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氧供体醇对非水解溶胶-凝胶法制备TiO2薄膜结构及性能的影响

包镇红,江伟辉,余琴仙,苗立锋,谭训彦,虞澎澎,于云

Journal of Ceramics（2010）

Cited 1|Views18
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Abstract
以TiCl4为前驱体,聚乙二醇为添加剂,分别采用无水甲醇、无水乙醇和无水异丙醇为氧供体,采用非水解溶胶-凝胶法制备了TiO2薄膜.应用X射线衍射、场发射扫描电镜和光照甲基橙的降解实验研究了氧供体醇种类对TiO2溶胶的胶凝时间、TiO2薄膜显微结构和光催化活性的影响.结果表明:当乙醇为氧供体时,TiO2溶胶的胶凝时间最长,甲醇次之,异丙醇最短.相对于甲醇和异丙醇为氧供体,以无水乙醇为氧供体时,TiO2薄膜中所含无定形含量最少,具有光催化作用的锐钛矿含量最多,薄膜呈现均匀的多孔结构,光催化性能最佳.
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Key words
oxygen donor alcohol,photocatalysis,TiO2 films,non-hydrolytic sol-gel
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