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Proceedings 2017, 1(4), 412; doi:10.3390/proceedings1040412

Light-Assisted Room-Temperature NO2 Sensors Based on Black Sheet-Like NiO

1
College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China
2
College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
3
Service de Science des Matériaux, Faculté Polytechnique, Université de Mons, 7000 Mons, Belgium
4
Material Science Department, Materia Nova ASBL, 7000 Mons, Belgium
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 22 August 2017
Download PDF [2777 KB, uploaded 22 August 2017]

Abstract

In this study, we use two-dimensional black flake nickel oxide as the sensitive material which was synthesized by a facile hydrothermal route. The as-synthesized sheet-like NiO possessed a large specific surface area, as verified by BET characterization. The as-prepared NiO nanosheets had strong absorption in the range of 250–800 nm including UV and visible light. Upon exposure to ppb-level NO2, the presented sensors showed significant responses under light illumination at room temperature. In addition, the light wavelength also had a remarkable effect on the sensing performance in terms of sensitivity, response and recovery kinetics. Furthermore, the sensor showed a low humidity dependence.
Keywords: NiO; NO2; room temperature; light illumination NiO; NO2; room temperature; light illumination
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Geng, X.; Lahem, D.; Zhang, C.; Olivier, M.-G.; Debliquy, M. Light-Assisted Room-Temperature NO2 Sensors Based on Black Sheet-Like NiO. Proceedings 2017, 1, 412.

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