Hua Guang Xie's research while affiliated with Southwest Jiaotong University and other places
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Publications (4)
Though conventional metal oxide-based NH3 gas sensors possess the advantage of simplicity and high sensitivity, their relatively high operating temperature still limits their widespread applications. Therefore, it is essential to develop a reliable NH3 sensor that operated at room temperature. In this context, we employ the ultrasonic method to coa...
The adverse effects of NO2 on the environment and human health promote the development of high-performance gas sensors to address the need for monitoring. Two-dimensional (2D) metal chalcogenides have been considered an emerging group of NO2-sensitive materials, while incomplete recovery and low long-term stability are the two major hurdles for the...
One-dimensional (1D)/two-dimensional (2D) heterostructures offer attractive opportunities for developing high-performance gas sensors because of the unique built-in electric field at the hetero-interface, efficient charge separation and transportation, as well as...
High-performance gas sensors have been developed to meet the demand for the trace detection of NO2 given the adverse effects of NO2 posed to the environment and human health. Two-dimensional...
Citations
... Metal oxide semiconductors (MOS), the traditional materials for NO 2 gas sensors (e.g., WO 3 , 4 In 2 O 3 , 5 MoO 3 , 6 TiO 2 , 7 SnO 2 , 8 and SnO 9 ), have been utilized intensively due to their earth abundancy, high sensitivity, and cost-effectiveness. However, the inherent constraints of MOS, such as low surface activity and carrier mobility, contribute to the drawback of requiring elevated operating temperatures (200−500°C). ...
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... The electronic band structures of metal oxychalcogenides can be tailored by manipulating the oxygen-to-chalcogenide ratio, enabling the complete recovery under visible light excitation. 42,43 More importantly, the presence of S 2− ions on the surface stabilizes these compounds through hybridization of S-3p and O-2p orbitals, thereby enhancing their long-term stability. 44 To achieve conversion of metal chalcogenides to metal oxychalcogenides, energyintensive methods (such as probe sonication 38,39 and calcination 40 ) must be employed, where some of the sulfide atoms within the metal-sulfide framework are substituted with oxygen atoms. ...
... D scale (v d , ℑ d ) represents the multiplication operation between scalar ϕ d and feature maps in the channel dimension. The 1D-SE module performs channel recalibration on one-dimensional convolution, which has the characteristic of lightweight and requires less model complexity and computational complexity [19]. Finally, in the group normalization module of Unet-SE-BiSRU, this study chose Group Normalization (GN) as the improvement scheme for Batch Normalization (BN). ...
... It shows the signals related to C (ambient carbon), Mo, S, Sn, and O, which demonstrates a high purity of the synthesized SM-20 composite. Figure S3b displays the Mo 3d core-level region of the SM-20 composite, with two main peaks related to Mo 3d 3/2 and Mo 3d 5/2 at 233.1 and 229.9 eV, respectively, which can be attributed to Mo 6+ ions in MoS 2 [51]. Additionally, a peak related to S 2s is observed near the Mo 3d peaks. ...
