A new microfiltration membrane with three-dimensional reticular architecture for Nano-pollutants removal from wastewater |
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Authors: | Wanyuan Gui Jingru Liu Xiping Song Hui Zhang Junpin Lin Benli Luan |
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Institution: | 1. National Center for Materials Service Safety, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China;2. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing, 100094, China;3. Department of Chemistry, Western University, London, Ontario, N6A 5B7, Canada |
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Abstract: | This research provides a new insight into designing next-generation filtration materials for Nano-pollutants removal from wastewater, and potentially for gas/solid or liquid/solid separation in corrosive environment. Considering the high corrosion and oxidation resistance, Ti–40Al–10Nb–10Cr porous alloy was prepared by powder metallurgy and used as a mechanical support with a pore size of around 10 ?μm. Subsequently, metallic Zn nanoparticles was coated on the Ti–40Al–10Nb–10Cr porous framework by means of chemical vapor deposition, obtaining a novel microfiltration membrane with three-dimensional reticular architecture. Furthermore, the influence of Zn coating on surface morphology, pore feature, and filtration capability of Ti–40Al–10Nb–10Cr porous alloy was investigated. It is of note that the as-prepared microfiltration membrane exhibits an excellent Nano-pollutants filtration efficiency of greater than 99.989% from wastewater. Most importantly, such a three-dimensional reticular architecture provides excellent structural stability, allowing the reutilization of the microfiltration membrane for at least 200 filtration cycles of wastewater treatment. |
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Keywords: | Porous materials Microfiltration membrane Separation and purification Intermetallic materials Water purification |
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