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Ultra‐High‐Aspect‐Ratio Titania Nanotubes
Author(s) -
Richter C.,
Wu Z.,
Panaitescu E.,
Willey R. J.,
Me L.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200602389
Subject(s) - materials science , carbon nanotube , chlorine , electrolyte , aspect ratio (aeronautics) , nanotechnology , chemical engineering , anode , inorganic chemistry , electrode , composite material , metallurgy , chemistry , engineering
Ultrahigh‐aspect‐ratio titania nanotubes are fabricated electrochemically in organic‐acid‐containing chlorine salts. The tubes (see figure) are several tens of micrometers in length and only about 20 nm in diameter. The use of organic acids as anodic electrolyte combined with the vigorous chlorine chemistry result in the incorporation of a significant amount of carbon into the nanotubes. Such high‐aspect‐ratio nanotubes are shown to have enhanced visible‐light‐harvesting characteristics.