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Flexible plane-type NH3 gas sensor based on PANI (at) flower-like WO3 nanoscale sensitive material and application thereof

A gas sensor and sensitive material technology, applied in nanotechnology for sensing, nanotechnology for materials and surface science, material resistance, etc., can solve problems such as increased operating temperature and energy consumption limitations, and achieve reliability Strong, simple method, simple production process

Active Publication Date: 2018-01-19
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest disadvantage of these materials is that the prepared sensors usually respond to ammonia at very high temperatures, and the high operating temperature greatly increases energy consumption and limits the practical application of the developed materials.

Method used

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  • Flexible plane-type NH3 gas sensor based on PANI (at) flower-like WO3 nanoscale sensitive material and application thereof
  • Flexible plane-type NH3 gas sensor based on PANI (at) flower-like WO3 nanoscale sensitive material and application thereof
  • Flexible plane-type NH3 gas sensor based on PANI (at) flower-like WO3 nanoscale sensitive material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] With PANI@2mol.% flower-like WO 3 Making NH as a nanosensitive material 3 The sensor, its manufacturing process is:

[0056] In PANI@2mol.% flower-like WO 3 Making NH as a nanosensitive material 3 Add 2.3 mg of the flower-like WO prepared in Comparative Example 1 during the in-situ polymerization of the sensor 3 Nano-sensitive materials, and the rest of the device manufacturing process is the same as that of Comparative Example 2, which is marked as sensor PAW2.

Embodiment 2

[0058] With PANI@5mol.% flower-like WO 3 Making NH as a nanosensitive material 3 The sensor, its manufacturing process is:

[0059] In PANI@5mol.% flower-like WO 3 Making NH as a nanosensitive material 3 Add 5.8 mg of the flower-shaped WO prepared in Comparative Example 1 during the in-situ polymerization of the sensor3 Nano-sensitive materials, and the rest of the device manufacturing process is the same as that of Comparative Example 2, which is marked as sensor PAW5.

Embodiment 3

[0061] With PANI@10mol.% flower-like WO 3 Making NH as a nanosensitive material 3 The sensor, its manufacturing process is:

[0062] In PANI@10mol.% flower-like WO 3 Making NH as a nanosensitive material 3 Add 11.6 mg of the flower-shaped WO prepared in Comparative Example 1 during the in-situ polymerization of the sensor 3 Nano-sensitive materials, and the rest of the device manufacturing process is the same as that of Comparative Example 2, which is marked as sensor PAW10.

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Abstract

A flexible plane-type NH3 gas sensor based on a PANI (at) flower-like WO3 nanoscale sensitive material and application thereof belong to the technical field of gas sensors. The flexible plane-type NH3gas sensor of the invention is composed of a PET substrate with two mutually independent interdigital gold electrodes of 80-120 nm thick vapor-plated on the upper surface and a PANI(at) flower-like WO3 nanoscale sensitive material which is grown in situ on the upper surface of the PET substrate and the interdigital gold electrodes. The invention develops a high-performance NH3 gas sensor which has quick response to NH3 in the atmospheric environment at room temperature. Sensitivity of the sensor to 100 ppm NH3 reaches up to 20.1, and lower detection limit can reach 500 ppb. The developed sensor also has quick response recovery rate. In addition, the sensor also shows good selectivity and repeatability, and has a wide application prospect in the field of room-temperature detection of NH3 in the atmospheric environment and in the field of flexible electronic devices.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, in particular to a sensor based on PANI@flower-shaped WO 3 Flexible planar NH for nano-sensitive materials 3 Gas sensor and its detection of NH at room temperature in atmospheric environment 3 aspects of application. Background technique [0002] Ammonia (NH 3 ) is a colorless gas with a pungent odor and is highly corrosive to the eyes and respiratory organs. According to the national standard "Occupational Exposure Limits of Hazardous Factors in the Workplace GBZ2-2002", the workshop NH 3 The maximum allowable concentration is 40ppm. Therefore, the development of NH with high sensitivity, low detection limit, detectable at room temperature and low price 3 Gas sensors have important practical significance. [0003] In fact, over the past few years, around NH 3 The research on sensors has been continuously deepened, and various types of NH 3 Sensors, such as traditional oxide semicond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12B82Y15/00B82Y30/00
Inventor 卢革宇李思琦刘方猛孙鹏梁喜双高原刘凤敏
Owner JILIN UNIV
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