Highly efficient Ceramic-SWCNT based free standing films for gas sensing application

Mishra, Prabhash; Islam, S. S.

doi:10.1016/j.mssp.2015.05.047

Cited by 6 publications

(2 citation statements)

References 34 publications

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“…Mainly, sensors based on carbon nanomaterials require recovery. This recovery can be carried out using heating [ 87 , 153 , 162 ], an increase in gas flow [ 40 ], a strong electric field [ 206 ], or irradiation by infrared light [ 207 ]. In [ 207 ], a sensor based on graphene decorated with Au nanoparticles was illuminated with infrared radiation (≈2 µW/mm 2 ), which made it possible to recover more than 90% of the original baseline level.…”

Section: Recovery Of Sensorsmentioning

confidence: 99%

“…In [ 153 ], heating (100 °C, 3 min) was used for the 100% recovery of sensors based on nanofibrous carbon. In [ 162 ], the protocol of heat treatment for SWCNT/Al 2 O 3 ammonia gas sensors was 200 °C for 10 min in a nitrogen flow. Sharma et al [ 139 ] showed that 150 °C provides sufficient energy to carry out the recovery of ammonia from the surface of MWCNTs in MWCNTs/Al 2 O 3 composite-based sensors.…”

Section: Recovery Of Sensorsmentioning

confidence: 99%

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Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials

et al. 2021

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This review paper is devoted to an extended analysis of ammonia gas sensors based on carbon nanomaterials. It provides a detailed comparison of various types of active materials used for the detection of ammonia, e.g., carbon nanotubes, carbon nanofibers, graphene, graphene oxide, and related materials. Different parameters that can affect the performance of chemiresistive gas sensors are discussed. The paper also gives a comparison of the sensing characteristics (response, response time, recovery time, operating temperature) of gas sensors based on carbon nanomaterials. The results of our tests on ammonia gas sensors using various techniques are analyzed. The problems related to the recovery of sensors using various approaches are also considered. Finally, the impact of relative humidity on the sensing behavior of carbon nanomaterials of various different natures was estimated.

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