CN112645315A - Graphene modification method - Google Patents
Graphene modification method Download PDFInfo
- Publication number
- CN112645315A CN112645315A CN202011280103.XA CN202011280103A CN112645315A CN 112645315 A CN112645315 A CN 112645315A CN 202011280103 A CN202011280103 A CN 202011280103A CN 112645315 A CN112645315 A CN 112645315A
- Authority
- CN
- China
- Prior art keywords
- graphene
- nano
- agent
- ultrasonic stirring
- solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 95
- 238000002715 modification method Methods 0.000 title abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 16
- 230000031700 light absorption Effects 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000000151 deposition Methods 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- 238000011282 treatment Methods 0.000 claims abstract description 10
- 230000004888 barrier function Effects 0.000 claims abstract description 8
- 230000003197 catalytic effect Effects 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 238000005286 illumination Methods 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 230000001699 photocatalysis Effects 0.000 claims abstract description 8
- 239000003880 polar aprotic solvent Substances 0.000 claims abstract description 8
- 150000003254 radicals Chemical group 0.000 claims abstract description 8
- 238000012790 confirmation Methods 0.000 claims abstract description 6
- 230000008021 deposition Effects 0.000 claims abstract description 6
- 238000011221 initial treatment Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 230000004927 fusion Effects 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 21
- 238000007127 saponification reaction Methods 0.000 claims description 20
- 239000002904 solvent Substances 0.000 claims description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 15
- 239000011941 photocatalyst Substances 0.000 claims description 15
- 239000012756 surface treatment agent Substances 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 15
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 10
- 125000000524 functional group Chemical group 0.000 claims description 10
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 10
- 239000012948 isocyanate Substances 0.000 claims description 10
- 150000002513 isocyanates Chemical class 0.000 claims description 10
- -1 iron ions Chemical class 0.000 claims description 7
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical compound C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims description 5
- 239000005639 Lauric acid Substances 0.000 claims description 5
- 235000021314 Palmitic acid Nutrition 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 150000001491 aromatic compounds Chemical class 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 150000002505 iron Chemical class 0.000 claims description 5
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 claims description 5
- 125000005471 saturated fatty acid group Chemical group 0.000 claims description 5
- 150000004671 saturated fatty acids Chemical class 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 230000002776 aggregation Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004220 aggregation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 7
- 238000005054 agglomeration Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000012377 drug delivery Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a method for modifying graphene, which belongs to the technical field of manufacturing methods and comprises the following steps: the method comprises the following steps: material confirmation, step two: stirring, step three: primary treatment, step four: secondary treatment, step five: deposition, step six: forming an interface state, and a seventh step: a load; according to the graphene modification method, the graphene is uniformly dispersed in various polar aprotic solvents, the tolerance is improved, the vertical graphene/graphite phase C3N4 compound is deposited on the two sides of the transparent substrate in a matching manner, meanwhile, the vertical graphene can effectively avoid the aggregation of photocatalytic substances, and the efficiency is improved; the nano interface state effect can be formed with the anode and cathode catalytic material layers, the light absorption barrier is effectively reduced, and the processing efficiency can be kept in the weather of insufficient light sources under the multi-photon effect; after the nano-iron quantum dots are loaded, an iron ion participating enhanced free radical chain type reaction is formed under illumination, and the degradation efficiency of organic pollutants is good.
Description
Technical Field
The invention discloses a graphene modification method, and particularly relates to the technical field of manufacturing methods.
Background
Graphene is one kindspCarbon atoms connected in a hybridization manner are closely packed into a new material with a single-layer two-dimensional honeycomb lattice structure. Graphene has excellent optical, electrical and mechanical properties, has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, is considered to be a revolutionary material in the future, and actually exists in the nature, only a single-layer structure is difficult to strip, the graphene is graphite after being laminated one by one, and the graphite with the thickness of 1 mm approximately comprises 300 ten thousand layers of graphene.
Graphene is one of the materials with the highest known strength, has good toughness and can be bent, the theoretical Young modulus of the graphene reaches 1.0TPa, the inherent tensile strength is 130GPa, the graphene has excellent optical, electrical and mechanical properties, and has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, so that the graphene is one of the research hotspots in the scientific field at present.
At present, a single-component graphene material has certain limitations, especially under the unmodified condition, the overall performance is weaker, the light absorption and reaction efficiency are poor, for example, in the weather environment with insufficient visible light such as rainy days and the like, the sufficient treatment efficiency and the degradation efficiency of organic pollutants cannot be maintained, and the application of graphene is greatly limited under the condition that the graphene is not expanded.
Disclosure of Invention
The invention aims to provide a graphene modification method, which aims to solve the problems that the existing single-component graphene material provided in the background art has certain limitations, especially the existing single-component graphene material is weak in overall performance and poor in light absorption and reaction efficiency under the unmodified condition, enough treatment efficiency and degradation efficiency of organic pollutants cannot be maintained in the weather environment with insufficient visible light such as rainy days and the like, and the application of graphene is greatly limited under the condition that the graphene is not expanded.
In order to achieve the purpose, the invention provides the following technical scheme: a graphene modification method comprises the following steps:
the method comprises the following steps: material confirmation: selecting materials, namely graphene, a surface treatment agent, a solvent, a fusion agent and a transparent substrate, storing the materials separately, and ensuring that the surface treatment agent, the solvent and the fusion agent are sealed after being adjusted in advance;
step two: stirring: selecting ultrasonic stirring equipment, placing the graphene at room temperature, adding the solvent into the graphene, fixing two sides of the ultrasonic stirring equipment respectively, and preventing shaking, wherein the ultrasonic stirring time is 15-30 min, the temperature is 55-80 ℃, and the rotating speed is 200-400 r/min, so as to obtain a graphene suspension;
step three: primary treatment: thirdly, arranging a graphene suspension in the ultrasonic stirring equipment, and adding the surface treating agent, wherein the addition amount of the surface treating agent is 25% -30% of that of the graphene suspension, the ultrasonic stirring time is 30-50 min, the temperature is 40-60 ℃, and the rotating speed is 300-500 r/min, so that the once-treated graphene is obtained;
step four: secondary treatment: abundant functional groups on the surface of the once-treated graphene are subjected to fusion reaction with the fusion agent, so that the once-treated graphene can be uniformly dispersed in various polar aprotic solvents, the tolerance is improved, and the stability is kept;
step five: deposition: depositing a vertical graphene/graphite phase C3N4 compound on the transparent substrate on two sides, compounding a multilayer nano-structured photocatalyst material by using a high-loading interface of the vertical graphene to form a high-density graphene-photocatalyst nano-point anode and a high-density graphene-photocatalyst nano-point cathode, wherein the light absorption and reaction efficiency can be improved by double-side loading;
step six: interface state formation: the nano interface state effect formed by the graphene-C3N 4 composite material and the anode and cathode catalytic material layers is utilized to reduce the light absorption barrier and realize the multi-photon effect to form infrared-visible-ultraviolet broad spectrum absorption;
step seven: loading: utilizing the technical principle of photocatalysis fuel cell, loading nano iron quantum dots, and forming an enhanced free radical chain reaction participated by iron ions under the illumination condition
Preferably, the surface treatment agent is a saturated fatty acid saponification liquid, the solvent is a first mixture of water and ethylene glycol, and the fusion agent is a second mixture of isocyanate, an aromatic compound and dicyclohexylcarbodiimide.
Preferably, the first mixture ratio is 2: 3-1: 3, the second mixture ratio is 1.5: 2-1: 2, and the isocyanate and the second mixture ratio is 2: 5-2: 4.
Preferably, the saturated fatty acid saponification liquid is lauric acid saponification liquid or palmitic acid saponification liquid, and the functional groups are carboxyl, hydroxyl and epoxy.
Compared with the prior art, the invention has the beneficial effects that: according to the graphene modification method, the graphene is subjected to two-time treatment before being modified, so that the graphene is uniformly dispersed in various polar aprotic solvents, the tolerance is improved, a vertical graphene/graphite phase C3N4 compound is deposited on two sides of a transparent substrate, and meanwhile, the vertical graphene can effectively avoid the agglomeration of photocatalytic substances, so that the efficiency is improved; the nano interface state effect can be formed with the anode and cathode catalytic material layers, the light absorption barrier is effectively reduced, and the processing efficiency can be kept in the weather of insufficient light sources under the multi-photon effect; after the nano-iron quantum dots are loaded, an iron ion participating enhanced free radical chain type reaction is formed under illumination, and the degradation efficiency of organic pollutants is good.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a graphene modification method comprises the following steps:
the method comprises the following steps: material confirmation: selecting materials, namely graphene, a surface treatment agent, a solvent, a fusion agent and a transparent substrate, storing the materials separately, and ensuring that the surface treatment agent, the solvent and the fusion agent are sealed after being adjusted in advance;
step two: stirring: selecting ultrasonic stirring equipment, placing graphene at room temperature, adding a solvent into the graphene, fixing two sides of the ultrasonic stirring equipment respectively to prevent shaking, wherein the ultrasonic stirring time is 15-30 min, the temperature is 55-80 ℃, and the rotating speed is 200-400 r/min, so as to obtain a graphene suspension;
step three: primary treatment: thirdly, arranging a graphene suspension in the ultrasonic stirring equipment, adding a surface treating agent, wherein the addition amount of the surface treating agent is 25% -30% of that of the graphene suspension, carrying out ultrasonic stirring for 30-50 min at the temperature of 40-60 ℃ and the rotating speed of 300-500 r/min to obtain the primary-treated graphene;
step four: secondary treatment: abundant functional groups on the surface of the once-treated graphene are subjected to fusion reaction with a fusion agent, so that the graphene can be uniformly dispersed in various polar aprotic solvents, the tolerance is improved, and the stability is kept;
step five: deposition: depositing a vertical graphene/graphite phase C3N4 compound on a transparent substrate on two sides, compounding a multilayer nano-structured photocatalyst material by using a high-loading interface of the vertical graphene to form a high-density graphene-photocatalyst nano-point anode and a high-density graphene-photocatalyst nano-point cathode, wherein the light absorption and reaction efficiency can be improved by double-side loading;
step six: interface state formation: the nano interface state effect formed by the graphene-C3N 4 composite material and the anode and cathode catalytic material layers is utilized to reduce the light absorption barrier and realize the multi-photon effect to form infrared-visible-ultraviolet broad spectrum absorption;
step seven: loading: by utilizing the technical principle of a photocatalytic fuel cell, nano iron quantum dots are loaded, and under the condition of illumination, an enhanced free radical chain reaction with participation of iron ions is formed.
The surface treatment agent is saturated fatty acid saponification liquid, the solvent is a first mixture of water and ethylene glycol, the fusion agent is a second mixture of isocyanate, an aromatic compound and dicyclohexylcarbodiimide, the ratio of the first mixture is 2: 3-1: 3, the ratio of the second mixture is 1.5: 2-1: 2, the ratio of the isocyanate to the second mixture is 2: 5-2: 4, the saturated fatty acid saponification liquid is lauric acid saponification liquid or palmitic acid saponification liquid, and the functional groups are carboxyl, hydroxyl and epoxy.
Example 1
A graphene modification method comprises the following steps:
the method comprises the following steps: material confirmation: selecting materials, namely graphene, a surface treatment agent, a solvent, a fusion agent and a transparent substrate, storing the materials separately, and ensuring that the surface treatment agent, the solvent and the fusion agent are sealed after being adjusted in advance;
step two: stirring: selecting ultrasonic stirring equipment, placing graphene at room temperature, adding a solvent into the graphene, fixing two sides of the ultrasonic stirring equipment respectively to prevent shaking, and obtaining a graphene suspension liquid, wherein the ultrasonic stirring time is 15min, the temperature is 55 ℃, and the rotating speed is 200 r/min;
step three: primary treatment: thirdly, arranging the graphene suspension in an ultrasonic stirring device, adding a surface treating agent, wherein the addition amount of the surface treating agent is 25% of that of the graphene suspension, and carrying out ultrasonic stirring for 30min at the temperature of 40 ℃ and at the rotating speed of 300r/min to obtain the primary-treated graphene;
step four: secondary treatment: abundant functional groups on the surface of the once-treated graphene are subjected to fusion reaction with a fusion agent, so that the graphene can be uniformly dispersed in various polar aprotic solvents, the tolerance is improved, and the stability is kept;
step five: deposition: depositing a vertical graphene/graphite phase C3N4 compound on a transparent substrate on two sides, compounding a multilayer nano-structured photocatalyst material by using a high-loading interface of the vertical graphene to form a high-density graphene-photocatalyst nano-point anode and a high-density graphene-photocatalyst nano-point cathode, wherein the light absorption and reaction efficiency can be improved by double-side loading;
step six: interface state formation: the nano interface state effect formed by the graphene-C3N 4 composite material and the anode and cathode catalytic material layers is utilized to reduce the light absorption barrier and realize the multi-photon effect to form infrared-visible-ultraviolet broad spectrum absorption;
step seven: loading: by utilizing the technical principle of a photocatalytic fuel cell, nano iron quantum dots are loaded, and under the condition of illumination, an enhanced free radical chain reaction with participation of iron ions is formed.
The surface treatment agent is saturated fatty acid saponification liquid, the solvent is a first mixture of water and ethylene glycol, the fusion agent is a second mixture of isocyanate, an aromatic compound and dicyclohexylcarbodiimide, the ratio of the first mixture is 2:3, the ratio of the second mixture is 1.5:2, the ratio of the isocyanate to the second mixture is 2:5, the saturated fatty acid saponification liquid is lauric acid saponification liquid or palmitic acid saponification liquid, and the functional groups are carboxyl, hydroxyl and epoxy groups.
Example 2
A graphene modification method comprises the following steps:
the method comprises the following steps: material confirmation: selecting materials, namely graphene, a surface treatment agent, a solvent, a fusion agent and a transparent substrate, storing the materials separately, and ensuring that the surface treatment agent, the solvent and the fusion agent are sealed after being adjusted in advance;
step two: stirring: selecting ultrasonic stirring equipment, placing graphene at room temperature, adding a solvent into the graphene, fixing two sides of the ultrasonic stirring equipment respectively to prevent shaking, wherein the ultrasonic stirring time is 30min, the temperature is 80 ℃, and the rotating speed is 400r/min to obtain a graphene suspension;
step three: primary treatment: thirdly, arranging the graphene suspension in an ultrasonic stirring device, adding a surface treating agent, wherein the addition amount of the surface treating agent is 30% of that of the graphene suspension, and carrying out ultrasonic stirring for 50min at the temperature of 60 ℃ and at the rotating speed of 500r/min to obtain the primary-treated graphene;
step four: secondary treatment: abundant functional groups on the surface of the once-treated graphene are subjected to fusion reaction with a fusion agent, so that the graphene can be uniformly dispersed in various polar aprotic solvents, the tolerance is improved, and the stability is kept;
step five: deposition: depositing a vertical graphene/graphite phase C3N4 compound on a transparent substrate on two sides, compounding a multilayer nano-structured photocatalyst material by using a high-loading interface of the vertical graphene to form a high-density graphene-photocatalyst nano-point anode and a high-density graphene-photocatalyst nano-point cathode, wherein the light absorption and reaction efficiency can be improved by double-side loading;
step six: interface state formation: the nano interface state effect formed by the graphene-C3N 4 composite material and the anode and cathode catalytic material layers is utilized to reduce the light absorption barrier and realize the multi-photon effect to form infrared-visible-ultraviolet broad spectrum absorption;
step seven: loading: by utilizing the technical principle of a photocatalytic fuel cell, nano iron quantum dots are loaded, and under the condition of illumination, an enhanced free radical chain reaction with participation of iron ions is formed.
The surface treatment agent is saturated fatty acid saponification liquid, the solvent is a first mixture of water and ethylene glycol, the fusion agent is a second mixture of isocyanate, an aromatic compound and dicyclohexylcarbodiimide, the ratio of the first mixture is 1:3, the ratio of the second mixture is 1:2, the ratio of the isocyanate to the second mixture is 2:4, the saturated fatty acid saponification liquid is lauric acid saponification liquid or palmitic acid saponification liquid, and the functional groups are carboxyl, hydroxyl and epoxy.
By combining the above, the graphene modification method improves the uniform dispersion of graphene in various polar aprotic solvents and the improvement of tolerance by carrying out two-time treatment before graphene modification, and is matched with a transparent substrate to deposit a vertical graphene/graphite phase C3N4 compound on two sides, and meanwhile, the vertical graphene can effectively avoid the agglomeration of photocatalytic substances and improve the efficiency; the nano interface state effect can be formed with the anode and cathode catalytic material layers, the light absorption barrier is effectively reduced, and the processing efficiency can be kept in the weather of insufficient light sources under the multi-photon effect; after the nano-iron quantum dots are loaded, an iron ion participating enhanced free radical chain type reaction is formed under illumination, and the degradation efficiency of organic pollutants is good.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. A method for modifying graphene is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: material confirmation: selecting materials, namely graphene, a surface treatment agent, a solvent, a fusion agent and a transparent substrate, storing the materials separately, and ensuring that the surface treatment agent, the solvent and the fusion agent are sealed after being adjusted in advance;
step two: stirring: selecting ultrasonic stirring equipment, placing the graphene at room temperature, adding the solvent into the graphene, fixing two sides of the ultrasonic stirring equipment respectively, and preventing shaking, wherein the ultrasonic stirring time is 15-30 min, the temperature is 55-80 ℃, and the rotating speed is 200-400 r/min, so as to obtain a graphene suspension;
step three: primary treatment: thirdly, arranging a graphene suspension in the ultrasonic stirring equipment, and adding the surface treating agent, wherein the addition amount of the surface treating agent is 25% -30% of that of the graphene suspension, the ultrasonic stirring time is 30-50 min, the temperature is 40-60 ℃, and the rotating speed is 300-500 r/min, so that the once-treated graphene is obtained;
step four: secondary treatment: abundant functional groups on the surface of the once-treated graphene are subjected to fusion reaction with the fusion agent, so that the once-treated graphene can be uniformly dispersed in various polar aprotic solvents, the tolerance is improved, and the stability is kept;
step five: deposition: depositing a vertical graphene/graphite phase C3N4 compound on the transparent substrate on two sides, compounding a multilayer nano-structured photocatalyst material by using a high-loading interface of the vertical graphene to form a high-density graphene-photocatalyst nano-point anode and a high-density graphene-photocatalyst nano-point cathode, wherein the light absorption and reaction efficiency can be improved by double-side loading;
step six: interface state formation: the nano interface state effect formed by the graphene-C3N 4 composite material and the anode and cathode catalytic material layers is utilized to reduce the light absorption barrier and realize the multi-photon effect to form infrared-visible-ultraviolet broad spectrum absorption;
step seven: loading: by utilizing the technical principle of a photocatalytic fuel cell, nano iron quantum dots are loaded, and under the condition of illumination, an enhanced free radical chain reaction with participation of iron ions is formed.
2. The method of claim 1, wherein the graphene modification step comprises: the surface treatment agent is saturated fatty acid saponification liquid, the solvent is a first mixture of water and ethylene glycol, and the fusion agent is a second mixture of isocyanate, an aromatic compound and dicyclohexylcarbodiimide.
3. The method of claim 2, wherein: the first mixture ratio is 2: 3-1: 3, the second mixture ratio is 1.5: 2-1: 2, and the isocyanate and the second mixture ratio is 2: 5-2: 4.
4. The method of claim 3, wherein: the saturated fatty acid saponification liquid is lauric acid saponification liquid or palmitic acid saponification liquid, and the functional groups are carboxyl, hydroxyl and epoxy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280103.XA CN112645315A (en) | 2020-11-16 | 2020-11-16 | Graphene modification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011280103.XA CN112645315A (en) | 2020-11-16 | 2020-11-16 | Graphene modification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112645315A true CN112645315A (en) | 2021-04-13 |
Family
ID=75349257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011280103.XA Withdrawn CN112645315A (en) | 2020-11-16 | 2020-11-16 | Graphene modification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112645315A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056985A (en) * | 2015-09-29 | 2015-11-18 | 李若然 | g-C3N4/graphene oxide/nano-iron visible-light response catalytic membrane |
| CN107649165A (en) * | 2017-10-20 | 2018-02-02 | 秦永泽 | Photocatalysis film and preparation method in a kind of foam metal graphene compound substrate |
| CN108395736A (en) * | 2018-03-31 | 2018-08-14 | 广西南宁桂知科技有限公司 | The preparation method of modified graphene |
| CN109351364A (en) * | 2018-10-18 | 2019-02-19 | 南昌航空大学 | A kind of preparation method and applications of graphene/class graphite phase carbon nitride/Pd nano particle multi-level nano-structure composite material |
-
2020
- 2020-11-16 CN CN202011280103.XA patent/CN112645315A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056985A (en) * | 2015-09-29 | 2015-11-18 | 李若然 | g-C3N4/graphene oxide/nano-iron visible-light response catalytic membrane |
| CN107649165A (en) * | 2017-10-20 | 2018-02-02 | 秦永泽 | Photocatalysis film and preparation method in a kind of foam metal graphene compound substrate |
| CN108395736A (en) * | 2018-03-31 | 2018-08-14 | 广西南宁桂知科技有限公司 | The preparation method of modified graphene |
| CN109351364A (en) * | 2018-10-18 | 2019-02-19 | 南昌航空大学 | A kind of preparation method and applications of graphene/class graphite phase carbon nitride/Pd nano particle multi-level nano-structure composite material |
Non-Patent Citations (1)
| Title |
|---|
| 黄国家等: "石墨烯和氧化石墨烯的表面功能化改性", 《化学学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10978719B2 (en) | Platinum/black phosphorus-carbon sphere methanol fuel cell anode catalyst and preparation method thereof | |
| Lei et al. | An overview of bacterial cellulose in flexible electrochemical energy storage | |
| CN106206949A (en) | A kind of flexible perovskite solaode and preparation method thereof | |
| CN111718518B (en) | Preparation method of high-strength high-conductivity titanium carbide composite film | |
| CN114672117B (en) | Polymer hydrogel film with piezoelectric property and preparation and application thereof | |
| CN109569687B (en) | Tin dioxide/nitrogen-doped graphite/cadmium sulfide composite material with core-shell structure and preparation method thereof | |
| CN113285027B (en) | Two-dimensional perovskite thin film material, solar cell and preparation method thereof | |
| CN112185703A (en) | High-breakdown and high-energy-density two-dimensional composite sandwich structure polymer-based dielectric energy storage material and preparation method and application thereof | |
| CN112645315A (en) | Graphene modification method | |
| CN103794377A (en) | Dye-sensitized solar cell (DSSC) photo-anode and manufacturing method and application thereof | |
| Li et al. | Recent advances in the development of perovskite@ metal-organic frameworks composites | |
| CN113401959A (en) | Efficient photo-thermal evaporation material and preparation method thereof | |
| CN109956465B (en) | Preparation method of long-chain conjugated pi-bond crosslinked ultra-tough high-conductivity graphene composite film | |
| AU2021107284A4 (en) | A method of preparing efficient electromagnetic shielding aerogel from waste paper | |
| CN110013824B (en) | Mulching film-shaped two-dimensional nano thin layer sodium titanate covered silver oxide/titanium oxide heterojunction photocatalytic film material and preparation method thereof | |
| CN114805942A (en) | Preparation method of RGO/CNC/CNF composite film | |
| CN110479336B (en) | Bi5O7Br/thin layer Ti3C2Preparation method and application of composite photocatalyst | |
| CN114405530A (en) | Method for preparing composite photocatalyst | |
| CN106984363B (en) | Method for preparing photocatalytic material by layer-by-layer self-assembly | |
| KR101598896B1 (en) | Carbon nanofiber composite and preparation method thereof | |
| Zhou et al. | Kai Yang | |
| CN108654673B (en) | Novel photocatalytic material and preparation method and application thereof | |
| CN105244397A (en) | Anti-haze solar cell and preparation method thereof | |
| CN110911168A (en) | Preparation method of graphene composite material for solar photoanode | |
| CN109174195B (en) | Preparation method of organic-inorganic blend membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210413 |
|
| WW01 | Invention patent application withdrawn after publication |