CN107161986A - A kind of preparation and application of three-dimensional grapheme hollow ball/ito glass electrode - Google Patents
A kind of preparation and application of three-dimensional grapheme hollow ball/ito glass electrode Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
- C03C17/3429—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials at least one of the coatings being a non-oxide coating
- C03C17/3441—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials at least one of the coatings being a non-oxide coating comprising carbon, a carbide or oxycarbide
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- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3275—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction
- G01N27/3277—Sensing specific biomolecules, e.g. nucleic acid strands, based on an electrode surface reaction being a redox reaction, e.g. detection by cyclic voltammetry
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/112—Deposition methods from solutions or suspensions by spraying
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Abstract
A kind of preparation and application of three-dimensional grapheme hollow ball/ito glass electrode, are related to a kind of preparation method and applications of electrode material, and the present invention is to solve current material the problem of being limited in terms of biosensor application, preparation method of the present invention is as follows：First, template；2nd, be carbonized cladding process；3rd, automatic spraying process, a kind of three-dimensional grapheme hollow ball/ito glass electrode has that specific surface area is big, conductivity is excellent, high selectivity and the features such as high sensitivity, and present invention is mainly used for prepare a kind of three-dimensional grapheme hollow ball/ito glass electrode material.
Description
Technical field
The present invention relates to a kind of preparation and application of three-dimensional grapheme hollow ball/ito glass electrode.
Background technology
Graphene is one kind with sp2The carbon atom that hybridized orbit is combined is base unit, the only individual layer atom thick of formation
The two-dimensional material of degree, is the basic composition unit for constituting other carbonaceous materials.Graphene has excellent mechanical performance, its bullet
Property modulus and tensile strength respectively reach 1.02 TPa and 130 Gpa, Young's modulus is 1.05 TPa, and Poisson's ratio is 0.186, together
When there is high thermal conductivity and excellent electric property, two-dimentional graphene is a kind of planar structure, greatly reduces graphene
With the contact area of solution, therefore application of the graphene in electrochemical field receives larger limitation, thus, will be original
The graphene-structured of two dimension is changed into hollow three-dimensional graphene ball, and it remains outside the excellent property of graphene, greatly increased
Contact area with solution, becomes excellent biological sensor electrode material.
Uric acid（UA）It is one of most important product of body purine metabolism, is main in the biofluids such as urine and serum
Nitrogen containing component, its normal contents in blood of human body are that UA contents are a series of diseases extremely in 0.13-0.46mM, body
Sign and performance symptom, such as hyperuricemia, Lesch-Nyhan syndromes, arthritis, diabetes, high cholesterol, cardiovascular disease
Disease and kidney trouble etc., therefore UA contents are an indexs of a variety of diseases, so, accurate detection UA contents, for diagnosis and
These diseases are prevented to be significant.
The content of the invention
The present invention is to solve two-dimensional graphene small, to be limited in terms of biosensor application skill is accumulated with solution contact surface
Art problem, develops a kind of preparation method and application of three-dimensional grapheme hollow ball/ito glass electrode, the preparation of the electrode press with
Lower step is carried out：
First, template
1）Prepare 0.2-0.5M NiCl2·6H2O is dissolved in 30ml deionized waters, is placed on magnetic stirring apparatus and is stirred,
10-20M hydrazine hydrate is added after it is uniformly dissolved（N2H4·H2O）, solution is changed into lilac, step one 1）Middle magnetic agitation
The stir speed (S.S.) of device is 300-500r/min；Step one 1）Middle N2H4·H2O mass fraction is 80%；
2）Walls of beaker is cleaned with deionized water, the lilac adhesion that beaker edge is remained is washed away, after it is cooled to room temperature
It is black ball to add solution bottom after 20-30M NaOH solution, reaction 12h, and upper strata is settled solution, step one 2）Middle NaOH
Mass fraction be 50%；
3）By step one 2）In obtained black ball cleaned with deionized water, then suction filtration, is finally done in drying box
It is dry, obtain nickel ball template；
2nd, be carbonized cladding process
1）By step one 3）In obtained nickel ball be added in flask, plus triethylene glycol 40mL adds a few drop NaOH molten thereto
Liquid, under 300-500r/min stir speed (S.S.), 180-240 DEG C is heated to reflux 10-14h；Step 21）Middle NaOH quality point
Number is 50%；
2）By step 21）In obtain product cooling, filtering, clean, drying finally give black powder, black powder is put
Enter in heating furnace, 400-550 DEG C of carbonization treatment 1-2h, step 22 under Ar protections）Heating rate be 10-20 DEG C/min；
3）By step 22）In obtained powder be 1-5mol/L with concentration watery hydrochloric acid perform etching, remove nickel ball template, it
After filter, clean, be dried to obtain three-dimensional grapheme hollow spherical powder, step 23）Middle etching is the stone that will be obtained after carbonization treatment
The nickel ball of black alkene parcel is placed on magnetic stirring apparatus, is etched with 80-100 DEG C of hydrochloric acid solution, is spent after nickel etching is clean
Ionized water is cleaned 2-4 times and filtered on bottle,suction, finally by obtained three-dimensional grapheme hollow ball；
3rd, automatic spraying process
1）By step 23）In obtained three-dimensional grapheme hollow ball mixed with 20mL deionized water, stirring obtains suspension；
2）The cleaning of ito glass：It is cleaned by ultrasonic respectively in acetone soln, ethanol solution and deionized water after 10min, in room
Temperature is lower to be spontaneously dried, and six pieces of ito glasses are fixed in the heating plate of automatic spraying equipment, ito glass are pressed from both sides with adhesive tape
Electrode side is fixed on hot plate, it is ensured that in detection, electrode can directly be contacted with ito glass；
3）By step 31）In obtained suspension be placed in spray gun, step 32 is sprayed on by automatic spraying equipment）In
On obtained ito glass, three-dimensional grapheme hollow ball/ito glass electrode is prepared, whole spraying process is in 10psi air inlet pressures
Get off progress, step 33）The distance of the nozzle of middle spray gun to ito glass is 10-20 cm, and heating dish temperature is 100 DEG C.
Advantages of the present invention：
（1）Nickel ball template is prepared using the method for hydrazine hydrate reduction nickel chloride, by control different proportion reactant it is dense
Degree, to prepare the nickel ball template of different sizes；
（2）Prepared using carbonization cladding process by graphene coated after nickel ball surface, etching nickel, obtain three-dimensional grapheme hollow
Ball, this method is simple to operate, with low cost, it is possible to achieve large batch of production；
（3）Automatic spraying operation is convenient, with low cost and efficiency high.Three-dimensional grapheme hollow ball uniform suspension is coated in
Ito glass surface, has prepared three-dimensional grapheme hollow ball/ito glass electrode.
Brief description of the drawings
Fig. 1 is the stereoscan photograph of the nickel ball prepared.
Fig. 2 is the stereoscan photograph of three-dimensional grapheme hollow ball.
Fig. 3 is the transmission electron microscope photo of three-dimensional grapheme hollow ball.
Fig. 4 is the Raman collection of illustrative plates of three-dimensional grapheme hollow ball.
Fig. 5 is the X ray diffracting spectrum of three-dimensional grapheme hollow ball.
Fig. 6 is three-dimensional grapheme hollow ball/ito glass electrode detection various concentrations UA DPV curves.
Fig. 7 is three-dimensional grapheme hollow ball/ito glass electrode detection various concentrations UA DPV matched curves.
Embodiment
Embodiment one：A kind of preparation side of three-dimensional grapheme hollow ball/ito glass electrode in present embodiment
Method, is specifically what is carried out according to the following steps：
First, template
1）Prepare 0.2-0.5M NiCl2·6H2O is dissolved in 30ml deionized waters, is placed on magnetic stirring apparatus and is stirred,
10-20M hydrazine hydrate is added after it is uniformly dissolved（N2H4·H2O）, solution is changed into lilac, step one 1）Middle magnetic agitation
The stir speed (S.S.) of device is 300-500r/min；Step one 1）Middle N2H4·H2O mass fraction is 80%；
2）Walls of beaker is cleaned with deionized water, the lilac adhesion that beaker edge is remained is washed away, after it is cooled to room temperature
It is black ball to add solution bottom after 20-30M NaOH solution, reaction 12h, and upper strata is settled solution, step one 2）Middle NaOH
Mass fraction be 50%；
3）By step one 2）In obtained black ball cleaned with deionized water, then suction filtration, is finally done in drying box
It is dry, obtain nickel ball template；
2nd, be carbonized cladding process
1）By step one 3）In obtained nickel ball be added in flask, plus triethylene glycol 40mL adds a few drop NaOH molten thereto
Liquid, under 300-500r/min stir speed (S.S.), 180-240 DEG C is heated to reflux 10-14h；Step 21）Middle NaOH quality point
Number is 50%；
2）By step 21）In obtain product cooling, filtering, clean, drying finally give black powder, black powder is put
Enter in heating furnace, 400-550 DEG C of carbonization treatment 1-2h, step 22 under Ar protections）Heating rate be 10-20 DEG C/min；
3）By step 22）In obtained powder be 1-5mol/L with concentration watery hydrochloric acid perform etching, remove nickel ball template, it
After filter, clean, be dried to obtain three-dimensional grapheme hollow spherical powder, step 23）Middle etching is the stone that will be obtained after carbonization treatment
The nickel ball of black alkene parcel is placed on magnetic stirring apparatus, is etched with 80-100 DEG C of hydrochloric acid solution, is spent after nickel etching is clean
Ionized water is cleaned 2-4 times and filtered on bottle,suction, finally by obtained three-dimensional grapheme hollow ball；
3rd, automatic spraying process
1）By step 23）In obtained three-dimensional grapheme hollow ball mixed with 20mL deionized water, stirring obtains suspension；
2）The cleaning of ito glass：It is cleaned by ultrasonic respectively in acetone soln, ethanol solution and deionized water after 10min, in room
Temperature is lower to be spontaneously dried, and six pieces of ito glasses are fixed in the heating plate of automatic spraying equipment, ito glass are pressed from both sides with adhesive tape
Electrode side is fixed on hot plate, it is ensured that in detection, electrode can directly be contacted with ito glass；
3）By step 31）In obtained suspension be placed in spray gun, step 32 is sprayed on by automatic spraying equipment）In
On obtained ito glass, three-dimensional grapheme hollow ball/ito glass electrode is prepared, whole spraying process is in 10psi air inlet pressures
Get off progress, step 33）The distance of the nozzle of middle spray gun to ito glass is 10-20 cm, and heating dish temperature is 100 DEG C.
Embodiment two：Present embodiment from unlike embodiment one：Step one 1）Middle preparation 0.3-
0.4M NiCl2·6H2O is dissolved in 30ml deionized waters, is placed on magnetic stirring apparatus and is stirred, and is added after it is uniformly dissolved
Enter 12-18M hydrazine hydrate（N2H4·H2O）, it is other identical with embodiment one.
Embodiment three：Unlike one of present embodiment and embodiment one or two：Step one 3）In
Obtained nickel ball is added in flask, plus triethylene glycol 40mL, a few drop NaOH solutions is added thereto, in stirring for 350-450r/min
Mix under speed, 190-230 DEG C is heated to reflux 11-13h, other identical with one of embodiment one or two.
Embodiment four：Unlike one of present embodiment and embodiment one to three：Step 22）In
Obtained black powder is put into heating furnace, 420-480 DEG C of carbonization treatment 1-2h, step 22 under Ar protections）Heating rate
For 12-18 DEG C/min；It is other identical with one of embodiment one to three.
Embodiment five：Unlike one of present embodiment and embodiment one to four：Step 23）In
The watery hydrochloric acid that obtained powder is 2-4mol/L with concentration is performed etching, and removes nickel ball template.Filter, clean, be dried to obtain three
Tie up graphene hollow spherical powder.Step 23）Middle etching is that the nickel ball for wrapping up the graphene obtained after carbonization treatment is placed in magnetic force
On agitator, etched with 85-95 DEG C of hydrochloric acid solution；It is other identical with one of embodiment one to four.
Using following verification experimental verifications effect of the present invention：
A kind of preparation method of three-dimensional grapheme hollow ball/ito glass electrode of this experiment is realized by the following method：
First, template
1）Prepare 0.36M NiCl2·6H2O is dissolved in 30ml deionized waters, is placed on magnetic stirring apparatus and is stirred, treats it
16M N is added after being uniformly dissolved2H4·H2O, solution is changed into lilac.Step one 1）The stir speed (S.S.) of middle magnetic stirring apparatus is
300r/min；Step one 1）Middle N2H4·H2O mass fraction is 80 %；
2）Walls of beaker is cleaned with deionized water, the lilac adhesion that beaker edge is remained is washed away, after it is cooled to room temperature
Add 25M NaOH solution.It is black ball to react solution bottom after 12h, and upper strata is settled solution.Step one 2）Middle NaOH matter
It is 50% to measure fraction；
3）Step one 2）In obtained black ball cleaned with deionized water, then suction filtration, is finally dried in drying box
To nickel ball template；
2nd, be carbonized cladding process
1）By step one 3）In obtained nickel ball be added in flask, plus triethylene glycol 40mL adds a few drop NaOH molten thereto
Liquid, under 300r/min stir speed (S.S.), 220 DEG C are heated to reflux 12h；Step 21）Middle NaOH mass fraction is 50%；
2）By step 21）In obtain product cooling, filtering, clean, drying finally give black powder.Black powder is put
Enter in heating furnace, 500 DEG C of h of carbonization treatment 1, step 22 under Ar protections）Heating rate be 10 DEG C/min；
3）By step 22）In obtained powder be 3mol/L with concentration watery hydrochloric acid perform etching, remove nickel ball template.Cross
Filter, clean, being dried to obtain three-dimensional grapheme hollow spherical powder.Step 23）Middle etching is the graphene that will be obtained after carbonization treatment
The nickel ball of parcel is placed on magnetic stirring apparatus, is etched with 90 DEG C of hydrochloric acid solutions.Deionized water is used after nickel ball etching is clean
Cleaning 3 times is simultaneously filtered on bottle,suction, finally by obtained three-dimensional grapheme hollow ball；
3rd, automatic spraying process
1）By step 23）In obtained three-dimensional grapheme hollow ball mixed with 20mL deionized water, stirring obtains suspension；
2）The cleaning of ito glass：It is cleaned by ultrasonic respectively in acetone soln, ethanol solution and deionized water after 10min, in room
Temperature is lower to be spontaneously dried.Six pieces of ito glasses are fixed in the heating plate of automatic spraying equipment, ito glass are pressed from both sides with adhesive tape
Electrode side is fixed on hot plate, it is ensured that in detection, electrode can directly be contacted with ito glass；
3）By step 31）In obtained suspension be placed in spray gun, step 32 is sprayed on by automatic spraying equipment）In
On obtained ito glass, three-dimensional grapheme hollow ball/ito glass electrode is prepared.Whole spraying process is in 10psi air inlet pressures
Get off progress.Step 33）The distance of the nozzle of middle spray gun to ito glass is 15 cm, and heating dish temperature is 100 DEG C.
Fig. 1 is the stereoscan photograph of the nickel ball prepared.As can be seen from the figure the diameter dimension of nickel ball template is ~ 100
Nm or so, size uniform, regular appearance, and be uniformly dispersed.
Fig. 2 is the stereoscan photograph that carbonization cladding process obtains three-dimensional grapheme hollow ball.Three-dimensional stone as can be seen from Figure
Black alkene hollow ball is hollow sphere, shows to be etched completely by hydrochloric acid as the nickel ball of template.
Fig. 3 is the transmission electron microscope photo that carbonization cladding process obtains three-dimensional grapheme hollow ball.Three-dimensional stone as seen from the figure
Black alkene ball is in hollow-core construction.
Fig. 4 is the Raman collection of illustrative plates that carbonization cladding process obtains three-dimensional grapheme hollow ball.As can be seen from Figure, 1359,
1591 and 2795 cm-1Position at occur in that the characteristic peaks of three graphenes, three peaks are by SP respectively3Orbital hybridization carbon
D bands caused by the coplanar vibration of atom, 2D bands and SP caused by double resonance Raman scattering2The coplanar vibration of hydbridized carbon atoms is drawn
The G bands risen.G band height is higher, it was demonstrated that the order of graphene hollow ball is higher.I D/I GAbout 0.9, show the three-dimensional stone prepared
There is a small amount of defect in black alkene hollow ball.AndI G/I 2DMore than 1, then it is few layer of graphene to show what is prepared.
Fig. 5 is the X ray diffracting spectrum of three-dimensional grapheme hollow ball.As can be seen that the θ of the angle of diffraction 2 is at 26. 6 ° and 54.
5 ° of position occurs in that obvious diffraction maximum, corresponds respectively to the diffraction crystal face of (002) and (004) of graphene.
Fig. 6 is three-dimensional grapheme hollow ball/ito glass electrode detection various concentrations UA differential pulse voltammetry（DPV）It is bent
Line.UA oxidation peak appears in+0.25V, with UA concentration (CUA) increase, oxidation peak current gradually rises.
Fig. 7 is three-dimensional grapheme hollow ball/ito glass electrode detection various concentrations UA differential pulse voltammetry（DPV）'s
Matched curve.From matched curve, UA oxidation peak current (IP) it is linear with corresponding concentration value, matched curve side
Cheng Wei：Ip(UA)=(0.57±0.12)+(0.32±0.01)C UA , linearly dependent coefficient R2=0.999.It follows that UA's
When concentration is 0-60 μM, electrode detection UA sensitivity is 0.32 μ A μM-1。
Claims (8)
1. a kind of preparation and application of three-dimensional grapheme hollow ball/ito glass electrode, it is characterised in that three-dimensional grapheme is hollow
The preparation method of ball/ito glass electrode is carried out according to the following steps：
First, template
Prepare 0.2-0.5M NiCl2·6H2O is dissolved in 30ml deionized waters, is placed on magnetic stirring apparatus and is stirred, treats it
10-20M hydrazine hydrate is added after being uniformly dissolved（N2H4·H2O）, solution is changed into lilac, step one 1）Middle magnetic stirring apparatus
Stir speed (S.S.) is 300-500r/min；Step one 1）Middle N2H4·H2O mass fraction is 80%；
Walls of beaker is cleaned with deionized water, the lilac adhesion that beaker edge is remained is washed away, added after it is cooled to room temperature
It is black ball to enter solution bottom after 20-30M NaOH solution, reaction 12h, and upper strata is settled solution, step one 2）Middle NaOH's
Mass fraction is 50%；
By step one 2）In obtained black ball cleaned with deionized water, then suction filtration, is finally dried in drying box, obtains
To nickel ball template；
2nd, be carbonized cladding process
By step one 3）In obtained nickel ball be added in flask, plus triethylene glycol 40mL adds a few drop NaOH solutions thereto,
Under 300-500r/min stir speed (S.S.), 180-240 DEG C is heated to reflux 10-14h；Step 21）Middle NaOH mass fraction is
50%；
By step 21）In obtain product cooling, filtering, clean, drying finally give black powder, black powder is put into
In heating furnace, 400-550 DEG C of carbonization treatment 1-2h, step 22 under Ar protections）Heating rate be 10-20 DEG C/min；
By step 22）In obtained powder be 1-5mol/L with concentration watery hydrochloric acid perform etching, remove nickel ball template, afterwards
Filter, clean, being dried to obtain three-dimensional grapheme hollow spherical powder, step 23）Middle etching is the graphite that will be obtained after carbonization treatment
The nickel ball of alkene parcel is placed on magnetic stirring apparatus, is etched with 80-100 DEG C of hydrochloric acid solution, spent after nickel etching is clean from
Sub- water is cleaned 2-4 times and filtered on bottle,suction, finally by obtained three-dimensional grapheme hollow ball；
3rd, automatic spraying process
1）By step 23）In obtained three-dimensional grapheme hollow ball mixed with 20mL deionized water, stirring obtains suspension；
2）The cleaning of ito glass：It is cleaned by ultrasonic respectively in acetone soln, ethanol solution and deionized water after 10min, in room
Temperature is lower to be spontaneously dried, and six pieces of ito glasses are fixed in the heating plate of automatic spraying equipment, ito glass are pressed from both sides with adhesive tape
Electrode side is fixed on hot plate, it is ensured that in detection, electrode can directly be contacted with ito glass；
3）By step 31）In obtained suspension be placed in spray gun, step 32 is sprayed on by automatic spraying equipment）In
On obtained ito glass, three-dimensional grapheme hollow ball/ito glass electrode is prepared, whole spraying process is in 10psi air inlet pressures
Get off progress, step 33）The distance of the nozzle of middle spray gun to ito glass is 10-20 cm, and heating dish temperature is 100 DEG C.
2. a kind of preparation method of three-dimensional grapheme hollow ball/ito glass electrode according to claim 1, its feature exists
In step one 2）It is middle to clean walls of beaker with deionized water, the lilac adhesion that beaker edge is remained is washed away, treats that it is cooled to
It is black ball that solution bottom after 20-30M NaOH solution, reaction 12h is added after room temperature, and upper strata is settled solution.
3. a kind of preparation method of three-dimensional grapheme hollow ball/ito glass electrode according to claim 1, its feature exists
In step 21）It is middle by step one 3）In obtained nickel ball be added in flask, plus triethylene glycol 40mL adds several drops thereto
NaOH solution, under 300-500r/min stir speed (S.S.), 180-240 DEG C is heated to reflux 10-14 h, step 21）Middle NaOH's
Mass fraction is 50%.
4. a kind of preparation method of three-dimensional grapheme hollow ball/ito glass electrode according to claim 1, its feature exists
In step 22）By step 21）In obtain product cooling, filtering, clean, drying finally give black powder, by black powder
End is put into heating furnace, 400-550 DEG C of carbonization treatment 1-2 h, step 22 under Ar protections）Heating rate for 10-20 DEG C/
min。
5. a kind of preparation method of three-dimensional grapheme hollow ball/ito glass electrode according to claim 1, its feature exists
In step 23）It is middle by step 22）The watery hydrochloric acid that obtained powder is 1-5mol/L with concentration is performed etching, and removes nickel ball mould
Plate, filters, cleans, being dried to obtain three-dimensional grapheme hollow spherical powder, step 23）Middle etching will be obtained after carbonization treatment
Graphene parcel nickel ball be placed on magnetic stirring apparatus, with 80-100 DEG C of hydrochloric acid solution etch, after nickel etching after spend from
Sub- water is cleaned 2-4 times and filtered on bottle,suction, finally by obtained three-dimensional grapheme hollow ball.
6. a kind of preparation method of three-dimensional grapheme hollow ball/ito glass electrode according to claim 1, its feature exists
In the cleaning of ito glass：It is cleaned by ultrasonic respectively in acetone soln, ethanol solution and deionized water after 10min, at room temperature certainly
So dry, six pieces of ito glasses are fixed in the heating plate of automatic spraying equipment, ito glass is pressed from both sides into electrode one with adhesive tape
Side is fixed on hot plate, it is ensured that in detection, electrode can directly be contacted with ito glass.
7. a kind of preparation method of three-dimensional grapheme hollow ball/ito glass electrode according to claim 1, its feature exists
In by step 31）In obtained suspension be placed in spray gun, step 32 is sprayed on by automatic spraying equipment）In obtain
Ito glass on, obtain three-dimensional grapheme hollow ball/ito glass electrode, whole spraying process is under 10psi air inlet pressures
Carry out, step 33）The distance of the nozzle of middle spray gun to ito glass is 15cm, and heating dish temperature is 100 DEG C.
8. a kind of application of three-dimensional grapheme hollow ball/ito glass electrode, it is characterised in that three-dimensional grapheme hollow ball/ITO glass
Glass electrode is used as working electrode in biology sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540046.6A CN107161986A (en) | 2017-07-05 | 2017-07-05 | A kind of preparation and application of three-dimensional grapheme hollow ball/ito glass electrode |
Applications Claiming Priority (1)
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| CN108439381A (en) * | 2018-03-22 | 2018-08-24 | 哈尔滨理工大学 | A kind of preparation of three-dimensional grapheme and Electrochemical Detection levodopa |
| WO2019080048A1 (en) * | 2017-10-26 | 2019-05-02 | 深圳大学 | Method for preparing graphene oxide-coated hollow glass microbeads |
| CN110223853A (en) * | 2019-06-21 | 2019-09-10 | 哈尔滨理工大学 | A kind of preparation and application of polyaniline nano linear array/graphene hollow sphere |
| CN110233057A (en) * | 2019-06-21 | 2019-09-13 | 哈尔滨理工大学 | Polyaniline nano-line/graphene hollow sphere-graphene oxide preparation and application |
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| WO2019080048A1 (en) * | 2017-10-26 | 2019-05-02 | 深圳大学 | Method for preparing graphene oxide-coated hollow glass microbeads |
| CN108439381A (en) * | 2018-03-22 | 2018-08-24 | 哈尔滨理工大学 | A kind of preparation of three-dimensional grapheme and Electrochemical Detection levodopa |
| CN110223853A (en) * | 2019-06-21 | 2019-09-10 | 哈尔滨理工大学 | A kind of preparation and application of polyaniline nano linear array/graphene hollow sphere |
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