Silver nanoparticle decorated cellulose nanofibrous membrane with good antibacterial ability and high water permeability AITranslate

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DOI：https://doi.org/10.1016/j.apmt.2017.06.005

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Membranes with high separation efficiency and antibacterial functions are promising candidates for drinking water intake during emergency events. Herein, we report a simple filtration process to prepare silver nanoparticle decorated cellulose nanofibrous (CNFs) membrane. These CNFs were prepared via 2,2,6,6-tetramethylpiperidine-1-oxyl oxidation process. Ag/CNFs composite nanofibers were fabricated by an in situ reduction method. After filtering Ag/CNFs composite dispersion on a macroporous support, a 710-nm thick Ag/CNFs membrane with Ag loading amount of 3.6 wt% was formed, which presents 86% rejection for 5-nm nanoparticles from water with flux of about 1000 L m−2 h−1 bar−1. In addition, this membrane shows excellent antibacterial ability. This membrane holds potential for field water treatment during emergency events. Graphical abstract Ag nanoparticle/cellulose nanofibrous membrane with thickness of 710 nm and 3.6 wt% Ag nanoparticles was prepared, which shows efficient rejection of 5 nm nanoparticles from water with high water flux and excellent antibacterial ability. This is a promising candidate for field water purification during emergency events.