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Preparation method of ZnO nanofiber gas sensitive material

A technology of gas-sensitive materials and nanofibers, applied in the field of gas-sensitive sensors, can solve problems such as fire, poisoning and even explosion increase, and achieve fast response and recovery time and high sensitivity

Inactive Publication Date: 2017-09-15
JIANGSU SHIRUI ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, incidents such as fires, poisoning and even explosions caused by leakage of liquefied petroleum gas and natural gas are increasing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of ZnO nanofiber gas sensitive material, comprising the following steps:

[0018] Step 1, in parts by weight, add 8 parts of PVA to 100 parts of deionized water, swell, then add 0.5 part of sodium alginate, 0.2 part of citric acid, and 0.1 part of glucose, heat to 80 ° C, keep warm for 6 hours, and obtain the base body fluid;

[0019] Step 2, in parts by weight, C 4 h 6 o 4 Zn·2H 2 O 10 parts, La(NO 3 ) 3 ·6H 2 3 parts of O, Ce(NO 3 ) 3 ·6H 2 Add 1 part of O to the base liquid obtained in step 1, heat to 50° C., keep warm for 40 min, and add 2 parts of absolute ethanol dropwise while stirring to obtain a spinning solution;

[0020] Step 3, electrospinning the spinning solution obtained in step 2, and collecting fibers;

[0021] Step 4, sintering the fiber obtained in step 3 in a vacuum tube furnace, to obtain.

[0022] Wherein, in step 1, 0.1 part of sodium dodecylbenzenesulfonate, a surfactant, is also added, and the swelling condition ...

Embodiment 2

[0028] A preparation method of ZnO nanofiber gas sensitive material, comprising the following steps:

[0029] Step 1, in parts by weight, add 9 parts of PVA to 100 parts of deionized water, swell, then add 0.7 parts of sodium alginate, 0.3 parts of citric acid, and 0.2 parts of glucose, heat to 85 ° C, keep warm for 6 hours, and obtain the base body fluid;

[0030] Step 2, in parts by weight, C 4 h 6 o 4 Zn·2H 2 13 parts of O, La(NO 3 ) 3 ·6H 2 O 4 parts, Ce(NO 3 ) 3 ·6H 2 Add 2 parts of O to the matrix liquid obtained in step 1, heat to 55° C., keep warm for 40 min, and add 4 parts of absolute ethanol dropwise while stirring to obtain a spinning solution;

[0031] Step 3, electrospinning the spinning solution obtained in step 2, and collecting fibers;

[0032] Step 4, sintering the fiber obtained in step 3 in a vacuum tube furnace, to obtain.

[0033] Wherein, in step 1, 0.2 parts of sodium dodecylbenzenesulfonate, a surfactant, is also added, and the swelling con...

Embodiment 3

[0039] A preparation method of ZnO nanofiber gas sensitive material, comprising the following steps:

[0040] Step 1, in parts by weight, add 10 parts of PVA to 100 parts of deionized water, swell, then add 0.9 part of sodium alginate, 0.4 part of citric acid, and 0.3 part of glucose, heat to 80 ° C, keep warm for 6 hours, and obtain the base body fluid;

[0041] Step 2, in parts by weight, C 4 h 6 o 4 Zn·2H 2 17 parts of O, La(NO 3 ) 3 ·6H 2 O 4 parts, Ce(NO 3 ) 3 ·6H 2 Add 3 parts of O to the base liquid obtained in step 1, heat to 50° C., keep warm for 40 min, and add 2 parts of absolute ethanol dropwise while stirring to obtain a spinning solution;

[0042] Step 3, electrospinning the spinning solution obtained in step 2, and collecting fibers;

[0043] Step 4, sintering the fiber obtained in step 3 in a vacuum tube furnace, to obtain.

[0044] Wherein, in step 1, 0.2 parts of sodium dodecylbenzenesulfonate, a surfactant, is also added, and the swelling conditi...

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PUM

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Abstract

The invention provides a preparation method of a ZnO nanofiber gas sensitive material. The preparation method comprises the steps of firstly adding PVA into deionized water for swelling, adding sodium alginate, citric acid and glucose, heating, maintaining the temperature so as to obtain matrix liquid, adding C4H6O4Zn.2H2O, La(NO3)3.6H2O and Ce(NO3)3.6H2O, heating, maintaining the temperature, dropwise adding absolute ethyl alcohol while stirring so as to obtain a spinning solution, carrying out electrostatic spinning, putting collected fibers into a vacuum tubular furnace, and sintering, so as to obtain the ZnO nanofiber gas sensitive material. The ZnO nanofiber gas sensitive material preparation by virtue of the preparation method has very high sensitivity to acetone and H2S and is relatively short in response time and recovery time.

Description

technical field [0001] The invention belongs to the technical field of gas-sensitive sensors, and in particular relates to a preparation method of a ZnO nanofiber gas-sensitive material. Background technique [0002] In recent years, gas leakage accidents often occur in the process of use, transportation, and production, and cause a series of explosions and fires. Most of these gases are toxic, harmful, flammable and explosive, and these gases are mainly It is produced by the development of science and technology, the progress of industrial production, the gradual expansion of production scale, and the continuous increase of product categories. It will also cause serious pollution to the atmosphere or poison people. These gases have many potential dangers. Then endanger the property safety of human beings, and seriously endanger the personal safety of human beings. At the same time, with the continuous improvement of living standards, liquefied petroleum gas and natural g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08
CPCD01F9/08
Inventor 汪洋李训红汪雪婷
Owner JIANGSU SHIRUI ELECTRONICS CO LTD