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Ta‐Doped TiO 2 Nanotubes for Enhanced Solar‐Light Photoelectrochemical Water Splitting
Author(s) -
Altomare Marco,
Lee Kiyoung,
Killian Manuela S.,
Selli Elena,
Schmuki Patrik
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201203544
Subject(s) - anodizing , water splitting , doping , materials science , annealing (glass) , optoelectronics , sunlight , nanotube , electrochemistry , photoelectrochemistry , nanotechnology , chemical engineering , optics , photocatalysis , metallurgy , carbon nanotube , chemistry , electrode , catalysis , aluminium , biochemistry , engineering , physics
A little dopey : Ta‐doped titania (TiO 2 ) nanotube (NT) arrays can be grown by electrochemical anodization onto low‐Ta‐concentration (0.03–0.4 at % Ta) Ti–Ta alloys. Under optimized conditions (0.1 at % Ta, annealing at 650 °C and 7 μm thickness), Ta‐doped TiO 2 NT arrays show a significantly enhanced activity in photoelectrochemical water splitting under simulated sunlight conditions (see figure).