Fabrication of SPES/Nano-TiO2 Composite Ultrafiltration Membrane and Its Anti-fouling Mechanism

Abstract

Abstract: Membrane fouling is one of the major obstacles for reaching a high flux over a prolonged period of ultrafiltration(UF)process.In this study,a sulfonated-polyethersulfone(SPES)/nano-TiO₂ composite UF membrane with good anti-fouling performance was fabricated by phase inversion and self-assembly methods.The TiO₂ nanoparticle self-assembly on the SPES membrane surface was confirmed by X-ray photoelectron spectroscopy (XPS)and FT-IR spectrometer.The morphology and hydrophilicity were characterized by scanning electron microscopy(SEM),atomic force microscopy(AFM)and contact angle goniometer,respectively.The anti-fouling mechanism of composite UF membrane was discussed through the analysis of the micro-structure and component of UF membrane surface.The results showed that the TiO₂ content and the micro-structure of the composite UF membrane surface had great influence on the separation and anti-fouling performance.

Key words: anti-fouling, ultrafiltration membrane, sulfonated-polyethersulfone, TiO₂ nanoparticle, phase inversion, self-assembly

摘要： Membrane fouling is one of the major obstacles for reaching a high flux over a prolonged period of ultrafiltration(UF)process.In this study,a sulfonated-polyethersulfone(SPES)/nano-TiO₂ composite UF membrane with good anti-fouling performance was fabricated by phase inversion and self-assembly methods.The TiO₂ nanoparticle self-assembly on the SPES membrane surface was confirmed by X-ray photoelectron spectroscopy (XPS)and FT-IR spectrometer.The morphology and hydrophilicity were characterized by scanning electron microscopy(SEM),atomic force microscopy(AFM)and contact angle goniometer,respectively.The anti-fouling mechanism of composite UF membrane was discussed through the analysis of the micro-structure and component of UF membrane surface.The results showed that the TiO₂ content and the micro-structure of the composite UF membrane surface had great influence on the separation and anti-fouling performance.

关键词: anti-fouling, ultrafiltration membrane, sulfonated-polyethersulfone, TiO₂ nanoparticle, phase inversion, self-assembly

LUO Mingliang, WEN Qingzhi, LIU Jialin, LIU Hongjian, JIA Zilong. Fabrication of SPES/Nano-TiO₂ Composite Ultrafiltration Membrane and Its Anti-fouling Mechanism[J]. , 2011, 19(1): 45-51.

罗明良, 温庆志, 刘佳林, 刘洪见, 贾自龙. Fabrication of SPES/Nano-TiO₂ Composite Ultrafiltration Membrane and Its Anti-fouling Mechanism[J]. , 2011, 19(1): 45-51.

References

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Fabrication of SPES/Nano-TiO₂ Composite Ultrafiltration Membrane and Its Anti-fouling Mechanism

Fabrication of SPES/Nano-TiO₂ Composite Ultrafiltration Membrane and Its Anti-fouling Mechanism

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