foil on the receiving plate.

[0048] 2. Preoxidation:

[0049]Take a certain quality of PAN nanofiber membrane, place it in a muffle furnace and heat it in an air environment. The heating program is: from room temperature to 180°C at 2°C / min, and then to 260°C at 1°C / min , and maintained at 260° C. for 60 min, and finally cooled down to room temperature naturally to obtain pre-oxidized nanofibers.

[0050] 3. Carbonization:

[0051] Place the pre-oxidized nanofibers obtained in the previous step in a tube furnace under N 2 environment (N 2 T...

Embodiment 2

[0056] Example 2 MnO 2 / Preparation of CNTs:

[0057] 1. Electrospinning:

[0058] A solution of polyacrylonitrile (PAN) in dimethylformamide (DMF) with a concentration of 9 wt% was prepared, and then electrospinning was performed. Constant current syringe pump push speed 1mL / h, voltage 15kV, receiving distance 15cm, humidity 40%. After the electrospinning was completed, the PAN nanofiber membrane was peeled off from the aluminum foil on the receiving plate.

[0059] 2. Preoxidation:

[0060] Take a certain quality of PAN nanofiber membrane, place it in a muffle furnace and heat it in an air environment. The heating program is: from room temperature to 180°C at 2°C / min, and then to 260°C at 1°C / min , and maintained at 260° C. for 60 min, and finally cooled down to room temperature naturally to obtain pre-oxidized nanofibers.

[0061] 3. Carbonization:

[0062] Place the pre-oxidized nanofibers obtained in the previous step in a tube furnace under N 2 environment (N 2 ...

Embodiment 3

[0070] Example 3 MnO 2 / Preparation of CNTs:

[0071] 1. Electrospinning:

[0072] A solution of polyacrylonitrile (PAN) in dimethylformamide (DMF) with a concentration of 9 wt% was prepared, and then electrospinning was performed. Constant current syringe pump push speed 1mL / h, voltage 15kV, receiving distance 15cm, humidity 35%. After the electrospinning was completed, the PAN nanofiber membrane was peeled off from the aluminum foil on the receiving plate.

[0073] 2. Preoxidation:

[0074] Take a certain quality of PAN nanofiber membrane, place it in a muffle furnace and heat it in an air environment. The heating program is: from room temperature to 180°C at 2°C / min, and then to 260°C at 1°C / min , and maintained at 260° C. for 60 min, and finally cooled down to room temperature naturally to obtain pre-oxidized nanofibers.

[0075] 3. Carbonization:

[0076] The pre-oxidized nanofibers obtained in the previous step were placed in a tube furnace and heated in an Ar env...

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Abstract

The invention relates to a method for preparing manganese dioxide / carbon composite nanotube, and belongs to the field of new energy materials. The carbon nanofibers obtained by electrospinning are soaked in a solution of potassium permanganate, and after the high temperature annealing, the manganese dioxide / carbon composite nanotube is obtained. The soaking time is the key factor for controlling the load capacity of manganese dioxide and has a great influence on the morphology of composite nanotubes. Manganese dioxide / carbon composite nanotube has a good effect on the removal of lead ions in waste water, the maximum adsorption capacity can reach up to 283 mg / g, and the composite nanotube has potential application prospect in the area of wastewater treatment and super capacitors.

Description

technical field [0001] The invention relates to a preparation method of a manganese dioxide / carbon composite nanotube, belonging to the field of new energy materials. Background technique [0002] Manganese dioxide nanomaterials have the advantages of unique structure, low price, abundant sources, and environmental friendliness, and are widely used in adsorption, catalysis, and supercapacitors. The manganese dioxide / carbon composite material with carbon as the matrix or support not only increases the specific surface area of ​​the material, but also has good electrical conductivity, which improves the overall performance of the material. Commonly used carbon matrix materials include carbon nanotubes, graphene, activated carbon, macropores with regular pore structure, mesoporous carbon, etc., but these materials are expensive. The deposition composite method of manganese dioxide on the carbon substrate includes chemical vapor deposition, electrochemical deposition, aqueous p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/20
CPCB01J20/06B01J20/20C02F1/281C02F2101/20
Inventor 杨彦成杨健茂
Owner 湘潭电化科技股份有限公司
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