A ZnO Gas Sensor with an Abnormal Response to Hydrogen

ZnO is a commonly used material for hydrogen gas sensors. In this study, a ZnO nanofiber film with a diameter of approximately 60 nm was synthesized by the electrospinning method. Compared to previously reported ZnO hydrogen gas sensors, an abnormal phenomenon was observed here, where the resistance...

Full description

Saved in:
Bibliographic Details
Published inEnergies (Basel) Vol. 16; no. 15; p. 5847
Main Authors Sun, Hao, Yao, Yachi, Yang, Ruixuan, Yan, Zhaonan, Cao, Chen, Deng, Yanwen, Wu, Shengjiang, Liu, Shuhai, Xu, Qi, Qin, Yong
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2023
Subjects
abnormal response
Electrodes
Ethanol
Gases
Humidity
Hydrogen
hydrogen sensor
Nanowires
Nitrogen dioxide
Photovoltaic cells
Polymer films
Polymers
Scanning electron microscopy
Semiconductors
Sensors
Zinc oxide
ZnO nanofiber film
Online AccessGet full text

Cover

More Information
Summary:ZnO is a commonly used material for hydrogen gas sensors. In this study, a ZnO nanofiber film with a diameter of approximately 60 nm was synthesized by the electrospinning method. Compared to previously reported ZnO hydrogen gas sensors, an abnormal phenomenon was observed here, where the resistance of the ZnO nanofiber film increased upon exposure to hydrogen gas in the temperature range from 210 °C to 330 °C. The physical mechanism of this phenomenon was explored through microstructure analysis and DFT simulation calculations that showed a total charge transfer of 0.65 e for the hydrogen molecule. This study can push forward the understanding of ZnO hydrogen sensing.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16155847