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YSZ based mixed-potential type acetone sensor taking NiNb206 as sensitive electrode and preparation method

A hybrid potential-type and sensitive electrode technology, which is applied in the direction of instruments, scientific instruments, and electrochemical variables of materials, can solve the problems of not meeting the real-time self-diagnosis and monitoring requirements of patients, complicated operation, and long time-consuming, etc., and achieve good thermal stability and chemical stability, optimized microstructure, and simple preparation methods

Active Publication Date: 2016-01-20
JILIN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the selective measurement of low-concentration acetone mainly relies on large-scale analytical instruments, including methods such as mass spectrometry and spectroscopy, which have the disadvantages of large volume, high price, complicated operation, and long time-consuming, which obviously cannot meet the real-time self-diagnosis and monitoring of patients. Require

Method used

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  • YSZ based mixed-potential type acetone sensor taking NiNb206 as sensitive electrode and preparation method
  • YSZ based mixed-potential type acetone sensor taking NiNb206 as sensitive electrode and preparation method
  • YSZ based mixed-potential type acetone sensor taking NiNb206 as sensitive electrode and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Preparation of NiNb by Sol-Gel Method 2 o 6 material, NiNb sintered at 800°C 2 o 6(800℃) As a sensitive electrode material, a YSZ-based hybrid potentiometric acetone sensor was fabricated, and the gas-sensing performance of the sensor was tested. The specific process is as follows:

[0046] 1. Make a Pt reference electrode: use Pt slurry to make a Pt reference electrode with a size of 0.5mm×2mm and a thickness of 15μm on one end of the upper surface of the YSZ substrate with a length and width of 2×2mm and a thickness of 0.2mm, and fold it in half with a Pt wire Then stick the electrode lead wire on the middle position of the reference electrode; then bake the YSZ substrate at 100°C for 1.5 hours, and then sinter the YSZ substrate at 1000°C for 1 hour, so as to eliminate the terpineol in the platinum paste, and finally reduce the to room temperature.

[0047] 2. Making NiNb 2 o 6 Sensitive electrode: first prepare NiNb by sol-gel method 2 o 6 Material. Weigh 3m...

Embodiment 2

[0053] NiNb sintered at 1200°C 2 o 6 The material is used as a sensitive electrode material to make an acetone sensor, and the manufacturing process is as follows:

[0054] The NiNb prepared by the aforementioned method 2 o 6 Sensitive electrode material NiNb was obtained by sintering at 1200°C in a muffle furnace 2 o 6(1200℃) , the device manufacturing process is the same as in Example 1.

Embodiment 3

[0056] NiNb sintered at 1000°C 2 o 6 The material is used as a sensitive electrode material to make an acetone sensor, and the manufacturing process is as follows:

[0057] The NiNb prepared by the aforementioned method 2 o 6 Sensitive electrode material NiNb was obtained by sintering at 1000°C in a muffle furnace 2 o 6(1000℃) , the device manufacturing process is the same as in Example 1.

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Abstract

The invention relates to an YSZ based mixed-potential type acetone sensor taking NiNb206 as a sensitive electrode and a preparation method. The YSZ based mixed-potential type acetone sensor taking NiNb206 as the sensitive electrode is mainly used for detecting atmospheric environment and diabetes mellitus. The sensor comprises a Al2O3 ceramic plate with a Pt heating electrode, a YSZ base plate, a Pt reference electrode and a NiNb206 sensitive electrode in turn, wherein the reference electrode and the sensitive electrode are independent from each other and are symmetrically prepared at the two ends of the upper surface of the YSZ base plate, and the lower surface of the YSZ base plate is adhered to the Al2O3 ceramic plate with the Pt heating electrode. According to the YSZ based mixed-potential type acetone sensor taking NiNb206 as the sensitive electrode, the YSZ is served as an ionic conductive layer, the NiNb206 with high electrochemical catalytic activity is served as the sensitive electrode, and the change in microstructure of the sensitive electrode layer is realized through different calcining temperature (at 800-1200 DEG C), so that the purpose of increasing the sensitivity is achieved.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, in particular to a NiNb 2 o 6 A YSZ-based mixed potential type acetone sensor which is a sensitive electrode and a preparation method thereof are mainly used for the detection of atmospheric environment and diabetes. Background technique [0002] Acetone, as an organic solvent commonly used in laboratory and industrial production, has been widely used in dissolving plastic products, material purification and pharmaceutical industry. Inhalation of high concentrations of acetone can cause headaches, fatigue, and even coma symptoms, which seriously damage the nervous system of the human body. It is very necessary to detect high concentration of acetone gas in the workplace and the environment. In addition, clinical medicine shows that acetone can be produced in diabetics, and the concentration of acetone in the breath of patients is significantly higher than that of normal people. The concent...

Claims

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Application Information

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IPC IPC(8): G01N27/417G01N27/30
Inventor 卢革宇刘方猛马健梁喜双孙鹏
Owner JILIN UNIV
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