CN102192936A - Glassy carbon electrode modified by reduction-state graphene, and preparation and application of glassy carbon electrode - Google Patents
Glassy carbon electrode modified by reduction-state graphene, and preparation and application of glassy carbon electrode Download PDFInfo
- Publication number
- CN102192936A CN102192936A CN2011100437024A CN201110043702A CN102192936A CN 102192936 A CN102192936 A CN 102192936A CN 2011100437024 A CN2011100437024 A CN 2011100437024A CN 201110043702 A CN201110043702 A CN 201110043702A CN 102192936 A CN102192936 A CN 102192936A
- Authority
- CN
- China
- Prior art keywords
- carbon electrode
- ortho states
- water
- glassy carbon
- states graphene
- 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.)
- Pending
Links
Images
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The invention belongs to the technical field of electrochemical analysis and detection, and in particular relates to a glassy carbon electrode modified by reduction-state graphene, and preparation and application of the glassy carbon electrode. In an electrochemical sensor, the glassy carbon electrode serves as a carrier, and the graphene of which the carrier load is 7 to 113 micrograms per cm<2> serves as a recognition element. The method can be directly used for quick electrochemical test of kojic acid and has the advantages of sensitivity, accuracy and the like.
Description
Technical field
The invention belongs to electrochemical analysis detection technique field, particularly a kind ofly go back ortho states Graphene modified glassy carbon electrode and preparation and application.
Background technology
The chemical name of kojic acid is 5-hydroxyl-2-methylol-pyrokomane.At occurring in nature, kojic acid is present in the fermented foods such as Mi Qu, soy sauce, drinks.Kojic acid can be used as antiseptic, antistaling agent, color stabilizer in food; Kojic acid has the function that suppresses the melanin generation, has remarkable whitening effect, now has been applied in skin-lightening cosmetic, has bathed in day chemical industries such as agent and toothpaste.The assay method of kojic acid mainly contains spectrophotometric method, high performance liquid chromatography etc.Yet, often relate to complicated and time-consuming sample pretreatment process for complex sample, in extraction, also to use a large amount of organic solvents, cause environmental pollution.Since electrochemical methods have cheap, highly sensitive, speed fast, be convenient to advantage such as operation, and extensively accepted by people.Therefore developing mensuration for kojic acid, to have highly sensitive galvanochemistry modified electrode be the target that people pursue always.
The galvanochemistry modified electrode can effectively reduce the redox overpotential of some material, thereby reaches the purpose that improves detection sensitivity, reduces interference.Graphene is a kind of new carbon that development in recent years is got up, and is the novel carbon nanomaterial by the tightly packed one-tenth bi-dimensional cellular of monolayer carbon atom shape crystalline network, is the elementary cell that makes up other dimension carbonaceous material.Compare with the graphite particulate precursor, have higher specific surface area.Compare with other carbon nanomaterials (as carbon nano-tube), have more reaction site and defective.Therefore, Graphene has higher electrochemical activity.In addition, Graphene with low cost has more wide prospect in application facet than carbon nano-tube.These outstanding character make Graphene be expected to be prepared into novel modified electrode, in the widespread use of electroanalysis detection range.
Summary of the invention
The object of the invention is to provide a kind of go back ortho states Graphene modified glassy carbon electrode and preparation and application.
For achieving the above object, the technical solution used in the present invention is:
A kind of ortho states Graphene modified glassy carbon electrode of going back: electrochemical sensor is carrier with the glass-carbon electrode, carrier loaded 7-113 μ g/cm
2Graphene as recognition component.
The preparation process of described Graphene is:
1) with 0.5-2g native graphite, 0.5-2g NaNO
3Mix with the 40-60mL concentrated sulphuric acid, stir 3-5h, add 5-7g KMnO more slowly at 0 ℃ of condition of ice bath lower magnetic force
4After remove ice bath, about under field conditions (factors) 30-40 ℃ is stirred 1-3h, adds 80-100mL water slowly and stir 10-20min under 90-100 ℃ of water-bath, adds 200-300mL warm water and 10-30mL H again
2O
2, then, promptly get graphite oxide at 40-60 ℃ of dry 24-48h with liquid HCl and water centrifuge washing;
2) taking by weighing graphite oxide 0.05-0.2g is dispersed in the 50-200mL water, the ultrasonic graphite oxide of peeling off is faint yellow colloid, adds 1-4mL hydrazine hydrate (80%) again, boiling reflux 16-30h generates black precipitate under 100 ℃ of water-baths, and the vacuum filtration drying must be gone back ortho states Graphene powder;
3) the ortho states Graphene of going back with step 2 preparation joins in the Milli-Q water, and making and going back ortho states Graphene content is 0.5-2g/L, and sonic oscillation 20-40 minute, what obtain that black disperses homogeneous went back ortho states Graphene suspension.Described concentrated sulphuric acid concentration is 98%.
The also preparation of ortho states Graphene modified glassy carbon electrode:
A. with glass-carbon electrode Al
2O
3Burnishing powder, then ultrasonic cleaning is handled in Milli-Q water;
B. with 0.5-2g native graphite, 0.5-2g NaNO
3Mix with the 40-60mL concentrated sulphuric acid, stir 3-5h, add 5-7g KMnO more slowly at 0 ℃ of condition of ice bath lower magnetic force
4After remove ice bath, about under field conditions (factors) 30-40 ℃ is stirred 1-3h, adds 80-100mL water slowly and stir 10-20min under 90-100 ℃ of water-bath, adds 200-300mL warm water and 10-30mL H again
2O
2, then, promptly get graphite oxide at 40-60 ℃ of dry 24-48h with liquid HCl and water centrifuge washing;
C. taking by weighing graphite oxide 0.05-0.2g is dispersed in the 50-200mL water, the ultrasonic graphite oxide of peeling off is faint yellow colloid, adds 1-4mL hydrazine hydrate (80%) again, boiling reflux 16-30h generates black precipitate under 100 ℃ of water-baths, and the vacuum filtration drying must be gone back ortho states Graphene powder;
D. the ortho states Graphene of going back with step c preparation joins in the Milli-Q water, and making and going back ortho states Graphene content is 0.5-2g/L, and sonic oscillation 20-40 minute, what obtain that black disperses homogeneous went back ortho states Graphene suspension;
E. ortho states Graphene modified glassy carbon electrode is gone back in preparation: the suspension 1-4 μ L that will adopt step c to be prepared drips to be coated onto and adopts the handled glass-carbon electrode of step a surface, at room temperature dry, make solvent evaporates, promptly obtaining with the glass-carbon electrode is carrier, carrier loaded 7-113 μ g/cm
2Graphene go back ortho states Graphene modified glassy carbon electrode as recognition component.
Described concentrated sulphuric acid concentration is 98%.Describedly glass-carbon electrode is used 1 μ m successively, 0.3 μ m, the Al of 0.05 μ m
2O
3Burnishing powder polishes on polishing cloth, and after each polishing, all ultrasonic cleaning is handled in Milli-Q water.
The also application of ortho states Graphene modified glassy carbon electrode: adopt the described ortho states Graphene modified glassy carbon electrode of going back to measure kojic acid.
As working electrode, contrast electrode is the SCE electrode with the above-mentioned ortho states Graphene modified glassy carbon electrode of going back, and auxiliary electrode is a platinum filament, forms three-electrode system; This three-electrode system is placed the acetic acid/sodium acetate buffer solution that contains kojic acid, and current potential carries out linear sweep voltammetry afterwards from 0.3V to 1.1V cyclic voltammetry scan, and current potential is from 0.3V to 1.1V, and record I-E curve.The advantage that the present invention had:
Method of going back ortho states Graphene modified glassy carbon electrode mensuration kojic acid provided by the invention, with water is spreading agent, the ortho states Graphene of going back of stable in properties is distributed in the aqueous solution, be coated onto glass-carbon electrode surface preparation chemically modified electrode with this dispersant liquid drop, in acetate buffer solution, has high sensitivity with linear sweep voltammetry for the mensuration of kojic acid.
Ortho states Graphene specific surface area is big, many, the good electrical conductivity in surfactivity site for utilization of the present invention is gone back for it, and kojic acid oxidation overpotential is reduced, and oxidation peak current increases.Making the range of linearity of modified electrode pair and kojic acid response is 0.01-0.14mM, sensitivity 42.9 μ A/mM.Compare with the modified electrode of identical function, novel modified glassy carbon electrode its preparation method of the present invention is simple, quick, easy to operate, modifies mild condition.Method of testing of the present invention has good stable and reappearance.
Description of drawings
The kojic acid that Fig. 1 provides for the embodiment of the invention (200 μ M) is at blank glass-carbon electrode (a) and go back cyclic voltammetry curve on the ortho states Graphene modified glassy carbon electrode (b) (sweep velocity 0.1V/s wherein.Horizontal ordinate-current potential E (unit: volt, V); Ordinate-electric current I (unit: microampere, μ A)).
Fig. 2 (wherein adopts the concentration of kojic acid to be followed successively by to o by a: 0,10,20,30,40,50,60,70,80,90,100,110,120,130 and 140 μ M for the kojic acid of the variable concentrations that the embodiment of the invention provides at the linear sweep voltammogram of going back on the ortho states Graphene modified glassy carbon electrode.Horizontal ordinate-current potential E (unit: volt, V); Ordinate-electric current I (unit: microampere, μ A)).
Embodiment
A. at first glass-carbon electrode is used successively 1 μ m, 0.3 μ m, 0.05 μ m Al
2O
3Burnishing powder polishes on polishing cloth, and after each polishing, all ultrasonic cleaning is handled in Milli-Q water;
B. the ortho states Graphene is gone back in preparation: with 1g native graphite, 1g NaNO
3The 250mL beaker is put in mixing with the 50mL concentrated sulphuric acid, stirs 4h at 0 ℃ of condition of ice bath lower magnetic force, adds 6g KMnO more slowly
4After remove ice bath, about under field conditions (factors) 35 ℃ are stirred 2h, add 90mL water slowly and stir 15min under 98 ℃ of water-baths, add 200mL warm water and 20mL H again
2O
2, liquid is transferred to centrifuge tube earlier with HCl and water centrifuge washing, promptly get graphite oxide at 50 ℃ of dry 48h.Taking by weighing graphite oxide 0.1g is dispersed in and is placed with in the 100mL water beaker, the ultrasonic graphite oxide of peeling off, be faint yellow colloid, move into the 250mL there-necked flask again, add 2mL hydrazine hydrate (80%), boiling reflux 24h generates black precipitate under 100 ℃ of water-baths, and the vacuum filtration drying must be gone back ortho states Graphene powder.
C. the ortho states Graphene of going back with step b preparation joins in the Milli-Q water, and making and going back ortho states Graphene content is 2g/L, sonic oscillation 20 minutes, and what obtain that black disperses homogeneous goes back ortho states Graphene suspension;
D. ortho states Graphene modified glassy carbon electrode is gone back in preparation: will adopt suspension that step c prepared to pipette 2 μ L with micro syringe and drip and be coated onto the handled glass-carbon electrode of employing step a surface, at room temperature dry, make solvent evaporates prepare also ortho states Graphene modified glassy carbon electrode of gained.
The electrochemical gaging that ortho states Graphene modified glassy carbon electrode is used for kojic acid is gone back in above-mentioned preparation, and its assay method is as follows: will go back ortho states Graphene modified glassy carbon electrode as working electrode, contrast electrode is the SCE electrode, and auxiliary electrode is a platinum filament, forms three-electrode system; This three-electrode system is placed the acetic acid/sodium acetate buffer solution (the pH value is 6.0) that contains 200 μ M kojic acids, and current potential the results are shown in Figure curve b in 1 from 0.3V to 1.1V cyclic voltammetry scan.Curve a is the cyclic voltammetry curve of blank glass-carbon electrode in containing the acetic acid of same concentration kojic acid/sodium acetate buffer solution (the pH value is 6.0) among Fig. 1.By more as can be known, the ortho states Graphene modified glassy carbon electrode of going back provided by the invention has obvious electric catalyticing effect to the electrochemical oxidation of kojic acid, and oxidation peak current increases, and spike potential is negative to be moved.Afterwards this three-electrode system is placed the acetic acid/sodium acetate buffer solution (the pH value is 6.0) that contains variable concentrations (0,10,20,30,40,50,60,70,80,90,100,110,120,130 and 140 μ M) kojic acid, current potential is from the linear volt-ampere scanning of 0.3V to 1.1V, and record I-E curve (Fig. 2).As seen from Figure 2, in 0.01～0.14mM concentration range, oxidation peak current and kojic acid concentration have the good linear relation, and measurement sensitivity is 42.9 μ A/mM.
A. at first glass-carbon electrode is used successively 1 μ m, 0.3 μ m, 0.05 μ m Al
2O
3Burnishing powder polishes on polishing cloth, and after each polishing, all ultrasonic cleaning is handled in Milli-Q water;
B. the ortho states Graphene is gone back in preparation: with 0.5g native graphite, 0.5g NaNO
3Put into the 250mL beaker with the 40mL concentrated sulphuric acid, stir 3h, add 5g KMnO more slowly at 0 ℃ of condition of ice bath lower magnetic force
4After remove ice bath, about under field conditions (factors) 30 ℃ are stirred 1h, add 80mL water slowly and stir 10min under 90 ℃ of water-baths, add 250mL warm water and 10mL H again
2O
2, liquid is transferred to centrifuge tube earlier with HCl and water centrifuge washing, promptly get graphite oxide at 40 ℃ of dry 24h.Taking by weighing graphite oxide 0.05g is dispersed in and is placed with in the 50mL water beaker, the ultrasonic graphite oxide of peeling off, be faint yellow colloid, move into the 250mL there-necked flask again, add 1mL hydrazine hydrate (80%), boiling reflux 16h generates black precipitate under 100 ℃ of water-baths, and the vacuum filtration drying must be gone back ortho states Graphene powder.
C. the ortho states Graphene of going back with step b preparation joins in the Milli-Q water, and making and going back ortho states Graphene content is 0.5g/L, sonic oscillation 30 minutes, and what obtain that black disperses homogeneous goes back ortho states Graphene suspension;
D. ortho states Graphene modified glassy carbon electrode is gone back in preparation: will adopt suspension that step c prepared to pipette 4 μ L with micro syringe and drip and be coated onto the handled glass-carbon electrode of employing step a surface, at room temperature dry, make solvent evaporates prepare also ortho states Graphene modified glassy carbon electrode of gained.
The electrochemical gaging that ortho states Graphene modified glassy carbon electrode is used for kojic acid is gone back in above-mentioned preparation, and its assay method is as follows: will go back ortho states Graphene modified glassy carbon electrode as working electrode, contrast electrode is the SCE electrode, and auxiliary electrode is a platinum filament, forms three-electrode system; This three-electrode system is placed the acetic acid/sodium acetate buffer solution (the pH value is 5.0) that contains variable concentrations (0,10,20,30,40,50,60,70,80,90,100,110,120,130 and 140 μ M) kojic acid, carry out linear sweep voltammetry, current potential is from 0.3V to 1.1V, and record I-E curve.In 0.02～0.14mM concentration range, oxidation peak current and kojic acid concentration have the good linear relation, and measurement sensitivity is 30.8 μ A/mM.
A. at first glass-carbon electrode is used successively 1 μ m, 0.3 μ m, 0.05 μ m Al
2O
3Burnishing powder polishes on polishing cloth, and after each polishing, all ultrasonic cleaning is handled in Milli-Q water;
B. the ortho states Graphene is gone back in preparation: with 2g native graphite, 2g NaNO
3Put into the 250mL beaker with the 60mL concentrated sulphuric acid, stir 5h, add 7g KMnO more slowly at 0 ℃ of condition of ice bath lower magnetic force
4After remove ice bath, about under field conditions (factors) 40 ℃ are stirred 3h, add 100mL water slowly and stir 20min under 100 ℃ of water-baths, add 300mL warm water and 30mL H again
2O
2, liquid is transferred to centrifuge tube earlier with HCl and water centrifuge washing, promptly get graphite oxide at 60 ℃ of dry 36h.Taking by weighing graphite oxide 0.2g is dispersed in and is placed with in the 200mL water beaker, the ultrasonic graphite oxide of peeling off, be faint yellow colloid, move into the 250mL there-necked flask again, add 4mL hydrazine hydrate (80%), boiling reflux 30h generates black precipitate under 100 ℃ of water-baths, and the vacuum filtration drying must be gone back ortho states Graphene powder.
C. the ortho states Graphene of going back with step b preparation joins in the Milli-Q water, and making and going back ortho states Graphene content is 1g/L, sonic oscillation 40 minutes, and what obtain that black disperses homogeneous goes back ortho states Graphene suspension;
D. ortho states Graphene modified glassy carbon electrode is gone back in preparation: will adopt suspension that step c prepared to pipette 1 μ L with micro syringe and drip and be coated onto the handled glass-carbon electrode of employing step a surface, at room temperature dry, make solvent evaporates prepare also ortho states Graphene modified glassy carbon electrode of gained.
The electrochemical gaging that ortho states Graphene modified glassy carbon electrode is used for kojic acid is gone back in above-mentioned preparation, and its assay method is as follows: will go back ortho states Graphene modified glassy carbon electrode as working electrode, contrast electrode is the SCE electrode, and auxiliary electrode is a platinum filament, forms three-electrode system; This three-electrode system is placed the acetic acid/sodium acetate buffer solution (the pH value is 7.0) that contains variable concentrations (0,10,20,30,40,50,60,70,80,90,100,110,120,130 and 140 μ M) kojic acid, carry out linear sweep voltammetry, current potential is from 0.3V to 1.1V, and record I-E curve.In 0.03～0.13mM concentration range, oxidation peak current and kojic acid concentration have the good linear relation, and measurement sensitivity is 21.4 μ A/mM.
Claims (9)
1. go back ortho states Graphene modified glassy carbon electrode for one kind, it is characterized in that: electrochemical sensor is carrier with the glass-carbon electrode, carrier loaded 7-113 μ gm
2Graphene as recognition component.
2. by the described ortho states Graphene modified glassy carbon electrode of going back of claim 1, it is characterized in that: the preparation process of described Graphene is:
1) with 0.5-2g native graphite, 0.5-2g NaNO
3Mix with the 40-60mL concentrated sulphuric acid, stir 3-5h, add 5-7g KMnO more slowly at 0 ℃ of condition of ice bath lower magnetic force
4After remove ice bath, about under field conditions (factors) 30-40 ℃ is stirred 1-3h, adds 80-100mL water slowly and stir 10-20min under 90-100 ℃ of water-bath, adds 200-300mL warm water and 10-30mL H again
2O
2, then, promptly get graphite oxide at 40-60 ℃ of dry 24-48h with liquid HCl and water centrifuge washing;
2) taking by weighing graphite oxide 0.05-0.2g is dispersed in the 50-200mL water, the ultrasonic graphite oxide of peeling off is faint yellow colloid, adds 1-4mL hydrazine hydrate (80%) again, boiling reflux 16-30h generates black precipitate under 100 ℃ of water-baths, and the vacuum filtration drying must be gone back ortho states Graphene powder;
3) the ortho states Graphene of going back with step 2 preparation joins in the Milli-Q water, and making and going back ortho states Graphene content is 0.5-2g/L, and sonic oscillation 20-40 minute, what obtain that black disperses homogeneous went back ortho states Graphene suspension.
3. by the described ortho states Graphene modified glassy carbon electrode of going back of claim 1, it is characterized in that: described concentrated sulphuric acid concentration is 98%.
4. described preparation of going back ortho states Graphene modified glassy carbon electrode of claim 1 is characterized in that:
A. with glass-carbon electrode Al
2O
3Burnishing powder, then ultrasonic cleaning is handled in Milli-Q water;
B. with 0.5-2g native graphite, 0.5-2g NaNO
3Mix with the 40-60mL concentrated sulphuric acid, stir 3-5h, add 5-7g KMnO more slowly at 0 ℃ of condition of ice bath lower magnetic force
4After remove ice bath, about under field conditions (factors) 30-40 ℃ is stirred 1-3h, adds 80-100mL water slowly and stir 10-20min under 90-100 ℃ of water-bath, adds 200-300mL warm water and 10-30mL H again
2O
2, then, promptly get graphite oxide at 40-60 ℃ of dry 24-48h with liquid HCl and water centrifuge washing;
C. taking by weighing graphite oxide 0.05-0.2g is dispersed in the 50-200mL water, the ultrasonic graphite oxide of peeling off is faint yellow colloid, adds 1-4mL hydrazine hydrate (80%) again, boiling reflux 16-30h generates black precipitate under 100 ℃ of water-baths, and the vacuum filtration drying must be gone back ortho states Graphene powder;
D. the ortho states Graphene of going back with step c preparation joins in the Milli-Q water, and making and going back ortho states Graphene content is 0.5-2g/L, and sonic oscillation 20-40 minute, what obtain that black disperses homogeneous went back ortho states Graphene suspension;
E. ortho states Graphene modified glassy carbon electrode is gone back in preparation: the suspension 1-4 μ L that will adopt step c to be prepared drips to be coated onto and adopts the handled glass-carbon electrode of step a surface, at room temperature dry, make solvent evaporates, promptly obtaining with the glass-carbon electrode is carrier, carrier loaded 7-113 μ g/cm
2Graphene go back ortho states Graphene modified glassy carbon electrode as recognition component.
5. by the described preparation of going back ortho states Graphene modified glassy carbon electrode of claim 4, it is characterized in that: described concentrated sulphuric acid concentration is 98%.
6. by the described preparation of going back ortho states Graphene modified glassy carbon electrode of claim 3, it is characterized in that: describedly glass-carbon electrode is used 1 μ m successively, 0.3 μ m, the Al of 0.05 μ m
2O
3Burnishing powder polishes on polishing cloth, and after each polishing, all ultrasonic cleaning is handled in Milli-Q water.
7. described application of going back ortho states Graphene modified glassy carbon electrode of claim 1 is characterized in that: adopt the described ortho states Graphene modified glassy carbon electrode of going back to measure kojic acid.
8. by the described application of going back ortho states Graphene modified glassy carbon electrode of claim 7, it is characterized in that: as working electrode, contrast electrode is the SCE electrode with the above-mentioned ortho states Graphene modified glassy carbon electrode of going back, and auxiliary electrode is a platinum filament, forms three-electrode system; This three-electrode system is placed the acetic acid/sodium acetate buffer solution that contains kojic acid, and current potential carries out linear sweep voltammetry afterwards from 0.3V to 1.1V cyclic voltammetry scan, and current potential is from 0.3V to 1.1V, and record I-E curve.
9. by the described application of going back ortho states Graphene modified glassy carbon electrode of claim 7, it is characterized in that: described acetic acid/sodium acetate buffer pH value of solution value is 4.0-8.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100437024A CN102192936A (en) | 2011-02-19 | 2011-02-19 | Glassy carbon electrode modified by reduction-state graphene, and preparation and application of glassy carbon electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100437024A CN102192936A (en) | 2011-02-19 | 2011-02-19 | Glassy carbon electrode modified by reduction-state graphene, and preparation and application of glassy carbon electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102192936A true CN102192936A (en) | 2011-09-21 |
Family
ID=44601415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100437024A Pending CN102192936A (en) | 2011-02-19 | 2011-02-19 | Glassy carbon electrode modified by reduction-state graphene, and preparation and application of glassy carbon electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102192936A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129778A (en) * | 2014-06-25 | 2014-11-05 | 天津师范大学 | Preparation method of functionalized graphene used for positive electrode material of lithium ion battery |
| CN106622396A (en) * | 2015-11-03 | 2017-05-10 | 钟梅 | Preparation method of composite catalyst by graphene modified glass carbon electrode |
| CN109490395A (en) * | 2018-10-24 | 2019-03-19 | 东莞理工学院 | A kind of preparation method of graphene-hollow Nano gold goal composite material and its application in electro-catalysis |
| CN113652699A (en) * | 2021-07-05 | 2021-11-16 | 南昌大学 | Method for improving activity of hydrogen production by electrocatalysis of graphene |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941694A (en) * | 2010-09-07 | 2011-01-12 | 湘潭大学 | Preparation method of high-dispersivity graphene |
-
2011
- 2011-02-19 CN CN2011100437024A patent/CN102192936A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941694A (en) * | 2010-09-07 | 2011-01-12 | 湘潭大学 | Preparation method of high-dispersivity graphene |
Non-Patent Citations (4)
| Title |
|---|
| LONGHUA TANG,ET AL.: "Preparation,Structure,and Electrochemical Properties of Reduced Graphene Sheet Films", 《ADV.FUNCT.MATER.》 * |
| WILLIAM S.HUMMERS,ET AL.: "Preparation of Graphitic Oxide", 《J.AM.CHEM.SOC.》 * |
| YI WANG,ET AL.: "Reduced graphene sheets modified glassy carbon electrode for electrocatalytic oxidation of hydrazine in alkaline media", 《ELECTROCHEMISTRY COMMUNICATIONS》 * |
| 周君,等.: "多壁碳纳米管化学修饰玻碳电极用于曲酸的伏安测定", 《理化检验-化学分册》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129778A (en) * | 2014-06-25 | 2014-11-05 | 天津师范大学 | Preparation method of functionalized graphene used for positive electrode material of lithium ion battery |
| CN104129778B (en) * | 2014-06-25 | 2016-08-17 | 天津师范大学 | A kind of preparation method of anode material for lithium-ion batteries functionalization graphene |
| CN106622396A (en) * | 2015-11-03 | 2017-05-10 | 钟梅 | Preparation method of composite catalyst by graphene modified glass carbon electrode |
| CN109490395A (en) * | 2018-10-24 | 2019-03-19 | 东莞理工学院 | A kind of preparation method of graphene-hollow Nano gold goal composite material and its application in electro-catalysis |
| CN113652699A (en) * | 2021-07-05 | 2021-11-16 | 南昌大学 | Method for improving activity of hydrogen production by electrocatalysis of graphene |
| CN113652699B (en) * | 2021-07-05 | 2023-08-29 | 南昌大学 | Method for improving electrocatalytic hydrogen production activity of graphene |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ensafi et al. | Voltammetric determination of isoproterenol using multiwall carbon nanotubes‐ionic liquid paste electrode | |
| Yuan et al. | Fabrication of TiO2 nanoparticles/surfactant polymer complex film on glassy carbon electrode and its application to sensing trace dopamine | |
| Wang et al. | Application of a single-wall carbon nano-tube film electrode to the determination of trace amounts of folic acid | |
| CN102735732B (en) | Preparation and application of nano-cuprous oxide based enzyme-free hydrogen peroxide sensor electrode | |
| Yang et al. | Simultaneous determination of ascorbic acid, uric acid, tryptophan and adenine using carbon-supported NiCoO2 nanoparticles | |
| Tajik et al. | Recent developments in voltammetric and amperometric sensors for cysteine detection | |
| CN105628764A (en) | Uric acid detection electrochemical sensor and preparation and application thereof | |
| CN102944596A (en) | Preparation method of graphene modified glassy carbon electrode and application thereof | |
| Sun et al. | Electrochemical detection of rutin on nitrogen-doped graphene modified carbon ionic liquid electrode | |
| CN102721727A (en) | Electrochemical sensor based on molecular engram and preparation method and application thereof | |
| Mazloum-Ardakani et al. | Carbon nanoparticles and a new derivative of hydroquinone for modification of a carbon paste electrode for simultaneous determination of epinephrine and acetaminophen | |
| CN102192936A (en) | Glassy carbon electrode modified by reduction-state graphene, and preparation and application of glassy carbon electrode | |
| CN106198665B (en) | A kind of electrochemical method of levodopa amine quantitative detection | |
| CN101793862A (en) | L-cysteine/chitosan-modified electrochemical sensor and use thereof | |
| He et al. | A versatile sensor for determination of seven species based on NiFe nanoparticles | |
| CN101576530B (en) | Method for measuring dopamine by utilizing graphite nano-sheet/Nafion composite film to modify electrode | |
| Hu et al. | Simultaneous determination of dopamine and ascorbic acid using the nano‐gold self‐assembled glassy carbon electrode | |
| CN107121466A (en) | A kind of working electrode of charcoal nitrogen composite modification detects the electrochemical method of micro heavy | |
| Niu et al. | Electrochemical behavior of epinephrine at a penicillamine self-assembled gold electrode, and its analytical application | |
| CN103506161A (en) | Graphene composite, application of graphene composite to catalytic methanol oxidation, chemically modified electrode and preparation method of graphene composite | |
| CN105388203A (en) | Method for detecting carmine concentration | |
| CN102645458B (en) | Electrochemical sensor for fast detecting sulfides by grapheme modified electrode as well as building and application of electrochemical sensor | |
| CN109142487B (en) | A kind of functionalization black phosphorus base modified electrode and preparation method thereof for detecting sodium nitrite | |
| Li et al. | Influence of acidity and auxiliary electrode reaction on the oxidation of epinephrine on the pre-anodized carbon paste electrode | |
| Li et al. | Gold nanoparticles/carbon nanotubes composite film modified glassy carbon electrode determination of meclofenoxate hydrochloride |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110921 |