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<p>A facile electrospinning method was utilized to fabricate nickel ferrite (NiFe<sub>2</sub>O<sub>4</sub>) nanotubes at different calcination temperatures (550&#xa0;℃, 600&#xa0;℃, 650&#xa0;℃, and 700&#xa0;℃). The structure of the nanotubes was characterized and analyzed using XRD, FE-SEM, and TEM. The results indicate that the surface of the NiFe<sub>2</sub>O<sub>4</sub> nanotubes gradually became rougher with increasing calcination temperature. When the calcination temperature reached 600&#xa0;℃, the NiFe<sub>2</sub>O<sub>4</sub> nanotubes exhibited the highest gas-sensing performance (R<sub>g</sub>/R<sub>a</sub> = 16.1) toward 100&#xa0;ppm triethylamine (TEA) at the operating temperature of 125&#xa0;°C. Compared to other tested gases, the NiFe<sub>2</sub>O<sub>4</sub> nanotubes demonstrated significant selectivity for triethylamine. Furthermore, the influence of calcination temperature on the sensing performance of the NiFe<sub>2</sub>O<sub>4</sub> nanotubes was investigated.</p>

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Effects of calcination temperature on triethylamine gas-sensing performance of NiFe2O4 nanotubes

  • 期刊论文

  • 发表日期：

    2026年4月16日

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  • Yanting Wang,
  • Runduo Teng,
  • Wenjun Tu,
  • Shuang Gao,
  • Qingsong Luo,
  • Lei Yue,
  • Changhao Feng

摘要

A facile electrospinning method was utilized to fabricate nickel ferrite (NiFe2O4) nanotubes at different calcination temperatures (550 ℃, 600 ℃, 650 ℃, and 700 ℃). The structure of the nanotubes was characterized and analyzed using XRD, FE-SEM, and TEM. The results indicate that the surface of the NiFe2O4 nanotubes gradually became rougher with increasing calcination temperature. When the calcination temperature reached 600 ℃, the NiFe2O4 nanotubes exhibited the highest gas-sensing performance (Rg/Ra = 16.1) toward 100 ppm triethylamine (TEA) at the operating temperature of 125 °C. Compared to other tested gases, the NiFe2O4 nanotubes demonstrated significant selectivity for triethylamine. Furthermore, the influence of calcination temperature on the sensing performance of the NiFe2O4 nanotubes was investigated.