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Proceedings 2017, 1(4), 412;

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

College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China
College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
Service de Science des Matériaux, Faculté Polytechnique, Université de Mons, 7000 Mons, Belgium
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
(This article belongs to the Proceedings of Eurosensors 2017)
PDF [2777 KB, uploaded 22 August 2017]


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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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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