Method for making fibrous nanoparticle-containing filter

A method of making a fibrous nanoparticle-containing filter, comprising:

• mixing a colloidal suspension comprising silver nanoparticles, polyvinylpyrrolidone, and dimethylformamide with a ketone-based solvent to form a precursor suspension;
• mixing polyvinylidene fluoride with the precursor suspension to form a first suspension;
• separately mixing polymethylmethacrylate with the precursor suspension to form a second suspension;
• mixing the first suspension with the second suspension to form an electrospin suspension;
• and
• electrospinning the electrospin suspension through a syringe needle at an applied voltage of from 12 to 30 KV to form the fibrous nanoparticle-containing filter,
• wherein the fibrous nanoparticle-containing filter comprises polymer fibers comprising polymethylmethacrylate, polyvinylidene fluoride, and polyvinylpyrrolidone, and silver nanoparticles deposited on the polymer fibers.