Composite carbon material for seawater desalination and preparation method of composite carbon material

A technology of composite carbon and activated carbon, which is applied in chemical instruments and methods, carbon compounds, seawater treatment, etc., can solve the problems of unsatisfactory capacitance performance of activated carbon and limit the application of capacitors, etc., and achieve clear pore structure, improved performance, and good ion transmission channels Effect

Inactive Publication Date: 2020-02-18
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, the performance of activated carbon capacitors on the market is not satisfactory, which limits the application in capacitors

Method used

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  • Composite carbon material for seawater desalination and preparation method of composite carbon material
  • Composite carbon material for seawater desalination and preparation method of composite carbon material
  • Composite carbon material for seawater desalination and preparation method of composite carbon material

Examples

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Effect test

Embodiment 1

[0027] Embodiment 1 lotus pod as biomass carbon source

[0028] This embodiment prepares the method for composite carbon material to comprise the steps:

[0029] (1) Remove the lotus seeds from the fresh lotus pods, rinse them with tap water, put them into a 3000ml beaker, soak them in deionized water, ultrasonicate for 30 minutes, put them in a blast drying oven at 70°C for 16 hours, and finally put the dried lotus pods with Grinding into fine powder;

[0030] (2) Weigh 4g lotus powder and add it to a 250ml beaker, then weigh 6mol KOH and pour it into a 250ml beaker with 100ml deionized water, stir and dissolve under ultrasonic to prepare a mixed solution;

[0031] (3) Pour the mixed solution into a 100ml high-pressure reaction kettle, tighten it and put it in a blast drying oven, heat it at 1.5Mpa and 120°C for 2 hours, and pour it into two 50ml centrifuge tubes after cooling down After centrifuging at 8000r / min for three minutes, take the solid and put it in a vacuum dryi...

Embodiment 2

[0052] Embodiment 2 shower bar as biomass carbon source

[0053] The basic steps are the same as those in Example 1, except that the biomass carbon source used is shower stems, the activation temperature is 200°C, and the holding temperature of the tube furnace is 500°C.

Embodiment 3

[0059] Embodiment 3 lotus seed pod as biomass carbon source

[0060] The basic steps are the same as in Example 1, except that the carbon source used is lotus seed pods.

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Abstract

The invention discloses a composite carbon material for seawater desalination and a preparation method of the composite carbon material. The composite carbon material is composed of graphene and activated carbon, wherein the graphene is filled into the surface of the activated carbon. According to the preparation method, the activated carbon and graphene oxide are prepared respectively, and the graphene oxide and the activated carbon are subjected to an ultrasonic reaction and then are subjected to a reduction reaction with glutathione. The composite carbon material is large in specific surface area and clear in pore structure, can provide good ion transmission channels and is simple in preparation process, high in product yield, low in cost, high in resource utilization rate and capable of realizing after-mass production; and meanwhile, the composite carbon material is high in electric capacity, and when the composite carbon material is applied to a deionized capacitor electrode material for seawater desalination, the performance of a deionized capacitor can be improved, and the seawater desalination efficiency is improved.

Description

technical field [0001] The invention belongs to the field of seawater desalination, in particular to a composite carbon material for seawater desalination and a preparation method thereof. Background technique [0002] Statistics show that the water resources on the earth are 1.4×1018m 3 , 71% of the Earth's surface is covered by water. However, 98% of these waters are salt water in oceans, inland seas and underground basins, which are not drinkable. Drinkable fresh water only accounts for about 2% of the global total. With the development of the economy and the progress of the society, people's demand for water is increasing, but the shortage of water resources, uneven distribution of time and space, excessive exploitation, unrestrained waste and pollution make fresh water resources become a worldwide issue. Many countries have also begun to look for new water sources. Activated carbon has a high specific surface area, good electrical conductivity, and high electric adso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/312C01B32/318C01B32/348B01J20/20C02F1/469C02F103/08
CPCB01J20/20C02F1/469C02F2103/08C01B32/312C01B32/318C01B32/348
Inventor 丹媛媛刘刚于化龙顾雷香
Owner JIANGSU UNIV OF SCI & TECH
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