CN107655226A - A kind of graphene microballoon for solar absorption agent and preparation method thereof - Google Patents
A kind of graphene microballoon for solar absorption agent and preparation method thereof Download PDFInfo
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- CN107655226A CN107655226A CN201710954380.6A CN201710954380A CN107655226A CN 107655226 A CN107655226 A CN 107655226A CN 201710954380 A CN201710954380 A CN 201710954380A CN 107655226 A CN107655226 A CN 107655226A
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- graphene
- microballoon
- graphene oxide
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- auxiliary agent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Abstract
The invention discloses a kind of graphene microballoon for solar absorption agent and preparation method thereof.This blacker-than-black graphene microballoon is to be obtained with graphene oxide and its compound by atomization drying, electronation setting and high-temperature process.The dry state graphene oxide microballoon light absorbs frequency that the present invention obtains is very wide, and absorptance is high；Preparation method is simple and efficient, energy consumption is low, is adapted to large-scale industrial production.The present invention solves the problems, such as that existing graphene powder absorptivity is not high enough, available for solar absorption agent.
Description
Technical field
The invention belongs to grapheme material field, is related to a kind of graphene microballoon for solar absorption agent and its preparation
Method.
Background technology
Graphene is as a kind of new and material, in fields such as electricity, optics by extensive concern.Especially its is substantial amounts of
Conjugated structure, fabulous flexibility and excellent it may modify ability so that it has good application in terms of solar absorption
Prospect.
Patent 20,101,059,315 7.1《A kind of method for preparing graphene powder》It is heat-treated afterwards Deng utilizing first to be spray-dried
Method obtain graphene powder, elaborate the preparation method of graphene powder.But they are not carried out to graphene powder
Surround and watch and controlled with macrostructure, and then fail to find its huge applications potentiality in terms of solar absorption.ZhouJun
Et.al. the scholar such as (ACS Appl.Mater.Interfaces 2017,9,15052-15057) is to graphene film, aeroge
Studied etc. macroscopic material in terms of solar absorption, but all without reference to fold graphene microballoon in solar absorption
The application of aspect.
Therefore, this patent proposes a kind of concept of fold graphene enhancing solar absorption, and its Successful utilization is existed
On blacker-than-black graphene microballoon, to improve solar absorption efficiency.
The content of the invention
The purpose of the present invention is to be directed to existing technical deficiency, there is provided a kind of graphene microballoon for solar absorption agent
And preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions：A kind of graphene for solar absorption agent is micro-
Ball, the graphene microballoon are formed by size for the single-layer graphene film gauffers of 100nm~100 μm, microsphere diameter be 100nm~
5 μm, density is 0.04~0.1g/cm3, specific surface area is 10~1000m2/ g, carbon-to-oxygen ratio are 6~100.
Further, the graphene micro-spheres have absorption auxiliary agent, and the absorption auxiliary agent is carboxylation carbon pipe, nano carbon black
One or both of.
A kind of preparation method of graphene microballoon for solar absorption agent, comprises the following steps：
(1) atomization drying is carried out for the single-layer graphene oxide dispersion liquid of 100nm~100 μm to size, obtains aoxidizing stone
Black alkene microballoon.In dispersion liquid, the concentration of graphene oxide is 0.1-2mg/mL.
(2) by steam reduction under the reducing agent 90-120 degree such as graphene oxide microballoon hydroiodic acid, time 2-20h.
(3) the graphene oxide microballoon of reduction is heat-treated under inert gas shielding, and temperature is 120-330 degree, dimension
It is 1-24h to hold the time.
Further, the quality of auxiliary agent is absorbed containing auxiliary agent is absorbed in the graphene oxide dispersion described in step (1)
Content is not more than the 10% of graphene oxide quality.
Further, the absorption auxiliary agent is made up of carboxylation carbon pipe, nano carbon black, wherein, the mass content of nano carbon black
No more than 50%.
Further, the atomization drying described in step (1) is spray drying or excusing from death atomization.
The beneficial effects of the present invention are：The present invention regulates and controls graphene ball size/fold rate by regulating and controlling solution concentration, enters
And weaken light reflectivity, increase absorptivity；By regulating and controlling reducing degree, regulate and control graphene light absorbs width, and then regulate and control light
Absorptivity.
Brief description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph of the blacker-than-black graphene microballoon prepared through the embodiment of the present invention 1.
Fig. 2 is the optical photograph of the blacker-than-black graphene microballoon prepared through the embodiment of the present invention 1.
Embodiment
The present invention is specifically described below by embodiment, the present embodiment is served only for doing further the present invention
It is bright, it is impossible to be interpreted as limiting the scope of the invention, those skilled in the art makes one according to the content of foregoing invention
A little nonessential changes and adjustment belong to protection scope of the present invention.
Embodiment 1：
(1) size is spray-dried for the single-layer graphene oxide dispersion liquid of 100nm~1 μm, obtains graphite oxide
Alkene microballoon.In dispersion liquid, the concentration of graphene oxide is 0.1mg/mL.
(2) by the steam reduction under 120 degree of graphene oxide microballoon hydroiodic acid, time 20h.
(3) the graphene oxide microballoon of reduction is heat-treated under inert gas shielding, and temperature is 330 degree, during maintenance
Between be 24h.
By above step, a diameter of 100nm~200 μm for the graphene microballoon being prepared, density 0.1g/cm3,
Specific surface area is 10m2/ g, carbon-to-oxygen ratio 100.Its absorbance reaches 89%.
Embodiment 2：
(1) excusing from death atomization is carried out to the single-layer graphene oxide dispersion liquid that size is 100 μm~1 μm, obtains graphite oxide
Alkene microballoon.In dispersion liquid, the concentration of graphene oxide is 2mg/mL.
(2) by the 90 degree of lower steam reductions of graphene oxide microballoon hydroiodic acid, time 2h.
(3) the graphene oxide microballoon of reduction is heat-treated under inert gas shielding, and temperature is 120 degree, during maintenance
Between be 1h.
By above step, a diameter of 1 μm~5 μm of the graphene microballoon being prepared, density 0.04g/cm3, than
Surface area is 1000m2/ g, carbon-to-oxygen ratio 6.Its absorbance reaches 91%.
Embodiment 3：
A kind of preparation method of blacker-than-black graphene microballoon base solar absorbent, comprises the following steps：
(1) the single-layer graphene oxide piece and carboxylation carbon pipe that size is 300nm~500nm are taken, according to mass ratio 10:1 point
Dissipate in water, graphene oxide concentration is 0.1mg/mL, and graphene oxide microballoon is obtained by the method for atomization drying.
(2) the lower steam reduction of 90 degree of the reducing agent such as graphene oxide microballoon hydroiodic acid, time 20h.
(3) the graphene oxide microballoon of reduction high-temperature process under inert gas shielding, temperature are 1300 degree, are held time
For 24h.
By above step, a diameter of 200nm~800nm for the graphene microballoon being prepared, carboxylation carbon pipe is coated on
In microballoon, averag density 0.06g/cm3, specific surface area 872m2/ g, carbon-to-oxygen ratio 86, optical absorbing agent absorbance are 97%.
Embodiment 4：
A kind of preparation method of blacker-than-black graphene microballoon base solar absorbent, comprises the following steps：
(1) single-layer graphene oxide piece, carboxylation carbon pipe and the nano carbon black that size is 300nm~500nm are taken, according to quality
Than 100:1:1 is dispersed in water, and graphene oxide concentration is 1mg/mL, and it is micro- to obtain graphene oxide by the method for atomization drying
Ball.
(2) the lower steam reduction of 200 degree of the reducing agent such as graphene oxide microballoon hydroiodic acid, time 2h.
(3) the graphene oxide microballoon of reduction high-temperature process under inert gas shielding, temperature are 200 degree, are held time
For 1h.
By above step, a diameter of 0.8 μm~3 μm of the graphene microballoon being prepared, carboxylation carbon pipe and Nano carbon
Black-envelope is overlayed in microballoon, averag density 0.05g/cm3, specific surface area 64m2/ g, carbon-to-oxygen ratio 79, optical absorbing agent absorbance are
95%.
Embodiment 5：
A kind of preparation method of blacker-than-black graphene microballoon base solar absorbent, comprises the following steps：
(1) single-layer graphene oxide piece, carboxylation carbon pipe and the nano carbon black that size is 300nm~500nm are taken, according to quality
Than 1000:1:1 is dispersed in water, and graphene oxide concentration is 1mg/mL, and graphene oxide is obtained by the method for atomization drying
Microballoon.
(2) the lower steam reduction of 120 degree of the reducing agent such as graphene oxide microballoon hydroiodic acid, time 12h.
(3) the graphene oxide microballoon of reduction high-temperature process under inert gas shielding, temperature are 600 degree, are held time
For 8h.
By above step, the optical absorbing agent absorbance for the graphene microballoon being prepared is 95%.
Embodiment 6：
A kind of preparation method (2mg/mL) of blacker-than-black graphene microballoon base solar absorbent, comprises the following steps：
(1) single-layer graphene oxide piece, carboxylation carbon pipe and the nano carbon black that size is 300nm~500nm are taken, according to quality
Than 1000:2:1 is dispersed in water, and graphene oxide concentration is 1mg/mL, and graphene oxide is obtained by the method for atomization drying
Microballoon.
(2) the lower steam reduction of 100 degree of the reducing agent such as graphene oxide microballoon hydroiodic acid, time 1h.
(3) the graphene oxide microballoon of reduction high-temperature process under inert gas shielding, temperature are 300 degree, are held time
For 4h.
By above step, the optical absorbing agent absorbance for the graphene microballoon being prepared is 93%.
Embodiment 7：
A kind of preparation method (0.2mg/mL) of blacker-than-black graphene microballoon base solar absorbent, comprises the following steps：
(1) single-layer graphene oxide piece, carboxylation carbon pipe and the nano carbon black that size is 300nm~500nm are taken, according to quality
Than 100:2:1 is dispersed in water, and graphene oxide concentration is 1mg/mL, and it is micro- to obtain graphene oxide by the method for atomization drying
Ball.
(2) the lower steam reduction of 110 degree of the reducing agent such as graphene oxide microballoon hydroiodic acid, time 2h.
(3) the graphene oxide microballoon of reduction high-temperature process under inert gas shielding, temperature are 800 degree, are held time
For 1h.
By above step, the optical absorbing agent absorbance for the graphene microballoon being prepared is 94%.
Claims (6)
1. a kind of graphene microballoon for solar absorption agent, it is characterised in that the graphene microballoon is 100nm by size
~100 μm of single-layer graphene film gauffer forms, and microsphere diameter is 100nm~5 μm, and density is 0.04~0.1g/cm3, compare table
Area is 10~1000m2/ g, carbon-to-oxygen ratio are 6~100.
2. graphene microballoon according to claim 1, it is characterised in that the graphene micro-spheres have absorption auxiliary agent,
The absorption auxiliary agent is one or both of carboxylation carbon pipe, nano carbon black.
3. the preparation method of a kind of graphene microballoon for solar absorption agent, it is characterised in that comprise the following steps：
(1) atomization drying is carried out for the single-layer graphene oxide dispersion liquid of 100nm~100 μm to size, obtains graphene oxide
Microballoon.In dispersion liquid, the concentration of graphene oxide is 0.1-2mg/mL.
(2) by steam reduction under the reducing agent 90-120 degree such as graphene oxide microballoon hydroiodic acid, time 2-20h.
(3) the graphene oxide microballoon of reduction is heat-treated under inert gas shielding, and temperature is 120-330 degree, during maintenance
Between be 1-24h.
4. according to the method for claim 3, it is characterised in that contain in the graphene oxide dispersion described in step (1)
There is absorption auxiliary agent, the mass content for absorbing auxiliary agent is not more than the 10% of graphene oxide quality.
5. according to the method for claim 4, it is characterised in that the absorption auxiliary agent is made up of carboxylation carbon pipe, nano carbon black,
Wherein, the mass content of nano carbon black is no more than 50%.
6. according to the method for claim 3, it is characterised in that atomization drying described in step (1) for spray drying or
Excusing from death atomization.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052379A (en) * | 2018-09-04 | 2018-12-21 | 山西大学 | A kind of preparation method of blacker-than-black light absorbent |
| CN110902672A (en) * | 2019-12-26 | 2020-03-24 | 北京化工大学 | Photothermal effect multi-stage structure microspherical graphene aerogel and preparation method thereof |
| CN112225202A (en) * | 2020-10-09 | 2021-01-15 | 山东大学 | Preparation method of porous graphene microsphere ultra-black material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013006429A1 (en) * | 2011-06-30 | 2013-01-10 | Northwestern University | Crumpled particles, methods of synthesizing same and applications using same |
| CN104158486A (en) * | 2013-05-13 | 2014-11-19 | 南台科技大学 | Power generation heat absorption device |
| CN105384164A (en) * | 2015-12-18 | 2016-03-09 | 上海理工大学 | Crumpled graphene with characteristics of high specific surface area and graded pore structure, and preparation method thereof |
| CN105540573A (en) * | 2016-01-27 | 2016-05-04 | 浙江碳谷上希材料科技有限公司 | High-solubility multi-fold dry-state graphene oxide microsphere and preparation method thereof |
| KR20160100268A (en) * | 2015-02-13 | 2016-08-23 | 대주전자재료 주식회사 | Graphene having pores made by irregular and random, and Manufacturing method of the same |
| CN106966383A (en) * | 2017-04-28 | 2017-07-21 | 杭州高烯科技有限公司 | A kind of spitball shape graphene microballoon and preparation method thereof |
| CN107055521A (en) * | 2017-03-21 | 2017-08-18 | 禹城贝尔新材料有限公司 | The method and the graphene microballoon of prepare with scale height rule spherical graphite alkene microballoon |
| CN107200992A (en) * | 2017-06-21 | 2017-09-26 | 长兴德烯科技有限公司 | A kind of ABS composite material of graphene toughness reinforcing and preparation method thereof |
-
2017
- 2017-10-13 CN CN201710954380.6A patent/CN107655226A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013006429A1 (en) * | 2011-06-30 | 2013-01-10 | Northwestern University | Crumpled particles, methods of synthesizing same and applications using same |
| CN104158486A (en) * | 2013-05-13 | 2014-11-19 | 南台科技大学 | Power generation heat absorption device |
| KR20160100268A (en) * | 2015-02-13 | 2016-08-23 | 대주전자재료 주식회사 | Graphene having pores made by irregular and random, and Manufacturing method of the same |
| CN105384164A (en) * | 2015-12-18 | 2016-03-09 | 上海理工大学 | Crumpled graphene with characteristics of high specific surface area and graded pore structure, and preparation method thereof |
| CN105540573A (en) * | 2016-01-27 | 2016-05-04 | 浙江碳谷上希材料科技有限公司 | High-solubility multi-fold dry-state graphene oxide microsphere and preparation method thereof |
| CN107055521A (en) * | 2017-03-21 | 2017-08-18 | 禹城贝尔新材料有限公司 | The method and the graphene microballoon of prepare with scale height rule spherical graphite alkene microballoon |
| CN106966383A (en) * | 2017-04-28 | 2017-07-21 | 杭州高烯科技有限公司 | A kind of spitball shape graphene microballoon and preparation method thereof |
| CN107200992A (en) * | 2017-06-21 | 2017-09-26 | 长兴德烯科技有限公司 | A kind of ABS composite material of graphene toughness reinforcing and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 中国化工信息网: "伊利诺伊大学试验证明:石墨烯可提高吸光性进军光电领域", 《功能材料信息》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052379A (en) * | 2018-09-04 | 2018-12-21 | 山西大学 | A kind of preparation method of blacker-than-black light absorbent |
| CN110902672A (en) * | 2019-12-26 | 2020-03-24 | 北京化工大学 | Photothermal effect multi-stage structure microspherical graphene aerogel and preparation method thereof |
| CN112225202A (en) * | 2020-10-09 | 2021-01-15 | 山东大学 | Preparation method of porous graphene microsphere ultra-black material |
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Application publication date: 20180202 |