TITLE:
Pure SnO2 Gas Sensor with High Sensitivity and Selectivity towards C2H5OH
AUTHORS:
Abeer Alhadi, Shuyi Ma, Tingting Yang, Shitu Pei, Pengdou Yun, Khalid Ahmed Abbakar, Qianqian Zhang, Nina Ma, Manahil H. Balal, Hamouda Adam Hamouda, Khalid Mohammed Adam
KEYWORDS:
Hydrothermal Method, Nanoparticles, Ethanol, SnO2, Gas Sensor
JOURNAL NAME:
Advances in Nanoparticles,
Vol.10 No.2,
May
11,
2021
ABSTRACT: To observation, poisonous gases in the environment, Sensors with high
selectivity, high response and low operating temperature are required. In this
work, pure SnO2 nanoparticles was prepared
by using a simple and inexpensive technique (hydrothermal
method) without a template. Various confirmatory tests were performed to
characterize SnO2 nanoparticles such as energy dispersive
X-ray spectroscopy (EDX), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Transition Electron Microscopy (TEM), during the detection of the gas, we found that pure SnO2 nanoparticles has a high selectivity for ethanol to 100 ppm at a low temperature (180°C) and a high response (about 27 s) and
a low detection limit of 5 ppm, also it have response/recovery times about (4 s, 2 s)
respectively. The distinctive sensing properties of SnO2 sensor make
it a promising candidate for ethanol detection. Furthermore, the gas-sensing
mechanism have been examined.