Open AccessEffect of Tantalum Doping on TiO<sub>2</sub> Nanotube Arrays for Water-Splitting
Author(s) -
Alfonso Pozio
Publication year - 2015
Publication title -
modern research in catalysis
Language(s) - English
Resource type - Journals
eISSN - 2168-4499
pISSN - 2168-4480
DOI - 10.4236/mrc.2015.41001
Subject(s) - tantalum , anodizing , materials science , ethylene glycol , doping , nanotube , band gap , titanium , nanotechnology , chemical engineering , optoelectronics , inorganic chemistry , chemistry , metallurgy , carbon nanotube , aluminium , engineering
This work is intended to define a new possible methodology for TiO2 doping through the use of electrochemical deposition of tantalum directly on the titanium nanotubes obtained by a previous galvanostatic anodization treatment in an ethylene glycol solution. This method does not seem to cause any influence on the nanotube structure, showing final products with news and interesting features with respect to the unmodified sample. Together with a decrease in the band gap and flat band potential of the TiO2 nanotubes, the tantalum doped specimen reports an increase of the photo conversion efficiency under UV light