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Niobium Doping Enhances Charge Transport in TiO 2 Nanorods
Author(s) -
Wang HsinYi,
Yang Hongbin,
Zhang Liping,
Chen Jiazang,
Liu Bin
Publication year - 2016
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201600035
Subject(s) - nanorod , materials science , photocurrent , doping , tin oxide , dopant , titanium dioxide , nanotechnology , tin dioxide , hydrothermal circulation , electrode , rutile , niobium oxide , chemical engineering , niobium , optoelectronics , chemistry , composite material , engineering , metallurgy
The charge‐transport behavior of nanostructured titanium dioxide (TiO 2 ) is of great interest because of the wide range of applications. In this work, we demonstrate a facile approach to improve electron transport in TiO 2 nanorods (NRs) by introducing niobium (Nb) dopant into the lattice of TiO 2 . The TiO 2 ‐NRs doped with Nb were grown directly on fluorine doped tin oxide (FTO) substrates by a facile hydrothermal method and used directly as the photoanodes for water oxidation. The TiO 2 nanorod electrode doped with 0.25 % of Nb showed 65 % improvement in photocurrent as compared with the pristine TiO 2 nanorod electrode. Furthermore, by simply changing the light illuminating direction, the improvement of charge transport induced by Nb doping could be easily identified.