CN106744910A - A kind of preparation method of graphene oxide - Google Patents
A kind of preparation method of graphene oxide Download PDFInfo
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- CN106744910A CN106744910A CN201710028658.7A CN201710028658A CN106744910A CN 106744910 A CN106744910 A CN 106744910A CN 201710028658 A CN201710028658 A CN 201710028658A CN 106744910 A CN106744910 A CN 106744910A
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- graphene oxide
- graphene
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- hydrogen peroxide
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Abstract
The graphene oxide preparation method that the present invention is provided is added to hydrogen peroxide as leaching liquor in the raw material of graphite powder and Graphene mixture, Graphene is leached out, then processed by separating and filtering again, removal aquadag, graphene oxide solution is thus obtained, finally by the method for vacuum distillation, removal hydrogen peroxide, graphene oxide is finally obtained, whole preparation process speed is fast, efficiency high, due to being added without strong acid during preparation, whole preparation process is environment friendly and pollution-free, and is remained without strong acid, also non-metallic ion residual.
Description
【Technical field】
The invention belongs to carbon material technical field, a kind of preparation method of graphene oxide is specifically related to.
【Background technology】
Graphene is the Two Dimensional Free state atomic crystal of the unique presence having now been found that, is to construct zero dimension fullerene, one-dimensional carbon to receive
The basic structural unit of mitron, three-dimensional graphite.It has the peculiar physics such as conductance high, highly thermally conductive, high rigidity and high intensity, changes
Property is learned, is had broad application prospects in electronics, information, the energy, material and biomedicine field.
But Graphene is due to the characteristics of powerful Van der Waals force has hydrophobicity and easily reunites, limiting it and extensively should
With.The appearance of graphene oxide just solves above mentioned problem, and it is the growth of Graphene, with the big body phase of the structure of Graphene
It is to be connected with a large amount of oxy radicals on the two-dimensional space infinitely basal plane of extension constituted in one layer of carbon atom with, contains in plane
There is-OH and C-O-C, and contain C=O and COOH at its lamella edge.Compared with Graphene, graphene oxide has more excellent
Performance, it not only has good wettability and surface-active, and can be peeled off after small molecule or polyalcohol intercalation,
Improve the combination properties such as calorifics, electricity, the mechanics of material aspect and play very important effect.Moreover, graphene oxide
It is the important channel for preparing Graphene.
At present, in the four big main flow preparation methods for preparing Graphene, graphite oxide reducing process is also considered as system at present
One of best approach of standby Graphene.The method is simple to operate, preparation cost is low, can on a large scale prepare Graphene,
As effective way prepared by Graphene.Other the method has an advantage that, can be just that Mr.'s output equally has extensively
The functionalization graphene of application prospect -- graphene oxide.The method is by using the chemical reagent such as sulfuric acid, nitric acid and Gao Meng
The oxidants such as sour potassium, hydrogen peroxide aoxidize native graphite, the spacing between increase graphite linings, and oxygen is inserted between layers in graphite
Compound, is obtained graphite oxide, is then washed reactant, and carries out low temperature drying to the solid after cleaning, and oxidation is obtained
Graphite composite powder, then graphite oxide powder is peeled off by methods such as physics stripping, high-temperature expansions, graphene oxide is obtained,
Graphene oxide is reduced finally by chemical method, obtains Graphene.This method is simple to operate, and yield is high, but product matter
Amount is relatively low, and the Graphene for preparing easily occurs to reunite and be difficult to disperse, due to there is Van der Waals interaction, with Gao Bibiao
The Graphene of area is intended to form irreversible caking, or even accumulation forms graphite again, a large amount of so as to have impact on Graphene
Production, it is same to limit its and apply.In addition, the reducing agent that the chemistry redox method is used is toxic, to environment
Cause certain pollution.
【The content of the invention】
For above-mentioned technical problem of the prior art, the invention provides a kind of preparation method of graphene oxide, its preparation
Process speed is fast, efficiency high, and preparation process environmental protection, pollution-free, does not have strong acid, metal ion to remain.
In order to solve above-mentioned technical problem, the present invention uses following technical proposals：
A kind of preparation method of graphene oxide, including have the following steps：
S1：Graphite powder and Graphene mixture are taken as raw material；
S2：Above-mentioned raw materials are added in reactor, and add leaching liquor to be extracted in a kettle., obtain suspension；
S3：The suspension that will be obtained in previous step carries out separating and filtering, obtains graphene oxide solution；
S4：The graphene oxide solution that previous step is obtained carries out vacuum distillation treatment, obtains graphene oxide.
In to a kind of above-mentioned improvement project of the preparation method of graphene oxide, described leaching liquor is that hydrogen peroxide is molten
Liquid.
In to a kind of above-mentioned improvement project of the preparation method of graphene oxide, described is separated into centrifugation.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention provide graphene oxide preparation method be by
Hydrogen peroxide is added in the raw material of graphite powder and Graphene mixture as leaching liquor, and Graphene is leached out, Ran Houzai
Processed by separating and filtering, remove aquadag, graphene oxide solution has thus been obtained, finally by the side of vacuum distillation
Method, removes hydrogen peroxide, finally obtains graphene oxide, and whole preparation process speed is fast, efficiency high, due in the process for preparing
Middle to be added without strong acid, whole preparation process is environment friendly and pollution-free, and is remained without strong acid, also non-metallic ion residual.
With reference to specific embodiment, the present invention is described in further detail：
【Specific embodiment】
A kind of preparation method of graphene oxide, including have the following steps：
S1：Graphite powder and Graphene mixture are taken as raw material；
S2：Above-mentioned raw materials are added in reactor, and add hydrogenperoxide steam generator to be soaked as leaching liquor in a kettle.
Carry, the Graphene in raw material is leached into leaching liquor, after the completion of extraction, obtain suspension；
S3：The suspension that will be obtained in previous step carries out separating and filtering, obtains graphene oxide solution, separating treatment be from
The heart is separated；
S4：The graphene oxide solution that previous step is obtained carries out vacuum distillation treatment, obtains graphene oxide.
The graphene oxide preparation method that the present invention is provided is to be added to graphite powder and stone using hydrogen peroxide as leaching liquor
In the raw material of black alkene mixture, Graphene is leached out, is then processed by separating and filtering again, remove aquadag, so
Graphene oxide solution has just been obtained, finally by the method for vacuum distillation, hydrogen peroxide has been removed, graphite oxide has been finally obtained
Alkene, whole preparation process speed is fast, efficiency high, due to being added without strong acid during preparation, whole preparation process environmental protection nothing
Pollution, and remained without strong acid, also non-metallic ion is remained.
It is aobvious for those skilled in the art by the disclosure although the present invention is described in detail with reference to above example
And be clear to, and in the case of the principle of the invention and scope for not departing from described claim restriction, can be right
The present invention makes a variety of changes or changes.Therefore, the detailed description of the embodiment of the present disclosure is only used for explaining, rather than for limiting
The present invention, but it is defined by the subject-matter of the claims the scope of protection.
Claims (3)
1. a kind of preparation method of graphene oxide, it is characterised in that including having the following steps：
S1：Graphite powder and Graphene mixture are taken as raw material；
S2：Above-mentioned raw materials are added in reactor, and add leaching liquor to be extracted in a kettle., obtain suspension；
S3：The suspension that will be obtained in previous step carries out separating and filtering, obtains graphene oxide solution；
S4：The graphene oxide solution that previous step is obtained carries out vacuum distillation treatment, obtains graphene oxide.
2. the preparation method of a kind of graphene oxide according to claim 1, it is characterised in that described leaching liquor was
Hydrogen peroxide solution.
3. the preparation method of a kind of graphene oxide according to claim 1, it is characterised in that described is separated into centrifugation
Separate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710028658.7A CN106744910A (en) | 2017-01-16 | 2017-01-16 | A kind of preparation method of graphene oxide |
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| CN201710028658.7A CN106744910A (en) | 2017-01-16 | 2017-01-16 | A kind of preparation method of graphene oxide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585755A (en) * | 2017-10-23 | 2018-01-16 | 南京旭羽睿材料科技有限公司 | A kind of graphene molecules redox processing method |
| CN107720729A (en) * | 2017-10-13 | 2018-02-23 | 南京旭羽睿材料科技有限公司 | Graphene film, graphene ultracapacitor and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129790A (en) * | 2015-10-10 | 2015-12-09 | 杭州海虹精细化工有限公司 | Novel method for preparing graphene oxide under supercritical water condition |
| CN105293476A (en) * | 2015-11-16 | 2016-02-03 | 复旦大学 | Preparation method of large-size graphene oxide or graphene |
| CN106185902A (en) * | 2016-07-18 | 2016-12-07 | 中国科学院兰州化学物理研究所 | A kind of method that clean oxidation technology prepares the controlled graphene oxide of size |
| CN106219528A (en) * | 2016-07-26 | 2016-12-14 | 湖南师范大学 | A kind of controlled method preparing graphene oxide and graphene oxide quantum dot |
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2017
- 2017-01-16 CN CN201710028658.7A patent/CN106744910A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129790A (en) * | 2015-10-10 | 2015-12-09 | 杭州海虹精细化工有限公司 | Novel method for preparing graphene oxide under supercritical water condition |
| CN105293476A (en) * | 2015-11-16 | 2016-02-03 | 复旦大学 | Preparation method of large-size graphene oxide or graphene |
| CN106185902A (en) * | 2016-07-18 | 2016-12-07 | 中国科学院兰州化学物理研究所 | A kind of method that clean oxidation technology prepares the controlled graphene oxide of size |
| CN106219528A (en) * | 2016-07-26 | 2016-12-14 | 湖南师范大学 | A kind of controlled method preparing graphene oxide and graphene oxide quantum dot |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107720729A (en) * | 2017-10-13 | 2018-02-23 | 南京旭羽睿材料科技有限公司 | Graphene film, graphene ultracapacitor and preparation method thereof |
| CN107585755A (en) * | 2017-10-23 | 2018-01-16 | 南京旭羽睿材料科技有限公司 | A kind of graphene molecules redox processing method |
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Application publication date: 20170531 |