Journal
NEW JOURNAL OF CHEMISTRY
Volume 47, Issue 32, Pages 15283-15290Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d3nj01694c
Keywords
-
Categories
Ask authors/readers for more resources
An ethanol sensor with an obvious response and fast detection speed has been developed by constructing Ni-doped SnO2 nanosheets. The sensor showed a high response and short response/recovery time for ethanol vapor, which is attributed to the unique structure and chemical properties of the doped SnO2. This work presents an efficient strategy for exploiting high-performance gas sensors through morphology design and doping engineering.
Detecting ethanol is desirable in alcohol testing for safe driving. Therefore, developing an ethanol sensor with an obvious response and fast detection speed is urgent. In this work, a series of Ni-doped SnO2 nanosheets with flower-like hierarchical morphologies have been constructed and utilized for detecting ethanol vapor. The results indicate that the sensor response (R-a/R-g) of 3 mol% Ni-doped SnO2 is as high as 43.22 towards 100 ppm ethanol at 275 & DEG;C, about 6 times higher than that of pure SnO2. In addition, a short response/recovery time (11 s/14 s for 100 ppm ethanol), and excellent selectivity are also determined. This improved ethanol-sensing response is ascribed to two aspects: (1) a unique open structure assembled by ultrathin nanosheets (20-25 nm), favorable for gas-diffusion and gas-solid interactions and (2) a higher number of oxygen vacancies and chemisorbed oxygen in SnO2 after Ni-doping, contributing to the gas-sensing response. This work presents an efficient strategy combining morphology design and doped engineering for exploiting high-performance gas sensors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available