Selective Removal of the Outer Shells of Anodic TiO2 Nanotubes

被引:37
作者
Li, Hui [1 ,2 ,4 ,5 ]
Cheng, Jian-Wen [1 ,4 ]
Shu, Shiwei [1 ,4 ]
Zhang, Jie [1 ,4 ]
Zheng, Lingxia [1 ,4 ]
Tsang, Chun Kwan [1 ,4 ]
Cheng, Hua [1 ,4 ]
Liang, Fengxia [1 ,4 ]
Lee, Shuit-Tong [3 ]
Li, Yang Yang [1 ,4 ,5 ]
机构
[1] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China
[2] Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China
[3] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
[4] City Univ Hong Kong, Ctr Funct Photon, Hong Kong, Hong Kong, Peoples R China
[5] USTC CityU Joint Adv Res Ctr, Suzhou 215123, Jiangsu, Peoples R China
关键词
anodization; TiO2; nanotubes; electrochemical etching; photocatalytic efficiency; electric fields; OPTICAL-PROPERTIES; ARRAYS; MORPHOLOGY; WATER; FABRICATION; EFFICIENCY; INITIATION; MECHANISM; GROWTH; LAYERS;
D O I
10.1002/smll.201201874
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A facile electrochemical method to selectively remove the outer walls of anodic TiO2 nanotubes by leaving the as-anodized nanotubes in the same electrolyte and applying an electric field parallel to the anodic film for several minutes is reported. The better-separated single-walled TiO2 nanotubes thus obtained show significantly improved photocatalytic efficiency compared with their non-etched counterparts. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:37 / 44
页数:8
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