Scholarlink

<p>Metal oxide semiconductors such as WO<sub>3</sub> have attracted a greater attention as a sensing platform. However, their high temperature operation has impeded their applications at room-temperature. But, recent developments in composites formation and subsequent enhancement in their electronic properties have pushed their applications in room-temperature gas sensing devices. Here, we report the synthesis of WO<sub>3</sub> with low dimensional multiwalled carbon nanotubes (MWCNTs) and their successful use as a gas sensing platform for selective room-temperature detection of dimethylformamide (DMF). Structural analysis using various techniques has confirmed the formation of a composite. Individually WO<sub>3</sub> displayed inferior detection of DMF without any sign of recovery. On the other hand, after forming a composite WO<sub>3</sub>/MWCNTs, the device so obtained exhibited selective and improved room-temperature detection of DMF with relative response of 5.4%, response and recovery times of 125 and 315&#xa0;s, respectively. Present work emphasizes on the role of optimum weight ratio in determining the overall sensing performance of the composite based sensing devices. The advantages of repeatability, selectivity and excellent stability, provide a great possibility for the use of WO<sub>3</sub>/MWCNTs-based composites in sensing.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Room-temperature dimethylformamide (DMF) vapor sensing using WO3/MWCNTs composite

  • 期刊论文

  • 发表日期：

    2025年6月19日

查看全文
  • Lovepreet Singh,
  • Nitesh Dogra,
  • Imtej Singh Saggu,
  • Sunil Singh Kushvaha,
  • Mandeep Singh,
  • Sandeep Sharma

摘要

Metal oxide semiconductors such as WO3 have attracted a greater attention as a sensing platform. However, their high temperature operation has impeded their applications at room-temperature. But, recent developments in composites formation and subsequent enhancement in their electronic properties have pushed their applications in room-temperature gas sensing devices. Here, we report the synthesis of WO3 with low dimensional multiwalled carbon nanotubes (MWCNTs) and their successful use as a gas sensing platform for selective room-temperature detection of dimethylformamide (DMF). Structural analysis using various techniques has confirmed the formation of a composite. Individually WO3 displayed inferior detection of DMF without any sign of recovery. On the other hand, after forming a composite WO3/MWCNTs, the device so obtained exhibited selective and improved room-temperature detection of DMF with relative response of 5.4%, response and recovery times of 125 and 315 s, respectively. Present work emphasizes on the role of optimum weight ratio in determining the overall sensing performance of the composite based sensing devices. The advantages of repeatability, selectivity and excellent stability, provide a great possibility for the use of WO3/MWCNTs-based composites in sensing.