Reduced graphene oxide (rGO) decorated TiO2 microspheres for selective room-temperature gas sensors

Reduced graphene oxide (rGO) decorated TiO2 microspheres for selective room-temperature gas sensors

Reduced graphene oxide (rGO) decorated TiO2 microspheres are prepared by using the hydrothermal method. The as-synthesized sample shows that TiO2 particles are connected by the rGO nanosheets while some TiO2 particles are found to be partly covered by rGO sheets. The rGO-decorated TiO2 based chemore...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Vol. 230; pp. 330 - 336
Main Authors: Li, Xiaogan, Zhao, Yangyang, Wang, Xueyan, Wang, Jing, Gaskov, Alexander M., Akbar, S.A.
Format: Journal Article
Language:English
Published: Elsevier B.V 01-07-2016
Subjects:
Actuators
Ammonia
Decoration
Gas sensors
Graphene
Microspheres
Oxides
Reduced graphene oxide (rGO)
Sensors
TiO2
Titanium dioxide
Reduced graphene oxide (rGO)
Ammonia
Gas sensors
TiO2
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Summary:Reduced graphene oxide (rGO) decorated TiO2 microspheres are prepared by using the hydrothermal method. The as-synthesized sample shows that TiO2 particles are connected by the rGO nanosheets while some TiO2 particles are found to be partly covered by rGO sheets. The rGO-decorated TiO2 based chemoresistive-type sensor shows good sensitivity and excellent selectivity to different concentrations of ammonia from 5ppm to 50ppm at room temperature. However, the response and recovery speeds of the sensor to ammonia are sluggish and need further optimization.
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content type line 23
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2016.02.069