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Proceedings 2017, 1(4), 411; doi:10.3390/proceedings1040411

Room Temperature NO2 Responses of Visible-Light Activated Nanosheet rGO@ZnO1−x Sensors

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, Mons 7000, Belgium
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 23 August 2017
Download PDF [2792 KB, uploaded 6 September 2017]

Abstract

In this study, we use a facile hydrothermal method to synthesize rGO@ZnO1−x composites. The in-situ synthesized ZnO nanosheets are well attached on the rGO sheets, which prevent the aggregation and restacking of ZnO nanosheets, greatly increasing the specific surface area of the synthesized materials. In addition, on account of the reducing synthesis condition, large numbers of oxygen vacancies are implanted into ZnO. With the incorporation of rGO, the visible light absorption range of the composites is greatly enhanced. The synthesized rGO@ZnO1−x composites exhibit excellent performance to ppb-level NO2 under white light illumination at room temperature, which effectively overcomes the disadvantages of typical metal oxide gas sensors.
Keywords: ZnO; rGO; composite; room temperature; light illumination ZnO; rGO; composite; 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.; Zhang, C.; Olivier, M.-G.; Debliquy, M. Room Temperature NO2 Responses of Visible-Light Activated Nanosheet rGO@ZnO1−x Sensors. Proceedings 2017, 1, 411.

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