Preparation method for synthesizing graphene through biomass burning and application thereof

A combustion synthesis, biomass technology, applied in graphene, chemical instruments and methods, hybrid/electric double layer capacitor manufacturing and other directions, can solve the problems of high cost and complex graphene preparation process, achieve short reaction time, easy to batch Chemical production, process equipment and simple operation effect

Active Publication Date: 2019-02-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, it solves the problems of complex preparation process and high cost of graphene, and exerts important potential applications of graphene in the fields of catalysts, composite materials, and energy storage.

Method used

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  • Preparation method for synthesizing graphene through biomass burning and application thereof
  • Preparation method for synthesizing graphene through biomass burning and application thereof
  • Preparation method for synthesizing graphene through biomass burning and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: The preparation method of biomass combustion synthesis graphene described in the present embodiment is as follows:

[0037] Weigh 1.5 parts of wood chips and 1 part of magnesium powder according to the mass parts and mix them evenly, place the mixed powder in a crucible combustion synthesis device, the combustion synthesis atmosphere is air, and the air pressure is controlled at 1.01Mpa. In the above atmosphere, use resistance wire to heat and ignite The powder mixed with sawdust and magnesium powder, after the combustion product is cooled to room temperature, the combustion product is pickled with 20% hydrochloric acid until the pH value of the pickling solution is less than 5 and remains unchanged, then the product is filtered and washed until the washing solution is medium properties, dried in a vacuum oven at 120°C for 12 hours.

[0038] figure 1 It can be seen that the graphene powder prepared above is observed under a scanning electron microscope, a...

Embodiment 2

[0043] Embodiment 2: The preparation method of biomass combustion synthesis graphene described in the present embodiment is as follows:

[0044] Take 1.35 parts of straw core and 1 part of magnesium powder according to the number of parts by mass and mix them evenly, place the mixed powder in the combustion synthesis device, the combustion synthesis atmosphere is air, and the air pressure is controlled at 1.01Mpa. In the above atmosphere, use resistance wire to heat and ignite the straw The powder mixed with core and magnesium powder, after the combustion product is cooled to room temperature, the combustion product is pickled with 20% hydrochloric acid until the pH value of the pickling solution is less than 5 and remains unchanged, then the product is filtered and washed until the washing solution is neutral properties, dried in a vacuum oven at 120°C for 12 hours.

[0045] figure 1 It can be seen that the graphene powder prepared above is observed under a scanning electron...

Embodiment 3

[0050] Embodiment 3: The preparation method of biomass combustion synthesis graphene described in the present embodiment is as follows:

[0051] Take 1.5 parts of straw skin and 1 part of magnesium powder according to the mass parts and mix them evenly, place the mixed powder in the combustion synthesis device of the combustion synthesis device, the combustion synthesis atmosphere is air, and the air pressure is controlled at 1.01Mpa. Use resistance wire to heat and ignite the powder mixed with lignin and magnesium powder. After the combustion product is cooled to room temperature, pickle the combustion product with 20% hydrochloric acid until the pH value of the pickling solution is less than 5 and remains unchanged. Then filter and wash the product with water. , until the flushing solution is neutral, dry in a vacuum oven at 120°C for 12h.

[0052] figure 1 It can be seen that the graphene powder prepared above is observed under a scanning electron microscope, and the shape...

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Abstract

The invention provides a preparation method for synthesizing graphene through biomass burning and application thereof, and relates to the field of solid waste treatment and the technical field of chemical synthesis. The graphene is prepared from biomass by a combustion synthesis method; the prepared graphene can be applied as a supercapacitor material. Common biomass with low utilization value innature is subjected to resource utilization for preparing the graphene; the production cost for industrially synthesizing the graphene is reduced, so that important potential application is realized in the fields of catalysts, composite materials, electrochemistry and the like. The process is simple; the raw materials are cheap; the equipment requirements and the operation are very simple; the mass production can be easily performed; the reasonable resource utilization method of biomass materials is added.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis; in particular, it relates to a method for preparing graphene synthesized by biomass combustion. Background technique [0002] Biomass refers to various organisms formed through photosynthesis, including various animals and plants, microorganisms and agricultural by-products. my country's annual output of crop by-products is huge, including up to 500 million tons of wheat, rice, and corn stalks. The number of wood chips and sawdust in forestry by-products, and fruit shells and peels in the food industry is also increasing day by day. If these agricultural and forestry by-products and food waste are incinerated and directly buried, it will undoubtedly cause environmental pollution and a great waste of resources. Therefore, with the increasing shortage of fossil energy and the increasing environmental pollution, the rational use of biomass resources has attracted extensive attention fro...

Claims

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Application Information

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IPC IPC(8): C01B32/184H01G11/32H01G11/86
CPCH01G11/32H01G11/86C01B2204/22C01B2204/32Y02E60/13
Inventor 王黎东费维栋苑亦男刘兆远
Owner HARBIN INST OF TECH
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