Hydrothermal Synthesis of SnO Nanoneedle-Anchored NiO Microsphere and its Gas Sensing Performances.

In this study, we reported a successful synthesis of a nanocomposite based on SnO nanoneedles anchored to NiO microsphere by a simple two-step hydrothermal route. The results show that the SnO/NiO nanocomposite-based sensor exhibits more prominent performances than the pristine NiO microsphere to NO such as larger responses and more outstanding repeatability. The improved properties are mainly attributed to the p-n heterojunctions formed at the SnO-NiO interface, leading to the change of potential barrier height and the enlargement of the depletion layer.

Electrospun ZnO-SnO Composite Nanofibers and Enhanced Sensing Properties to SF Decomposition Byproduct HS.

Hydrogen sulfide (HS) is an important decomposition component of sulfur hexafluoride (SF), which has been extensively used in gas-insulated switchgear (GIS) power equipment as insulating and arc-quenching medium. In this work, electrospun ZnO-SnO composite nanofibers as a promising sensing material for SF decomposition component HS were proposed and prepared. The crystal structure and morphology of the electrospun ZnO-SnO samples were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively.

Recent Advances of SnO-Based Sensors for Detecting Fault Characteristic Gases Extracted From Power Transformer Oil.

Tin oxide SnO-based gas sensors have been widely used for detecting typical fault characteristic gases extracted from power transformer oil, namely, H, CO, CO, CH, CH, CH, and CH, due to the remarkable advantages of high sensitivity, fast response, long-term stability, and so on. Herein, we present an overview of the recent significant improvement in fabrication and application of high performance SnO-based sensors for detecting these fault characteristic gases. Promising materials for the sensitive and selective detection of each kind of fault characteristic gas have been identified.

Synthesis and Characterization of Highly Sensitive Hydrogen (H₂) Sensing Device Based on Ag Doped SnO₂ Nanospheres.

In this paper, pure and Ag-doped SnO₂ nanospheres were synthesized by hydrothermal method and characterized via X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), and X-ray photoelectron spectra (XPS), respectively. The gas sensing performance of the pure, 1 at.%, 3 at.