Narváez-Muñoz Christian, Ponce Sebastián, Durán Carlos, Aguayo Cristina, Portero Cesar, Guamán Joseph, Debut Alexis, Granda Magaly, Alexis Frank, Zamora-Ledezma Ezequiel, Zamora-Ledezma Camilo
Departamento de Ciencias de la Energía y Mecánica, Universidad de las Fuerzas Armadas-ESPE, Sangolquí 171103, Ecuador.
Centre Internacional de Mètodes Numérics en Enginyeria (CIMNE), C/Gran Capitán s/n, Campus Nord, 08034 Barcelona, Spain.
Polymers (Basel). 2025 Jun 26;17(13):1762. doi: 10.3390/polym17131762.
This study presents a one-step electrospinning method to fabricate polyacrylonitrile (PAN) nanofibers embedded with green-synthesized silver nanoparticles (AgNPs) for efficient catalytic dye reduction and real-time monitoring. Utilizing avocado seed extract for AgNP synthesis, the resulting composite nanofibers exhibit uniform nanoparticle dispersion and enhanced surface area, significantly improving adsorption and catalytic properties. The membranes demonstrated outstanding catalytic activity, achieving over 95% degradation of methyl orange within 45 min when paired with sodium borohydride, and maintained structural integrity and performance over ten reuse cycles. The integration of a novel 3D-printed support enabled scalability, allowing a 60-fold increase in treatment volume without compromising efficiency. Additionally, the composite's electrical conductivity changes enabled the real-time monitoring of the dye reduction process, highlighting its dual functionality as both catalyst and sensor. These results encourage the potential of PAN/AgNPs supported on a 3D-printed structure nanofiber membranes for scalable, sustainable wastewater treatment and in situ reaction monitoring.
本研究提出了一种一步电纺丝方法，用于制备嵌入绿色合成银纳米颗粒（AgNPs）的聚丙烯腈（PAN）纳米纤维，以实现高效催化染料还原和实时监测。利用鳄梨籽提取物合成AgNP，所得复合纳米纤维表现出均匀的纳米颗粒分散性和增大的表面积，显著提高了吸附和催化性能。这些膜表现出出色的催化活性，与硼氢化钠配对时，在45分钟内可实现甲基橙降解率超过95%，并且在十次重复使用循环中保持结构完整性和性能。新型3D打印载体的集成实现了可扩展性，使处理量增加了60倍而不影响效率。此外，复合材料的电导率变化能够实时监测染料还原过程，突出了其作为催化剂和传感器的双重功能。这些结果表明，3D打印结构纳米纤维膜负载的PAN/AgNPs在可扩展、可持续的废水处理和原位反应监测方面具有潜力。
