Abstract
Due to the particular advantages of synergistic effects and single components, design and fabrication of two-dimensional (2D) hybrids with high activity has obtained the attention of gas sensing researches. Herein, ZnSnO3/Ti3C2Tx MXene nanocomposites have been fabricated through a facile electrostatic self-assembly method by using ZnSnO3 nanocubes and layered Ti3C2Tx MXene. Characterization results demonstrated that the ZnSnO3 nanocubes were well combined with layered Ti3C2Tx MXene. Then, at room temperature the sensors, based on ZnSnO3/Ti3C2Tx MXene nanocomposites, exhibit remarkable selectively to formaldehyde, high response (194.7% to 100 ppm and 62.4% to 5 ppm), the fast response/recovery times (6.2/5.1 s to 100 ppm). In addition, the sensors demonstrate outstanding linearity and excellent repeatability with the low detection limit (ppm-level) towards formaldehyde. It is a strategy with the potential in the application field of room temperature gas detection via compositing metal oxide semiconductor with layered Ti3C2Tx MXene.
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