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A kind of preparation method of cobalt oxide/rgo organic alcohol molecule sensitive film

A sensitive film and organic alcohol technology, applied in liquid chemical plating, metal material coating process, coating, etc., can solve problems such as poor anti-interference ability, weak selectivity, and failure to meet fine detection requirements, and achieve operational Convenience, controllability, and quick response/recovery effects

Active Publication Date: 2021-12-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the outstanding problems in the gas-sensing performance of cobalt oxide compounds are that the selectivity is not strong, the anti-interference ability is poor, and it cannot meet the fine detection requirements in the industry.

Method used

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  • A kind of preparation method of cobalt oxide/rgo organic alcohol molecule sensitive film
  • A kind of preparation method of cobalt oxide/rgo organic alcohol molecule sensitive film
  • A kind of preparation method of cobalt oxide/rgo organic alcohol molecule sensitive film

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Experimental program
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Effect test

Embodiment 1

[0031] 1) Analytical pure Co(CH 3 COO) 2 4H 2 O was fully dissolved in deionized water, and the pH value of the solution was adjusted to 2.0 with acetic acid; fully stirred for 1 hour to obtain a red transparent solution A, and the Co in the solution 2+ The concentration is 0.5mmol / mL;

[0032] 2) Uniformly disperse GO in anhydrous ethanol solvent, and perform ultrasonic treatment, specific ultrasonic conditions: frequency 30Hz, power 200W, time 30min, to obtain solution B, whose graphene oxide concentration is 0.5mg / mL;

[0033] 3) Mix solutions A and B according to the volume ratio of 1:0.2, so that graphene oxide and Co(CH 3 COO) 2 4H 2 The mass ratio of O is 1 mg: 5.0 mg to obtain a mixed solution C;

[0034] 4) Add the mixed solution C into the microwave hydrothermal reaction kettle, the filling ratio is 50%, put the pre-cleaned silicon substrate into the reaction kettle, then seal the reaction kettle, install it in the microwave hydrothermal instrument, select the ...

Embodiment 2

[0037] 1) Analytical pure Co(CH 3 COO) 2 4H 2 O was fully dissolved in deionized water, and the pH value of the solution was adjusted to 3.0 with acetic acid; fully stirred for 1 hour to obtain a red transparent solution A, and the Co in the solution 2+ The concentration is 0.6mmol / mL;

[0038] 2) Evenly disperse GO in anhydrous ethanol solvent, and perform ultrasonic treatment, specific ultrasonic conditions: frequency 30Hz, power 200W, time 30min, to obtain solution B, whose graphene oxide concentration is 1.0mg / mL;

[0039] 3) Mix solutions A and B according to the volume ratio of 1:0.2, so that graphene oxide and Co(CH 3 COO) 2 4H 2 The mass ratio of O is 1mg:10.0mg, obtains mixed solution C;

[0040] 4) Add the mixed solution C into the microwave hydrothermal reaction kettle, the filling ratio is 67%, put the pre-cleaned silicon substrate into the reaction kettle, then seal the reaction kettle, install it in the microwave hydrothermal instrument, select the control ...

Embodiment 3

[0043] 1) Analytical pure Co(CH 3 COO) 2 4H 2 O was fully dissolved in deionized water, and the pH value of the solution was adjusted to 6.0 with acetic acid; a red transparent solution A was obtained by fully stirring for 1 h, and Co in the solution 2+ The concentration is 1.2mmol / mL;

[0044] 2) Uniformly disperse GO in anhydrous ethanol solvent, and perform ultrasonic treatment. The specific ultrasonic conditions are: frequency 30Hz, power 200W, time 30min, to obtain solution B, whose graphene oxide concentration is 2.0mg / mL;

[0045] 3) Mix solution A and B according to the volume ratio of 1:1.5, so that graphene oxide and Co(CH 3 COO) 2 4H 2 The mass ratio of O is 1mg: 12.0mg, and the mixed solution C is obtained;

[0046] 4) Add the mixed solution C into the microwave hydrothermal reaction kettle, the filling ratio is 30%, put the pre-cleaned silicon substrate into the reaction kettle, then seal the reaction kettle, install it in the microwave hydrothermal instrume...

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Abstract

A kind of preparation method of cobalt oxide / rGO organic alcohol molecule sensitive film, Co(CH 3 COO) 2 4H 2 O was dissolved in water, and the pH was adjusted to 2.0-8.0 to obtain a red transparent solution A; GO was evenly dispersed in absolute ethanol to obtain a solution B; the red transparent solution A and solution B were mixed and added to microwave hydrothermal In the reaction kettle, add the silicon substrate, install the reaction kettle into the microwave hydrothermal instrument, select the temperature control mode or the pressure control mode to react, transfer the solution to the container and install the container in the microwave ultrasonic ultraviolet light combined catalysis In the synthesizer, microwave and ultraviolet light treatment were performed at the same time to obtain cobalt oxide / rGO organic alcohol molecule sensitive film. The composite material prepared by the invention is sensitive to alcohol gas, has fast response / recovery ability, and can be used in sensitive materials. Because the method adopts a new synthesis process, the operation is convenient and the product quality is high.

Description

technical field [0001] The invention relates to the preparation of a semiconductor-type sensitive film, in particular to a preparation method of a cobalt oxide / rGO organic alcohol molecule sensitive film. Background technique [0002] Gas-sensitive materials are functional materials used to test whether the atmosphere contains a certain type of gas. In recent years, it has been widely used in industrial production and daily life, and VOC-sensitive materials have attracted much attention in scientific research. [0003] Cobalt oxide Co x o y It has the properties of storage, recording, catalysis and sensitivity to alcohol molecules, and is widely used in scenarios that require specific recognition of alcohol molecules. At present, the outstanding problems in the gas-sensing performance of cobalt oxide compounds are that the selectivity is not strong, the anti-interference ability is poor, and it cannot meet the fine detection requirements in the industry. Contents of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/12
CPCC23C18/1216C23C18/1245C23C18/125C23C18/1287
Inventor 卢靖田家豪乔万林卢俊杰魏冲
Owner SHAANXI UNIV OF SCI & TECH
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