【摘要】 以溶胶-凝胶法制得AgNO3掺杂的TiO2溶胶,选用铝合金为载体,采用提拉法制得Ag-Ti-O复合膜.以亚甲基蓝为目标降解物,评价了膜片的可见光光催化性能.用XRD、FT-IR、SEM等方法对膜片的理化性能进行表征.结果表明:Ag-Ti-O复合膜对亚甲基蓝的可见光光催化降解表现出优异的活性,在AgNO3的添加量为8×10-2mol/L和拉膜次数为3次的条件下,对亚甲基蓝的脱色率可达98%;膜片重复使用8次,活性持续保持良好.更多还原

【Abstract】 The Ag-Ti-O thin film loaded on aluminium alloy was prepared via dip-coating method,using TiO₂ sol prepared by sol-gel method doped with AgNO₃.The photodegradation activity of methylene blue（MB） solution was investigated under visible light irradiation using the doped film as catalyst.Its structure and physicochemical properties were characterized by means of XRD,FT-IR and SEM.The results indicated that the film had good photocatalytic activity to the photodegradation of MB.When adding 8×10^-2mol AgNO₃ into 1L TiO₂ sol and coating three times,the MB decolor rate goes up to 98 %.After recycling 8 times,the yield still could keep up a good level.更多还原