文献类型：期刊文献

英文题名：Surface Mineralization of the TiO2-SiO2/PES Composite Membrane with Outstanding Separation Property via Facile Vapor-Ventilated In Situ Chemical Deposition

作者：Gan, Ning[1,2];Lin, Yuqing[1];Zhang, Yiren[1];Gitis, Vitaly[3];Lin, Qian[2];Matsuyama, Hideto[4]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[2]Guizhou Univ, Sch Chem & Chem Engn, Guiyang 550025, Guizhou, Peoples R China;[3]Ben Gurion Univ Negev, Fac Engn Sci, Unit Environm Engn, IL-84105 Beer Sheva, Israel;[4]Kobe Univ, Res Ctr Membrane & Film Technol, Dept Chem Sci & Engn, Kobe 6578501, Japan

年份：2022

卷号：38

期号：42

起止页码：12951

外文期刊名：LANGMUIR

收录：;EI(收录号：20224313003910);WOS:【SCI-EXPANDED(收录号:WOS:000874026800001)】；

基金：? ACKNOWLEDGMENTS This work was supported by the Nature Science Foundation of China (Grant 22068009) and the Science and Technology Support Plan Projects of Guizhou Province (Grant (2018) 2192) .

语种：英文

外文关键词：Chemical modification - Membrane fouling - Molecules - Physicochemical properties - Silica - Silicon - Surface chemistry - Surface treatment - Titanium dioxide - Wastewater treatment - Water pollution

摘要：Conventional polymeric membranes are broadly employed in water treatment processes; however, most of them suffer from relatively low water permeance and severe membrane fouling phenomena owing to their relatively hydrophobic nature. In this work, a novel class of inorganic-organic composite membranes was developed through a newly developed vapor ventilated in situ chemical deposition method, where the Ti and Si precursors were first hydrolyzed and then conferred into metal oxides to form a continuous TiO2-SiO2 modification layer. Owing to the distinct physicochemical properties, the Ti and Si precursors were leveraged as quasi-molecular regulators to tune the membrane surface chemistry and pore aperture (within the nanoscale) to benefit highly efficient water purification by underpinning the rapid transport of water molecules and featuring an excellent fouling resistant and fouling-releasing property against typical pollutants. The as-developed TiO2-SiO2/PES composite membrane showed a high water permeance of 187.4 L center dot m-2 center dot h-1 center dot bar-1, together with a relatively small mean pore aperture of 4.2 nm, showing an outstanding permeating efficiency among state-of-the-art membranes with a similar separation accuracy. This study provides a paradigm shift in membrane materials that could open avenues for developing high-performance inorganic-organic composite membranes for complex wastewater treatment.