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Preparation of High-Orderly TiO2 Nanotubes in Organic Solution and Characterization of C-doped TiO2
Xiao-yan Fan, Yun-huai Zhang*, Peng Xiao, Fu Hu, Huai Zhang
Author NameAffiliationE-mail
Xiao-yan Fan College of Chemistry and Chemical Engineering, Chongqing University, Chonging 400030, China  
Yun-huai Zhang* College of Chemistry and Chemical Engineering, Chongqing University, Chonging 400030, China xp2031@163.com 
Peng Xiao College of Mathematics and Physics, Chongqing University, Chongqing 400030, China  
Fu Hu College of Chemistry and Chemical Engineering, Chongqing University, Chonging 400030, China  
Huai Zhang College of Chemistry and Chemical Engineering, Chongqing University, Chonging 400030, China  
Abstract:
"High-orderly TiO2 nanotube arrays were fabricated by anodic oxidation of pure titanium substrate in organic electrolyte containing fluoride. Different morphological nanotubes of titania were obtained through controlling the different anodization voltages and durations. The length of the longest nanotubes was approximately 60 1m and the length-to-width aspect ratio was about 600. The nanotube layers were then annealed at different temperatures (450, 550, and 650 oC) in air for 2 h. The samples were characterized by scanning electron microscopy, X-ray diffraction (XRD), energy dispersive X-Ray (EDS) and UV-Vis spectrometer. The XRD results demonstrated that the as-anodized samples were amorphous and the structure changed to antanse and rutile when the samples were annealed at higher temperature. The EDS microanalysis indicated the presence of carbon in the TiO2 nanotubes. The result of degradation of methylene blue showed clearly that the photocatalytic activity of C-doped TiO2 nanotubes increased by 10%."
Key words:  Titanium dioxide nanotubes, Anodization, Carbon doping, Photocatalysis
FundProject:
高度有序的TiO2纳米管在有机电解液中的制备及碳掺杂TiO2纳米管的性能
樊小燕,张云怀*,肖鹏,胡夫,张怀
摘要:
"采用电化学阳极氧化法,在含有氟离子的有机电解液中,使纯钛表面形成一层高度有序的TiO2纳米管阵列.通过控制不同的阳极氧化电压和时间,可以得到形貌不同的TiO2纳米管.最长的TiO2纳米管接近60 1m,长径比约为600.TiO2纳米管在不同的温度(450、550和650 ℃)下焙烧2 h,采用SEM、XRD、EDS和UV-Vis分光光度仪对样品进行表征.X射线衍射仪测试结果表明制备的TiO2纳米管是无定型的,当在较高的温度下焙烧时,其结构由无定型转变为锐钛型和金红石型.EDS微量分析表明TiO2纳米管中
关键词:  TiO2纳米管,阳极氧化,碳掺杂,光催化
DOI:10.1088/1674-0068/20/06/753-758
分类号: