CAJ | 학술논문

采用原位生成法,对α-Al2O3微滤膜进行SnO2改性,考察了SnCl4浓度和浸渍次数对膜水通量及膜孔结构的影响规律.结果表明:当SnCl4溶液的浓度为0.05 mol/L、浸渍次数为二次时,SnO2的改性作用最佳,改性后的α-Al2O3微滤膜纯净水通量达到6.52 m3/(m2·h).同时发现,经SnO2改性后的α-Al2O3微滤膜,其孔径分布窄,具有良好的孔结构.
채용원위생성법,대α-Al2O3미려막진행SnO2개성,고찰료SnCl4농도화침지차수대막수통량급막공결구적영향규률.결과표명:당SnCl4용액적농도위0.05 mol/L、침지차수위이차시,SnO2적개성작용최가,개성후적α-Al2O3미려막순정수통량체도6.52 m3/(m2·h).동시발현,경SnO2개성후적α-Al2O3미려막,기공경분포착,구유량호적공결구.
α-alumina microfiltration membranes were modified using SnO2 by means of in situ synthesis. The effects of the SnCl4 concentration and dipping times on the water flux and pore structure of the modified membranes were studied. The structure of SnO2 nanoparticles was observed with a transmission electron microscope and the pore size distribution of the membranes with and without SnO2 modification was examined with a mercury injection apparatus. The results show that the flux of the modified membranes reaches 6.52 m3/(m2·h) after the membranes are immersed twice in a solution of 0.05 mol/L SnCl4. Meanwhile, α-alumina microfiltration membranes modified twice by tin oxide nanoparticles have a narrow pore size distribution and an excellent pore structure. The mechanism of SnO2 modification is also dissussed.