唐名早,吴进明,孟亮

• 1:浙江大学材料科学与工程学系

摘要(Abstract)：

对经过不同预处理的钛片进行真空热氧化处理,在表面原位制得了TiO2纳米线。利用场发射扫描电子显微镜(FE-SEM)、高分辨透射电子显微镜(HR-TEM)和X射线衍射仪(XRD)对原位制备的TiO2纳米线的表面形貌及相结构进行表征,并通过降解水中染料罗丹明B的方式对经不同时间热氧化处理后酸洗钛片的光催化性能进行测试。薄膜结构表征结果表明,一定真空条件下钛片750℃热氧化5～10 h后可以获得大量直径40～50 nm,长度3.0～5.0μm的单晶金红石结构TiO2纳米线;使用H2 O2氧化钛片表面预先获得一层多孔非晶TiO2薄层显著影响纳米线的生长。光催化性能测试结果表明,真空热氧化处理1 h获得的扁平片状纳米结构金红石具有最高的光催化降解罗丹明B的能力;处理时间从5 h延长到10 h,得到的纳米线金红石薄膜的光催化性能提高。

关键词(KeyWords)： 二氧化钛;纳米线;真空;热氧化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50871103);; 浙江省自然科学基金(Y408001)

作者(Author): 唐名早,吴进明,孟亮

DOI: 10.13289/j.issn.1009-6264.2011.04.004

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