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CeO2-based acetone sensor with SrMnO2 as sensitive electrode and preparation method and application of CeO2-based acetone sensor

A sensitive electrode and sensor technology, applied in instruments, scientific instruments, and material analysis through electromagnetic means, can solve problems such as difficult to obtain high sensitivity and low concentration acetone detection, and achieve excellent ion conductivity and chemical stability , the conditions are easy to control, and the preparation method is simple

Inactive Publication Date: 2018-03-30
JILIN UNIV
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Problems solved by technology

However, the hybrid potentiometric sensor based on solid electrolyte YSZ and oxide sensitive electrodes has an operating temperature of more than 800 ° C. It is difficult to obtain high sensitivity at such a high temperature, and it is difficult to detect low-concentration acetone.

Method used

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  • CeO2-based acetone sensor with SrMnO2 as sensitive electrode and preparation method and application of CeO2-based acetone sensor
  • CeO2-based acetone sensor with SrMnO2 as sensitive electrode and preparation method and application of CeO2-based acetone sensor
  • CeO2-based acetone sensor with SrMnO2 as sensitive electrode and preparation method and application of CeO2-based acetone sensor

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Embodiment 1

[0042] Preparation of SrMnO by Sol-Gel Method 3 material, SrMnO sintered at 1000°C 3 Making CeO as a Sensitive Electrode Material 2 Based hybrid potentiometric acetone sensor, and test the gas sensing performance of the sensor, the specific process is as follows:

[0043] 1. Make a Pt reference electrode: CeO with a length and width of 2×2mm and a thickness of 0.2mm 2 Use Pt paste on one side of the upper surface of the substrate to make a layer of Pt reference electrode with a size of 0.5mm×2mm and a thickness of 20μm. At the same time, use a Pt wire with a length of 1cm to fold in half, and glue the bend in the middle of the reference electrode with Pt paste lead out the electrode leads at the position; on the side opposite to the reference electrode, also fold a 1cm Pt wire in half, and stick it on the CeO 2 On the surface of the substrate, the electrode leads are drawn out; then the CeO 2 The substrate was baked under an infrared lamp for 1 hour, and then the CeO 2 Th...

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Abstract

The invention discloses a CeO2-based hybrid potential acetone sensor with SrMnO2 as a sensitive electrode and a preparation method and application of the CeO2-based acetone sensor in detection on atmospheric environments and diabetic ketoacidosis detection, and belongs to the technical field of gas sensors. The sensor consists of an Al2O3 ceramic plate with a Pt heating electrode, a CeO2 substrate, a Pt reference electrode and an SrMnO3 sensitive electrode, wherein the reference electrode and the sensitive electrode are separately and symmetrically arranged at two ends of the upper surface ofthe CeO2 substrate; and the lower surface of the CeO2 substrate is adhered to the Al2O3 ceramic plate with the Pt heating electrode. According to the sensor, a novel high-conductivity solid electrodematerial CeO2 is adopted as an ionic conductive layer, SrMnO3 with high electric chemical catalysis activity is adopted as the sensitive electrode, and the purposes of improving sensitivity and shortening response recovery time are achieved. In addition to high sensitivity, the sensor also has a relatively low lower detection limit, a very short response time and very high repeatability and stability.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, in particular to a sensor based on SrMnO 3 Novel CeO for Sensitive Electrode 2 Based hybrid potential type acetone (acetone) sensor, preparation method and application thereof in the detection of atmospheric environment or diabetic ketoacidosis. Background technique [0002] With the continuous development of industry, the application of acetone is becoming more and more common. Acetone is mainly used as a solvent in industries such as explosives, plastics, rubber, fiber, leather, grease, spray paint, etc. It can also be used as a solvent for the synthesis of enone, acetic anhydride, iodoform, polyisoprene rubber, methacrylic acid, etc. An important raw material for methyl ester, chloroform, epoxy resin and other substances. Acetone, also known as dimethyl ketone, is the simplest saturated ketone. It is a colorless transparent liquid with a special spicy smell. Soluble in water and organ...

Claims

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Application Information

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IPC IPC(8): G01N27/406G01N27/407
CPCG01N27/406G01N27/4072G01N27/4074G01N27/4075
Inventor 杨雪卢革宇梁喜双孙鹏刘方猛刘凤敏高原
Owner JILIN UNIV
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