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Flexible nitrogen dioxide gas sensor and preparation method thereof

A gas sensor and nitrogen dioxide technology, applied in zinc oxide/zinc hydroxide, instruments, scientific instruments, etc., can solve the problems of less research in the field of flexible wearables, long recovery time, low response value, etc., and achieve short response time, short recovery time, avoiding shedding effect

Pending Publication Date: 2022-05-24
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] And currently most of the NO 2 The substrates of gas sensors are all rigid, and there are few studies on the field of flexible wearables
Even in the developed flexible NO 2 In gas sensors, there are also common problems such as low response value, long recovery time, and poor selectivity.

Method used

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  • Flexible nitrogen dioxide gas sensor and preparation method thereof
  • Flexible nitrogen dioxide gas sensor and preparation method thereof
  • Flexible nitrogen dioxide gas sensor and preparation method thereof

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Embodiment Construction

[0033] In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstance...

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Abstract

The invention discloses a flexible nitrogen dioxide gas sensor and a preparation method thereof.The preparation method comprises the steps that a flexible substrate is subjected to ultrasonic treatment, impurities such as dust on the surface are removed, then the flexible substrate subjected to ultrasonic treatment is fully soaked in a reduced graphene oxide solution, and after natural drying, the sensor attached with a reduced graphite oxide layer is formed; a flexible matrix structure is fully soaked in a reduced graphite oxide solution, it is ensured that reduced graphite oxide is fully attached to the surface of a flexible matrix and is prevented from falling off, then the flexible matrix structure is fully soaked in a zinc oxide quantum dot solution, and the flexible nitrogen dioxide gas sensor is obtained. The reduced graphite oxide layer and the zinc oxide quantum dot layer are sequentially attached to the surface of the flexible body, so that falling of the attached RGO film can be effectively avoided when the flexible body is bent and folded, and the sensing performance of NO2 gas is effectively improved.

Description

technical field [0001] The invention relates to the field of nitrogen dioxide gas detection and flexible wearability, in particular to a flexible nitrogen dioxide gas sensor and a preparation method thereof. Background technique [0002] Nitrogen dioxide (NO 2 ) is an extremely harmful gas that can cause severe damage to lung tissue, exposure to NO 2 The gas environment will seriously threaten the safety of human life. Therefore, in chemical plants, etc. NO 2 Real-time detection of NO in environments where gas leakage is likely to occur 2 Gas concentration, development of wearable NO suitable for workers 2 Gas sensors are of great significance. [0003] At present, most of the NO 2 The substrates of gas sensors are all rigid, and there are few studies in the field of flexible wearables. Even in the developed flexible NO 2 In gas sensors, there are also common problems such as low response value, long recovery time, and poor selectivity. Therefore, R & D has high res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12G01N33/00C01G9/02C01B32/184B82Y40/00
CPCG01N27/125G01N33/0037C01G9/02C01B32/184B82Y40/00C01P2004/64Y02A50/20
Inventor 林启敬张福政赵娜孙林赵立波卢德江杨萍蒋庄德
Owner XI AN JIAOTONG UNIV
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