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Sensors 2018, 18(7), 2211; https://doi.org/10.3390/s18072211

Highly Sensitive Acetone Gas Sensor Based on g-C3N4 Decorated MgFe2O4 Porous Microspheres Composites

1
The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan Polytechnic University, Jiaozuo 454000, China
2
School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
3
State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, Jiaozuo 454000, China
*
Authors to whom correspondence should be addressed.
Received: 3 June 2018 / Revised: 2 July 2018 / Accepted: 6 July 2018 / Published: 10 July 2018
(This article belongs to the Special Issue Nanomaterials based Gas Sensors)
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Abstract

The g-C3N4 decorated magnesium ferrite (MgFe2O4) porous microspheres composites were successfully obtained via a one-step solvothermal method. The structure and morphology of the as-prepared MgFe2O4/g-C3N4 composites were characterized by the techniques of X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), thermal gravity and differential scanning calorimeter (TG–DSC) and N2-sorption. The gas sensing properties of the samples were measured and compared with a pure MgFe2O4-based sensor. The maximum response of the sensor based on MgFe2O4/g-C3N4 composites with 10 wt % g-C3N4 content to acetone is improved by about 145 times, while the optimum temperature was lowered by 60 °C. Moreover, the sensing mechanism and the reason for improving gas sensing performance were also discussed. View Full-Text
Keywords: g-C3N4 nanosheet; MgFe2O4 porous microspheres; composites; acetone; gas sensing g-C3N4 nanosheet; MgFe2O4 porous microspheres; composites; acetone; gas sensing
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Zhang, R.; Wang, Y.; Zhang, Z.; Cao, J. Highly Sensitive Acetone Gas Sensor Based on g-C3N4 Decorated MgFe2O4 Porous Microspheres Composites. Sensors 2018, 18, 2211.

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