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Butanol gas sensitive material and preparation method thereof, and butanol gas sensitive device and preparation method thereof

A gas-sensing material and gas-sensing device technology, applied in the field of semiconductor gas-sensing components, can solve the problems of high response sensitivity and low working temperature, and achieve the effect of high sensitivity and high selectivity

Active Publication Date: 2018-10-02
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no mature n-butanol gas-sensing material in China, so preparing a n-butanol gas-sensing material with high response sensitivity, low working temperature, ultra-low detection limit and long-term stability and its gas-sensing element will have great potential. market prospect

Method used

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  • Butanol gas sensitive material and preparation method thereof, and butanol gas sensitive device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of n-butanol gas sensor

[0032] (1) Weigh 70.12g (0.2mol) SnCl 4 ·5H 2 O was dissolved in 2L of water, and 42.0g (0.2mol) of C 8 h 8 o 7 ·H 2 O was dissolved in 2L of water, and the two solutions were mixed uniformly to obtain solution I;

[0033] (2) 47.59g (0.2mol) CoCl 2 ·6H 2 O was dissolved in 2L of water to obtain solution II;

[0034] (3) Mix and stir the solution I and the solution II under magnetic stirring, add 2L of 0.6mol / L NaOH solution and stir for 15-30min, add 2L of 1.2mol / L NaOH solution and stir for 15min to obtain a mixed solution, then The resulting mixed solution was transferred to a reactor for solvothermal reaction, and reacted at 180°C for 12 hours, then the reactor was naturally cooled to room temperature, and the reaction product was suction filtered, washed, and dried to obtain the precursor CoSn(OH) 6 Nano powder.

[0035] 4) The obtained precursor CoSn(OH) 6 Put the nano powder into a muffle furnace and heat up to 300...

Embodiment 2

[0039] Preparation of n-butanol gas sensor

[0040] (1) Weigh 2.104g (6mmol) SnCl 4· 5H 2 O was dissolved in 20mL water, 1.260g (6mmol) C 8 h 8 o 7 ·H 2 O was dissolved in 20mL of water, and the two solutions were mixed uniformly to obtain solution Ⅰ;

[0041] (2) 1.428g (6mmol) CoCl 2 ·6H 2 O was dissolved in 20mL of water to obtain solution II;

[0042] (3) Mix and stir the solution I and the solution II under magnetic stirring, add 20mL of 3mol / L NaOH solution and stir for 15-30min, add 20mL of 4.8mol / L NaOH solution and stir for 15min to obtain a mixed solution, and then the obtained The mixed solution was transferred into a reactor for solvothermal reaction, and reacted at 180°C for 6h, then the reactor was naturally cooled to room temperature, and the reaction product was suction filtered, washed, and dried to obtain the precursor CoSn(OH) 6 Nano powder.

[0043] 4) The obtained precursor CoSn(OH) 6 Put the nano powder into a muffle furnace and heat up to 300°...

Embodiment 3

[0047] Preparation of n-butanol gas sensor

[0048] (1) Weigh 2.805g (8mmol) SnCl 4 ·5H 2 O was dissolved in 20mL water, 1.680g (8mmol) C 8 h 8 o 7 ·H 2 O was dissolved in 20mL of water, and the two solutions were mixed uniformly to obtain solution Ⅰ;

[0049] (2) 1.903g (8mmol) CoCl 2 ·6H 2 O was dissolved in 20mL of water to obtain solution II;

[0050] (3) Under magnetic stirring, the solution I and the solution II are mixed and stirred evenly, adding 20mL of 3.6mol / L NaOH solution and stirring for 15-30min, adding 20mL of 6.4mol / L NaOH solution and stirring for 15min to obtain a mixed solution, then The resulting mixed solution was transferred to a reactor for solvothermal reaction, and reacted at 120°C for 6h, then the reactor was naturally cooled to room temperature, and the reaction product was suction filtered, washed, and dried to obtain the precursor CoSn(OH) 6 Nano powder.

[0051] 4) The obtained precursor CoSn(OH) 6 Put the nano powder into a muffle fur...

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Abstract

The invention relates to a butanol gas sensitive material and a preparation method thereof, and a butanol gas sensitive device and a preparation method thereof. The butanol gas sensitive material is aCoSnO3 nano-powder and of a hollow cube structure, and has particle size of 80 to 150 nm. The preparation method of the gas sensitive material comprises the following: a stannic chloride aqueous solution and a citric acid solution are mixed to obtain solution I; a cobalt chloride aqueous solution is mixed with the solution I, NaOH or KOH is added and stirred, and NaOH or KOH is added again and stirred to obtain a mixed solution, wherein the molar ratios of NaOH or KOH added first and NaOH or KOH added second to stannic chloride are 6-10 to 1 and 12-16 to 1 respectively; the mixed solution issubject to hydrothermal reaction, a reaction product is subject to suction filtration, washing and drying to obtain a precursor, and the precursor is heated and calcined to obtain a cobaltous stannatenano-powder. The gas sensitive material has high sensitivity and good selectivity to butanol, and the prepared gas sensitive device has the detection function which is highly sensitive to butanol gas.

Description

technical field [0001] The invention relates to the technical field of semiconductor gas-sensing elements, in particular to a n-butanol gas-sensing material and its preparation, a n-butanol gas-sensing device and its preparation method. Background technique [0002] N-butanol is mainly used to make n-butyl plasticizers of phthalic acid, aliphatic dibasic acid and phosphoric acid. They are widely used in various plastics and rubber products, and are also used in the production of butyraldehyde and butyric acid in organic synthesis. , butylamine and butyl lactate etc. raw materials. It is also an extractant for oils, drugs (such as antibiotics, hormones and vitamins) and spices, an additive for alkyd resin coatings, etc., and can also be used as a solvent for organic dyes and printing inks, and a dewaxing agent. N-butanol is volatile, and n-butanol in the air can irritate people and affect their health, and it is easy to form an explosive mixture with air when the concentrati...

Claims

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Application Information

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IPC IPC(8): C01G51/00B82Y40/00G01N27/00
CPCB82Y40/00C01G51/00C01P2004/03C01P2004/38C01P2004/62C01P2004/64G01N27/00
Inventor 林志东李婷陈喆
Owner WUHAN INSTITUTE OF TECHNOLOGY
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