Influence of graphene oxide's characteristics on the fabrication and performance of crosslinked nanofiltration membranes

Graphene oxide (GO) is emerging as an excellent next generation material for water purification membranes. Its ability to be fabricated cost-effectively in large quantities and featured characteristics, such hydrophilicity, makes it equitable graphene alternative respective nanometric applications, including nanofiltration. In this study, the influence of key properties GO sheets, lateral size, surface chemistry colloid stability, on successful fabrication subsequent performance crosslinked nanofiltration membranes analysed. suspensions with nanosheets different sizes distribution oxygenated functional groups were prepared by controlling sonication time (from 0 180 min) starting from commercial GO. The variation physicochemical characteristics resulting sheets was comprehensively studied means atomic force microscopy, UV–Vis absorption spectroscopy, zeta potential measurements X-Ray photoelectron spectroscopy. morphology subsequently hereafter examined via scanning electron while their investigated against methylene blue solution. GO's membrane apparent, average rejection values ranging 59.8% 98.4% at a changing size chemistry.