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Selective removal of the outer shells of anodic TiO2 nanotubes
Hui Li1, Jian-Wen Cheng, Shiwei Shu
1Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong.
Small (Weinheim an Der Bergstrasse, Germany)
|October 11, 2012
Abstract:
A facile electrochemical method to selectively remove the outer walls of anodic TiO(2) 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 TiO(2) nanotubes thus obtained show significantly improved photocatalytic efficiency compared with their non-etched counterparts.
