CN105044175A - Preparation method of electrochemical sensor based on carbon-nitrogen-doped nickel oxide microsphere - Google Patents
Preparation method of electrochemical sensor based on carbon-nitrogen-doped nickel oxide microsphere Download PDFInfo
- Publication number
- CN105044175A CN105044175A CN201510412377.2A CN201510412377A CN105044175A CN 105044175 A CN105044175 A CN 105044175A CN 201510412377 A CN201510412377 A CN 201510412377A CN 105044175 A CN105044175 A CN 105044175A
- Authority
- CN
- China
- Prior art keywords
- nickel oxide
- preparation
- electrochemical sensor
- carbon
- electrode
- 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.)
- Granted
Links
Landscapes
- Inert Electrodes (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Abstract
The invention discloses an electrochemical sensor based on a carbon-nitrogen-doped nickel oxide microsphere electrode. The electrochemical sensor is used for detecting hydrogen peroxide. In the invention, the carbon-nitrogen-doped nickel oxide microsphere composite is prepared by adopting a di-block polymer containing carbon and nitrogen atoms and nickel hydroxide and is used for modifying a glassy carbon electrode. The prepared electrode has quite high electrocatalytic activity for hydrogen peroxide. The carbon and nitrogen elements act on nickel oxide to enhance the electrocatalytic activity of the carbon-nitrogen-doped nickel oxide microsphere composite for hydrogen peroxide. The invention relates to the electrochemical sensor, which is high in sensitivity of detecting hydrogen peroxide, short in response time, wide in detection range, and low in detection limit. The electrochemical sensor has quite excellent stability and interference resistance.
Description
Technical field
The present invention relates to electrochemical sensor field, particularly relate to a kind of preparation method mixing nickel oxide microballoon electrochemical sensor based on carbon nitrogen.
Background technology
Hydrogen peroxide plays very important role in daily life, such as generally adopts hydrogen peroxide to food sterilization, sterilization etc. in food production processing industry.But the hydrogen peroxide of high residue content has serious consequences to people, such as, people is made to vomit, the harm such as paralysis.There are clear and definite regulation and requirement in the content country of material residual hydrogen peroxide.Hydrogen peroxide is also the product of cell metabolism in addition, if the excessive meeting of hydrogen peroxide causes multiple organ dysfunction abnormal in human body, affects health.Therefore, the content by measuring human body hydrogen peroxide on clinical medicine makes valuable diagnosis to numerous disease.As can be seen here, detect particularly important to the analysis of hydrogen peroxide.The detection method of conventional hydrogen peroxide, handles loaded down with trivial details, testing complex and the shortcoming such as expensive as these detection methods such as chromatography, analysis by titration and spectroscopic methodology have.Electrochemical method has fast, stablize, highly sensitive advantage is for the detection of hydrogen peroxide.And now hydrogen peroxide electrochemical sensor great majority biological membrane, Conductive inorganic thing fix biology enzyme modified electrode to hydrogen peroxide and carry out analysis detection, as horseradish oxidase, glucose oxidase, hemoglobinase etc.But biology enzyme easy in inactivation, structure non-directional, affect the shortcomings such as very large and expense is high by the potential of hydrogen of environment and temperature, make without enzyme electrochemical sensor concerned.
Transition series metal oxide is subject to extensive concern owing to having the advantages such as excellent stability and high electrocatalytic active in electrochemical sensor field.Especially nickel oxide has the wide and high electrocatalysis of raw material sources and stability is often applied to catalyzer, battery electrode, sensor field.Theoretical research shows carbon, nitrogen-doping nickel oxide composite material has higher electro catalytic activity than unadulterated nickel oxide.Although synthesis diblock copolymer is very convenient at present, diblock copolymer is applied in carbon, N doping nickel oxide composite material is not also reported.So adopt diblock copolymer to prepare carbon, N doping nickel oxide microballoon compound substance be applied to hydrogen peroxide electrochemical sensor and have very important using value.
Summary of the invention
The object of the present invention is to provide a kind of preparation method mixing the electrochemical sensor of nickel oxide microballoon based on carbon nitrogen detected for hydrogen peroxide.
Technical scheme of the present invention is:
Mix a preparation method for the electrochemical sensor of nickel oxide microballoon based on carbon nitrogen, comprise the steps:
(1) preparation of nickel hydroxide solution: by ethylene glycol and polyglycol mix and blend 60 ~ 120min, adds nickel nitrate solution under agitation successively, benzoic acid, sodium hydroxide solution stirs into mixed solution; The volume ratio of described ethylene glycol and polyglycol is 100:0.5 ~ 1.5, described nickel nitrate (Ni (NO
3)
26H
2o), the mass ratio of benzoic acid and NaOH is 10 ~ 24:4 ~ 6:3 ~ 5;
(2) preparation of nickel hydroxide microballoon: step (1) gained mixed solution is forwarded in band teflon-lined hydrothermal reaction kettle, 8-12h is reacted at 170 ~ 200 DEG C of temperature, reaction terminates rear cool to room temperature, again reaction solution is carried out centrifuging, separation is obtained solid sediment vacuum drying 8-12h at 100 ~ 150 DEG C, obtain nickel hydroxide microballoon;
(3) carbon nitrogen mixes the preparation of nickel oxide microballoon: by step (2) gained nickel hydroxide microballoon and appropriate diblock polymer AB ultrasonic disperse in N, in dinethylformamide solution, then solution is put into muffle furnace, obtain carbon nitrogen at 450 ~ 500 DEG C of temperature lower calcination 2 ~ 4h and mix nickel oxide microballoon;
(4) carbon nitrogen mixes the preparation of nickel oxide microballoon electrode: glass-carbon electrode is carried out polishing grinding with the alpha-alumina powder of 0.05 μm and 0.03 μm respectively on chamois leather, then ultrasonic cleaning is carried out with salpeter solution, absolute ethyl alcohol and deionized water successively, step (3) gained carbon nitrogen is mixed nickel oxide microballoon ultrasonic disperse in aqueous solution, get 3 ~ 7 μ L carbon nitrogen to mix nickel oxide microballoon and hang dispersant liquid drop and be added on the glass-carbon electrode handled well, obtain carbon nitrogen after natural drying and mix nickel oxide microballoon electrode; It is 5 ~ 8g/L that described carbon nitrogen mixes nickel oxide microballoon dispersion liquid concentration;
(5) preparation of electrochemical sensor: with step (4) gained modified electrode for working electrode, builds electrochemical sensor.
Further, the diblock polymer AB of described step (3), its general formula is:
In formula, R represents amido, is preferably N (CH
3)
2or N (CH
2cH
3)
2.
Adopt electrochemical sensor prepared by above-mentioned preparation method.
The application of the electrochemical sensor adopting above-mentioned preparation method to prepare in hydrogen peroxide detects.
Beneficial effect of the present invention is:
Electrochemical sensor of the present invention, is applied to the preparation of carbon, N doping nickel oxide microballoon compound substance by the segmented copolymer of carbon containing and nitrogen element.Carbon, N doping nickel oxide microballoon compound substance have higher electro catalytic activity than unadulterated nickel oxide, show that it has stronger electrochemical response signal to hydrogen peroxide.The detection of electrochemical sensor of the present invention to hydrogen peroxide has the sensing range of non-constant width and low detectability, and response is fast, and has good stability, repeatability and antijamming capability.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of the nickel hydroxide microballoon that embodiment 1 obtains.
Fig. 2 is the scanning electron microscope (SEM) photograph that the obtained carbon nitrogen of embodiment 1 mixes nickel oxide microballoon compound substance.
Fig. 3 be the obtained carbon nitrogen of embodiment 1 mix nickel oxide microballoon compound substance can spectrogram.
Fig. 4 is that the obtained electrochemical sensor of embodiment 1 is to H
2o
2the different H that obtain of detection
2o
2the linear relationship chart of concentration and response current value.
Embodiment
For a better understanding of the present invention, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1
(1) preparation of nickel hydroxide solution: by 60.0mL ethylene glycol and 0.6mL PEG400 mix and blend 60min, adds 4.0mL nickel nitrate solution (concentration is 1.0mol/L) under agitation successively, 0.4g benzoic acid, 4.0mL sodium hydroxide solution (concentration is 2.0mol/L) is uniformly mixed uniformly solution.
(2) preparation of nickel hydroxide microballoon: the mixed solution described in step (1) is forwarded to 80mL and be with in teflon-lined hydrothermal reaction kettle, react 8h at 180 DEG C of temperature.Reaction terminates rear cool to room temperature, then reaction solution is carried out centrifuging, separation is obtained solid sediment vacuum drying 10h at 100 DEG C, obtains nickel hydroxide microballoon.
(3) carbon nitrogen mixes the preparation of nickel oxide microballoon: by step (2) gained nickel hydroxide microballoon with containing 0.05g diblock polymer AB solution ultrasonic disperse in N, in dinethylformamide solution, then dispersion soln is put into muffle furnace, obtain carbon nitrogen at 450 DEG C of temperature lower calcination 2h and mix nickel oxide microballoon.
(4) carbon nitrogen mixes the preparation of nickel oxide electrode: diameter 3mm glass-carbon electrode is carried out polishing grinding with the alpha-alumina powder of 0.05 μm and 0.03 μm respectively on chamois leather, then carries out ultrasonic cleaning with salpeter solution, absolute ethyl alcohol and deionized water successively.Carbon nitrogen prepared by step (3) is mixed nickel oxide microballoon ultrasonic disperse (concentration is 5.0g/L) in aqueous solution, get 5 μ L carbon nitrogen to mix nickel oxide microballoon and hang dispersant liquid drop and be added on the glass-carbon electrode handled well, obtain carbon nitrogen after natural drying and mix nickel oxide electrode.
(5) preparation of electrochemical sensor: mix nickel oxide glass-carbon electrode for working electrode with the carbon nitrogen prepared by step (4), platinum filament is auxiliary electrode, saturated calomel electrode is that contrast electrode builds electrochemical sensor.
Embodiment 2
(1) preparation of nickel hydroxide solution: by 60.0mL ethylene glycol and 0.8mL PEG400 mix and blend 100min, adds 6.0mL nickel nitrate solution (concentration is 1.0mol/L) under agitation successively, 0.45g benzoic acid, 4.0mL sodium hydroxide solution (concentration is 2.0mol/L) is uniformly mixed uniformly solution.
(2) preparation of nickel hydroxide microballoon: the mixed solution described in step (1) is forwarded to 80mL and be with in teflon-lined hydrothermal reaction kettle, react 10h at 190 DEG C of temperature.Reaction terminates rear cool to room temperature, then reaction solution is carried out centrifuging, separation is obtained solid sediment vacuum drying 10h at 120 DEG C, obtains nickel hydroxide microballoon.
(3) carbon nitrogen mixes the preparation of nickel oxide microballoon: by the nickel hydroxide microballoon described in step (2) with containing 0.05g diblock polymer AB solution ultrasonic disperse in N, in dinethylformamide solution, then dispersion soln is put into muffle furnace, obtain carbon nitrogen at 480 DEG C of temperature lower calcination 3h and mix nickel oxide microballoon.
(4) carbon nitrogen mixes the preparation of nickel oxide electrode: 3mm glass-carbon electrode is carried out polishing grinding with the alpha-alumina powder of 0.05 μm and 0.03 μm respectively on chamois leather, then carries out ultrasonic cleaning with salpeter solution, absolute ethyl alcohol and deionized water successively.Carbon nitrogen prepared by step (3) is mixed nickel oxide microballoon ultrasonic disperse (concentration is 5.5g/L) in aqueous solution, get 7 μ L carbon nitrogen to mix nickel oxide microballoon and hang dispersant liquid drop and be added on the glass-carbon electrode handled well, obtain carbon nitrogen after natural drying and mix nickel oxide electrode.
(5) preparation of electrochemical sensor: mix nickel oxide glass-carbon electrode for working electrode with the carbon nitrogen prepared by step (4), platinum filament is auxiliary electrode, saturated calomel electrode is that contrast electrode builds electrochemical sensor.
Embodiment 3
(1) preparation of nickel hydroxide solution: by 60.0mL ethylene glycol and 0.9mL PEG400 mix and blend 100min, adds 8.0mL nickel nitrate solution (concentration is 1.0mol/L) under agitation successively, 0.4g benzoic acid, 5.0mL sodium hydroxide solution (concentration is 2.0mol/L) is uniformly mixed uniformly solution.
(2) preparation of nickel hydroxide microballoon: the mixed solution described in step (1) is forwarded to 80mL and be with in teflon-lined hydrothermal reaction kettle, react 10h at 170 DEG C of temperature.Reaction terminates rear cool to room temperature, then reaction solution is carried out centrifuging, separation is obtained solid sediment vacuum drying 12h at 120 DEG C, obtains nickel hydroxide microballoon.
(3) carbon nitrogen mixes the preparation of nickel oxide microballoon: by the nickel hydroxide microballoon described in step (2) with containing 0.05g diblock polymer AB solution ultrasonic disperse in N, in dinethylformamide solution, then dispersion soln is put into muffle furnace, obtain carbon nitrogen at 500 DEG C of temperature lower calcination 3h and mix nickel oxide microballoon.
(4) carbon nitrogen mixes the preparation of nickel oxide electrode: 3mm glass-carbon electrode is carried out polishing grinding with the alpha-alumina powder of 0.05 μm and 0.03 μm respectively on chamois leather, then carries out ultrasonic cleaning with salpeter solution, absolute ethyl alcohol and deionized water successively.Carbon nitrogen prepared by step (3) is mixed nickel oxide microballoon ultrasonic disperse (concentration is 8.0g/L) in aqueous solution, get 6 μ L carbon nitrogen to mix nickel oxide microballoon and hang dispersant liquid drop and be added on the glass-carbon electrode handled well, obtain carbon nitrogen after natural drying and mix nickel oxide electrode.
(5) preparation of electrochemical sensor: mix nickel oxide glass-carbon electrode for working electrode with the carbon nitrogen prepared by step (4), platinum filament is auxiliary electrode, saturated calomel electrode is that contrast electrode builds electrochemical sensor.
Claims (5)
1. mix a preparation method for the electrochemical sensor of nickel oxide microballoon based on carbon nitrogen, it is characterized in that comprising the steps:
(1) preparation of nickel hydroxide solution: by ethylene glycol and polyglycol mix and blend 60 ~ 120min, add nickel nitrate solution under agitation successively, benzoic acid, sodium hydroxide solution stir into mixed solution, the volume ratio of described ethylene glycol and polyglycol is 100:0.5 ~ 1.5, and the mass ratio of described nickel nitrate and benzoic acid and NaOH is 10 ~ 24:4 ~ 6:3 ~ 5;
(2) preparation of nickel hydroxide microballoon: step (1) gained mixed solution is forwarded in hydrothermal reaction kettle, 8-12h is reacted at 170 ~ 200 DEG C of temperature, reaction terminates rear cool to room temperature, again reaction solution is carried out centrifuging, separation is obtained solid sediment vacuum drying 8-12h at 100 ~ 150 DEG C, obtain nickel hydroxide microballoon;
(3) carbon nitrogen mixes the preparation of nickel oxide microballoon: by step (2) gained nickel hydroxide microballoon and appropriate diblock polymer AB ultrasonic disperse in N, in dinethylformamide solution, then solution is put into muffle furnace, obtain carbon nitrogen at 450 ~ 500 DEG C of temperature lower calcination 2 ~ 4h and mix nickel oxide microballoon;
(4) carbon nitrogen mixes the preparation of nickel oxide microballoon electrode: glass-carbon electrode is carried out polishing grinding with the alpha-alumina powder of 0.05 μm and 0.03 μm respectively on chamois leather, then carries out ultrasonic cleaning with salpeter solution, absolute ethyl alcohol and deionized water successively.Step (3) gained carbon nitrogen is mixed nickel oxide microballoon ultrasonic disperse in aqueous solution, gets 3 ~ 7 μ L carbon nitrogen and mix nickel oxide microballoon and hang dispersant liquid drop and be added on the glass-carbon electrode handled well, obtain carbon nitrogen after natural drying and mix nickel oxide microballoon electrode;
(5) preparation of electrochemical sensor: with step (4) the electrode obtained for working electrode, build the electrochemical sensor mixing nickel oxide microballoon based on carbon nitrogen.
2. the preparation method of electrochemical sensor according to claim 1, is characterized in that: the diblock polymer AB of described step (3), and its general formula is:
In formula, R represents amido.
3. the preparation method of electrochemical sensor according to claim 1 and 2, is characterized in that: the concentration that described carbon nitrogen mixes nickel oxide microballoon dispersion liquid is 5 ~ 8g/L.
4. electrochemical sensor prepared by the preparation method described in any one of claims 1 to 3.
5. electrochemical sensor prepared by the preparation method described in any one of the claims 1 to 3 application in hydrogen peroxide detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412377.2A CN105044175B (en) | 2015-07-14 | 2015-07-14 | A kind of preparation method for the electrochemical sensor that nickel oxide microballoon is mixed based on carbon nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510412377.2A CN105044175B (en) | 2015-07-14 | 2015-07-14 | A kind of preparation method for the electrochemical sensor that nickel oxide microballoon is mixed based on carbon nitrogen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105044175A true CN105044175A (en) | 2015-11-11 |
| CN105044175B CN105044175B (en) | 2018-01-23 |
Family
ID=54450885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510412377.2A Expired - Fee Related CN105044175B (en) | 2015-07-14 | 2015-07-14 | A kind of preparation method for the electrochemical sensor that nickel oxide microballoon is mixed based on carbon nitrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105044175B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678133A (en) * | 2019-01-14 | 2019-04-26 | 桂林电子科技大学 | A kind of C-base composte material and its preparation method and application of nickel oxide doping |
| CN109828014A (en) * | 2018-12-07 | 2019-05-31 | 云南大学 | A kind of pair of hydrogen peroxide has the preparation method of the composite material of the titanium alloy substrate of excellent detection performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126762A (en) * | 2011-04-28 | 2011-07-20 | 北京化工大学 | Method for preparing NiO nano flowerlike microspheres with surface topography controllable |
| US20110198238A1 (en) * | 2010-02-18 | 2011-08-18 | Samsung Electronics Co., Ltd. | Electrode for electrochemical water treatment, method of manufacturing the same, method of treating water using the electrode, and device including the electrode for electrochemical water treatment |
| WO2014081387A1 (en) * | 2012-11-23 | 2014-05-30 | Nanyang Technological University | Composite film and method of forming the same |
| CN104030371A (en) * | 2014-06-08 | 2014-09-10 | 吕仁江 | Method for synthesizing NiO microsphere consisting of mesoporous sheet structures by soft template process |
-
2015
- 2015-07-14 CN CN201510412377.2A patent/CN105044175B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110198238A1 (en) * | 2010-02-18 | 2011-08-18 | Samsung Electronics Co., Ltd. | Electrode for electrochemical water treatment, method of manufacturing the same, method of treating water using the electrode, and device including the electrode for electrochemical water treatment |
| CN102126762A (en) * | 2011-04-28 | 2011-07-20 | 北京化工大学 | Method for preparing NiO nano flowerlike microspheres with surface topography controllable |
| WO2014081387A1 (en) * | 2012-11-23 | 2014-05-30 | Nanyang Technological University | Composite film and method of forming the same |
| CN104030371A (en) * | 2014-06-08 | 2014-09-10 | 吕仁江 | Method for synthesizing NiO microsphere consisting of mesoporous sheet structures by soft template process |
Non-Patent Citations (1)
| Title |
|---|
| 汤帅: "基于二嵌段聚合物复合材料的电化学传感器研究", 《中国知网》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828014A (en) * | 2018-12-07 | 2019-05-31 | 云南大学 | A kind of pair of hydrogen peroxide has the preparation method of the composite material of the titanium alloy substrate of excellent detection performance |
| CN109828014B (en) * | 2018-12-07 | 2021-04-20 | 云南大学 | Preparation method of composite material of titanium alloy substrate with excellent hydrogen peroxide detection performance |
| CN109678133A (en) * | 2019-01-14 | 2019-04-26 | 桂林电子科技大学 | A kind of C-base composte material and its preparation method and application of nickel oxide doping |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105044175B (en) | 2018-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Asif et al. | Metal oxide intercalated layered double hydroxide nanosphere: with enhanced electrocatalyic activity towards H2O2 for biological applications | |
| Karimi-Maleh et al. | A novel voltammetric sensor employing zinc oxide nanoparticles and a new ferrocene-derivative modified carbon paste electrode for determination of captopril in drug samples | |
| CN106226382B (en) | Nano porous copper/Cu (OH)2Nano-wire array sensor electrode material and preparation method thereof | |
| Qu et al. | Nanoflower-like CoS-decorated 3D porous carbon skeleton derived from rose for a high performance nonenzymatic glucose sensor | |
| Chen et al. | A novel ball-in-ball hollow NiCo 2 S 4 sphere based sensitive and selective nonenzymatic glucose sensor | |
| Zheng et al. | Carbon nanohorns enhanced electrochemical properties of Cu-based metal organic framework for ultrasensitive serum glucose sensing | |
| CN108007998B (en) | Nickel oxide non-enzymatic glucose electrochemical sensor | |
| Balasubramanian et al. | Ultrasensitive non-enzymatic electrochemical sensing of glucose in noninvasive samples using interconnected nanosheets-like NiMnO3 as a promising electrocatalyst | |
| CN106770562B (en) | A kind of CoS2/ nitrogen-doped graphene composite material constructs application of the electrochemical sensor in glucose electrochemical analysis | |
| Karimi-Maleh et al. | Electrocatalytic determination of glutathione using multiwall carbon nanotubes paste electrode as a sensor and isoprenaline as a mediator | |
| Salimi et al. | Electrooxidation of insulin at silicon carbide nanoparticles modified glassy carbon electrode | |
| Zhao et al. | NiCo2O4 nanorods decorated MoS2 nanosheets synthesized from deep eutectic solvents and their application for electrochemical sensing of glucose in red wine and honey | |
| Atta et al. | The electrochemistry and determination of some neurotransmitters at SrPdO3 modified graphite electrode | |
| Salarizadeh et al. | NiO–MoO3 nanocomposite: A sensitive non-enzymatic sensor for glucose and urea monitoring | |
| CN101598697A (en) | Nickel in the titanium substrate-nickel-aluminium-hydrotalcite nano-chip arrays glucose sensor electrode without enzyme | |
| US11733199B2 (en) | Fabrication method of enzyme-free glucose sensor and use of enzyme-free glucose sensor fabricated by the same | |
| CN109778172A (en) | One kind is for non-enzymatic glucose sensor composite nano materials and preparation method thereof | |
| Salmanipour et al. | Voltammetric behavior of a multi-walled carbon nanotube modified electrode-ferrocene electrocatalyst system as a sensor for determination of methyldopa in the presence of folic acid | |
| CN111044590A (en) | CuNi-MOF nano-material modified electrode and application thereof | |
| Casimero et al. | Sensor systems for bacterial reactors: A new flavin-phenol composite film for the in situ voltammetric measurement of pH | |
| Ma et al. | A controllable synthesis of hollow pumpkin-like CuO/Cu 2 O composites for ultrasensitive non-enzymatic glucose and hydrogen peroxide biosensors | |
| CN107315043B (en) | Nickel metal organic framework nano material and its application | |
| Wang et al. | Electrochemical study of hydrogen peroxide detection on MnO2 micromaterials | |
| CN105044175A (en) | Preparation method of electrochemical sensor based on carbon-nitrogen-doped nickel oxide microsphere | |
| CN102735721B (en) | Detection method for hydrogen peroxide concentration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 Termination date: 20200714 |