CN102583582A - Co3O4 nanocrystal, preparation method thereof, use thereof and non-enzymatic hydrogen peroxide sensor thereof - Google Patents
Co3O4 nanocrystal, preparation method thereof, use thereof and non-enzymatic hydrogen peroxide sensor thereof Download PDFInfo
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- CN102583582A CN102583582A CN2012100556013A CN201210055601A CN102583582A CN 102583582 A CN102583582 A CN 102583582A CN 2012100556013 A CN2012100556013 A CN 2012100556013A CN 201210055601 A CN201210055601 A CN 201210055601A CN 102583582 A CN102583582 A CN 102583582A
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000002159 nanocrystal Substances 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 title abstract description 20
- 230000002255 enzymatic effect Effects 0.000 title abstract 2
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 claims abstract description 16
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004202 carbamide Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000007921 spray Substances 0.000 claims description 37
- 239000000243 solution Substances 0.000 claims description 16
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 13
- 239000000047 product Substances 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 239000012265 solid product Substances 0.000 claims description 4
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 2
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000002086 nanomaterial Substances 0.000 abstract description 21
- 239000005725 8-Hydroxyquinoline Substances 0.000 abstract description 10
- 229960003540 oxyquinoline Drugs 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 239000002243 precursor Substances 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract 1
- 102000004190 Enzymes Human genes 0.000 description 10
- 108090000790 Enzymes Proteins 0.000 description 10
- 229910021397 glassy carbon Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000007605 air drying Methods 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 239000008055 phosphate buffer solution Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 238000000970 chrono-amperometry Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 2
- JLLMDXDAVKMMEG-UHFFFAOYSA-N hydrogen peroxide phosphoric acid Chemical compound OO.OP(O)(O)=O JLLMDXDAVKMMEG-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
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- 238000006479 redox reaction Methods 0.000 description 2
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- 239000002904 solvent Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001149 thermolysis Methods 0.000 description 2
- 102100030497 Cytochrome c Human genes 0.000 description 1
- 108010075031 Cytochromes c Proteins 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 108010001336 Horseradish Peroxidase Proteins 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention which discloses a Co3O4 nanocrystal, a preparation method thereof, a use thereof and a non-enzymatic hydrogen peroxide sensor thereof relates to a nanostructure. The Co3O4 nanocrystal has a flower spray-shaped crystal morphology. The preparation method comprises the following steps: mixing an aqueous Co<2+> solution with 8-hydroxyquinoline and urea, reacting under a hydrothermal condition to obtain a solid deposit which is a Co and 8-hydroxyquinoline complex, and roasting the complex as a precursor at a high temperature to obtain the Co3O4 nanocrystal. An inert electrode is modified by the Co3O4 nanocrystal to prepare the hydrogen peroxide sensor which is used for measuring the concentration of hydrogen peroxide in a solution. The method provided in the invention, which is simple and mild and treats the complex as the predecessor, allows the flower spray-shaped Co3O4 nanocrystal with the advantages of high yield and high quality to be obtained.
Description
Technical field
The present invention relates to a kind of nanostructure, particularly a kind of Co
3O
4Nanostructure, its preparation method, purposes and hydrogen peroxide sensor.
Background technology
Hydrogen peroxide (H
2O
2) be a kind of in environment and living things system all very important intermediate compound, be widely used at present polluting in the fields such as control, textile and paper bleaching, foodstuff production, sterilant.Yet well-known, it also is a kind of environment to be had the chemical reagent of harm, and can cause multiple advancing of disease.Therefore accurately the concentration of measuring hydrogen peroxide seems most important to aspects such as environment, pharmacy, clinical and industrial researches.Electrochemical process is to detect H
2O
2A kind of method of most convenient; Yet; Because dynamic process and the required high overvoltage of redox reaction make that hydrogen peroxide is not suitable for directly on exposed electrode, utilizing electrochemical analysis method to detect, and must utilize the chemical process counter electrode to modify slowly.Recently; Scientists study the hydrogen peroxide biosensor; This biosensor fixes on enzyme/proteinaceous solid and is used for modified electrode on the various materials and forms, such as oxyphorase be fixed on the multi-walled carbon nano-tubes, cytochrome c is fixed on the attapulgite, horseradish peroxidase is fixed on the ceramic carbon nanotube composite film or the like.Yet; The fixation procedure of biomolecules such as enzyme/protein is very complicated; And because the internal characteristics of enzyme itself; Therefore its activity is easy to receive the influence of factors such as temperature, humidity and pH value, makes the application of these hydrogen peroxide biosensors receive great restriction, develops a kind of stable, no enzyme hydrogen peroxide sensor easy to operate and high efficiency and has very important practical significance.
Recently, a metal-organic complex of synthetic different nanostructures has attracted a large amount of coordination chemistry investigators' interest.The MOX that the metal organic nanostructure can obtain to have corresponding nanostructure as precursor through thermolysis, like metal/decolorizing carbon, metal/carbon nanotube, metal/graphite etc., this provides a kind of new approach for nano material synthetic.The present invention utilizes the coordination between cobalt metal and the oxine, has synthesized a kind of Co-8-hydroxyquinoline title complex with spray shape structure first, successfully is translated into the Co of spray shape
3O
4Nanocrystalline, and it is developed into no enzyme hydrogen peroxide sensor, make it to be used for H
2O
2The detection of concentration.
Summary of the invention
The object of the present invention is to provide the Co-8-hydroxyquinoline title complex with spray shape structure and the Co of spray shape
3O
4Nanocrystalline, and the effective ways that provide these two kinds of structures to prepare simultaneously.
Another object of the present invention is the Co with above-mentioned spray shape
3O
4Nanocrystalline, be used for H
2O
2The detection of concentration provides a kind of effective no enzyme H
2O
2Transmitter.
Co among the present invention
3O
4Nanocrystalline, have spray shape pattern.
Said spray shape pattern is by therefrom dispersing the Co that growth is arranged outside the mind-set
3O
4Nanometer rod is formed, and the diameter of nanometer rod is the 10-100 nanometer, and length is 500 nanometers-5 micron.
Co among the present invention
3O
4Preparation of nano crystal: with Co
2+The aqueous solution mixes with urea and oxine; Under 160-220 ℃ of following hydrothermal condition, kept 16-36 hour; Separating obtained product after washing drying, in air 400-500 ℃ roasting 0.5-2 hour, the solid deposits that reaction obtains is described nano-cobaltic-cobaltous oxide.
Said Co
2+The aqueous solution is cobalt nitrate aqueous solution, and concrete steps are following:
A) Xiao Suangu, urea and 8-hydroxy-quinoline in water are mixed by mass ratio at 3: 2: 1;
B) above-mentioned mixing solutions is poured in the autoclave, closed autoclave, kept 20-28 hour in 180-220 ℃;
C) cool to room temperature, solid product is through separating, wash after drying;
D) solid product is collected in 450 ℃ of roastings 1 hour in air.
Co of the present invention
3O
4Nanocrystalline, can be used for detecting the concentration of hydrogen peroxide.
With Co of the present invention
3O
4The nanocrystalline modification can be made into H on noble electrode
2O
2Transmitter is used for measuring solution H
2O
2Content and concentration.
Said noble electrode is glass-carbon electrode, platinum electrode or gold electrode.
The present invention adopts process from bottom to top, utilizes Co
2+With the oxine coordination, synthesize spray shape Co-8-hydroxyquinoline title complex.Adopting Xiao Suangu is the cobalt source, and under the hydrothermal condition of oxine and urea existence, the spray shape Co-8-hydroxyquinoline title complex of this novelty can be synthetic by high productivity.Product can obtain spray shape Co through thermolysis
3O
4Nanocrystalline.Experiment parameter (for example: concentration, mass ratio, temperature and reaction times etc.) changes the structure and the assembling mode that can not change product within the specific limits.Fig. 1 has shown the 0.15g Xiao Suangu, 0.1g CO (NH
2)
2With the oxine of 0.05g, the stereoscan photograph (SEM) of 24 hours products therefroms of reaction under 200 ℃ of hydrothermal conditions.As can be seen from the figure gained Co-8-hydroxyquinoline title complex is a spray shape structure, is therefrom dispersed arrangement and forms in the mind-set outside by nanometer rod.The diameter of nanometer rod is the 10-100 nanometer, and length is 500 nanometers-5 micron.The 450 ℃ of roastings 1 hour in air of this product can obtain the black nano tricobalt tetroxide.From the X-ray diffractogram of thermal decomposition product (XRD, Fig. 2) in, we can see all XRD diffraction peaks and Co cube mutually
3O
4(this meaning precursor complexes is converted into the cobaltosic oxide nano structure to the standard spectrogram fully for JCPDS, No.74-1657) unanimity.Its spray shape structure of still keeping its precursor and being had of SEM observation proof.What Fig. 3 showed is the typical SEM photo of product, can find out the spray shape composite structure that product is made up of the nano wire of many diameter 10-50nm, length 2-3 micron.Transmission electron microscope (TEM) observation has confirmed the result of SEM gained equally, and from Fig. 4, we can see that spray shape structure centre is thicker, and therefrom disperses around the mind-set.Corresponding electron diffraction pattern (Fig. 4 b illustration) has then shown the monocrystalline characteristics of single cobaltosic oxide nano rod.
Tricobalt tetroxide is as a kind of important p type magneticsemiconductor; Be widely used in lithium ion battery; Heterogeneous catalyst, in electrochemical capacitor equipment and the some other application, cobaltosic oxide nano material particularly; Owing to can strengthen physics-chemical reactivity effectively in its special quantum size effect etc., receive a large amount of concerns in recent years.The spray shape Co that the present invention will synthesize
3O
4Be modified at the glass-carbon electrode surface after nanostructure is dispersed in the perfluorinated sulfonic resin, it is developed into no enzyme H
2O
2Transmitter is applied to the measurement of content of hydrogen peroxide and concentration in the solution.Fig. 5 shows is unmodified and through spray shape Co under different condition
3O
4Nanostructure is modified the linear time base sweep volt-ampere curve of back glass-carbon electrode in containing the 0.05M PBS solution (pH value=7.40) of different concns hydrogen peroxide.As can be seen from the figure, when adopting the unmodified glass-carbon electrode, the redox peak of hydrogen peroxide does not appear in curve.And when adopting through spray shape Co
3O
4During the nanostructure modified glassy carbon, then have tangible redox peak on the linear time base sweep volt-ampere curve, show spray shape Co
3O
4Nanostructure has very strong electro catalytic activity to the redox reaction of hydrogen peroxide.And it can also be seen that from figure along with the increase of concentration of hydrogen peroxide in the solution, the intensity at redox peak also increasing, shows spray shape Co
3O
4Nanostructure is responsive to the concentration change of hydrogen peroxide.Fig. 6 shows is along with the current-responsive that increase continuously of concentration of hydrogen peroxide from 0.5 to 1.7mM; Interpolation along with each hydrogen peroxide; Current signal will increase fast observantly; Shown that the electrode pair concentration of hydrogen peroxide changes and to have very good response, and current responsing signal changes and the variation of concentration of hydrogen peroxide have good linear relationship (coefficient R=0.9986, Fig. 7).We have also measured commercial Co under conditions of similarity
3O
4The response property to hydrogen peroxide of powder (Fig. 7).Along with the interpolation of hydrogen peroxide, commercial Co
3O
4The summit current of powder modified glassy carbon changes very little, has explained and commercial Co
3O
4Powder is compared, spray shape Co
3O
4Nanostructure has improved the response efficiency to hydrogen peroxide molecule greatly.These results show spray shape Co
3O
4Nanostructure sensors has good susceptibility and big detectable level scope to hydrogen peroxide in the solution, can be used for the detection of solution content of hydrogen peroxide and concentration as a kind of potential hydrogen peroxide sensor.
The present invention has synthesized a kind of novel spray shape Co
3O
4Nanostructure, this Co with spray shape structure
3O
4Nanocrystallinely can develop into the detection that no enzyme hydrogen peroxide sensor is used for the solution hydrogen peroxide.The invention provides a kind of simple gentleness, with the auxiliary synthetic method of oxine and urea, realized Co-8-hydroxyquinoline title complex and Co
3O
4Nanocrystalline synthetic and assembling has synchronously obtained high yield, high-quality spray shape Co under hydrothermal condition
3O
4Powder.Co through spray shape structure
3O
4The noble electrode of nanocrystalline modification is to H in the solution
2O
2Has good response and to H
2O
2The variation of concentration has shown good linear response relationship and high sensitivity, and this makes the Co of this spray structure
3O
4Nanocrystallinely can develop into no enzyme H
2O
2Transmitter is used for actual H
2O
2Detect.
Description of drawings
Fig. 1 is the 0.15g Xiao Suangu, 0.1g CO (NH
2)
2With the oxine of 0.05g, the stereoscan photograph of 24 hours products therefroms of reaction under 200 ℃ of hydrothermal conditions
Fig. 2 is the 0.15g Xiao Suangu, 0.1g CO (NH
2)
2With the oxine of 0.05g, the X ray diffracting spectrum of 1 hour products therefrom of reaction products therefrom 450 ℃ of roastings of warp in 24 hours under 200 ℃ of hydrothermal conditions
Fig. 3 is the 0.15g Xiao Suangu, 0.1g CO (NH
2)
2With the oxine of 0.05g, the stereoscan photograph of 1 hour products therefrom of reaction products therefrom 450 ℃ of roastings of warp in 24 hours under 200 ℃ of hydrothermal conditions
Fig. 4 is the 0.15g Xiao Suangu, 0.1g CO (NH
2)
2With the oxine of 0.05g, the transmission electron microscope photo and the SEAD collection of illustrative plates of 1 hour products therefrom of reaction products therefrom 450 ℃ of roastings of warp in 24 hours under 200 ℃ of hydrothermal conditions
Fig. 5 is spray shape Co
3O
4The nanostructure modified glassy carbon in 0.05MPBS (pH value=7.40) solution to the linear time base sweep volt-ampere curve of different concns superoxol
Fig. 6 is spray shape Co
3O
4The nanostructure modified glassy carbon in 0.05MPBS (pH value=7.40) solution along with the current responsing signal that increase continuously of concentration of hydrogen peroxide from 0.5 to 1.7mM changes.
Fig. 7 is through spray shape Co
3O
4Nanostructure and commercial Co
3O
4Powder modified glassy carbon current responsing signal in 0.05MPBS (pH value=7.40) solution changes and the variation linear relationship curve of concentration of hydrogen peroxide
Embodiment
Embodiment 1
Oxine, 0.1g CO (NH with 0.05g
2)
2With 20mL 0.025M Co (NO
3)
2Solution mixes, and then it is transferred in the stainless steel cauldron of 50mL teflon lined.Sealed reactor kept 24 hours down at 200 ℃.Take out reaction kettle then, naturally cool to room temperature, gained precipitates after filtering, repeatedly washs with absolute ethyl alcohol and zero(ppm) water, then at air drying again.Gained Co-8-hydroxyquinoline title complex is a spray shape structure, is therefrom dispersed arrangement and forms in the mind-set outside by nanometer rod.The diameter of nanometer rod is the 10-50 nanometer, and length is 500 nanometers-5 micron.
With the spray shape title complex that obtains in the foregoing description 1 450 ℃ of following roastings 1 hour in air, obtain black cobaltosic oxide nano structure.The gained tricobalt tetroxide is a spray shape structure, is therefrom dispersed arrangement and forms in the mind-set outside by nanometer rod.The diameter of nanometer rod is the 10-50 nanometer, and length is 500 nanometers-5 micron.
Embodiment 3
Spray shape Co with the foregoing description 2 acquisitions
3O
4Nanocrystalline 0.1mg and 10 μ l solvents (perfluorosulfonic acid ester solvent/deionized water=1: 3) mix and ultrasonic after it is disperseed well; Modify then in the glass-carbon electrode surface; At air drying 1h, and it is linked to each other with electrochemical workstation, as working electrode; Other two electrodes are respectively platinum electrode and silver/Silver monochloride reference electrode, and it is inserted the H of different concns
2O
2Phosphate buffer solution in, (concentration is respectively 0.5; 1.0; 1.3; 1.7mM), obtain the linear time base sweep cyclic voltammetry curve, the summit current at detection-0.77V place, along with the rising of concentration of hydrogen peroxide, summit current raises gradually, and spray shape Co is described
3O
4Variation has good sensitivity to nanocrystalline modified glassy carbon to concentration of hydrogen peroxide.Working electrode in the present embodiment can replace to other noble electrode, for example: Au electrode or Pt electrode.
Embodiment 4
With the spray shape Co that is obtained among the embodiment 3
3O
4Nanocrystalline modified glassy carbon links to each other with electrochemical workstation; As working electrode, other two electrodes are respectively platinum electrode and silver/Silver monochloride reference electrode, place the 10ml phosphate buffer solution; Under-0.77V current potential; Every interval 50s adds 10 μ l 10mM hydrogen peroxide phosphate buffer solutions respectively, uses the change curve of its electric current of chronoamperometry test with concentration, demonstrates good linear relationship.Working electrode in the present embodiment can replace to other noble electrode, for example: Au electrode or Pt electrode.
With commercial Co
3O
4Powder 0.1mg and 10 μ l solvents (perfluorosulfonic acid ester solvent/deionized water=1: 3) mix and ultrasonic after it is disperseed well; Modify then in the glass-carbon electrode surface,, it is linked to each other with electrochemical workstation at air drying 1h; As working electrode; Other two electrodes are respectively platinum electrode and silver/Silver monochloride reference electrode, place the 10ml phosphate buffer solution, under-0.77V current potential; Every interval 50s adds 10 μ l 10mM hydrogen peroxide phosphate buffer solutions respectively, uses the change curve of its electric current of chronoamperometry test with concentration.Working electrode in the present embodiment can replace to other noble electrode, for example: Au electrode or Pt electrode.
Claims (8)
1. Co
3O
4Nanocrystalline, it is characterized in that: said Co
3O
4Nanocrystalline have a spray shape pattern of being made up of nanometer rod.
2. Co as claimed in claim 1
3O
4Nanocrystalline, it is characterized in that: said spray shape pattern is by therefrom dispersing the Co that growth is arranged outside the mind-set
3O
4Nanometer rod is formed.
3. Co as claimed in claim 2
3O
4Nanocrystalline, it is characterized in that: the diameter of said nanometer rod is the 10-100 nanometer, and length is 500 nanometers-5 micron.
4. Co as claimed in claim 1
3O
4Preparation of nano crystal is characterized in that preparing as follows: with Co
2+The aqueous solution mixes with urea and oxine, at 160-220.℃ following hydrothermal condition kept 16-36 hour down, separating obtained product after washing drying, 400-500 in air.℃ roasting 0.5-2 hour, the black solid settling that reaction obtains was described nano-cobaltic-cobaltous oxide.
5. Co as claimed in claim 4
3O
4Preparation of nano crystal is characterized in that said Co
2+The aqueous solution is cobalt nitrate aqueous solution, and concrete steps are following:
A) Xiao Suangu, urea and oxine in water are mixed by mass ratio at 3: 2: 1;
B) above-mentioned mixing solutions is poured in the autoclave, closed autoclave, in 180-220.℃ kept 20-28 hour;
C) cool to room temperature, solid product is through separating, wash after drying;
D) in air 450.Solid product is collected in ℃ roasting 1 hour.
6. Co as claimed in claim 1
3O
4Nanocrystalline purposes is characterized in that being used for the detection of concentration of hydrogen peroxide.
7. one kind with the described Co of claim 1
3O
4The nanocrystalline hydrogen peroxide sensor of processing is characterized in that comprising noble electrode and said Co
3O
4Nanocrystalline, said Co
3O
4Manocrystalline powders is modified on noble electrode.
8. hydrogen peroxide sensor as claimed in claim 7 is characterized in that said noble electrode is glass-carbon electrode, platinum electrode or gold electrode.
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|---|---|---|---|
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100556013A CN102583582A (en) | 2012-03-06 | 2012-03-06 | Co3O4 nanocrystal, preparation method thereof, use thereof and non-enzymatic hydrogen peroxide sensor thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076375A (en) * | 2012-12-21 | 2013-05-01 | 吉林大学 | Preparation method and application of coaxial entity/nano porous gold/Co3O4 compound electrode material |
| CN103983680A (en) * | 2014-04-29 | 2014-08-13 | 浙江大学 | Novel hydrogen peroxide electrochemical sensor |
| CN104568934A (en) * | 2015-01-05 | 2015-04-29 | 上海纳米技术及应用国家工程研究中心有限公司 | Application of nanometer cobaltosic oxide used as peroxide enzyme mimic for measuring concentration of hydrogen peroxide |
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| CN107941882A (en) * | 2017-11-27 | 2018-04-20 | 海南师范大学 | A kind of preparation and application research of electrochemica biological sensor part based on cobaltosic oxide and horseradish peroxidase modified electrode |
| CN115893509A (en) * | 2022-11-04 | 2023-04-04 | 洛阳理工学院 | Preparation method of cobaltosic oxide/nitrogen-doped carbon composite material for lithium ion battery cathode material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076375A (en) * | 2012-12-21 | 2013-05-01 | 吉林大学 | Preparation method and application of coaxial entity/nano porous gold/Co3O4 compound electrode material |
| CN103983680A (en) * | 2014-04-29 | 2014-08-13 | 浙江大学 | Novel hydrogen peroxide electrochemical sensor |
| CN103983680B (en) * | 2014-04-29 | 2016-05-18 | 浙江大学 | A kind of novel hydrogen peroxide electrochemical sensor |
| CN104568934A (en) * | 2015-01-05 | 2015-04-29 | 上海纳米技术及应用国家工程研究中心有限公司 | Application of nanometer cobaltosic oxide used as peroxide enzyme mimic for measuring concentration of hydrogen peroxide |
| CN106935869A (en) * | 2017-03-31 | 2017-07-07 | 扬州大学 | Three-dimensional manometer cobaltosic oxide, preparation method and application |
| CN106935869B (en) * | 2017-03-31 | 2019-04-19 | 扬州大学 | Three-dimensional manometer cobaltosic oxide, preparation method and application |
| CN107941882A (en) * | 2017-11-27 | 2018-04-20 | 海南师范大学 | A kind of preparation and application research of electrochemica biological sensor part based on cobaltosic oxide and horseradish peroxidase modified electrode |
| CN115893509A (en) * | 2022-11-04 | 2023-04-04 | 洛阳理工学院 | Preparation method of cobaltosic oxide/nitrogen-doped carbon composite material for lithium ion battery cathode material |
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