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SnSO4 modified ZnO nanostructure for highly sensitive and selective formaldehyde detection
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DOI：10.1016/j.snb.2017.05.023.png)
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Abstract
En 中文
SnSO4 modified ZnO nanoparticles have been successfully synthesized for highly sensitive and selective formaldehyde detection after sintering at 450 degrees C in air. The ZnO/SnO2 heterojunctions and the surface sulfate play a significantly important role for the excellent formaldehyde sensing performance. Remarkably, the ZnO-3%SnSO4 sensor is able to detect ultralow concentration of formaldehyde (0.06 ppm) with excellent selectivity from commonly occurred indoor VOCs. With engineering efforts, a highly compact prototype formaldehyde sensor is obtained, which is very convenient for portable formaldehyde specific detection. (C) 2017 Published by Elsevier B.V.
Keywords:
ZnO
SnSO4
Formaldehyde
Room temperature
Sensor
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