CN204359742U - A kind of sensitive membrane and the screen printing electrode containing this sensitive membrane - Google Patents
A kind of sensitive membrane and the screen printing electrode containing this sensitive membrane Download PDFInfo
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- CN204359742U CN204359742U CN201420849197.1U CN201420849197U CN204359742U CN 204359742 U CN204359742 U CN 204359742U CN 201420849197 U CN201420849197 U CN 201420849197U CN 204359742 U CN204359742 U CN 204359742U
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Abstract
The utility model provides a kind of sensitive membrane and the screen printing electrode containing this sensitive membrane, and this screen printing electrode comprises electrode base sheet, and this electrode base sheet is printed with working electrode, and the surface of described working electrode scribbles one deck sensitive membrane; Described sensitive membrane is made up of carbon nanotube layer, nano oxidized zinc layers and graphene layer successively; This screen printing electrode has that selectivity is good, expense is low, measure the features such as quick, easy to operate, to separate the problem that clinical, community hospital or family realize the dense fast monitored of blood medicine.
Description
Technical field
The utility model relates to a kind of electrode, particularly a kind of screen printing electrode containing sensitive membrane.
Background technology
The health and lives activity of the materials such as trace element, aminophylline, vitamin and people is closely related, and they take part in most metabolic processes in human body; And the method for measurement of concentration of these materials is mainly spectroscopic methodology, high performance liquid chromatography etc., method is loaded down with trivial details, large, the consuming time length of sample requirement amount, substantially cannot be used for clinical diagnosis, also cannot popularize and independently measure for community hospital and family.Therefore, develop high sensitivity, the electrochemical sensor of mensuration many kinds of substance of high selectivity becomes problem demanding prompt solution.
Electricity analytical method, comprises electrode detection method, has the direct-detection that the advantage such as highly sensitive, selectivity good, and the response time is short is widely used in this type of living matter.The electrode being applied to the mensuration of the materials such as aminophylline at present has many, but it mostly is column glass-carbon electrode, and cost is high, needs again to modify after repeatedly using, and faces the technical matterss such as poor reproducibility, sensitivity is low.
For improving sensitivity and the selectivity of electrode, main at electrode face finish multi-walled carbon nano-tubes compound, collaurum and nafion etc., after above-mentioned amendment, the sensitivity of obtained electrode when measuring the materials such as trace element, aminophylline is still undesirable, and poor stability.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides one to stablize preservation, highly sensitive screen printing electrode.
The concrete technical scheme of the utility model is as follows:
The utility model provides a kind of sensitive membrane, and this sensitive membrane is coated in working electrode surface, and this sensitive membrane is made up of carbon nanotube layer, nano oxidized zinc layers and graphene layer successively.
The sensitive membrane be made up of carbon nanotube layer, nano oxidized zinc layers and graphene layer, there is good chemical stability, electric conductivity and high physical strength, the transmission of electronics in electrochemical reaction can be promoted, improve the response current on electrode, improve the microenvironment of electrode surface.
Preferably described carbon nanotube layer is multi-wall carbon nano-tube tube layer.Multi-walled carbon nano-tubes belongs to high intensity carbon fiber material, it is made sensitive membrane with graphene layer together with nano oxidized zinc layers, it not only can strengthen conduction and the heat conductivility of sensitive membrane, make it have well corrosion-resistant and heat resistance, and the sensitive membrane of preparation can be made to have good intensity, elasticity and fatigue resistence and isotropy, significantly improve work efficiency and the sensitivity of working electrode.
The utility model provides a kind of screen printing electrode on the other hand, and this screen printing electrode comprises electrode base sheet, and this electrode base sheet is printed with working electrode, and the surface of described working electrode scribbles one deck sensitive membrane; This sensitive membrane is made up of carbon nanotube layer, nano oxidized zinc layers and graphene layer successively.
The sensitive membrane that screen printing electrode of the present utility model is made up of carbon nanotube layer, nano oxidized zinc layers and graphene layer by being coated with one deck on the working electrode (s, not only can accelerate electron transmission and catalytic activity further, improve the response sensitivity of screen printing electrode to materials such as trace element, aminophyllines, more be conducive to the stable preservation of electrode, reduce the individual difference between electrode, thus realize the fast monitored that clinical, community hospital or family realize blood concentration.The utility model is solving screen printing electrode stability, sensitivity and optionally on basis, and the screen printing electrode simultaneously developed can be used for measuring the materials such as trace element, vitamin, amino acid, aminophylline, digoxin, monoamine neurotransmitter, uric acid.
Further improvement, described electrode base sheet is also printed with contrast electrode and auxiliary electrode.
In order to improve sensitivity further, described working electrode is carbon electrode, and described contrast electrode is Ag/AgCl electrode, and described auxiliary electrode is gold electrode; Each electrode has been connected respectively a contact conductor.
Further improvement, described contact conductor is silver-colored guide rail.
Described contact conductor is coated with insulation course.
The screen printing electrode that the utility model provides is by be combineding with each other carbon nano-tube, nano zine oxide, Graphene, preparation sensitive membrane, applied on the working electrode (s, improve screen printing electrode sensitivity, and this screen printing electrode has, and selectivity is good, expense is low, measure the features such as quick, easy to operate, to separate the problem that clinical, community hospital or family realize the dense fast monitored of blood medicine.
Accompanying drawing explanation
Fig. 1 is the structural representation of the screen printing electrode of embodiment 1;
Fig. 2 is the structural representation of the screen printing electrode of embodiment 2;
Fig. 3 is the selective response figure of screen printing electrode to aminophylline in aminophylline injection.
Embodiment
Embodiment 1
The utility model provides a kind of screen printing electrode, and as shown in Figure 1, this screen printing electrode comprises electrode base sheet 1, and this electrode base sheet 1 is printed with working electrode 2, and the surface of described working electrode 2 scribbles one deck sensitive membrane; Described sensitive membrane is made up of carbon nanotube layer 3, nano oxidized zinc layers 4 and graphene layer 5 successively.
Embodiment 2
The utility model provides a kind of screen printing electrode, and as shown in Figure 2, this screen printing electrode comprises electrode base sheet 1, this electrode base sheet 1 is printed with working electrode 2, contrast electrode 6 and auxiliary electrode 7; The surface of described working electrode 2 scribbles one deck sensitive membrane; This sensitive membrane is made up of multi-wall carbon nano-tube tube layer 3, nano oxidized zinc layers 4 and graphene layer 5 successively; Described working electrode 2 is carbon electrode, and contrast electrode 6 is Ag/AgCl electrode, and auxiliary electrode 7 is gold electrode; Each electrode has been connected respectively a contact conductor 8, and this contact conductor 8 is silver-colored guide rail, contact conductor 8 is coated with insulation course 9.
Embodiment 3
Screen printing electrode of the present utility model is for measuring the aminophylline in blood sample
Utilize the aminophylline in the screen printing electrode mensuration blood sample of embodiment 2.In certain pH physiological buffer, aminophylline optionally can arrive the sensing unit of screen printing electrode by layered composite sensitive membrane structure.The sensitive membrane structure of this product invention has electronic catalytic performance and selective enrichment effect to aminophylline, achieves the mensuration of the highly sensitive high selectivity of aminophylline.
Condition determination: the Tri s-HCl damping fluid (pH7.0) measuring medium 0.05mol/L, enrichment time is 3 minutes.
Assay method: 1. cyclic voltammetry, electric potential scanning scope 0 ~ 1.3V, sweep velocity 100mv/s; 2. square wave voltammetry, electric potential scanning scope 0 ~ 1.3V, optimum configurations: square wave amplitude 0.025V; Square wave frequency: 20Hz; Burst length 40ms, current potential increment is 0.006V.Response measurement result as shown in Figure 3.
The above embodiment is only that preferred implementation of the present utility model is described; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.
Claims (7)
1. a sensitive membrane, described sensitive membrane is coated in working electrode (2) surface, and it is characterized in that, described sensitive membrane is made up of carbon nanotube layer (3), nano oxidized zinc layers (4) and graphene layer (5) successively.
2. sensitive membrane as claimed in claim 1, it is characterized in that, described carbon nanotube layer (3) is multi-wall carbon nano-tube tube layer.
3. a screen printing electrode, comprise electrode base sheet (1), it is characterized in that, described electrode base sheet (1) is printed with working electrode (2), the surface of described working electrode (2) scribbles the sensitive membrane described in one deck claim 1 or 2.
4. screen printing electrode as claimed in claim 3, is characterized in that, described electrode base sheet (1) is also printed with contrast electrode (6) and auxiliary electrode (7).
5. screen printing electrode as claimed in claim 4, it is characterized in that, described working electrode (2) is carbon electrode, and described contrast electrode (6) is Ag/AgCl electrode, and described auxiliary electrode (7) is gold electrode; Each electrode has been connected respectively a contact conductor (8).
6. screen printing electrode as claimed in claim 5, it is characterized in that, described contact conductor (8) is silver-colored guide rail.
7. screen printing electrode as claimed in claim 5, is characterized in that, described contact conductor (8) is coated with insulation course (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420849197.1U CN204359742U (en) | 2014-12-26 | 2014-12-26 | A kind of sensitive membrane and the screen printing electrode containing this sensitive membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420849197.1U CN204359742U (en) | 2014-12-26 | 2014-12-26 | A kind of sensitive membrane and the screen printing electrode containing this sensitive membrane |
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| Publication Number | Publication Date |
|---|---|
| CN204359742U true CN204359742U (en) | 2015-05-27 |
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| CN201420849197.1U Active CN204359742U (en) | 2014-12-26 | 2014-12-26 | A kind of sensitive membrane and the screen printing electrode containing this sensitive membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308189A (en) * | 2019-06-28 | 2019-10-08 | 湖北科技学院 | A kind of Screen-printed electrochemical biosensor and its application for mercury ion detecting |
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2014
- 2014-12-26 CN CN201420849197.1U patent/CN204359742U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308189A (en) * | 2019-06-28 | 2019-10-08 | 湖北科技学院 | A kind of Screen-printed electrochemical biosensor and its application for mercury ion detecting |
| CN110308189B (en) * | 2019-06-28 | 2024-04-16 | 湖北科技学院 | Silk-screen printing electrochemical sensor for mercury ion detection and application thereof |
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