以SnCl4与氨水为主要原料,采用原位生成法,对α-Al2O3微滤膜进行SnO2改性,考察了反应物浓度和涂覆次数对改性作用及膜孔结构的影响.结果表明:当SnCl4溶液的浓度为0.05 mol/L、涂覆次数为2次时,SnO2的改性作用最佳,改性后的α-Al2O3微滤膜纯净水通量最高,增幅达到22.6%.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.
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