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<p>Advancement of various techniques for the alleviation of pollution is the necessity of human well being and protection of aquatic ecosystem. Main culprit of industrial pollution is the excess use of hazardous dyes. Membrane separation techniques for the removal of pollutants can effectively address this challenge. Membrane fouling is another important problem faced during nanofiltration. In this work, we proposed the fabrication of novel mixed matrix of silver nanoparticle infused carbon dot blended polysulfone (AgNP-CDs-PSF) membrane. The membranes were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infra red Spectroscopy (FTIR Spectroscopy), X-Ray diffraction (XRD) and UV-Visible spectroscopy. Water contact angle and porosity were also studied and the system was showing improved antibacterial property and dye rejection abilities. CDs prepared from natural and easily available sunflower seeds with rich hydrophilic groups can enhance the porosity and hydrophilicity of PSF membrane. The average pore size was reduced from 6 - 18&#xa0;nm to 4 –12&#xa0;nm by the incorporation of CDs to PSF membrane. 1 wt % of CDs-PSF showed an increased porosity of 62 % and for the same composition contact angle was 13° which implies rich hydrophilicity. These CDs were used for the AgNP formation and this mixed matrix of AgNP-CDs-PSF showed good antibacterial activity against various bacterial strains and also showed 81 % methylene Blue (MB) dye rejection. Over all, these findings proved superior antibacterial and nanofiltration capabilities of AgNP-CDs-PSF system.</p>

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Silver decorated carbon dot/polysulfone membranes for superior antibacterial and nanofiltration performance

  • 期刊论文

  • 发表日期：

    2026年5月2日

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  • Vrushali Patil,
  • Shivaji Jadhav,
  • Roshni V.,
  • Yogesh Chendake,
  • Nikita Vyawahare,
  • Asmita Satao,
  • Divya Ottoor,
  • Madhumita Tawre,
  • Karishma Pardesi

摘要

Advancement of various techniques for the alleviation of pollution is the necessity of human well being and protection of aquatic ecosystem. Main culprit of industrial pollution is the excess use of hazardous dyes. Membrane separation techniques for the removal of pollutants can effectively address this challenge. Membrane fouling is another important problem faced during nanofiltration. In this work, we proposed the fabrication of novel mixed matrix of silver nanoparticle infused carbon dot blended polysulfone (AgNP-CDs-PSF) membrane. The membranes were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infra red Spectroscopy (FTIR Spectroscopy), X-Ray diffraction (XRD) and UV-Visible spectroscopy. Water contact angle and porosity were also studied and the system was showing improved antibacterial property and dye rejection abilities. CDs prepared from natural and easily available sunflower seeds with rich hydrophilic groups can enhance the porosity and hydrophilicity of PSF membrane. The average pore size was reduced from 6 - 18 nm to 4 –12 nm by the incorporation of CDs to PSF membrane. 1 wt % of CDs-PSF showed an increased porosity of 62 % and for the same composition contact angle was 13° which implies rich hydrophilicity. These CDs were used for the AgNP formation and this mixed matrix of AgNP-CDs-PSF showed good antibacterial activity against various bacterial strains and also showed 81 % methylene Blue (MB) dye rejection. Over all, these findings proved superior antibacterial and nanofiltration capabilities of AgNP-CDs-PSF system.