The fabrication of nanocomposite membranes involves several methods: - Solution Casting: A solution containing the polymer and nanoparticles is cast onto a surface and allowed to dry. - Electrospinning: A high voltage is used to draw a polymer solution containing nanoparticles into fine fibers. - Layer-by-Layer Assembly: Alternating layers of polymers and nanoparticles are deposited to build up the membrane.