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<p>Gemini surfactants were employed to stabilize single-walled carbon nanotubes (SWNTs) in aqueous solutions. High-quality transparent conductive films (TCFs) composed of SWNTs were fabricated via the rod-coating method, and key processing parameters such as Gemini surfactant type, SWNT concentration, and ethanol post-treatment were systematically investigated. The samples were characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), ultraviolet–visible (UV–Vis) spectroscopy, and X-ray photoelectron spectroscopy (XPS). It was found that the Gemini surfactant 12–2-12 exhibited excellent dispersion performance in SWNT systems. Based on the SWNT dispersions stabilized by 12–2-12, TCFs with low sheet resistance and high optical transmittance were successfully fabricated. Notably, the dispersant on the films could be effectively removed via ethanol treatment within 30&#xa0;min. The sheet resistance decreased significantly by over 99%, while the transmittance at 550&#xa0;nm remained unaffected. Importantly, no environmentally polluting acidic wastewater was generated during the fabrication process, rendering this an eco-friendly method for TCF preparation.</p>

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The green preparation of transparent conductive films of single-wall carbon nanotube supported by gemini surfactants

  • 期刊论文

  • 发表日期：

    2026年1月20日

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  • Wenzhong Tian,
  • Yong Tang,
  • Lin Qiao,
  • Ming Huang,
  • Baixue Cai,
  • Zhanfeng He,
  • Shuai He

摘要

Gemini surfactants were employed to stabilize single-walled carbon nanotubes (SWNTs) in aqueous solutions. High-quality transparent conductive films (TCFs) composed of SWNTs were fabricated via the rod-coating method, and key processing parameters such as Gemini surfactant type, SWNT concentration, and ethanol post-treatment were systematically investigated. The samples were characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), ultraviolet–visible (UV–Vis) spectroscopy, and X-ray photoelectron spectroscopy (XPS). It was found that the Gemini surfactant 12–2-12 exhibited excellent dispersion performance in SWNT systems. Based on the SWNT dispersions stabilized by 12–2-12, TCFs with low sheet resistance and high optical transmittance were successfully fabricated. Notably, the dispersant on the films could be effectively removed via ethanol treatment within 30 min. The sheet resistance decreased significantly by over 99%, while the transmittance at 550 nm remained unaffected. Importantly, no environmentally polluting acidic wastewater was generated during the fabrication process, rendering this an eco-friendly method for TCF preparation.