Scholarlink

<p>Traditional metal oxide semiconductor-based gas sensors frequently encounter challenges such as high operating temperatures, insufficient selectivity, and limited sensitivity, which constrain their practical applications. To overcome these limitations, this study proposes the incorporation of Ag doping and morphology optimization to reduce the operating temperature and to improve triethylamine detection performance. A novel Ag-doped NiCo<sub>2</sub>O<sub>4</sub> nanocomposite with a sea urchin-like structure was successfully synthesized via a hydrothermal method. The optimized 5-Ag/NiCo<sub>2</sub>O<sub>4</sub> sensor exhibited a significantly reduced operating temperature of 160&#xa0;°C, which is 60&#xa0;°C lower than that of pure NiCo<sub>2</sub>O<sub>4</sub>, along with a 2.4-fold enhancement in sensitivity. It demonstrated an impressive response value of 3.6 towards triethylamine, accompanied by rapid response/recovery times of 10&#xa0;s/93&#xa0;s, excellent selectivity, and long-term stability. The sea urchin-like structure provides abundant active sites, optimizes gas diffusion and electron transport, and Ag doping introduces the interface barrier and increases the active site, which collaborates to improve gas sensitivity. These factors synergistically improve the gas-sensing performance. Research has demonstrated that Ag-doped NiCo<sub>2</sub>O<sub>4</sub> holds significant potential for application in efficient trimethylamine detection.</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

Ag-Doped Sea Urchin-Like NiCo2O4 for High-Performance Triethylamine Gas Sensing

  • 期刊论文

  • 发表日期：

    2025年5月14日

查看全文
  • Chun-sen He,
  • Jia-chen Ye,
  • Hao-hao Zhang,
  • Xiao-ran Gong,
  • Xue Li,
  • Xin-yu Wang

摘要

Traditional metal oxide semiconductor-based gas sensors frequently encounter challenges such as high operating temperatures, insufficient selectivity, and limited sensitivity, which constrain their practical applications. To overcome these limitations, this study proposes the incorporation of Ag doping and morphology optimization to reduce the operating temperature and to improve triethylamine detection performance. A novel Ag-doped NiCo2O4 nanocomposite with a sea urchin-like structure was successfully synthesized via a hydrothermal method. The optimized 5-Ag/NiCo2O4 sensor exhibited a significantly reduced operating temperature of 160 °C, which is 60 °C lower than that of pure NiCo2O4, along with a 2.4-fold enhancement in sensitivity. It demonstrated an impressive response value of 3.6 towards triethylamine, accompanied by rapid response/recovery times of 10 s/93 s, excellent selectivity, and long-term stability. The sea urchin-like structure provides abundant active sites, optimizes gas diffusion and electron transport, and Ag doping introduces the interface barrier and increases the active site, which collaborates to improve gas sensitivity. These factors synergistically improve the gas-sensing performance. Research has demonstrated that Ag-doped NiCo2O4 holds significant potential for application in efficient trimethylamine detection.