Ethanol sensors based on graphene/tin oxide

Author

Weiwei Zhang ; Dajun Wu ; Yiping Zhu ; Shaohui Xu ; Lianwei Wang

Author_Institution

Dept. of Electron. Eng., East China Normal Univ., Shanghai, China

fYear

2014

fDate

28-31 Oct. 2014

Firstpage

1

Lastpage

3

Abstract

Tin oxide powders were prepared by chemical deposition and reduced graphene oxide (rGO) was prepared by oxidation-reduction method. Their structures were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Different mass ratio of rGO were doped into tin oxide powders, and the mixed powders were then coated onto the ceramic tube as thick-film gas sensors. Sensing properties of different concentration of ethanol were tested by CGS-8 gas sensing analysis system. The sensing properties of rGO-doped sensors have improved a lot during relatively low temperature. In addition, the recovery performance has been shortened from more than 450 s to nearly 20 s at 110mA heating current.

Keywords

X-ray diffraction; gas sensors; graphene; liquid phase deposition; organic compounds; oxidation; reduction (chemical); scanning electron microscopy; thick film sensors; tin compounds; CGS-8 gas sensing analysis system; SEM measurements; SnO₂:CO; X-ray diffraction; XRD measurements; ceramic tube; chemical deposition; ethanol sensors; oxidation-reduction method; reduced graphene oxide; scanning electron microscopy; thick film gas sensor; Chemical sensors; Ethanol; Graphene; Heating; Powders; Sensor systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4799-3296-2

Type

conf

DOI

10.1109/ICSICT.2014.7021636

Filename

7021636