CN108226256A - With CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine sensor and preparation method thereof - Google Patents
With CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine sensor and preparation method thereof Download PDFInfo
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- CN108226256A CN108226256A CN201810013685.1A CN201810013685A CN108226256A CN 108226256 A CN108226256 A CN 108226256A CN 201810013685 A CN201810013685 A CN 201810013685A CN 108226256 A CN108226256 A CN 108226256A
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- 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
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4073—Composition or fabrication of the solid electrolyte
- G01N27/4074—Composition or fabrication of the solid electrolyte for detection of gases other than oxygen
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- 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
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4075—Composition or fabrication of the electrodes and coatings thereon, e.g. catalysts
Abstract
One kind is with CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine sensor and preparation method thereof, belongs to gas sensor technical field.Sensor heats the Al of electrode by carrying Pt successively2O3Ceramic wafer, stabilizing zirconia substrate, Pt reference electrodes and CoMoO4Sensitive electrode forms, CoMoO4Sensitive electrode material is prepared by hydro-thermal method；Reference electrode and sensitive electrode are separate and symmetrically prepare at the both ends of stabilizing zirconia upper surface of base plate, stabilizing zirconia base lower surface and the Al with Pt heating electrodes2O3Ceramic wafer is bonded together.The present invention utilizes the CoMoO with high electrochemical catalytic activity using stabilizing zirconia as ion conductive layer4Composite oxide material is sensitive electrode, changes the microscopic appearance of sensitive electrode layer by different calcination temperatures (800 DEG C~1100 DEG C), achievees the purpose that improve triethylamine sensitivity characteristic.
Description
Technical field
The invention belongs to gas sensor technical fields, and in particular to one kind is with CoMoO4Stablize oxidation for sensitive electrode
Zirconium base blendes together electric potential type triethylamine (TEA) sensor and preparation method thereof, is mainly used for the quick detection of volatile organic amines.
Background technology
Triethylamine (TEA) is one of most important volatile organic amines, has water white transparency, inflammable, explosive, hypertoxic, thorn
Swash the characteristics of property is strong, be widely used in industrial processes, including organic solvent, polymerization inhibitor, preservative, catalyst, conjunction
Into dyestuff etc..Meanwhile TEA may also be generated during the corruption of dead fish and marine organisms, and gas concentration is with death
The deterioration of degree and significant increase.What is more important, it can cause a variety of influences harmful to health, such as：Eye irritation is exhaled
Suction problem, pulmonary edema or even death.Therefore, exploitation has highly sensitive, highly selective and high stability real-time, quick, just
It takes and the TEA gas sensors of low cost has vital meaning.
So far, based on SnO2、ZnO、α-Fe2O3、α-MoO3、Zn2SnO4And NiFe2O4Metal-oxide semiconductor (MOS)
(MOS) type TEA sensors due to low manufacture cost, the advantages that good portability, sensing characteristics are good, high sensitivity, it is extensive
Research.But most of MOS gas sensors lack quick response and selectivity.In contrast, solid electrolyte type gas sensing
Device is concerned due to having excellent sensing capabilities to various dangerous, inflammable, explosion hazard gases.Wherein, it is steady based on yttrium oxide
The mixed potential type gas sensor of zirconium oxide (YSZ) electrolyte is determined since it is with better environmental stability and excellent choosing
Selecting property and be considered as most potential alternative devices.Up to the present, a variety of YSZ gas sensors are had been developed for, are used
In detection NO2、NH3、SO2、H2S, VOCs and hydrocarbon.However, be used to implement quick detection TEA based on blending together current potential
There is not been reported for the YSZ bases gas sensor of model.
The sensitive mechanism that stabilizing zirconia base blendes together electric potential type gas sensor is：Under test gas TEA passes through quick in atmosphere
Sense electrode layer is spread to three-phase reaction interface, and due to react (1) in diffusion process, the concentration of under test gas TEA can be by
It gradually reduces, the porosity of sensitive oxide electrode determines the reduction degree of under test gas TEA concentration.Gas/YSZ conductive layers/
At the three phase boundary of sensitive electrode, while electrochemical reducting reaction and electrochemical oxidation reactions occurs, reaction (2) and (3) is formed
One local cell, when the two reaction rate is equal, reaction reach balance, on sensitive electrode formed blend together current potential, it and
Detection signal of the potential difference of reference electrode as sensor.Detect signal magnitude by electrochemical reaction (2) and the rate of (3) Lai
It determines, and reaction rate depends on the electrochemistry of sensitive electrode material and chemical catalysis activity, electrode material microstructure (ratio
The porosity of such as material, granularity, pattern).Therefore, exploitation can be used for the sensitive electrical of the high electrochemical catalytic activity of TEA detections
Pole material is very necessary to build high performance TEA gas sensors.
Reaction equation is as follows：
2C6H15N+39/2O2→12CO2+N2+15H2O (1)
39/2O2+78e-→39O2- (2)
2C6H15N+39O2-→12CO2+N2+15H2O+78e- (3)
Invention content
The object of the present invention is to provide one kind with CoMoO4Stabilizing zirconia base for sensitive electrode blendes together three second of electric potential type
Amine sensor and preparation method thereof to realize the needs of quick detection triethylamine, and effectively improves transducer sensitivity, reduces inspection
The performances such as lower limit are surveyed, promote functionization of this sensor in volatile organic amines detection field.The obtained sensing of the present invention
Device other than with rapid response speed and high sensitivity, also with relatively low Monitoring lower-cut, well selectivity, moisture-proof and
Stability.
The triethylamine sensor of super fast response according to the present invention be based on stabilizing zirconia (YSZ) solid electrolyte and
CoMoO4Novel constructed by composite oxides sensitive electrode blendes together electric potential type Triethylamine gas sensor, YSZ (Y2O3It mole mixes
Miscellaneous a concentration of 8% ZrO2) as ion conductive layer.
Stabilizing zirconia base of the present invention blendes together electric potential type triethylamine sensor, as shown in Figure 1, from bottom to up successively
By the Al for carrying Pt heating electrodes2O3Ceramic wafer, stabilizing zirconia substrate, Pt reference electrodes and sensitive electrode composition；Reference electrode
It is separate with sensitive electrode and symmetrically prepare in the both ends of stabilizing zirconia upper surface of base plate, stabilizing zirconia substrate following table
Face and the Al with Pt heating electrodes2O3Ceramic wafer is bonded together；Sensitive electrode material is CoMoO4, make by the following method
It is standby to obtain：
CoMoO4Sensitive electrode material is synthesized by simple hydro-thermal method.Under magnetic stirring, by 0.5mmol Co
(NO3)2·6H2O and 0.5mmol Na2MoO4·2H2O is dissolved in the mixed solution of 30~50mL deionized waters, ethyl alcohol and ethylene glycol
In；Then, by obtained solution under the conditions of 160~200 DEG C hydro-thermal reaction 5~8 hours, reaction product is after centrifuging, washing
Precipitation is collected, gained is deposited under 60~90 DEG C of vacuum condition dry；Finally by desciccate respectively at 800~1100 DEG C
1~3h is sintered, so as to obtain CoMoO of the present invention4Sensitive electrode material；Wherein deionized water, ethyl alcohol and ethylene glycol
Volume ratio is (1~2)：1：(1~2).
The preparation method of triethylamine sensor of the present invention, its step are as follows：
(1) Pt reference electrodes are made：The Pt ginsengs of 15~20 μm thick of making are starched using Pt in one end of YSZ upper surface of base plate
Electrode is examined, while will be sticked on reference electrode centre position as contact conductor after a Pt doublings, then YSZ substrates exist
It is toasted 1~2 hour under the conditions of 90~120 DEG C, then YSZ substrates is sintered 1~2 hour at 1000~1100 DEG C, exclude platinum slurry
In terpinol, be finally down to room temperature；
(2) CoMoO is made4Sensitive electrode：By CoMoO4Sensitive electrode material is slurred expecting with deionized water, mass concentration
It is 2~20%；Use CoMoO4Slurry is preparing 20~30 μ m-thicks with the other end of the symmetrical YSZ upper surface of base plate of reference electrode
Sensitive electrode will be equally sticked on sensitive electrode after a platinum filament doubling as contact conductor；
(3) the YSZ substrates of reference electrode and sensitive electrode are sintered 1 under the conditions of 800~1000 DEG C step (2) preparation
~3 hours；Heating rate during high temperature sintering is 1~2 DEG C/min；
(4) inorganic bond is prepared：Measure waterglass (Na2SiO3·9H2O) 2~4mL, and weigh Al2O3Powder 0.7~
1.0g, by waterglass and Al2O3Powder is mixed and stirred for uniformly, inorganic bond being made；
(5) Al of electrode is heated using inorganic bond by YSZ base lower surfaces and with Pt2O3Ceramic wafer is bonded in one
It rises；
Wherein, the Al with Pt heating electrodes2O3Ceramic wafer is in Al2O3It is obtained on ceramic wafer by silk-screen printing Pt,
Al with Pt heating electrodes2O3Ceramic wafer uses together as the heating plate of device；
(6) step (5) is obtained device to be welded, encapsulate, it is of the present invention with CoMoO so as to obtain4For sensitivity
The YSZ bases of electrode blend together electric potential type triethylamine sensor.
The present invention utilizes the CoMoO with high electrochemical catalytic activity using stabilizing zirconia as ion conductive layer4It is multiple
Conjunction oxide material is sensitive electrode, changes the microcosmic of sensitive electrode layer by different calcination temperatures (800 DEG C~1100 DEG C)
Pattern achievees the purpose that improve triethylamine sensitivity characteristic.
Advantages of the present invention：
(1) typical solid electrolyte -- stabilizing zirconia (YSZ) is utilized, there is good thermal stability and chemical stabilization
Property, triethylamine can be detected in complex environment；
(2) high-performance composite oxide CoMoO is prepared using simple hydrothermal synthesis method4As sensor sensing electrode,
Preparation method is simple, conducive to the industrial production of mass.
(3) it by changing the different calcination temperatures (800 DEG C~1100 DEG C) of material, obtains quick with different pore passage structures
So as to optimize the microstructure of sensitive electrode, it is anti-that three phase boundary participation electrochemistry is quickly reached conducive under test gas for sense electrode layer
Should, so as to improve the response speed of sensor and sensitivity.
Description of the drawings
Fig. 1：YSZ bases of the present invention blend together the structure diagram of electric potential type triethylamine sensor.
Each section title：Al2O3Ceramic wafer 1, Pt heating electrode 2, inorganic bond 3, YSZ substrates 4, Pt silks 5, Pt references
Electrode 6, CoMoO4Sensitive electrode 7.
Fig. 2：Different sintering temperature CoMoO obtained by the present invention4(wherein, abscissa is the XRD diagram of sensitive electrode material
Angle, ordinate are intensity).
As shown in Fig. 2, for different sintering temperature CoMoO4The XRD diagram of sensitive electrode material, by being compared with standard spectrogram,
It is sintered obtained material and CoMoO4Standard card JCPDS (File No.14-587) is consistent.Show that we invent preparation
Sensitive electrode material is CoMoO4Material.
Fig. 3：The SEM figures of the sensitive electrode material under different sintering temperatures prepared by the present invention.
As shown in figure 3, a：800 DEG C, b：1000 DEG C, c：The CoMoO of 1100 DEG C of sintering4The SEM figures of sensitive electrode material, from
It can be seen from the figure that, with the raising of sintering temperature, granular size gradually increases, and changes the sintering temperature of sensitive material and can change
Become the microscopic appearance of sensitive electrode, form loose porous structure, the porosity of electrode is conducive to the diffusion of gas.
Fig. 4：Utilize the CoMoO being sintered at 800 DEG C, 1000 DEG C and 1100 DEG C respectively4Biography as sensitive electrode material
Sensor is to the response correlation curve of 100ppm triethylamines (wherein, abscissa is the time, and ordinate is potential difference values).
As shown in figure 4, being device made by embodiment 1,2,3 to the potential difference Δ V (sound of device of 100ppm triethylamines
Should be worth and be represented with potential difference Δ V), it can be seen from the figure that embodiment 1, the response of 2,3 pairs of 100ppm triethylamines be respectively-
48th, -102 and -58mV.It can be seen that the CoMoO being sintered at 1000 DEG C4YSZ bases as sensitive electrode material blend together electric potential type
Triethylamine sensor has highest response.
Fig. 5：Utilize the CoMoO being sintered at 1000 DEG C4Sensor continuous response curve (a, b) as sensitive electrode material
(wherein, abscissa is the time, and ordinate is potential difference values.Operating temperature is 600 degree) and sensitivity curve (c) (wherein, horizontal seat
TEA concentration is designated as, ordinate is potential difference values.Operating temperature is 600 degree).
As shown in figure 5, for CoMoO4(1000℃)The continuous response curve of device, it can be seen from the figure that device is to 100ppm
The response of triethylamine be -102mV, response time 1s, the minimum triethylamine that can detect 100ppb, this sensor performance
Ultrafast response speed and relatively low Monitoring lower-cut are gone out.
Fig. 6：Utilize the CoMoO being sintered at 1000 DEG C4The selective bar chart of sensor as sensitive electrode material.
(wherein, abscissa is potential difference values, and ordinate is test gas：From top to bottom be respectively nitrogen dioxide, carbon monoxide, hydrogen,
Methane, ammonia, triethylamine, acetone, formaldehyde, benzene, toluene, dimethylbenzene)
As shown in fig. 6, for CoMoO4(1000℃)The selectivity of device, it can be seen from the figure that device shows triethylamine
Maximum sensitivity characteristic, the response of other interference gas are relatively low, it can be seen that, device has selectivity well.
Fig. 7：Utilize the CoMoO being sintered at 1000 DEG C4Humidity influence curve (its of sensor as sensitive electrode material
In, abscissa is relative humidity, and ordinate is potential difference values).
As shown in fig. 7, for CoMoO4(1000℃)Response of the device under different humidity to 100ppm triethylamines, can from figure
To find out, device is less than 6% in 20~98% humidity range, to the response variation of 100ppm triethylamines, shows sensing
Utensil has good moisture-proof.
Fig. 8：Utilize the CoMoO being sintered at 1000 DEG C4The stability curve of sensor as sensitive electrode material.(its
In, abscissa is the time, and ordinate is respectively potential difference values and potential difference knots modification)
As shown in figure 8, for CoMoO4(1000℃)Stability test of the device in 20 days, it can be seen from the figure that device exists
In 20 days, the fluctuation range of response is less than 4.4%, shows that time device has good stability.
Specific embodiment
Embodiment 1：
CoMoO is prepared with sol-gel method4Material, by the CoMoO of 800 DEG C of sintering4(800℃)As sensitive electrode material system
Make YSZ bases and blend together electric potential type triethylamine sensor, and test sensor air-sensitive performance, detailed process is as follows：
1. make Pt reference electrodes：It is starched in one end of 2 × 2mm of length and width, the YSZ upper surface of base plate of thickness 0.2mm using Pt
Make one layer of 0.5mm × 2mm size, 15 μ m-thicks Pt reference electrodes, while with being sticked in reference electrode after a Pt doublings
Between extraction electrode lead on position；Then YSZ substrates are toasted 1.5 hours, then under the conditions of 100 DEG C by YSZ substrates 1000
It is sintered 1 hour at DEG C, so as to exclude the terpinol in platinum slurry, is finally down to room temperature.
2. make CoMoO4Sensitive electrode：First CoMoO is prepared with hydrothermal synthesis method4Material.Weigh 0.5mmol Co
(NO3)2·6H2O and 0.5mmol Na2MoO4·2H2It is dissolved in 30mL deionized waters, ethyl alcohol and ethylene glycol mixing by O respectively
(volume ratio of deionized water, ethyl alcohol and ethylene glycol is 1 in solution： 1：1).Then, solution obtained above is transferred to 50mL
In the stainless steel autoclave of teflon lined, and reacted 6 hours under the conditions of 180 DEG C.Through centrifuging, washing (deionized water
And absolute ethyl alcohol) precipitation is collected afterwards, it is dry in 80 DEG C of vacuum drying chamber.Desciccate is finally sintered 2h at 800 DEG C,
Obtain CoMoO4Sensitive electrode material, product quality are 0.65g.
Take 5mg CoMoO4Powder is tuned into slurry with deionized water 100mg, by CoMoO4Slurry is symmetrical with reference electrode
The other end of YSZ upper surface of base plate coats one layer of 0.5mm × 2mm size, 20 μm of thick sensitive electrodes, a similary platinum filament
Extraction electrode lead on sensitive electrode is sticked to after doubling.
The YSZ substrates with reference electrode and sensitive electrode made are warming up to 800 with the heating rate of 2 DEG C/min
DEG C and be down to room temperature after keeping 2h.
3. bond the ceramic wafer with heating electrode.Use inorganic bond (Al2O3With waterglass Na2SiO3·9H2O,
Mass volume ratio is 1g：4mL) Pt that carries of the lower surface of YSZ substrates (side of uncoated electrode) and same size is heated
The Al of electrode2O3Ceramic wafer (2 × 2mm of length and width, thickness 0.2mm) is bonded.
4. device welding, encapsulation.Device is welded on hexagonal tube socket, puts on protective cover, completes and blendes together electric potential type
Triethylamine sensor.
Embodiment 2：
With the CoMoO of 1100 DEG C of sintering4Material makes triethylamine sensor, manufacturing process as sensitive electrode material
For：
By the CoMoO prepared by preceding method41100 DEG C of sintering obtain sensitive electrode material in Muffle furnace
CoMoO4(1100℃), device fabrication processes are same as Example 1.
Embodiment 3：
With the CoMoO of 1000 DEG C of sintering4Material makes triethylamine sensor, manufacturing process as sensitive electrode material
For：
By the CoMoO prepared by preceding method41000 DEG C of sintering obtain sensitive electrode material in Muffle furnace
CoMoO4(1000℃), device fabrication processes are same as Example 1.
Sensor is connected on Rigol signal testers, respectively by sensor be placed in air, 100ppb triethylamines,
200ppb triethylamines, 500ppb triethylamines, 1ppm triethylamines, 2ppm triethylamines, 5ppm triethylamines, 10ppm triethylamines, 20ppm
Triethylamine, 50ppm triethylamines, 100ppm triethylamines, 200ppm triethylamines atmosphere in carry out voltage signal test.Device
Response size represents with Δ V, value VUnder test gas-VAir。
It is listed in table 1 respectively with CoMoO4(800℃)、CoMoO4(1000℃)And CoMoO4(1100℃)Biography for sensitive electrode material
Sensor is to 100ppm triethylamine response sizes.It can be seen that, three kinds of devices have good response to triethylamine from table
Characteristic, wherein using CoMoO4(1000℃)The response highest of device for sensitive electrode material is -102mV.In addition, from table 2
It can be seen that CoMoO4(1000℃)Device is -53mV/decade to the sensitivity of 5-200ppm triethylamines.It is it can be seen that current
The Copper diethlydithiocarbamate that blendes together constructed shows triethylamine good sensitivity characteristic, has very in atmospheric environment detection field
Good potential application foreground.
Table 1：With CoMoO4(800℃)、CoMoO4(1000℃)And CoMoO4(1100℃)Sensor pair for sensitive electrode material
100ppm triethylamines respond Value Data
Table 2：With CoMoO4(1000℃)The Δ V of sensor for sensitive electrode material with triethylamine concentration delta data
| The concentration (ppm) of triethylamine | Sensitive electrode and reference electrode potential difference Δ V (mV) |
| 0.1 | -3 |
| 0.2 | -4.5 |
| 0.5 | -7.5 |
| 1 | -12.5 |
| 2 | -19.5 |
| Sensitivity (mV/decade) | -14 |
| 5 | -27 |
| 10 | -37 |
| 20 | -68 |
| 50 | -80 |
| 100 | -102 |
| 200 | -106.5 |
| Sensitivity (mV/decade) | -53 |
Claims (6)
1. one kind is with CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine sensor, from bottom to up successively
By the Al for carrying Pt heating electrodes2O3Ceramic wafer, stabilizing zirconia substrate, Pt reference electrodes and sensitive electrode composition；Reference electrode
It is separate with sensitive electrode and symmetrically prepare in the both ends of stabilizing zirconia upper surface of base plate, stabilizing zirconia substrate following table
Face and the Al with Pt heating electrodes2O3Ceramic wafer is bonded together；It is characterized in that：Sensitive electrode material is CoMoO4, by
Following method is prepared,
Under magnetic stirring, by 0.5mmol Co (NO3)2·6H2O and 0.5mmol Na2MoO4·2H2O is dissolved in 30~50mL and goes
In the mixed solution of ionized water, ethyl alcohol and ethylene glycol；Then, by obtained solution under the conditions of 160~200 DEG C hydro-thermal reaction 5
~8 hours, reaction product collected precipitation after centrifuging, washing, and gained is deposited under 60~90 DEG C of vacuum condition dry；Finally
Desciccate product is sintered to 1~3h at 800~1100 DEG C respectively, so as to obtain CoMoO of the present invention4Sensitive electrode
Material.
2. one kind as described in claim 1 is with CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine biography
Sensor, it is characterised in that：The volume ratio of deionized water, ethyl alcohol and ethylene glycol is (1~2)：1：(1~2).
3. one kind described in claims 1 or 2 is with CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine biography
The preparation method of sensor, its step are as follows：
(1) Pt reference electrodes are made：The Pt of 15~20 μ m-thicks is made with reference to electricity using Pt slurries in one end of YSZ upper surface of base plate
Pole, while will be sticked on reference electrode centre position after a Pt doublings as contact conductor, then by YSZ substrates 90~
It is toasted 1~2 hour under the conditions of 120 DEG C, then YSZ substrates is sintered 1~2 hour at 1000~1100 DEG C, excluded in platinum slurry
Terpinol is finally down to room temperature；
(2) CoMoO is made4Sensitive electrode：By CoMoO4Sensitive electrode material is slurred expecting with deionized water, mass concentration for 2~
20%；Use CoMoO4Slurry is in the sensitivity that 20~30 μ m-thicks are prepared with the other end of the symmetrical YSZ upper surface of base plate of reference electrode
Electrode will be equally sticked on sensitive electrode after a platinum filament doubling as contact conductor；
(3) the YSZ substrates of reference electrode and sensitive electrode are sintered 1~3 under the conditions of 800~1000 DEG C step (2) preparation
Hour；
(4) Al of electrode is heated using inorganic bond by YSZ base lower surfaces and with Pt2O3Ceramic wafer is bonded together；
(5) step (4) is obtained device to be welded, encapsulate, so as to obtain with CoMoO4YSZ bases for sensitive electrode blend together electricity
Bit-type triethylamine sensor.
4. one kind as claimed in claim 3 is with CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine biography
The preparation method of sensor, it is characterised in that：Heating rate when step (3) high temperature is sintered is 1~2 DEG C/min.
5. one kind as claimed in claim 3 is with CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine biography
The preparation method of sensor, it is characterised in that：It is to measure 2~4mL of waterglass, and weigh Al2O30.7~1.0g of powder, by waterglass
With Al2O3Powder is mixed and stirred for uniformly, inorganic bond being made.
6. one kind as claimed in claim 3 is with CoMoO4Stabilizing zirconia base for sensitive electrode blendes together electric potential type triethylamine biography
The preparation method of sensor, it is characterised in that：Al with Pt heating electrodes2O3Ceramic wafer is in Al2O3Pass through silk screen on ceramic wafer
Printing Pt is obtained.
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| CN109001282A (en) * | 2018-07-10 | 2018-12-14 | 吉林大学 | With Cd2V2O7Electric potential type NH is blended together for the YSZ base of sensitive electrode3Sensor and preparation method |
| CN113219011A (en) * | 2021-05-19 | 2021-08-06 | 吉林大学 | Co-doped SnO2Formaldehyde-acetone gas sensor and preparation method thereof |
| CN114813880A (en) * | 2022-04-28 | 2022-07-29 | 安徽大学 | Integrated electrochemical gas sensor and preparation process thereof |
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