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首页> 外文期刊>RSC Advances >One-step synthesis of flower-shaped WO3 nanostructures for a high-sensitivity room-temperature NOx gas sensor
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One-step synthesis of flower-shaped WO3 nanostructures for a high-sensitivity room-temperature NOx gas sensor

机译：高灵敏度室温NOx气体传感器的花形WO3纳米结构的一步合成

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In this work, we report a one-step synthesis of spherical flower-shaped tungsten oxide (WO _(3) ) nanostructures by using polyethylene glycol (PEG) as a surfactant. The PEG played a crucial role in controlling the final morphology of the WO _(3) product. The structure and morphology of the product were characterized by carrying out XRD and SEM experiments. These characterizations indicated these three-dimensional flower-shaped nanostructures to be well crystallized, to have a uniform morphology with an average diameter of 3 μm, and to consist of many two-dimensional nanosheets. The flower-shaped WO _(3) particles exhibited excellent room-temperature NO _( x ) gas-sensing performance, including a sensitivity as high as 80%, a short response time of 4.5 s to 97 ppm NO _( x ) , and a low detection limit of 970 ppb. The excellent performance was due to the structure and morphology of the WO _(3) product.
机译：在这项工作中，通过使用聚乙二醇（PEG）作为表面活性剂，通过使用聚乙二醇（PEG）来报告一步合成球形花形氧化钨（WO _（3））纳米结构。 PEG在控制WO _（3）产品的最终形态方面发挥了至关重要的作用。通过进行XRD和SEM实验，表征了产物的结构和形态。这些表征表明，这些三维花形纳米结构良好结晶，具有平均直径为3μm的均匀形态，并且由许多二维纳米片组成。花形WO _（3）颗粒出现优异的室温NO _（X）气体传感性能，包括高达80％的敏感性，短响应时间为4.5秒至97ppm no _（x），和970 ppb的低检测限。优异的性能是由于WO _（3）产品的结构和形态。

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