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A kind of purification method and device of graphene oxide/graphene solution

A graphene solution and purification method technology, which is applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of high comprehensive cost, troublesome operation, and long time consumption, and achieve high-efficiency purification, simple operation, and purification effect Good results

Inactive Publication Date: 2017-03-22
CHANGSHA SAIWEI ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purification of graphene oxide / graphene solution under the action of electrolysis and dialysis will result in long time-consuming, low efficiency, high overall cost and troublesome operation

Method used

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  • A kind of purification method and device of graphene oxide/graphene solution
  • A kind of purification method and device of graphene oxide/graphene solution

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Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 Shown: a purification device for graphene oxide / graphene solution, used to electrolyze and filter unpurified graphene oxide / graphene solution, including a set of negative and positive electrodes and a filter set in the electrolytic cell 4 The row pipe 6 and the cathode and anode electrodes are arranged on both sides of the filter row pipe 6 respectively. The inner cavity of the filter row pipe 6 is a graphene oxide / graphene solution channel, and an auxiliary liquid channel is provided between the filter row pipe 6 and the cathode and anode electrodes.

[0028] The filter row pipe 6 is connected in series with the water pump 1, the valve 2 and the water tank 3 in sequence, and the water pump 1 is used to input the unpurified graphene oxide / graphene solution from one end of the filter row pipe 6 into the lumen passage of the filter row pipe 6, And the purified graphene oxide / graphene solution is extracted from the other end of the filter drain pipe 6 into...

Embodiment 2

[0031] Such as figure 2 Shown: a kind of purification method of graphene oxide / graphene solution, the graphene oxide / graphene solution that concentration is 10mg / mL to be purified is pumped in the channel of three filter row pipes 6 respectively, three filter row tubes 6 is placed between a group of negative and positive electrodes in the electrolytic cell 4, and an aqueous solution channel is provided between the negative and positive electrodes and the filter pipe 6 and between every two adjacent filter pipes 6; the voltage between the negative and positive electrodes is 3.5V Under the action of the electric field between the cathode and anode electrodes, the impurity ions / charged particles in the graphene oxide / graphene solution to be purified carry out electrode migration, and the impurities are filtered out of the filter row 6, taken away by the aqueous solution, and the remaining purified The graphene oxide / graphene solution is pumped into another water tank from the fi...

Embodiment 3

[0034]A method for purifying a graphene oxide / graphene solution. The graphene oxide / graphene solution to be purified with a concentration of 2 mg / mL is pumped into the passages of three filter pipes respectively, and three groups of negative and positive electrodes are arranged in the electrolytic cell. Three groups of cathode and anode electrodes are respectively arranged on both sides of each filter pipe, and there is an aqueous solution channel between the cathode and anode electrodes and the filter pipe; the voltage between each group of cathode and anode electrodes is 10V; under the action of the electric field between the cathode and anode electrodes, the The impurity ions / charged particles in the purified graphene oxide / graphene solution migrate to the electrode, and the charged impurity ions migrate to the oppositely charged electrodes through the filter pipe respectively, and the charged impurity ions gather on the surface of the cathode and anode electrodes to filter t...

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Abstract

The invention discloses a method and a device for purifying an oxidized graphene / graphene solution. The method comprises the following steps: pumping the oxidized graphene / graphene solution to be purified into a channel consisting of at least one filtering and discharging pipe, arranging the at least one filtering and discharging pipe between at least one group of negative and positive electrodes of an electrolytic tank, and forming auxiliary liquid channels between the negative and positive electrodes and the at least one filtering and discharging pipe; performing electrode migration on ions and charged particles in the oxidized graphene / graphene solution to be purified under the action of an electrical field between the negative and positive electrodes, filtering impurities out of the filtering and discharging pipes, taking away the impurities by auxiliary liquid, and pumping the residual purified oxidized graphene / graphene solution into another water tank from the at least one filtering and discharging pipe to form filtering circulation. According to the method and the device, the process is simple, the cost is low, the speed that the impurities are filtered out of the at least one filtering and discharging pipe can be increased, efficient purification of the oxidized graphene / graphene solution is realized, and the method is very suitable for industrial production.

Description

technical field [0001] The invention relates to a method and device for purifying a graphene oxide / graphene solution, in particular to a method and device for purifying a graphene oxide / graphene solution based on the dual effects of electrolysis and filtration. Background technique [0002] Graphene (Graphene) is a two-dimensional carbon atom crystal tightly packed by a single layer of carbon atoms, with a thickness of about 0.335nm, in which the carbon-carbon bond passes through the SP 2 Formed by hybridization, the bond length is about 0.142nm. In the graphene plane, each carbon atom is connected with three adjacent carbon atoms by σ bonds, so that the entire sheet has high structural strength. At the same time, each carbon atom has an unbonded π electron, so π orbitals can be formed in the vertical direction. Due to the existence of π orbitals, electrons can move freely in the graphene crystal, which makes graphene have excellent electron transport properties, and the el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/196C01B32/198
Inventor 谭彬龙笃湘严丽
Owner CHANGSHA SAIWEI ENERGY TECH
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