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Zhang, Xia; Tan, Qiuhong; Wang, Qianjin; Yang, Peizhi; Liu, Yingkai
Nanomaterials, 11/2022, Letnik: 12, Številka: 23Journal Article
With the continuous improvement in material life, people are paying more and more attention to air quality; therefore, it is critical to design efficient and stable gas sensor devices. In this work, a flowery WSe2 nanostructure and its nanocomposite (Au@WSe2) decorated with Au nanoparticles were fabricated by the hydrothermal method. The performance of a resistive sensor with flowery WSe2 and Au@WSe2 sensors was evaluated by detecting volatile organic compounds such as ethanol, isoamylol, n-butyl alcohol, isopropanol, isobutanol and n-propanol. The results show that Au-nanoparticle-decorated flowery WSe2 can decrease the optimal working temperature from 215 °C to 205 °C and significantly enhance the response of flowery WSe2. The response values to isoamylol are the highest (as high as 44.5) at a low gas concentration (100 ppm), while the response values to ethanol are the highest (as high as 178.5) at a high gas concentration (1000 ppm) among the six different alcohols. Moreover, the response is steady and repeatable. The results demonstrate that the Au@WSe2 substrate has good responsiveness and selectivity, which makes it a promising candidate for gas detection.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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