Scholarlink

<p>Room-temperature detection of volatile organic compounds (VOCs) is a persistent challenge for low-power sensing applications. This study presents a scalable method for fabricating gas sensors based on vertically aligned carbon nanofibers (VACNFs) decorated with aerosol-printed gold nanoparticles (Au NPs). The Au-functionalized CNFs show ~ 140% improvement in response at 10&#xa0;ppm ethanol gas, reduced ~ 5-s response time, and enhanced stability with over 95% signal retention. These improvements are attributed to increased surface area, enhanced graphitic disorder, and the catalytic activity of Au NPs. Structural and morphological characterization using TEM, EDX, SEM, and Raman spectroscopy confirms the successful decoration of CNFs with Au. The effects of operating temperature and humidity on sensor performance are also evaluated.</p> Graphical Abstract <p></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

Gold-decorated vertically aligned carbon nanofibers for high-performance room-temperature ethanol sensing

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月24日

查看全文
  • Mostafa Shooshtari

摘要

Room-temperature detection of volatile organic compounds (VOCs) is a persistent challenge for low-power sensing applications. This study presents a scalable method for fabricating gas sensors based on vertically aligned carbon nanofibers (VACNFs) decorated with aerosol-printed gold nanoparticles (Au NPs). The Au-functionalized CNFs show ~ 140% improvement in response at 10 ppm ethanol gas, reduced ~ 5-s response time, and enhanced stability with over 95% signal retention. These improvements are attributed to increased surface area, enhanced graphitic disorder, and the catalytic activity of Au NPs. Structural and morphological characterization using TEM, EDX, SEM, and Raman spectroscopy confirms the successful decoration of CNFs with Au. The effects of operating temperature and humidity on sensor performance are also evaluated.

Graphical Abstract