CN110658243A - Flexible ion detection sensor, preparation method and application - Google Patents
Flexible ion detection sensor, preparation method and application Download PDFInfo
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Abstract
The invention discloses a flexible ion detection sensor and a preparation method and application thereof, wherein the method comprises the following steps: preparing a conductive layer on a flexible substrate PET, PI, PDMS or PEN by using conductive material silver; preparing a reference electrode and a working electrode on the prepared conducting layer by using experimental reagents respectively; and connecting the reference electrode and the working electrode by a circuit to form the complete flexible ion detection sensor. Compared with other ion detection sensors, the method has the advantages of simple preparation process, few components, simple connection and low cost, and the prepared flexible ion detection sensor can be bent, has the characteristic of deformation resistance, is convenient to carry and detect in real time, and can be widely applied to the field of ion detection.
Description
Technical Field
The invention relates to flexible electronic equipment for detecting ion concentration, in particular to a flexible ion detection sensor and a preparation method and application thereof.
Background
Sodium ions are one of the important components of human muscle and nerve tissues, and are indispensable to the normal growth and development of human bodies. Insufficient or excessive intake of sodium ions can harm human health, and excessive intake of sodium ions can cause weakness of people, and excessive intake of sodium ions can cause a series of diseases, such as renal failure, cardiovascular diseases, hypertension and the like. In survey reports, the average daily sodium intake of the Chinese adult population is 5.65g, which is far beyond the daily sodium intake of 2g recommended by WHO for normal people. Sodium required by human body is mainly obtained by common salt in food, so that the detection of sodium ion content in food is very important. The flexible sodium ion detection sensor based on ion selectivity is simple to operate, can monitor the sodium ion content ingested by a human body every day, avoids the situation that sodium ions are ingested too much or not ingested enough, and helps people to live healthier.
The patent application No. CN201410606969.3 discloses a sodium ion sensor and a manufacturing method thereof, wherein the sodium ion sensor utilizes a circuit composed of a substrate, a first sodium ion selection electrode, a second sodium ion selection electrode and a salt bridge to identify sodium ions, but the sensor does not have the characteristic of being flexible and wearable. The application number is CN201010193003.3, the invention name is an all-solid-state potassium ion sensor and a preparation method thereof, a substrate, a potassium ion selective electrode and an external reference electrode are used for detecting potassium ions, and the sensor does not have the characteristics of flexibility and wearability. In the existing technical scheme about ion detection, most of detection equipment is solid and has larger volume, is not suitable for field detection and carry-on, and is very inconvenient for people in daily use.
Disclosure of Invention
The invention aims to overcome the defects of the existing all-solid-state ion detection sensor in the aspects of field detection and carrying about. The invention provides a flexible ion detection sensor, a preparation method and application thereof. The ion detection sensor is prepared on the flexible substrate (preferably but not limited to the PET), and can be widely applied to the fields of flexible wearable and ion detection.
The specific technical scheme for realizing the purpose of the invention is as follows:
a preparation method of a flexible ion detection sensor comprises the following specific steps:
step 1: preparation of flexible reference electrode
Step A1: growing a conductive material silver on the surface of a flexible substrate PET, PDMS, PI or PEN to prepare a flexible conductive layer;
step A2: preparing a ferric chloride solution with the concentration of 9-11mmol/L, and dripping the ferric chloride solution on the flexible conducting layer prepared in the step A1 by using a dropper to obtain a flexible silver chloride electrode;
step A3: dissolving sodium chloride and PVB in absolute ethyl alcohol according to the mass ratio of 1: 1.56 to prepare a jelly with the concentration of 9-11%, coating the prepared jelly on the surface of the flexible silver chloride electrode prepared in the step A2, and drying for at least 12 hours;
step A4: connecting a lead wire to one end of the electrode treated in the step A3 by using a copper foil to prepare a flexible reference electrode;
step 2: preparation of flexible working electrode
Step B1: growing a conductive material silver on the surface of a flexible substrate PET, PDMS, PI or PEN to prepare a flexible conductive layer;
step B2: preparing a chloroplatinic acid aqueous solution with the concentration of 0.5%, dropwise adding the chloroplatinic acid aqueous solution on the surface of the flexible conductive layer prepared in the step B1, and drying after waiting for 1-2 minutes;
step B3: preparing a terpineol solution with the concentration of 1% chloroplatinic acid, dropwise adding the terpineol solution of chloroplatinic acid on the surface of the flexible conductive layer treated in the step B2, placing the flexible conductive layer on a heating and drying table, and drying at the temperature of 40-60 ℃;
step B4: preparing a sodium borohydride solution with the concentration of 9-11mmol/L, and soaking the flexible conducting layer processed in the step B3 in the sodium borohydride solution for 25-35 minutes;
step B5: dropwise adding the PEDOT/PSS solution on the surface of the flexible conductive layer treated in the step B4, placing the flexible conductive layer on a heating and drying table, and drying at the temperature of 40-60 ℃;
step B6: dissolving potassium tetrachlorobenzoate boride (KTCIPB), a sodium ion selective carrier, polyvinyl chloride (PVC) and o-nitrophenol octyl ether (o-NPOE) in a Tetrahydrofuran (THF) solvent according to the mass ratio of 1: 3.5: 165: 330.5 to prepare a sodium ion selective solution with the concentration of 9-11%; or dissolving potassium tetrachlorobenzoate boride (KTCIPB), trilaurylamine, polyvinyl chloride (PVC) and dioctyl sebacate (DOS) in a Tetrahydrofuran (THF) solvent according to the mass ratio of 1: 2: 33: 64 to prepare a hydrogen ion selective solution with the concentration of 9% -11%, dripping any ion selective solution on the surface of the flexible conductive layer prepared in the step B5, and drying for at least 12 hours;
step B7: connecting a lead to one end of the flexible conductive layer prepared in the step B6 by using a copper foil to prepare a flexible sodium or hydrogen ion working electrode;
and step 3: and carrying out circuit connection on the flexible reference electrode and the flexible sodium or hydrogen ion working electrode to form the flexible ion detection sensor.
The flexible ion detection sensor prepared by the method is characterized in that the surface potential of the flexible reference electrode of the flexible ion detection sensor does not change along with the change of the ion concentration in the solution to be detected, and the surface potential of the flexible working electrode changes along with the change of the ion concentration in the solution to be detected.
The application of the flexible ion detection sensor is characterized in that one end of a flexible reference electrode and one end of a flexible working electrode are connected with an electrochemical workstation through leads, the other end of the flexible reference electrode and the other end of the flexible working electrode are immersed in corresponding ionic solution to be detected, a sensor circuit path is formed by utilizing the conductivity of the ionic solution, when the concentration of ions to be detected changes, the potential difference between the flexible reference electrode and the flexible working electrode changes, the changed potential difference is detected by the electrochemical workstation, and the concentration of corresponding ions in the solution to be detected is obtained according to detected potential difference data.
The invention has the beneficial effects that:
the flexible ion detection sensor prepared by the method has a simple structure, is prepared by utilizing the characteristic that the potential difference between the flexible reference electrode and the flexible working electrode changes along with the change of the concentration of ions to be detected, has a simple principle, is convenient to connect, can be bent by the flexible substrate, has light weight, can be attached to the skin or the surface of teeth in the oral cavity of a human body, is convenient to carry and use, and overcomes the defects that the existing solid ion selector is inconvenient to carry and detect in real time.
Drawings
FIG. 1 is a schematic diagram of the construction of a flexible reference electrode of the present invention;
FIG. 2 is a schematic structural view of a flexible working electrode of the present invention;
FIG. 3 is a schematic structural diagram of an apparatus for applying the present invention;
FIG. 4 is a graph showing the ion response of the sensor of the present invention at different sodium ion concentrations.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Example 1
Step 1: preparing a flexible reference electrode:
step A1: growing a conductive material silver on the surface of a flexible PET substrate 1 to prepare a flexible silver conductive layer;
step A2: 10ml of deionized water was taken out by a measuring cylinder, transferred to a beaker, and 16.2mg of ferric chloride powder was weighed by an electronic scale and placed in the deionized water to obtain a 10mmol/L ferric chloride solution. Dripping the ferric chloride solution on the flexible silver conducting layer prepared in the step A1 by using a dropper to prepare a flexible silver chloride electrode 2;
step A3: taking 1ml of absolute ethyl alcohol by using a dropper, transferring the absolute ethyl alcohol into a beaker, weighing 0.05g of sodium chloride into a grinding pot, grinding the sodium chloride to be fine and dissolved in an absolute ethyl alcohol solution, simultaneously weighing 0.078g of PVB powder to be dissolved in the absolute ethyl alcohol solution, fully stirring the absolute ethyl alcohol solution in which the sodium chloride and the PVB are dissolved to obtain a jelly with the concentration of 10%, and coating the prepared jelly on the flexible silver chloride electrode 2 prepared in the step A2. Drying the treated flexible silver chloride electrode 2 in a ventilation environment for at least 12 hours;
step A4: connecting a lead 4 to one end of the flexible silver chloride electrode 2 treated in the step A3 by using a copper foil 3 to obtain a flexible reference electrode;
fig. 1 is a specific structural diagram of the flexible reference electrode in the flexible sodium ion monitoring sensor prepared in step 1.
Step 2: preparing a flexible sodium ion working electrode:
step B1: growing a conductive material silver on the surface of a flexible PET substrate 5 to prepare a flexible conductive layer;
step B2: 5ml of deionized water is taken by a measuring cylinder, transferred to a beaker, and then 0.1g of chloroplatinic acid is weighed by an electronic scale and placed in the deionized water to obtain a chloroplatinic acid aqueous solution with the concentration of 0.5 percent. Dripping 40 mu L of 0.5% chloroplatinic acid solution on the flexible conductive layer prepared in the step B1 by using a liquid transfer gun, and drying by using an ear washing ball after waiting for one minute;
step B3: taking 5ml of terpineol by using a measuring cylinder, transferring the terpineol to a beaker, then weighing 0.05g of chloroplatinic acid by using an electronic scale, dissolving the chloroplatinic acid in the terpineol to obtain a 1% chloroplatinic acid terpineol solution, taking 10 mu L of 1% chloroplatinic acid terpineol solution by using a liquid transfer gun, dripping the chloroplatinic acid terpineol solution on the surface of the flexible conductive layer treated in the step B2, placing the flexible conductive layer on a heating and drying table with the temperature set to 40 ℃, and waiting for 20 minutes;
step B4: taking 50ml of deionized water by using a measuring cylinder, transferring the deionized water to a beaker, weighing 1.89mg of sodium borohydride powder by using an electronic scale, putting the sodium borohydride powder into the deionized water, uniformly mixing to obtain 10mmol/L sodium borohydride solution, and soaking the flexible conductive layer treated in the step B3 in the sodium borohydride solution for 30 minutes;
step B5: take 10 μ L of PEDOT with pipette: dropping the PSS solution on the surface of the flexible conductive layer treated in the step B4, placing the flexible conductive layer on a heating and drying table with the temperature set to 40 ℃, and waiting for 10 minutes;
step B6: taking 1ml of the LTHF solution by using a pipette, putting the solution in a clean beaker, weighing 0.7mg of sodium ion selective carrier powder, 0.2mg of KTClPB powder, 33mg of PVC powder and 66.1mg of O-NPOE powder, dissolving the powder in the THF solution, and uniformly stirring the solution. Dripping 5 mu L of the solution on the flexible conductive layer treated in the step B5 by using a liquid transfer gun, and drying for at least 12 hours in a ventilated environment to obtain a flexible conductive layer 6;
step B7: connecting a lead 8 to one end of the flexible conducting layer 6 prepared in the step B6 by using a copper foil 7 to prepare a flexible sodium ion working electrode;
fig. 2 is a specific structure diagram of the flexible sodium ion working electrode prepared in step 2.
And step 3: and connecting one ends of the flexible reference electrode and the flexible working electrode connecting leads to an electrochemical workstation, and soaking the ends of the two electrodes which are not connected with the leads in the sodium ion solution to be detected to obtain the structural schematic diagram of the flexible ion detection sensor application device, which is shown in figure 3.
And 4, step 4: and (2) soaking the flexible reference electrode and the flexible working electrode prepared by the methods in the steps 1 and 2 in a 100mmol/L sodium chloride solution for 60 minutes, pretreating before detection, then simultaneously placing the flexible reference electrode and the flexible working electrode in a solution to be detected containing sodium ions with a certain concentration to form communication, changing the potential difference between the two electrodes along with the change of the concentration of the sodium ions, and judging the concentration of the ions in the solution to be detected according to the change of the potential difference between the two electrodes. Fig. 4 is an ion response test chart of the device under different sodium ion concentrations. As can be seen from the figure, after 40 seconds, the potential difference between the flexible reference electrode and the flexible working electrode is basically stable, the potential difference between the two electrodes is obviously changed along with the change of the sodium ion concentration, the sodium ion concentration and the potential difference between the two electrodes have a corresponding relation, and the detection of the sodium ion concentration in the solution to be detected can be completed according to the corresponding relation and the potential difference between the two electrodes detected by the electrochemical workstation.
Claims (3)
1. A preparation method of a flexible ion detection sensor is characterized by comprising the following specific steps:
step 1: preparation of flexible reference electrode
Step A1: growing a conductive material silver on the surface of a flexible substrate PET, PDMS, PI or PEN to prepare a flexible conductive layer;
step A2: preparing a ferric chloride solution with the concentration of 9-11mmol/L, and dripping the ferric chloride solution on the flexible conducting layer prepared in the step A1 by using a dropper to obtain a flexible silver chloride electrode;
step A3: dissolving sodium chloride and PVB in absolute ethyl alcohol according to the mass ratio of 1: 1.56 to prepare a jelly with the concentration of 9-11%, coating the prepared jelly on the surface of the flexible silver chloride electrode prepared in the step A2, and drying for at least 12 hours;
step A4: connecting a lead wire to one end of the electrode treated in the step A3 by using a copper foil to prepare a flexible reference electrode;
step 2: preparation of flexible working electrode
Step B1: growing a conductive material silver on the surface of a flexible substrate PET, PDMS, PI or PEN to prepare a flexible conductive layer;
step B2: preparing a chloroplatinic acid aqueous solution with the concentration of 0.5%, dropwise adding the chloroplatinic acid aqueous solution on the surface of the flexible conductive layer prepared in the step B1, and drying after waiting for 1-2 minutes;
step B3: preparing a terpineol solution with the concentration of 1% chloroplatinic acid, dropwise adding the terpineol solution of chloroplatinic acid on the surface of the flexible conductive layer treated in the step B2, placing the flexible conductive layer on a heating and drying table, and drying at the temperature of 40-60 ℃;
step B4: preparing a sodium borohydride solution with the concentration of 9-11mmol/L, and soaking the flexible conducting layer processed in the step B3 in the sodium borohydride solution for 25-35 minutes;
step B5: dropwise adding the PEDOT/PSS solution on the surface of the flexible conductive layer treated in the step B4, placing the flexible conductive layer on a heating and drying table, and drying at the temperature of 40-60 ℃;
step B6: dissolving potassium tetrachlorobenzene boride, a sodium ion selective carrier, polyvinyl chloride and o-nitrooctyl ether in a tetrahydrofuran solvent according to a mass ratio of 1: 3.5: 165: 330.5 to prepare a sodium ion selective solution with the concentration of 9-11%; or dissolving the potassium tetrachloro-benzoate boride, the trilaurylamine, the polyvinyl chloride and the dioctyl sebacate in a tetrahydrofuran solvent according to the mass ratio of 1: 2: 33: 64 to prepare a hydrogen ion selection solution with the concentration of 9-11%, dripping any ion selection solution on the surface of the flexible conductive layer prepared in the step B5, and drying for at least 12 hours;
step B7: connecting a lead to one end of the flexible conductive layer prepared in the step B6 by using a copper foil to prepare a flexible sodium or hydrogen ion working electrode;
and step 3: and carrying out circuit connection on the flexible reference electrode and the flexible sodium or hydrogen ion working electrode to form the flexible ion detection sensor.
2. A flexible ion detection sensor made by the method of claim 1, wherein the surface potential of the flexible reference electrode of the flexible ion detection sensor does not change with the change of the ion concentration in the solution to be detected, and the surface potential of the flexible working electrode changes with the change of the ion concentration in the solution to be detected.
3. The application of the flexible ion detection sensor according to claim 2, wherein one end of the flexible reference electrode and one end of the flexible working electrode are connected with the electrochemical workstation through leads, the other end of the flexible reference electrode and one end of the flexible working electrode are simultaneously immersed in the corresponding ionic solution to be detected, a sensor circuit path is formed by utilizing the conductivity of the ionic solution, when the concentration of ions to be detected changes, the potential difference between the flexible reference electrode and the flexible working electrode changes, the changed potential difference is detected by the electrochemical workstation, and the concentration of the corresponding ions in the solution to be detected is obtained according to the detected potential difference data.
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| CN115343346A (en) * | 2022-08-03 | 2022-11-15 | 南方科技大学 | Ion sensor, maskless preparation method thereof and body fluid sensing monitoring system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852761A (en) * | 2010-05-18 | 2010-10-06 | 浙江大学 | All-solid sodium ion selective electrode and preparation method thereof |
| CN102980926A (en) * | 2012-11-28 | 2013-03-20 | 清华大学 | Preparation method of flexible double-faced full-solid ion concentration detection sensor |
| CN108680615A (en) * | 2018-05-17 | 2018-10-19 | 华东师范大学 | A kind of preparation method of paper substrate flexible humidity sensor |
| CN109091120A (en) * | 2018-06-19 | 2018-12-28 | 华东师范大学 | A method of flexible sensor is made based on growth in situ silver electrode on paper |
| CN110044984A (en) * | 2019-04-10 | 2019-07-23 | 华东师范大学 | A kind of technology of preparing of coplanar flexible electrochemical sensor electrode and array |
| CN110192869A (en) * | 2019-05-24 | 2019-09-03 | 厦门大学 | Flexible calcium potassium ion detection sensor based on graphene composite material |
| CN110192868A (en) * | 2019-05-24 | 2019-09-03 | 厦门大学 | Flexible calcium potassium ion detection sensor based on graphene composite material and preparation method thereof |
-
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- 2019-09-10 CN CN201910852520.8A patent/CN110658243A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852761A (en) * | 2010-05-18 | 2010-10-06 | 浙江大学 | All-solid sodium ion selective electrode and preparation method thereof |
| CN102980926A (en) * | 2012-11-28 | 2013-03-20 | 清华大学 | Preparation method of flexible double-faced full-solid ion concentration detection sensor |
| CN108680615A (en) * | 2018-05-17 | 2018-10-19 | 华东师范大学 | A kind of preparation method of paper substrate flexible humidity sensor |
| CN109091120A (en) * | 2018-06-19 | 2018-12-28 | 华东师范大学 | A method of flexible sensor is made based on growth in situ silver electrode on paper |
| CN110044984A (en) * | 2019-04-10 | 2019-07-23 | 华东师范大学 | A kind of technology of preparing of coplanar flexible electrochemical sensor electrode and array |
| CN110192869A (en) * | 2019-05-24 | 2019-09-03 | 厦门大学 | Flexible calcium potassium ion detection sensor based on graphene composite material |
| CN110192868A (en) * | 2019-05-24 | 2019-09-03 | 厦门大学 | Flexible calcium potassium ion detection sensor based on graphene composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 沈麟君: "基于聚多巴胺及压印技术的新型柔性衬底金属图形化研究及在无线离子传感器中的应用研究", 《中国优秀博硕士学位论文全文数据库(硕士)信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115343346A (en) * | 2022-08-03 | 2022-11-15 | 南方科技大学 | Ion sensor, maskless preparation method thereof and body fluid sensing monitoring system |
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Application publication date: 20200107 |