银纳米粒子
纳米复合材料
壳聚糖
材料科学
核化学
化学工程
透射电子显微镜
扫描电子显微镜
纳米颗粒
静电纺丝
纳米技术
制作
抗菌活性
膜
化学
聚合物
复合材料
病理
工程类
生物
医学
生物化学
替代医学
细菌
遗传学
作者
Yunnuen Zepeda Cortes,Loreto M. Valenzuela,Eduardo Peña,Beatriz Liliana España‐Sánchez
出处
期刊:IEEE Transactions on Nanobioscience
[Institute of Electrical and Electronics Engineers]
日期:2022-01-01
卷期号:21 (1): 89-96
被引量:5
标识
DOI:10.1109/tnb.2021.3092287
摘要
The process of disinfection of wastewater must use friendly materials with the environment that achieve the inhibition of bacterial growth, aiming to improve the quality of the water. In this study, electrospun nanocomposites CS (chitosan)/AgNPs (silver nanoparticles) was developed for wastewater disinfection through filtration. First, AgNPs were synthesized by a green synthesis method using aloe vera (Aloe Barbadensis Miller) extract as a reducing agent, and AgNO3 as metal precursor. AgNPs were characterized by UV-Vis spectroscopy with a SPR band at 420 nm. Transmission Electron Microscopy (TEM) demonstrates the formation of semispherical AgNPs with a diameter ca. 16 nm. The nanocomposites fibers CS/AgNPs were analyzed by scanning electron microscopy (SEM), with the presence of uniform fibers (diameter ca. 120 nm) and embedded AgNPs, determined by EDS and elemental mapping. Surface topography of CS/AgNPs fibers was evaluated by Atomic Force Microscopy (AFM), where the surface roughness of fibers is increased with the NPs content. Finally, the antibacterial activity (AA) of CS/AgNPs nanocomposites was evaluated against S. aureus and P. aeruginosa during 1 and 2 h of contact, obtaining an AA of 90 % in CS/AgNPs-2 mM after 2 h with P. aeruginosa. The fabrication of electrospun nanocomposites with silver nanoparticles represents a platform to the fabrication of multifunctional polymer membranes for wastewater disinfection.
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