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Citation: HU Ming-Jiang, JIN Bing-Ying. Research on Film Type Acetone Sensor Based on Copper Oxide/Zinc Oxide Heterostructure Nanoflower[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(3): 363-370. doi: 10.19756/j.issn.0253-3820.181529 shu

Research on Film Type Acetone Sensor Based on Copper Oxide/Zinc Oxide Heterostructure Nanoflower

HU Ming-Jiang ^1, ,
JIN Bing-Ying ²

1.
School of Energy and Building Environmental Engineering, Henan University of Urban Construction, Pingdingshan 467036, China;
2.
Institute of Mechanical & Electrical Engineering, Zhengzhou Railway Vocational & Technical College, Zhengzhou 451460, China

Received Date: 13 August 2018
Revised Date: 19 November 2018

Fund Project: This work was supported by the Natural Science Foundation of He'nan Province (No. 182300410264), the Science and Technology Foundation of He'nan Province (No. 182102210225) and the Educational Commission of He'nan Province of China (No.18A470002).

The copper oxide/zinc oxide (CuO/ZnO) heterostructure nanoflower was prepared by low-temperature hydrothermal method. A new film-type acetone gas sensor was designed by transferring CuO/ZnO nanoflower onto aluminum plate with platinum-inter digital electrodes using dip-coating method. The crystalline phase and microstructure of CuO/ZnO nanoflower were displayed using X-ray diffraction (XRD), scanning electron microscope (SEM) and high resolution transmission electron microscopy (HRTEM). Sensitive mechanism and electrochemical characteristic of CuO/ZnO were analyzed by X-ray photoelectron spectroscopy (XPS). These characteristic tests of acetone gas sensor were carried out on the traits of sensitive performance, temperature, dynamic response, selectivity and stability in gas sensor test system. The conclusion demonstrated that the acetone gas sensor based on CuO/ZnO nanoflower presented a good linear range (10-300 mg/m³ acetone) at the operating temperature of 200℃. Dynamic response time and recover time of sensor to 100 mg/m³ acetone were 1.8 and 10.7 s, respectively. This kind of sensor showed good anti-disturbance to these gases, such as NO, CO, Formaldehyde, methanol and 1,3-butadiene. Standard deviation of acetone sensor response was 0.107 after it was applied continually on automobile about 50 days.
- Zinc oxide,
- Nanoflower,
- Sensor,
- Acetone,
- Heterostructure
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