Herein,
we demonstrate a novel approach for development of TiO2 grafted 2D-TiC nanosheets (TiO2@2D-TiC) based
room temperature operable, flexible ethanol gas sensor. The homogeneous
distribution, unique composition, and crystalline microstructure of
TiO2 nanoparticles grafted 2D-TiC nanosheets have been
found to enhance the surface reactivity and efficiency of its transducer–receptor
functions. The electron–hole recombination at the TiO2/2D-TiC interfaces offered superior sensor performance with fast
response and recovery times. Moreover, TiO2@2D-TiC nanosheets
based flexible sensor exhibited high selectivity toward trace-level
ethanol gas (10 ppb–60 ppm) with extremely low noise-to-signal
ratio and excellent stability. The results suggest that the development
of low-cost flexible sensors based on TiO2@2D-TiC nanosheets
could be applied for potential applications, such as printed/wearable
electronics, biomedical sector and environmental monitoring.
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