采用溶胶凝胶法在导电玻璃上制备K2Ti6O13薄膜,考察焙烧温度对薄膜结构和光催化、光电化学行为的影响.采用XRD和AFM测定晶体和表面结构;以自组装在薄膜表面的十八烷基三氯硅烷(OTS)为光催化降解对象,评价K2Ti6O13薄膜光催化氧化性能;通过计时电位,循环伏安和光电流表征薄膜中光生载流子行为.结果表明,合适的结晶度和晶粒尺寸的匹配使500℃焙烧的K2Ti6O13薄膜具有较高的载流子激发、分离和迁移能力,体现出最高的光催化氧化能力和最大的光电流,光催化性能优于TiO2薄膜.由光电测试计算得其在254 nm光照下光电量子效率约为6.9%.
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