Immoblization of Thiol-Functionalized Nanosilica on the Surface of Poly(ether sulfone) Membranes for the Removal of Heavy-Metal Ions from Industrial Wastewater Samples

作者: Ahmad Rezvani-Boroujeni , Mehran Javanbakht , Mohammad Karimi , Cyrous Shahrjerdi , Behrouz Akbari-adergani

DOI: 10.1021/IE504106Y

关键词:

摘要: In this study, surface-immobilized thiol-functionalized nanosilica poly(ether sulfone) (PES) membranes were prepared to improve the membrane selectivity and wettability during filtration of heavy-metal solutions. The PES by phase inversion method create more open interconnected nanoporous structures. Nanosilica particles functionalized with 3-mercaptopropyltrimethoxysilane (MPTMS) initiate free thiol (−SH) groups on surface used as dispersed in ethanol. To increase adsorption nanoparticles surface, was treated Ar/O2 plasma before being immersed dispersion phase. cross-sectional morphology composition characterized scanning electron microscopy (SEM) energy-dispersive X-ray spectroscopy (EDS), respectively. Contact angle (CA) measurements confirmed that treatment improves membranes. Functionalized ...

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