Preparation and properties of novel pH-stable TFC membrane based on organic–inorganic hybrid composite materials for nanofiltration》.pdfVIP

Journal of Membrane Science 476 (2015) 500 –507 Contents lists available at ScienceDirect Journal of Membrane Science journal homepage: /locate/memsci Preparation and properties of novel pH-stable TFC membrane based on organic–inorganic hybrid composite materials for nanofiltration Yang Zhang, Min Guo, Guoyuan Pan, Hao Yan, Jian Xu, Yuanteng Shi, Hongwei Shi, Yiqun Liu n SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, PR China a r t i c l e i n f o a b s t r a c t Article history: A series of thin-film composite nanofiltration membranes have been fabricated by coating the poly(vinyl Received 5 September 2014 alcohol) and 3-mercaptopropyltriethoxysilane aqueous solution prepared by a sol–gel process on porous Received in revised form polysulfone support, followed by thermal cross-linking treatment. In order to improve the hydrophilicity 5 December 2014 of the nanofiltration membranes, the –SH in the membranes are oxidized into –SO3H by immersing the Accepted 11 December 2014 Available online 23 December 2014 membranes in H2O2 aqueous solution. Notably, no organic solvent is used during the membrane preparation, showing enough green chemistry technology for environmental protection. The properties Keywords: of the composite nanofiltration membranes are characterized by ATR-FTIR, SEM, AFM and static contact Acid stability angle. The optimal composite nanofiltrat