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首页> 外文期刊>Journal of materials science >NH_3 gas sensing performance of ternary TiO_2/SnO_2/WO_3 hybrid nanostructures prepared by ultrasonic-assisted sol-gel method
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NH_3 gas sensing performance of ternary TiO_2/SnO_2/WO_3 hybrid nanostructures prepared by ultrasonic-assisted sol-gel method

机译：超声辅助溶胶-凝胶法制备三元TiO_2 / SnO_2 / WO_3杂化纳米结构的NH_3气敏性能

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摘要

Ternary TiO~(2)/SnO~(2)/WO~(3)hybrid nanostructures were prepared by using ultra-sonic assisted sol–gel wet impregnation method, and investigated for NH~(3)gas sensing applications. The physicochemical properties of the prepared samples were investigated using X-ray diffraction spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, ultra-violet-visible spectroscopy, and X-ray photoelectron spectroscopy. The results showed threefold increase in NH~(3)gas sensing performance with high selectivity, high response–recovery time at operating temperature 200 °C for ternary TSW-1 NC as compared to its bare, binary and other ternary counterparts. Due to mesoporous morphology of ternary TSW-1 NC and better interconnectivity between metal oxide NPs; NH~(3)molecule adsorbed efficiently on the surface as well as in interior part of lattice matrix, which resulted into a good sensing response.
机译：超声辅助溶胶-凝胶湿法浸渍法制备了三元TiO〜（2）/ SnO〜（2）/ WO〜（3）杂化纳米结构，并进行了NH〜（3）气敏化研究。使用X射线衍射光谱，场发射扫描电子显微镜，透射电子显微镜，紫外线-可见光谱和X射线光电子光谱研究制备的样品的理化性质。结果表明，与三元TSW-1 NC裸露，二元和其他三元对应物相比，三元TSW-1 NC在200°C的工作温度下具有较高的选择性，高响应-恢复时间，从而使NH〜（3）气体传感性能提高了三倍。由于三元TSW-1 NC的介孔形态和金属氧化物NP之间更好的互连性； NH〜（3）分子有效地吸附在晶格基质的表面和内部，产生了良好的传感响应。

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