CN107024510A - A kind of graphene test paper and its preparation and the liquid analysis method based on the test paper - Google Patents
A kind of graphene test paper and its preparation and the liquid analysis method based on the test paper Download PDFInfo
- Publication number
- CN107024510A CN107024510A CN201710364370.7A CN201710364370A CN107024510A CN 107024510 A CN107024510 A CN 107024510A CN 201710364370 A CN201710364370 A CN 201710364370A CN 107024510 A CN107024510 A CN 107024510A
- Authority
- CN
- China
- Prior art keywords
- graphene
- test paper
- synusia
- liquid
- film substrate
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
A kind of graphene test paper and its preparation and the liquid analysis method based on the test paper, belong to liquid sensing element and fluid analysis technical field.The test paper contains film substrate, the membrane structure accumulated by graphene synusia and contact electrode, and the membrane structure is combined closely with film substrate, and auxiliary film former and chemical sniff molecule are attached with graphene synusia.Its preparation method is that graphene synusia, auxiliary film former and chemical sniff molecule are scattered in solvent, graphene conductive ink is made, then the graphene synusia in graphene conductive ink is deposited on film substrate, contact electrode is set afterwards, the final graphene test paper being made with good strength, flexible and chemosensitivity.Present invention also offers the method that fluid analysis is carried out using the test paper, the liquid analysis method can be used for analysis organic solvent, salting liquid, the plurality of liquid such as all kinds of drinks, with sample requirements are few, detection time is short, instrument and the low a variety of advantages of reagent manufacturing cost.
Description
Technical field
The present invention relates to a kind of graphene test paper and preparation method thereof, and the fluid analysis system based on the graphene test paper
System and liquid analysis method, belong to liquid sensing element and its preparing technical field, while being related to fluid analysis detection technique.
Background technology
In liquid field of sensing technologies, those skilled in the art has been developed for a variety of detections for fluid analysis
Method.Traditional chemical analysis method (such as Kjeldahl's method, all kinds of chemistry titrations) can be realized targetedly quantitative or qualitative
Analysis, but can not be portable and method is extremely complex.The single mass detector such as instrument such as surface tension tester, viscosity tester
Device can realize quick detection, but application is relatively limited.Large-scale precision instrument such as liquid chromatograph, optical fiber detector or
The instruments such as infrared spectrum need to put into substantial amounts of instrument reagent cost, staff training cost, and testing conditions require higher, it is difficult to
Accomplish flexibility, easily it is portable.Artificial electron's tongue liquid analysis system (such as based on biomembrane or field-effect transistor electronic tongues)
It can realize that composite fluid is analyzed, but due to structural factor flexibility relatively difficult to achieve, testing conditions are higher.
Therefore, it is necessary to which it is strong and easily portable, easy of integration for flexible wearable equipment to provide a kind of simple in construction, detectability
Liquid sensing element, this liquid sensing element can be carried out for liquid it is quick, simple and it is effective distinguish, to meet
Prepare the application requirement for the flexible wearable equipment that can be monitored in real time.The easy portable liquid physical examination examining system is in food security, medicine
The fields such as delivering, water body environment analysis have important application value.
The content of the invention
It is an object of the invention to provide a kind of graphene test paper and preparation method, while also providing a kind of based on the graphene
The liquid analysis method of test paper.
Technical scheme is as follows：
A kind of graphene test paper, it is characterised in that：The film knot that the test paper is accumulated by film substrate, by graphene synusia
Structure and contact electrode are constituted, and the membrane structure is combined closely with film substrate；The contact electrode is arranged on the graphene
In synusia build-up film structure；Auxiliary film former and chemical sniff molecule are attached with graphene synusia.
In above-mentioned technical proposal, described auxiliary film former is sodium carboxymethylcellulose or ethyl cellulose.The chemistry
Sniff molecule is kayexalate or manganese dioxide nano particle.
The thickness of the membrane structure of graphene synusia accumulation of the present invention is 5-1000 microns.
Preferably, the contact electrode is distributed in the edge of the membrane structure of the graphene synusia accumulation.
A kind of preparation method for graphene test paper that the present invention is provided, it comprises the following steps：
1) by graphene synusia, auxiliary film former and chemical sniff molecule be scattered in water orLow-carbon alcoholsIn solvent, stone is made
Black alkene conductive ink, the wherein concentration of graphene are 0.001-0.1mg/mL, and the mass ratio of auxiliary film former and graphene is 10:
1-1:10, the mass ratio of chemical sniff molecule and graphene is 10:1-1:10；
2) the graphene synusia in graphene conductive ink is deposited in film substrate by vacuum filtration or filter method,
Constitute the membrane structure of graphene synusia accumulation；
3) the graphene synusia build-up film structure and film substrate are cut out, and using coating conductive silver glue, conductive carbon paste
Or the method formation contact electrode of evaporation metal.
In the method for the invention, the material of described film substrate is nylon, glass fibre, polytetrafluoroethylene (PTFE), polypropylene,
Cellulose acetate, polyether sulfone, Kynoar or polypropylene fibre.
Present invention also offers a kind of liquid analysis method based on the graphene test paper, it is characterised in that the side
Method comprises the following steps：
1) graphene test paper is placed on warm table, and contact electrode is passed through into signal circuit and signal acquisition mould
Block is connected；
2) start warm table, and control heating platen temperature in the range of -30-200 DEG C；
3) testing liquid is added dropwise on graphene test paper using liquid Dropping feeder, using signal acquisition module by graphite
The electrical signal of alkene test paper is transmitted to pattern recognition module by wired or wireless method；
4) pattern recognition module is analyzed and processed electrical signal, so as to obtain the floristic analysing knot to testing liquid
Really.
In the liquid analysis method of graphene test paper of the present invention, it is characterised in that described electrical signal is electricity
Pressure, electric current and resistance.The method that the pattern recognition module is analyzed and processed electrical signal using parameter extraction method, it is main into
Divide analytic approach or algorithm of support vector machine.
Technique effect of the present invention with advantages below and high-lighting：1. the present invention will have high-specific surface area, excellent lead
Electricity, the grapheme material of the capacity of heat transmission carry out structure design, and grapheme material is believed as chemical sensing material and electricity simultaneously
Number transport vehicle, constructs the graphene test paper with liquid sensing capabilities.The sensing layer of graphene test paper is graphene synusia
The graphene synusia build-up film structure formed with auxiliary film former, chemical sniff molecule in miillpore filter substrate.Sensing layer
The graphene test paper constituted with film substrate has good intensity and flexibility, and area, thickness, uniformity are controllable, with good
Chemical sensitisation performance.
2. those skilled in the art are prepared for good mechanical performance and chemical-sensitive using grapheme material as sensing material
Graphene test paper, graphene test paper electrical signal is classified by using algorithm, flexible liquid that can be portable is realized
Analysis system.The graphene test paper can be prepared quickly, in large quantity, manufacturing process low toxicity and relative inexpensiveness.Based on the stone
The liquid analysis system of black alkene test paper can be used for a variety of liquid such as analysis organic solvent, salting liquid, high polymeric solution, all kinds of drinks
Body.The fluid analysis detecting system have can be achieved multiple analysis, flexibility can portable, detection time short (being smaller than one minute),
Sample requirements few (being smaller than 3 microlitres), instrument and the low a variety of advantages of reagent manufacturing cost.To a certain extent, solution simultaneously
The precision instrument of fluid analysis of having determined is difficult to the problem of portable and portable equipment analyst coverage is limited.
Brief description of the drawings
Fig. 1 is the structural representation of graphene test paper described in the specific embodiment of the invention.
Fig. 2 is that the SEM microscopic sdIBM-2+2q.p.approach of graphene test paper cross section described in the specific embodiment of the invention shines
Piece.
Fig. 3 is the schematic diagram of the liquid analysis system based on graphene test paper described in the specific embodiment of the invention.
Fig. 4 is the quick liquid analysis system based on graphene test paper described in the specific embodiment of the invention for different salt
The electric response figure of solution.
Fig. 5 is the quick liquid analysis system based on graphene test paper described in the specific embodiment of the invention for different salt
The differentiation result figure of solution.
Fig. 6 is the quick liquid analysis system based on graphene test paper described in the specific embodiment of the invention for different drinks
The electric response figure of product.
Fig. 7 is the quick liquid analysis system based on graphene test paper described in the specific embodiment of the invention for different drinks
The differentiation result figure of product.
In figure：1- graphene test paper；2- fluid analysis modules；3- signal acquisition modules；4- pattern recognition modules；5- is to be measured
Liquid；11- graphene synusia build-up film structures；12- contact electrodes；13- film substrates；21- warm tables；22- Dropping feeders；
Embodiment
The present invention is described further with reference to the accompanying drawings and examples, so that those skilled in the art can be more preferable
Understanding.
There is provided a kind of graphene test paper according to the first aspect of the invention, it is characterised in that the graphene test paper contains
Film substrate 13 and the membrane structure 11 accumulated by graphene synusia and contact electrode 12, graphene synusia accumulation and
Into membrane structure 11 combined closely with the film substrate 13；It is thin that the contact electrode 12 is arranged on the graphene synusia accumulation
In membrane structure 11；Auxiliary film former and chemical sniff molecule are attached with graphene synusia.Described auxiliary film former is carboxylic
Sodium carboxymethylcellulose pyce or ethyl cellulose.The chemical sniff molecule is kayexalate or manganese dioxide nano particle.
The thickness of the membrane structure of the graphene synusia accumulation is 5-1000 microns.The contact electrode 12 is distributed in the stone
The edge of the membrane structure 11 of black alkene synusia accumulation.
According to the second aspect of the invention there is provided a kind of preparation method of graphene test paper, it comprises the following steps：
1) graphene synusia, auxiliary film former and chemical sniff molecule are scattered in water or low-carbon alcoholic solvent, stone is made
Black alkene conductive ink, the wherein concentration of graphene are 0.001-0.1mg/mL, and the mass ratio of auxiliary film former and graphene is 10:
1-1:10, the mass ratio of chemical sniff molecule and graphene is 10:1-1:10；
2) the graphene synusia in graphene conductive ink is deposited in film substrate by vacuum filtration or filter method,
Constitute the membrane structure of graphene synusia accumulation；
3) the graphene synusia build-up film structure and film substrate are cut out, and using coating conductive silver glue, conductive carbon paste
Or the method formation contact electrode of evaporation metal.
The material of described film substrate is nylon, glass fibre, polytetrafluoroethylene (PTFE), polypropylene, cellulose acetate, polyethers
Sulfone, Kynoar or polypropylene fibre.
According to the second aspect of the invention there is provided a kind of liquid analysis method based on graphene test paper, it is included such as
Lower step：
1) graphene test paper is placed on warm table 21, and contact electrode is passed through into signal circuit and signal acquisition
Module (3) is connected；
2) start warm table, and control heating platen temperature in the range of -30-200 DEG C；
3) testing liquid is added dropwise on graphene test paper using liquid Dropping feeder 22, will using signal acquisition module 3
The electrical signal of graphene test paper is transmitted to pattern recognition module by wired or wireless method；
4) pattern recognition module is analyzed and processed electrical signal, so as to obtain the floristic analysing result of testing liquid.
Described electrical signal is voltage, electric current and resistance.
The method that the pattern recognition module is analyzed and processed electrical signal uses parameter extraction method, principal component analysis
Method or algorithm of support vector machine.
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments does not limit this
The scope of invention.
The invention provides a kind of graphene test paper and preparation method thereof, and the fluid analysis based on the graphene test paper
System and liquid analysis method.
The invention provides a kind of graphene test paper, including graphene synusia build-up film structure 11, contact electrode
12nd, film substrate 13.The structural representation of the graphene test paper is as shown in Figure 1.The graphene build-up film structure 11 is by stone
Black alkene synusia is stacked and formed.Graphene synusia species may include graphene, redox graphene, individual layer, a small number of layers and many
Layer graphene.Can be with auxiliary film former and chemical sniff molecule on graphene synusia.Auxiliary film former is embodied in
Optimize the structure and morphology of graphene test paper, make that graphene test paper surface is uniform, roughness is low, with more preferable intensity.Chemistry is smelt
Visit sensitivity of the specific manifestation lifting graphene test paper to detection liquid of molecule.The contact electrode 12 is arranged on the graphite
In alkene build-up film structure 11, for constituting connecting path with signal acquisition module, monitoring current is introduced into graphene accumulation thin
In membrane structure.Position of the contact electrode in the graphene build-up film structure can be according to the situation of actual use
Change is adjusted, is arranged on the contact electrode of diverse location to adapt to different types of fluid analysis module 2.The film
Substrate 13 is used to carry the graphene build-up film structure 11 and contact electrode 12.Due to the graphene build-up film structure
Thinner thickness, may be unsuitable for being independently operated, the therefore film substrate 13 and the support of 11, graphene build-up film structure is made
With.Film substrate 13 can produce swelling behavior in the presence of testing liquid 5, and the electric property of influence graphene test paper 1 contributes to inspection
Survey testing liquid 5.Combined closely between film substrate 13 and graphene build-up film structure 11, and film substrate 13 has well soft
Property, therefore graphene test paper 1 has good flexibility.
The cross section microscopic sdIBM-2+2q.p.approach figure of the graphene build-up film structure 11 is as shown in Figure 2.Graphene build-up film knot
Structure 11 is located on film substrate 13, and graphene build-up film structure 11 has certain thickness, and its thickness is 5-1000 microns；Simultaneously
There is space between graphene synusia and synusia.
Present invention also offers the manufacture method of above-mentioned graphene test paper, including following steps：
Step 1, graphene synusia, auxiliary film former and chemical sniff molecule be scattered in water or low-carbon alcoholic solvent, made
Into graphene conductive ink, the wherein concentration of graphene is 0.001-0.1mg/mL, auxiliary film former and graphene mass ratio
For 10:1-1:10, the mass ratio of chemical sniff molecule and graphene is 10:1-1:10；Step 2, pass through vacuum filtration or filter
Graphene synusia in graphene conductive ink is deposited in film substrate by method, constitutes the film of graphene synusia accumulation
Structure；Step 3, cut out the graphene synusia build-up film structure and film substrate, and using coating conductive silver glue, conductive carbon paste
Or the method formation contact electrode of evaporation metal.
Those skilled in the art can carry out the thickness of appropriate adjustment graphene test paper according to the property of required detection liquid
The shape and structure of degree, size and film base material.Test paper size can for example be prepared for 1cm × 1cm, graphene layer thickness is
5 μm of nylon substrates graphene test paper, can also prepare test paper size for 1cm × 2cm, and graphene layer thickness is poly- the four of 20 μm
Fluoride-based bottom graphene test paper.The physical dimension and film base material of the present invention not to used graphene test paper
Limited.
In the step 1, graphene conductive ink is that graphene synusia is scattered in solvent, and graphene synusia can be with
Using redox graphene or other graphene synusia, solvent can use water or low-carbon alcohols.Graphene conductive ink
Process for dispersing is ultrasonic dispersion, paddling process or ball-milling method.The composition of graphene conductive ink can carry out appropriate adjustment.Such as
Can be containing some auxiliary film formers and chemical sniff molecule in graphene conductive ink, the pattern for optimizing graphene test paper
Structure and chemical sensitisation performance.For example, the composition of graphene conductive ink can be 0.1mg/mL graphene,
0.5mg/mL sodium carboxymethylcellulose, 0.1mg/mL kayexalate, solvent is water, passes through non-contact type ultrasonic
Broken instrument carries out 3 hours scattered.Again for example, the composition of graphene conductive ink can be 0.05mg/mL graphene,
0.01mg/mL ethyl cellulose, 0.01mg/mL manganese dioxide nano particle, solvent is ethanol, and 2 are carried out by ball-milling method
Hour it is scattered.By reasonably matching, the preferable graphene conductive ink of dispersed and stability can be prepared.
In the step 2, the miillpore filter of the different materials such as nylon, polytetrafluoroethylene (PTFE), cellulose acetate can be used
It is used as film substrate.The vavuum pump used is mechanical pump or water pump.The suction filtration pressure of assistant depositing graphene synusia be 0~
30MPa.The present invention is not limited film substrate material or suction filtration pressure limit, and those skilled in the art can be according to reality
Situation uses different appropriate methods.
, in an embodiment of the present invention, can be by the graphene build-up film structure and film base of formation in the step 3
Bottom carries out quickly self-defined cut out by cutter.The edge coating of graphene build-up film structure after described cut out is conductive
Elargol, or evaporation copper electrode can be set at edge.
The invention provides a kind of liquid analysis system based on graphene test paper, including graphene test paper, liquid
Analysis module, signal acquisition module and pattern recognition module.The structure of the liquid analysis system based on graphene test paper is shown
It is intended to as shown in Figure 3.Graphene test paper 1 is loaded in fluid analysis module 2.Warm table 21 in fluid analysis module 2 is by stone
Black alkene test paper 1 heats and graphene test paper 1 is in isoperibol, and temperature control is between -30-200 DEG C.Fluid analysis module
A certain amount of testing liquid 5 is added dropwise on graphene test paper 1 Dropping feeder 22 in 2.Signal acquisition module 3 is by graphene
The electrical signal that test paper 1 is produced is transmitted to pattern recognition module 4.Pattern recognition module 4 is by sorting algorithm by graphene test paper
Electrical signal analyzed and processed, obtain testing liquid floristic analysing result.
The quick liquid analysis system of graphene test paper of the present invention in the operating condition, is connected with graphene test paper
Monitoring current.Apply constant voltage, and the change of monitoring current in real time to graphene test paper, obtain the real-time of graphene test paper
Resistance change.When the graphene test paper 1 is contacted with testing liquid 5, the resistance value of graphene test paper will be produced with the time
Change, m- resistance curve is designated as the data of current detection liquid when corresponding.
Above is the liquid analysis system based on graphene test paper provided in the specific embodiment of the invention.The fluid analysis
System has sensitive response mechanism for different liquids, can be for a variety of different type liquid of detection.For example, can apply
In organic liquid analysis field, m- resistance curve when the unclarified liquid leaked by detecting obtains corresponding, to judge not clear liquid
The attribute of body, to implement suitable processing.For example, can apply to environment measuring field, by detect environment water when it is m-
Resistance curve, to judge whether water body goes wrong.
Fig. 4 is electric response of the liquid analysis system based on graphene test paper in the present embodiment for various salts
Figure, it is seen that graphene test paper resistance change caused by different liquids is different.X-axis is the time, and Y-axis is relative resistance value changes.
If the initial resistance of graphene test paper is R, the resistance of t graphene test paper is Rt, then the relative resistance value changes of t
For Δ R=(Rt-R0)/R0。
The electrical signal that signal acquisition module produces graphene test paper is transmitted to pattern by wirelessly or non-wirelessly method to be known
After other module, pattern recognition module is analyzed and processed to electrical signal.There are the analyzing and processing of electrical signal a variety of differences to have
Imitate algorithm, such as SVMs.For example, parameter extraction and principal component analysis are one kind of graphene test paper electrical signal
Analysis method.M- relative resistance curve carries out parameter extraction calculating during using Excel softwares pair, obtains half peak breadth, half-peak
The many kinds of parameters such as overall with, peak value, wavelength.Principal component analysis side is used to parameter group using Wolfram Mathematica softwares
Method carries out dimension-reduction treatment, and obtains dimensionality reduction parameter group and map.The electric signal of graphene test paper in Fig. 4 for various salts
After calculating processing of the response curve by parameter extraction and principal component analysis, the difference result figure of various salts is obtained, such as
Shown in Fig. 5.Different types of salting liquid can obtain effective distinguish by the liquid analysis system based on graphene test paper.
Liquid analysis system based on graphene test paper is equally applicable to distinguish a variety of different types of liquid, such as soft drink,
Pick-me-up etc..Fig. 6 is electricity of the quick liquid analysis system based on graphene test paper in the present embodiment for different drinks
Signal response diagram, the resistance change trend of graphene test paper caused by different drinks is different.Graphene test paper in Fig. 6 for
After calculating processing of the electrical signal response curve of different drinks by parameter extraction and principal component analysis, different drinks are obtained
Difference result figure, as shown in Figure 7.A variety of different types of drinks can be had by the liquid analysis system of graphene test paper
Distinguish and identification on effect ground.
Above is a kind of quick liquid analysis system and its manufacture method based on graphene test paper that the present invention is provided, with
On example to the present invention some specific embodiments be described in detail, but what deserves to be explained is, example above is only
In order to illustrate, the scope being not intended to be limiting of the invention.
Claims (10)
1. a kind of graphene test paper, it is characterised in that：The graphene test paper contains film substrate (13) and accumulated by graphene synusia
Membrane structure (11) and contact electrode (12), the membrane structure (11) of graphene synusia accumulation with it is described
Film substrate (13) is combined closely；The contact electrode (12) is arranged on the graphene synusia build-up film structure (11)；
Auxiliary film former and chemical sniff molecule are attached with graphene synusia.
2. a kind of graphene test paper according to claim 1, it is characterised in that described auxiliary film former is that carboxymethyl is fine
The plain sodium of dimension or ethyl cellulose.
3. graphene test paper according to claim 1, it is characterised in that the chemical sniff molecule is polystyrolsulfon acid
Sodium or manganese dioxide nano particle.
4. a kind of graphene test paper according to claim 1, it is characterised in that it is thin that the graphene synusia is accumulated
The thickness of membrane structure is 5~1000 microns.
5. a kind of graphene test paper according to Claims 1 to 4 any claim, it is characterised in that the contact electricity
Pole (12) is distributed in the edge of the membrane structure (11) of the graphene synusia accumulation.
6. a kind of preparation method of graphene test paper as claimed in claim 1, it comprises the following steps：
1) graphene synusia, auxiliary film former and chemical sniff molecule are scattered in water or low-carbon alcoholic solvent, graphene is made
The concentration of conductive ink, wherein graphene is 0.001~0.1mg/mL, and the mass ratio of auxiliary film former and graphene is 10:1~
1:10, the mass ratio of chemical sniff molecule and graphene is 10:1~1:10；
2) the graphene synusia in graphene conductive ink is deposited in film substrate by vacuum filtration or filter method, constituted
The membrane structure of graphene synusia accumulation；
3) the graphene synusia build-up film structure and film substrate are cut out, and using coating conductive silver glue, conductive carbon paste or steaming
Plate the method formation contact electrode of metal.
7. the preparation method of graphene test paper according to claim 6, it is characterised in that step 2) described in film substrate
Material be nylon, glass fibre, polytetrafluoroethylene (PTFE), polypropylene, cellulose acetate, polyether sulfone, Kynoar or polypropylene fibre.
8. a kind of liquid analysis method based on graphene test paper as claimed in claim 1, it is characterised in that methods described includes
Following steps：
1) graphene test paper is placed on warm table (21), and contact electrode is passed through into signal circuit and signal acquisition mould
Block (3) is connected；
2) start warm table, and control heating platen temperature in the range of -30~200 DEG C；
3) testing liquid is added dropwise on graphene test paper using liquid Dropping feeder (22), will using signal acquisition module (3)
The electrical signal of graphene test paper is transmitted to pattern recognition module by wired or wireless method；
4) pattern recognition module is analyzed and processed electrical signal, that is, obtains the floristic analysing result to testing liquid.
9. the liquid analysis method of graphene test paper according to claim 8, it is characterised in that described electrical signal is
Voltage, electric current and resistance.
10. the liquid analysis method of graphene test paper according to claim 8, it is characterised in that pattern recognition module will
The method that electrical signal is analyzed and processed uses parameter extraction method, PCA or algorithm of support vector machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364370.7A CN107024510B (en) | 2017-05-22 | 2017-05-22 | Graphene test paper, preparation thereof and liquid analysis method based on test paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364370.7A CN107024510B (en) | 2017-05-22 | 2017-05-22 | Graphene test paper, preparation thereof and liquid analysis method based on test paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107024510A true CN107024510A (en) | 2017-08-08 |
| CN107024510B CN107024510B (en) | 2020-01-07 |
Family
ID=59528488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710364370.7A Active CN107024510B (en) | 2017-05-22 | 2017-05-22 | Graphene test paper, preparation thereof and liquid analysis method based on test paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107024510B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559188A (en) * | 2018-05-10 | 2018-09-21 | 南通市第人民医院 | Base material for gestational diabetes mellitus blood sugar test paper |
| CN108593717A (en) * | 2018-04-26 | 2018-09-28 | 京东方科技集团股份有限公司 | A kind of humidity sensor and preparation method thereof, electronic equipment |
| CN108680611A (en) * | 2018-07-02 | 2018-10-19 | 京东方科技集团股份有限公司 | Humidity sensor, measuring system, switch controller and humidity measuring method |
| CN110395157A (en) * | 2018-04-25 | 2019-11-01 | 通用汽车环球科技运作有限责任公司 | Water content detection and adjusting in interior vehicle components |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257156A (en) * | 2013-05-15 | 2013-08-21 | 苏州大学 | Gas sensor based on reduction-oxidation graphene and preparation method of gas sensor |
| CN104129779A (en) * | 2014-06-27 | 2014-11-05 | 桂林浩新科技服务有限公司 | Preparation method of graphene-containing nano paper |
| CN104502412A (en) * | 2014-12-08 | 2015-04-08 | 中国石油大学(华东) | Graphene-based ammonia sensitive material and preparation method thereof |
| CN104949609A (en) * | 2015-05-20 | 2015-09-30 | 清华大学 | Flexible graphene sensor and manufacture method thereof |
| CN106032072A (en) * | 2015-03-16 | 2016-10-19 | 中国科学院苏州纳米技术与纳米仿生研究所 | Method for preparing graphene oxide film and flexible non-contact capacitive sensor |
| CN106226272A (en) * | 2016-06-28 | 2016-12-14 | 武汉采思生物科技有限公司 | A kind of graphene oxide test paper detecting method identifying collagen peptide |
-
2017
- 2017-05-22 CN CN201710364370.7A patent/CN107024510B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257156A (en) * | 2013-05-15 | 2013-08-21 | 苏州大学 | Gas sensor based on reduction-oxidation graphene and preparation method of gas sensor |
| CN104129779A (en) * | 2014-06-27 | 2014-11-05 | 桂林浩新科技服务有限公司 | Preparation method of graphene-containing nano paper |
| CN104502412A (en) * | 2014-12-08 | 2015-04-08 | 中国石油大学(华东) | Graphene-based ammonia sensitive material and preparation method thereof |
| CN106032072A (en) * | 2015-03-16 | 2016-10-19 | 中国科学院苏州纳米技术与纳米仿生研究所 | Method for preparing graphene oxide film and flexible non-contact capacitive sensor |
| CN104949609A (en) * | 2015-05-20 | 2015-09-30 | 清华大学 | Flexible graphene sensor and manufacture method thereof |
| CN106226272A (en) * | 2016-06-28 | 2016-12-14 | 武汉采思生物科技有限公司 | A kind of graphene oxide test paper detecting method identifying collagen peptide |
Non-Patent Citations (5)
| Title |
|---|
| HAIQUN CHEN ET AL.: "Mechanically Strong, Electrically Conductive, and Biocompatible Graphene Paper", 《ADVANCED MATERIALS》 * |
| XIN JIANG ET AL.: "Foldable and electrically stable graphene film resistors prepared by vacuum filtration for flexible electronics", 《SURFACE & COATINGS TECHNOLOGY》 * |
| 彭博 等: "用于喷墨打印电子器件的石墨烯墨水的制备及应用进展研究", 《信息记录材料》 * |
| 林璟: "《耐热性聚氨酯复合树脂及其IMD油墨应用技术》", 31 October 2014, 西北工业大学出版社 * |
| 邓会 等: "石墨烯材料在水处理中的应用: 传质机制与吸附特性", 《科学通报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110395157A (en) * | 2018-04-25 | 2019-11-01 | 通用汽车环球科技运作有限责任公司 | Water content detection and adjusting in interior vehicle components |
| CN110395157B (en) * | 2018-04-25 | 2022-03-01 | 通用汽车环球科技运作有限责任公司 | Moisture detection and regulation in vehicle interior components |
| CN108593717A (en) * | 2018-04-26 | 2018-09-28 | 京东方科技集团股份有限公司 | A kind of humidity sensor and preparation method thereof, electronic equipment |
| WO2019206167A1 (en) * | 2018-04-26 | 2019-10-31 | 京东方科技集团股份有限公司 | Humidity sensor and manufacturing method therefor, and electronic device |
| CN108559188A (en) * | 2018-05-10 | 2018-09-21 | 南通市第人民医院 | Base material for gestational diabetes mellitus blood sugar test paper |
| CN108680611A (en) * | 2018-07-02 | 2018-10-19 | 京东方科技集团股份有限公司 | Humidity sensor, measuring system, switch controller and humidity measuring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107024510B (en) | 2020-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107024510A (en) | A kind of graphene test paper and its preparation and the liquid analysis method based on the test paper | |
| JP6243445B2 (en) | System for analyzing fluids | |
| US9538657B2 (en) | Resonant sensor and an associated sensing method | |
| JP2016506524A (en) | Method for analyzing a fluid using a resonant sensor | |
| CN105849539A (en) | Methods and systems for real-time sensing of viable and nonviable cells | |
| DE102011056622A1 (en) | Temperature-independent chemical and biological sensors | |
| WO2011053234A1 (en) | Method and system for performance enhancement of resonant sensors | |
| JP6063604B2 (en) | Device for detecting a substance and method for manufacturing the device | |
| US10191047B2 (en) | Sensor integration in lateral flow immunoassays and its applications | |
| CN102338765A (en) | Blood sugar testing paper | |
| Jalkanen et al. | Fabrication of porous silicon based humidity sensing elements on paper | |
| KR20150021769A (en) | Sensor for mesuring concentration of hydrogen ion and method for manufacturing the same | |
| CN106018504A (en) | PH detection double compensating method for soil matrix culture multi-parameter compound sensor | |
| US9689852B2 (en) | Resonant sensor and an associated sensing method | |
| Gugliandolo et al. | Development, characterization, and circuit modeling of inkjet-printed coupled ring resonators for application in biological samples | |
| CN108318543A (en) | A kind of heavy metal ion sensor and its operating method based on grapheme material | |
| Pioggia et al. | Characterization of a carbon nanotube polymer composite sensor for an impedimetric electronic tongue | |
| Liu et al. | A transmission line sensor with sensitivity improved for detection of ionic concentration in microfluidic channel | |
| CN110207737A (en) | Microstrip antenna sensing system, sensor, detection and the preparation method of linear array structure | |
| CN101021500A (en) | Method for producing taste sense transducer containing electroconductive polymer | |
| CN109632831A (en) | Microstrip antenna sensing system, detection and the preparation method of square spiral structure | |
| Yashaswini et al. | Construction, Working, and Applications of E-Tongue: A Versatile Tool for All Tastes? | |
| US20230408396A1 (en) | Method and device for identifing the material type of particles in liquid | |
| CN100507538C (en) | Method for producing taste sense transducer containing polymer-carbon black | |
| Karthikeyan et al. | Non-invasive adulteration sensing in milk with graphene nanomaterial sputtering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |