A novel high-flux, thin-film composite desalination membrane via co-deposition of multifunctional polyhedral oligomeric silsesquioxane and polyoxometalate

Abstract

This work describes the synthesis of a novel organic-inorganic nanocomposite membrane via an efficient one-pot approach of co-deposition of octa-aminopropyl polyhedral oligomeric silsesquioxane hydrochloride salt (OA-POSS) and polyoxometalate (POSS-Mo-36) onto a support membrane. The structure and morphology of the thin film nanocomposite (TFN) membranes were characterized by FT-IR spectroscopy, atomic force microscopy (AFM), energy-dispersive X-ray analysis (EDX), and scanning electron microscopy (SEM). In addition, the effect of POSS-Mo-36 on the performance of the thin film nanocomposite (TFN) membranes was investigated in a forward osmosis (FO) process. Experimental results demonstrate the enhanced desalination performance of the synthesized as compared to thin-film composite (TFC) polyamide membranes. (C) 2019 Elsevier Ltd. All rights reserved.