CN108956717A - One kind being based on PANI@SnO2The flexible flat formula ammonia gas sensor of nano sensitive material and its application - Google Patents
One kind being based on PANI@SnO2The flexible flat formula ammonia gas sensor of nano sensitive material and its application Download PDFInfo
- Publication number
- CN108956717A CN108956717A CN201811040243.2A CN201811040243A CN108956717A CN 108956717 A CN108956717 A CN 108956717A CN 201811040243 A CN201811040243 A CN 201811040243A CN 108956717 A CN108956717 A CN 108956717A
- Authority
- CN
- China
- Prior art keywords
- sno
- sensitive material
- pani
- sensor
- nano sensitive
- 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.)
- Pending
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
- 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
- G01N27/127—Composition of the body, e.g. the composition of its sensitive layer comprising nanoparticles
Abstract
One kind being based on PANI@SnO2The flexible flat formula ammonia gas sensor of nano sensitive material and its application in terms of detecting ammonia at room temperature in atmospheric environment, belong to gas sensor technical field.Sensor is the PANI@SnO by flexible PET substrate, growth in situ on PET substrate surface2Nano sensitive material composition.The sensor that the present invention is developed also has extremely low Monitoring lower-cut other than sensitivity with higher, can detect the NH down to 10ppb3, to 100ppm NH3Sensitivity can achieve 31.8, and present extraordinary selectivity.The planar configuration sensor of flexible of the present invention, manufacture craft is simple, small in size, safe and harmless, has important application value.
Description
Technical field
The invention belongs to gas sensor technical fields, and in particular to one kind is based on PANI@SnO2Nano sensitive material
Flexible flat formula ammonia gas sensor and its application in terms of detecting ammonia at room temperature in atmospheric environment.
Background technique
Ammonia (NH3) be a kind of colourless but irritant smell gas, have strong corruption to eyes and respiratory apparatus
Corrosion.It is provided according to national standard " occupational exposure limits for workplace hazards GBZ2-2002 ", workshop NH3Highest is allowed
Concentration is 40ppm.Therefore, developing has high sensitivity, and low detection limits, and can detect at room temperature and cheap NH3
Gas sensor has important practical significance.
In fact, in the past few years, surrounding NH3The research of sensor is deepening constantly always, and has developed
Various types of NH3Sensor, such as traditional oxide semiconductor gas sensor (SnO2、In2O3、Fe2O3、WO3Deng) and
Mixed potential type gas sensor (zirconium oxide and Ni3V2O8、TiO2@WO3).However, these materials it is maximum the disadvantage is that preparation
Sensor usually could have response at a temperature of very high to ammonia, and high operating temperature considerably increases energy consumption and limits
The practical application for the material developed.NH based on organic conductive macromolecule and semiconductor oxide composite3Sensor,
The highly sensitive advantage that conductor oxidate can not only be retained, also with the low detection temperature and good selection of conducting polymer
The characteristic of property, therefore paid close attention to.SnO2Have as typical n-type semiconductor oxide and is readily synthesized, is at low cost, chemical
The good feature of stability, is widely used in gas sensor material.Electrically conductive polyaniline (PANI) has high conductivity, is easy to close
At, low in cost and environmental stability is good and receives significant attention, it is considered to be the best candidate material of flexible gas sensor.
PANI is a kind of special p-type sensitive material by hydrogen ion conductive, by with NH3Contact reduces free hydrogen ion and electric
Resistance increases, and is detectable electric signal by the change transitions of gas concentration.And the formation of p-n heterojunction greatly improves material
The sensitivity of material.Based on this, carry out the NH of Organic-inorganic composite3Sensor designs and prepares, for enlargement gas sensor
Application have highly important scientific meaning.The present invention uses SnO2It is opened with polyaniline composite material as nano sensitive material
The flexible sensor of sending, can be at room temperature to NH3Higher sensitivity is shown, there is extremely low NH3Detection limit.
Summary of the invention
The object of the present invention is to provide one kind to be based on PANI@SnO2The flexible flat formula NH of nano sensitive material3Sensor and
Its room temperature in atmospheric environment detects NH3The application of aspect.
The present invention passes through preparation SnO2Nano sensitive material and with organic polymer PANI in-situ polymerization, improve sensor
Sensitivity improves the response regeneration rate of sensor, and sensor is allow to carry out NH in room temperature3Detection, promotes this sensor to exist
Functionization in gas sensitive detection field.
The sensor sensitivity with higher that the present invention is developed, to 100ppm NH3Sensitivity can achieve
31.8；Also there is extremely low Monitoring lower-cut, can detect the NH down to 10ppb3；And it presents extraordinary selectivity, repeat
Property.The planar configuration sensor of flexible of the present invention, manufacture craft is simple, small in size, safe and harmless, has
Important application value.
It is of the present invention a kind of based on PANI@SnO2The NH of nano sensitive material3Gas sensor is planar configuration,
By flexible PET substrate, growth in situ flexible PET substrate upper surface PANI@SnO2Nano sensitive material composition, PET is poly-
Ethylene glycol terephthalate；And the sensor is prepared by following steps:
(1) 1.0~1.6mmol stannic chloride, 2.8~4.5g glucose are dissolved in 25~40mL deionized water, are stirred
It is clarified to solution；
(2) phosphoric acid of 0.7~1.1mmol is added dropwise in above-mentioned solution, stirs 10~30min；
(3) solution that step (2) obtains is transferred in hydrothermal reaction kettle, the hydro-thermal reaction 20 under the conditions of 100~200 DEG C
~30h；
(4) product that step (3) obtains is cooled to room temperature, then uses water and ethyl alcohol alternately centrifuge washing, will
To centrifugation product be dried at 50~100 DEG C；
(5) 1~5h will be calcined at 400~600 DEG C after step (4) centrifugation product drying, obtain SnO2The sensitive material of nanometer
Material；
(6) SnO for obtaining 1~120mg step (5)2Nano sensitive material, 0.1~0.5mmol aniline is dissolved in 10~
30mL, 1~3M hydrochloric acid in, 20~40min of ultrasound；
(7) 0.1~0.5mmol ammonium persulfate is dissolved in the hydrochloric acid of 10~30mL, 1~3M, in ice-water bath stir 20~
60min；
(8) two kinds of solution for obtaining step (6), step (7) mix, and flexible PET lining is then put into mixed solution
1~3h is reacted in ice water mixing bath in bottom；
(9) it is dried at room temperature for after taking out the flexible PET substrate that step (8) obtains, thus the table on flexible PET substrate
PANI SnO is prepared in face2Nano sensitive material film；
(10) device that step (9) obtains is placed 1~2 day at room temperature, to obtain based on PANI@SnO2Nanometer is quick
Feel the NH of material3Sensor.
In gas sensor of the present invention, flexible PET substrate is prepared by following steps:
(1) flexibility that length is 5~15mm, width is 5~10mm will be cut into a thickness of 100~200 μm of flexible PET
PET substrate；
(2) by above-mentioned flexible PET substrate be put into 10~30g/L NaOH aqueous solution at 50~80 DEG C stirring 60~
100min is dried to obtain flexible PET substrate after then successively being washed with deionized water, ethyl alcohol.
Working principle:
For polyaniline as a kind of common conducting polymer, its own is conductive, when we will be based on PANI@SnO2
The flexible NH of nano sensitive material3Sensor is connected on Rigol signal tester and can detect based on PANI@SnO2Nanometer is sensitive
The resistance of material devices.When based on PANI@SnO2The NH of nano sensitive material3When sensor is placed in air, it is acidified in polyaniline
There are a large amount of free hydrogen ion, while PANI and SnO2Between heterogeneous p-n form very narrow depletion layer, be based at this time
PANI@SnO2The device resistance of nano sensitive material is very low.When sensor contacts NH at room temperature3When, NH3Capture in polyaniline
Free hydrogen ion, so that polyaniline is changed into intrinsic imines alkali from conductive inferior amine salt, while depletion layer is obviously widened,
Cause based on PANI@SnO2The device resistance of nano sensitive material increases.The sensitivity that we define sensor herein is S:S
=Rg/Ra, wherein RaFor the aerial resistance of sensor, RgFor sensor contacts NH3Resistance afterwards.
It is prepared by the present invention to be based on PANI@SnO2NH3Sensor has the advantage that
1. by by PANI@SnO2On nano sensitive material in-situ polymerization to flexible PET substrate, method is simple, greatly
It improves to NH3Sensitivity, there is quickly response resume speed, and NH can be detected at room temperature3, in detection level
Aspect has broad application prospects；
2. the sensor stability of exploitation is good, highly reliable, the Monitoring lower-cut of sensor can achieve 10ppb；
3. PANI@SnO prepared by the present invention2NH3Sensor preparation process is simple, the PET substrate used, low in cost.?
It has a good application prospect in terms of environmental monitoring.
Detailed description of the invention
Fig. 1: prepared by the present invention to be based on PANI@SnO2The NH of nano sensitive material3The planar structure schematic diagram of sensor
(left figure), PANI@SnO prepared by the present invention2Nano sensitive material shape appearance figure (right figure), wherein illustration illustrates individually in right figure
PANI@SnO2Pattern；1 is flexible PET substrate, and 2 be PANI@SnO2Nano sensitive material；
Fig. 2: PANI of the present invention FESEM schemes (a), SnO of the present invention2FESEM scheme (b), the present invention
The FESEM of the PASn20 nano sensitive material schemes, and wherein illustration is that the FESEM of single PASn20 nano sensitive material schemes
(c), SnO of the present invention2The TEM of nano sensitive material schemes (d), PASn20 nano sensitive material of the present invention
TEM schemes (e), and the EDS of Sn, N, O of PASn20 nano sensitive material of the invention scheme (f).
Fig. 3: comparative example 1, comparative example 2, embodiment 1, embodiment 2, embodiment 3, embodiment 4 and embodiment 5 are to 10ppm
NH3The sensitivity response figure of gas.(Mole Percentages of SnO2For SnO2Mole, Response be it is sensitive
Degree, NH3Concentration:10ppm is NH3Concentration: 10ppm)
Fig. 4: comparative example 1 and embodiment 4 at room temperature, in 0.5~100ppm NH3Atmosphere medium sensitivity change curve,
Wherein illustration be embodiment 4 at room temperature, in 0.01~0.2ppm NH3Atmosphere medium sensitivity change curve (a), comparative example 1
At room temperature with embodiment 4, in 0.5~100ppm NH3The matched curve figure of atmosphere medium sensitivity variation, wherein illustration is real
Example 4 is applied at room temperature, in 0.01~0.2ppm NH3The matched curve figure (b) of atmosphere medium sensitivity variation.(Response is spirit
Sensitivity, Time are the time, and Concentration is concentration)
Fig. 5: comparative example 1 and embodiment 4 at room temperature to the comparison diagram (a) of the response of 8 kinds of gas with various of 10ppm,
Embodiment 4 is at room temperature to 10ppm NH3Response recovery time curve and repeat linearity curve (figure illustration in b) figure (b).
(Response is sensitivity, and Gas concentration is that gas concentration T ime is time, NH3Concentration is NH3
Concentration)
As shown in Figure 1, the names of the parts are as follows: PET substrate 1, PANI@SnO2Sensitive electrode material 2.
Shown in Fig. 2 (a), obtained PANI is uniform 1-dimention nano threadiness, is put from the part of PANI nanofiber
It is about 48nm that big figure, which can be seen that PANI diameter, forms network structure between fiber.Shown in Fig. 2 (b), SnO obtained2By small
Particle composition.The FESEM of Fig. 2 (c) PASn20 nano sensitive material schemes, it can be seen that PASn20 obtained is dispersed in polyaniline
Middle formation conductive network structure can be seen that PASn20 has class spherical structure from the enlarged drawing of part.Fig. 2 (d) SnO2TEM figure
As it can be seen that SnO obtained2It is microcellular structure.Fig. 2 (e) is that the TEM of PASn20 nano sensitive material schemes, can from figure
Polyaniline-coated is grown in SnO out2Surface.Fig. 2 (f) is that the EDS of PASn20 nano sensitive material schemes, as can be seen from the figure
N element is evenly distributed on SnO2Surface.
From figure 3, it can be seen that with SnO2The increase of nano sensitive material additional amount, sensor is to NH3Sensitivity first mention
It is reduced after height, embodiment 4 is at room temperature to NH3Sensitivity it is maximum, to 10ppm NH3Sensitivity can achieve 5.61.
Fig. 4 (a) be comparative example 2 and embodiment 4 at room temperature, to various concentration NH3The response of (0.5~100ppm) gas
Curve, wherein illustration be embodiment 4 at room temperature, in 0.01~0.2ppm NH3Atmosphere medium sensitivity change curve.It is sensitive
Degree test method: sensor is put into gas bottle first, resistance at this time is measured by the ammeter connecting with sensor, is passed
Aerial resistance value, that is, the R of sensora；Then the NH of 0.5~100ppm is injected into gas bottle using syringe3, pass through measurement
Sensor is obtained in various concentration NH3In resistance value, that is, Rg, according to the defined formula S=R of sensitivity Sg/Ra, by calculating
To the sensitivity of various concentration lower sensor, NH is finally obtained3Concentration-sensitivity standard working curve.It can from figure
The sensitivity of sensor is with NH out3The raising of concentration and increase, while embodiment 4 is for NH3With the inspection down to 10ppb
Survey limit.Fig. 4 (b) shows comparative example 2 and embodiment 4 for 0.5~100ppm concentration NH3The response matched curve of gas meets finger
Exponential model, as can be seen that embodiment 4 is for 0.01~0.2ppm concentration NH from illustration3The response matched curve of gas meets
Linear relationship.
Fig. 5 (a) is comparative example 2 and embodiment 4 at room temperature to the comparison diagram of the response of 8 kinds of gas with various of 10ppm.
It can be seen from the figure that embodiment 4 is to NH3There is preferable selectivity.Fig. 5 (b) is embodiment 4 at room temperature to 10ppm NH3's
Response recovery time curve and repetition linearity curve (illustration).It can be seen from the figure that embodiment 4 is to 10ppm NH3With very fast
Response regeneration rate, response time 109s, recovery time 114s；It can be seen that implementation from the repetition linearity curve of illustration
Example 4 is at room temperature to 10ppm NH3Sensitivity be worth it is relatively stable, it was demonstrated that embodiment 4 obtains acceptable repeatability.
Specific embodiment
Comparative example 1:
SnO is prepared with hydro-thermal method2Nano sensitive material, by SnO2Nano sensitive material makes plane formula NH3Sensor,
Specific manufacturing process:
1. preparing PET substrate: it is 10mm that the PET with a thickness of 125 μm, which is cut into length, and width is the rectangle substrate of 8mm,
Then PET substrate is placed in 20g/L NaOH solution and stirs 90min at 60 DEG C, then successively washed with deionized water, ethyl alcohol
After dry.
2. preparing SnO2Nano sensitive material: 1.4mmol stannic chloride and 4g glucose sugar are dissolved in 35mL deionized water,
Stirring to solution is clarified；Then it is added dropwise the phosphoric acid of 1mmol again, stirs and solution is encased in 50mL hydro-thermal reaction after 20min
It in kettle, is subsequently placed into baking oven, baking oven parameter setting is 160 DEG C, for 24 hours；After reaction, obtained product is cooled to room
Then temperature uses water and ethyl alcohol alternately centrifuge washing, obtained product is dried at 80 DEG C；Dried product exhibited is existed
It is sintered 3 hours at 550 DEG C in Muffle furnace, 2 DEG C/min of heating rate obtains SnO2Nano sensitive material；
3. preparation is based on SnO2The plane formula NH of sensitive material3Sensor: it is coated on PET substrate surface using spin coating method
SnO2(SnO2Powder ultrasonic is distributed in ethanol solution), it is dried at room temperature for；Finally above-mentioned device is placed for 24 hours at room temperature,
To obtain based on SnO2The plane NH of nano sensitive material3Sensor.Comparative example 2:
PANI nano sensitive material is prepared with in-situ oxidizing-polymerizing method, makes plane formula for PANI as nano sensitive material
NH3Sensor, specific manufacturing process:
1. preparing PET substrate: identical as comparative example 1.
2. preparing the plane formula NH based on PANI sensitive material3Sensor: 0.5mmol aniline is dissolved in the hydrochloric acid of 15mL, 1M
In, ultrasonic 30min；0.5mmol ammonium persulfate is dissolved in the hydrochloric acid of 15mL, 1M, 30min is stirred in ice-water bath；By two solution
Mixing, is added a piece of PET substrate, reacts 2h in ice water mixing bath；After the PET of growth in situ PANI is taken out after reaction
It is dried at room temperature for；Above-mentioned device is placed for 24 hours at room temperature, to obtain the plane formula NH based on PANI sensitive material3It passes
Sensor.
Embodiment 1:
SnO is prepared with hydro-thermal method2Nano sensitive material, with PANI@SnO2Nano sensitive material makes plane formula NH3Sensing
Device, wherein SnO2Additive amount be (SnO2/ Ani=2mol%), specific manufacturing process:
By 1.5mg SnO2Nano sensitive material, 0.5mmol aniline are dissolved in the hydrochloric acid of 15mL, 1M, ultrasonic 30min；Its
Remaining device fabrication processes are identical as comparative example 2, obtained NH3Sensor mark is sensor PASn2.
Embodiment 2:
SnO is prepared with hydro-thermal method2Nano sensitive material, with PANI@SnO2Nano sensitive material makes plane formula NH3Sensing
Device, wherein SnO2Additive amount be (SnO2/ Ani=5mol%), specific manufacturing process:
By 3.75mg SnO2Nano sensitive material, 0.5mmol aniline are dissolved in the hydrochloric acid of 15mL, 1M, ultrasonic 30min；Its
Remaining device fabrication processes are identical as comparative example 2, obtained NH3Sensor mark is sensor PASn5.
Embodiment 3:
SnO is prepared with hydro-thermal method2Nano sensitive material, with PANI@SnO2Nano sensitive material makes plane formula NH3Sensing
Device, wherein SnO2Additive amount be (SnO2/ Ani=10mol%), specific manufacturing process:
By 15mg SnO2Nano sensitive material, 0.5mmol aniline are dissolved in the hydrochloric acid of 15mL, 1M, ultrasonic 30min；Remaining
Device fabrication processes are identical as comparative example 2, obtained NH3Sensor mark is sensor PASn10.
Embodiment 4:
SnO is prepared with hydro-thermal method2Nano sensitive material, with PANI@SnO2Nano sensitive material makes plane formula NH3Sensing
Device, wherein SnO2Additive amount be (SnO2/ Ani=20mol%), specific manufacturing process:
By 30mg SnO2Nano sensitive material, 0.5mmol aniline are dissolved in the hydrochloric acid of 15mL, 1M, ultrasonic 30min；Remaining
Device fabrication processes are identical as comparative example 2, obtained NH3Sensor mark is sensor PASn20.
Embodiment 5:
SnO is prepared with hydro-thermal method2Nano sensitive material, with PANI@SnO2Nano sensitive material makes plane formula NH3Sensing
Device, wherein SnO2Additive amount be (SnO2/ Ani=30mol%), specific manufacturing process:
By 45mg SnO2Nano sensitive material, 0.5mmol aniline are dissolved in the hydrochloric acid of 15mL, 1M, ultrasonic 30min；Remaining
Device fabrication processes are identical as comparative example 2, obtained NH3Sensor mark is sensor PASn30.
Plane formula sensor is connected on Rigol signal tester by clip, respectively by comparative example 1, comparative example 2,
Embodiment 1, embodiment 2, embodiment 3, embodiment 4, sensor is placed in air, 10ppm NH obtained by embodiment 53Atmosphere
Middle progress resistance signal test.
Table 1 is respectively with PANI, PANI@2mol.%SnO2, PANI@5mol.%SnO2, PANI@10mol.%SnO2、
PANI@20mol.%SnO2, PANI@30mol.%SnO2、SnO2For sensitive material production flexible flat formula PANI, PASn2,
PASn5、PASn10、PASn20、PASn30、SnO2In 10ppm NH3In 10ppm NH3In sensitivity data.
It is listed in table 1 respectively with PANI, PANI@2mol.%SnO2, PANI@5mol.%SnO2, PANI@10mol.%
SnO2, PANI@20mol.%SnO2, PANI@30mol.%SnO2、SnO2For the flexible flat formula sensor of sensitive material production
PANI、PASn2、PASn5、PASn10、PASn20、PASn30、SnO2In 10ppmNH3In sensitivity.It can from table 1
Out, device is to NH3Response characteristic show first to increase, the trend reduced afterwards, wherein the sensitivity of pure PANI be 1.23, SnO2
The sensitivity of nano sensitive material is 1 (can't detect resistance signal at room temperature), compared with the device obtained by the pure PANI,
The sensitivity of device prepared by PASn20 improves 5.61, reaches maximum sensitivity, NH3Response it is maximum, show
Highest sensitivity characteristic.It can be seen that by mixing SnO in right amount2The sensitivity of sensor can be improved in nano sensitive material.
Claims (3)
1. one kind is based on PANI@SnO2The flexible flat formula ammonia body sensor of nano sensitive material is planar configuration, by soft
Property PET substrate, growth in situ flexible PET substrate upper surface PANI@SnO2Nano sensitive material composition, PET are poly- to benzene
Naphthalate；And the sensor is prepared by following steps:
(1) 1.0~1.6mmol stannic chloride, 2.8~4.5g glucose are dissolved in 25~40mL deionized water, are stirred to molten
Liquid clarification；
(2) phosphoric acid of 0.7~1.1mmol is added dropwise in above-mentioned solution, stirs 10~30min；
(3) solution that step (2) obtains is transferred in hydrothermal reaction kettle, under the conditions of 100~200 DEG C hydro-thermal reaction 20~
30h；
(4) product that step (3) obtains is cooled to room temperature, water and ethyl alcohol alternately centrifuge washing is then used, by what is obtained
Centrifugation product is dried at 50~100 DEG C；
(5) 1~5h will be calcined at 400~600 DEG C after step (4) centrifugation product drying, obtain SnO2Nano sensitive material；
(6) SnO for obtaining 1~120mg step (5)2Nano sensitive material, 0.1~0.5mmol aniline are dissolved in 10~30mL, 1
In the hydrochloric acid of~3M, 20~40min of ultrasound；
(7) 0.1~0.5mmol ammonium persulfate is dissolved in the hydrochloric acid of 10~30mL, 1~3M, in ice-water bath stir 20~
60min；
(8) two kinds of solution for obtaining step (6), step (7) mix, and are then placed in flexible PET substrate, in ice water mixing bath
React 1~3h；
(9) it is dried at room temperature for after taking out the flexible PET substrate that step (8) obtains, thus in flexible PET substrate upper surface system
It is standby to obtain PANI@SnO2Nano sensitive material film；
(10) device that step (9) obtains is placed 1~2 day at room temperature, to obtain based on PANI@SnO2The sensitive material of nanometer
The NH of material3Sensor.
2. as described in claim 1 a kind of based on PANI@SnO2The flexible flat formula ammonia body sensor of nano sensitive material,
It is characterized by: flexible PET substrate, is prepared by following steps,
(1) PET with a thickness of 100~200 μm is cut into the flexible PET substrate that length is 5~15mm, width is 5~10mm；
(2) above-mentioned flexible PET substrate is put into 10~30g/L NaOH aqueous solution 60~100min of stirring at 50~80 DEG C,
Then flexible PET substrate is dried to obtain after successively being washed with deionized water, ethyl alcohol.
3. one kind described in claim 1~2 any one is based on PANI@SnO2The flexible flat formula ammonia of nano sensitive material
Application of the body sensor in terms of atmospheric environment detects ammonia under room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811040243.2A CN108956717A (en) | 2018-09-07 | 2018-09-07 | One kind being based on PANI@SnO2The flexible flat formula ammonia gas sensor of nano sensitive material and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811040243.2A CN108956717A (en) | 2018-09-07 | 2018-09-07 | One kind being based on PANI@SnO2The flexible flat formula ammonia gas sensor of nano sensitive material and its application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108956717A true CN108956717A (en) | 2018-12-07 |
Family
ID=64476084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811040243.2A Pending CN108956717A (en) | 2018-09-07 | 2018-09-07 | One kind being based on PANI@SnO2The flexible flat formula ammonia gas sensor of nano sensitive material and its application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108956717A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580739A (en) * | 2018-12-17 | 2019-04-05 | 电子科技大学 | A kind of flexible exhalation ammonia gas sensor and preparation method thereof based on porous-substrates |
| CN109659070A (en) * | 2018-12-27 | 2019-04-19 | 有研工程技术研究院有限公司 | A kind of flexible conductive film and its application with gas sensitization performance |
| CN110016734A (en) * | 2019-04-16 | 2019-07-16 | 宝鸡文理学院 | A kind of preparation method of near-infrared enhancing room temperature air sensing material |
| CN111254708A (en) * | 2020-03-20 | 2020-06-09 | 西北工业大学 | CNTs/polyaniline-based flexible ammonia gas sensing material and preparation method thereof |
| CN112268940A (en) * | 2020-10-30 | 2021-01-26 | 郑州轻工业大学 | MO for aniline gas sensor2/MO3NMNPs hollow microsphere material and preparation method thereof |
| CN115140761A (en) * | 2022-07-25 | 2022-10-04 | 东北林业大学 | SnO 2 Preparation method of shell hollow sphere nano sensitive material, indirectly heated type ethanol gas sensor and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607590A (en) * | 2017-08-30 | 2018-01-19 | 吉林大学 | One kind is based on the flower-shaped WO of PANI@3The flexible flat formula NH of nano sensitive material3Gas sensor and its application |
| CN108426924A (en) * | 2018-05-03 | 2018-08-21 | 吉林大学 | One kind being based on PANI@Au-In2O3The NH of sensitive material3Gas sensor, preparation method and applications |
-
2018
- 2018-09-07 CN CN201811040243.2A patent/CN108956717A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607590A (en) * | 2017-08-30 | 2018-01-19 | 吉林大学 | One kind is based on the flower-shaped WO of PANI@3The flexible flat formula NH of nano sensitive material3Gas sensor and its application |
| CN108426924A (en) * | 2018-05-03 | 2018-08-21 | 吉林大学 | One kind being based on PANI@Au-In2O3The NH of sensitive material3Gas sensor, preparation method and applications |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580739A (en) * | 2018-12-17 | 2019-04-05 | 电子科技大学 | A kind of flexible exhalation ammonia gas sensor and preparation method thereof based on porous-substrates |
| CN109659070A (en) * | 2018-12-27 | 2019-04-19 | 有研工程技术研究院有限公司 | A kind of flexible conductive film and its application with gas sensitization performance |
| CN110016734A (en) * | 2019-04-16 | 2019-07-16 | 宝鸡文理学院 | A kind of preparation method of near-infrared enhancing room temperature air sensing material |
| CN111254708A (en) * | 2020-03-20 | 2020-06-09 | 西北工业大学 | CNTs/polyaniline-based flexible ammonia gas sensing material and preparation method thereof |
| CN111254708B (en) * | 2020-03-20 | 2022-03-15 | 西北工业大学 | CNTs/polyaniline-based flexible ammonia gas sensing material and preparation method thereof |
| CN112268940A (en) * | 2020-10-30 | 2021-01-26 | 郑州轻工业大学 | MO for aniline gas sensor2/MO3NMNPs hollow microsphere material and preparation method thereof |
| CN112268940B (en) * | 2020-10-30 | 2024-04-16 | 郑州轻工业大学 | MO for aniline gas sensor 2 /MO 3 NMNPs hollow microsphere material and preparation method thereof |
| CN115140761A (en) * | 2022-07-25 | 2022-10-04 | 东北林业大学 | SnO 2 Preparation method of shell hollow sphere nano sensitive material, indirectly heated type ethanol gas sensor and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108956717A (en) | One kind being based on PANI@SnO2The flexible flat formula ammonia gas sensor of nano sensitive material and its application | |
| CN107607590B (en) | Based on the flower-shaped WO of PANI@3The flexible NH of sensitive material3Sensor and its application | |
| CN108426924A (en) | One kind being based on PANI@Au-In2O3The NH of sensitive material3Gas sensor, preparation method and applications | |
| CN109100397A (en) | One kind being based on PANI@WO3The flexible flat formula ammonia gas sensor of hollow sphere nano sensitive material and its application | |
| CN103235019B (en) | Cyclodextrin/grapheme nanometer compound modified electrode, preparation method and usage | |
| CN106770497B (en) | One kind being based on Pt/ α-Fe2O3The acetone gas sensor and preparation method thereof of porous nanoparticles sensitive material | |
| Bai et al. | Enhancement of NO2-sensing performance at room temperature by graphene-modified polythiophene | |
| CN107036741B (en) | A kind of preparation method of the graphene-based pressure sensor of selfreparing | |
| CN109342522B (en) | Polypyrrole/graphene composite material-based resistance type NH3Sensor, preparation method and application thereof | |
| CN104749225A (en) | ZnO/ZnFe2O4 composite sensitive material, preparation method thereof and application of ZnO/ZnFe2O4 composite sensitive material in acetone gas sensor | |
| CN106969860B (en) | A kind of preparation method of intelligence Magnetic driving selfreparing flexible pressure-sensitive sensor | |
| CN102866181A (en) | Polyaniline/ titanium dioxide nanometer composite impedance type thin film gas sensor and preparation method thereof | |
| CN104950027A (en) | Synthesis of graphene/polyaniline/gold nanoparticle composite material and application thereof to dopamine detection | |
| CN105548270B (en) | A kind of toluene gas sensor and preparation method thereof based on α-Fe2O3/SnO2 heterogeneous structural nano linear arrays | |
| CN104807859B (en) | The method of low-temperature original position growth nanostructure metal oxide semiconductor and application | |
| CN102621206A (en) | Method for preparing poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composite modified electrode | |
| CN104118904A (en) | Preparation method and application of three-dimensional hollow multilevel-structured stannic oxide gas-sensitive material | |
| CN104297301A (en) | Ammonia gas sensor based on polyaniline/graphene nanoribbons/silicon dioxide/silicon | |
| CN108169284A (en) | Humidity sensor based on carbon dots doping molybdenum disulfide thin slice and preparation method thereof | |
| CN108508062A (en) | One kind being based on MoO3The triethylamine sensor of nano sensitive material, preparation method and applications | |
| CN110940266B (en) | Preparation method of flexible sensor with angle recognition function | |
| CN101776632A (en) | Water dispersible polyaniline nano-particle gas-sensitive element and method for preparing same | |
| CN103937021B (en) | The preparation method of induced by magnetic field functionalized nano grain molecular imprinting stirring rod Solid-Phase Extraction system | |
| CN110511411A (en) | A kind of preparation method of temperature sensitive flexible membrane, sensor and flexible membrane | |
| CN105439210A (en) | Preparation method of alpha-Fe2O3 micro-nano spheres |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |