| Related citation: | ZHAO Qing,SHI Wen-xin,YU Shui-li,LU Hui,LU Yan.Comparison of PVDF porous membranes modified by two different methods using composite nano-particles[J].Journal of Harbin Institute Of Technology(New Series),2010,17(6):751-755.DOI:10.11916/j.issn.1005-9113.2010.06.003. |
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| Author Name | Affiliation | | ZHAO Qing | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China | | SHI Wen-xin | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China | | YU Shui-li | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China
State Key Laboratory of Pollution Control and Resource Reuse,Tongji University,Shanghai 200092,China | | LU Hui | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China | | LU Yan | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China |
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| Abstract: |
| To improve the hydrophilicity and anti-fouling performance in water treatment,both entrapped method and deposited method were used to modify polyvinylidene fluoride(PVDF)porous membrane with composite Al2O3/TiO2 nano-particles.Neat PVDF membrane was prepared and its property was also compared with that of the modified membranes.Membrane permeation flux and anti-fouling performance were measured using a membrane cell.The contact angle between water and membrane surface was detected in order to denote the membrane hydrophilicity.Membrane morphology and surface structure were examined by atomic-force microscopy(AFM)and scanning electron microscopy(SEM).Experimental results showed that modified membranes had higher permeation fluxes than that of the neat PVDF membrane.The addition of nano-particles altered membrane surface morphology and increased surface roughness.Due to the hydrophilicity of nano-particles,however,the membrane anti-fouling performance was improved instead of worsened.The entrapped membrane exhibited better anti-fouling performance than the deposited membrane and the neat membrane. |
| Key words: PVDF membrane entrapped method deposited method composite nano-particles membrane fouling |
| DOI：10.11916/j.issn.1005-9113.2010.06.003 |
| Clc Number:TU991.2 |
| Fund: |
