Niobium Doping Enhances Charge Transport in TiO2 Nanorods

Hsin-Yi Wang; Hongbin Yang; Liping Zhang; Jiazang Chen; Bin Liu

doi:10.1002/cnma.201600035

Niobium Doping Enhances Charge Transport in TiO₂ Nanorods

Hsin-Yi Wang
, Hongbin Yang
, Liping Zhang
, Jiazang Chen
, Bin Liu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

Abstract

The charge-transport behavior of nanostructured titanium dioxide (TiO2) is of great interest because of the wide range of applications. In this work, we demonstrate a facile approach to improve electron transport in TiO2 nanorods (NRs) by introducing niobium (Nb) dopant into the lattice of TiO2. The TiO2-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 TiO2 nanorod electrode doped with 0.25 % of Nb showed 65 % improvement in photocurrent as compared with the pristine TiO2 nanorod electrode. Furthermore, by simply changing the light illuminating direction, the improvement of charge transport induced by Nb doping could be easily identified. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Original language	English
Pages (from-to)	660-664
Journal	ChemNanoMat
Volume	2
Issue number	7
DOIs	https://doi.org/10.1002/cnma.201600035
Publication status	Published - 1 Jul 2016
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported by the Nanyang Technological University startup grant: M4080977.120, Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1: 2015-T1-002-108, and Public Sector Funding from Agency for Science, Technology and Research of Singapore (A*Star): M4070232.120.

Research Keywords

charge transport
electron transport
photocurrent
titanium dioxide
water oxidation

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10.1002/cnma.201600035

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Cite this

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title = "Niobium Doping Enhances Charge Transport in TiO2 Nanorods",

abstract = "The charge-transport behavior of nanostructured titanium dioxide (TiO2) is of great interest because of the wide range of applications. In this work, we demonstrate a facile approach to improve electron transport in TiO2 nanorods (NRs) by introducing niobium (Nb) dopant into the lattice of TiO2. The TiO2-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 TiO2 nanorod electrode doped with 0.25 \% of Nb showed 65 \% improvement in photocurrent as compared with the pristine TiO2 nanorod electrode. Furthermore, by simply changing the light illuminating direction, the improvement of charge transport induced by Nb doping could be easily identified. {\textcopyright} 2016 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

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author = "Hsin-Yi Wang and Hongbin Yang and Liping Zhang and Jiazang Chen and Bin Liu",

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T1 - Niobium Doping Enhances Charge Transport in TiO2 Nanorods

AU - Wang, Hsin-Yi

AU - Yang, Hongbin

AU - Zhang, Liping

AU - Chen, Jiazang

AU - Liu, Bin

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - The charge-transport behavior of nanostructured titanium dioxide (TiO2) is of great interest because of the wide range of applications. In this work, we demonstrate a facile approach to improve electron transport in TiO2 nanorods (NRs) by introducing niobium (Nb) dopant into the lattice of TiO2. The TiO2-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 TiO2 nanorod electrode doped with 0.25 % of Nb showed 65 % improvement in photocurrent as compared with the pristine TiO2 nanorod electrode. Furthermore, by simply changing the light illuminating direction, the improvement of charge transport induced by Nb doping could be easily identified. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

AB - The charge-transport behavior of nanostructured titanium dioxide (TiO2) is of great interest because of the wide range of applications. In this work, we demonstrate a facile approach to improve electron transport in TiO2 nanorods (NRs) by introducing niobium (Nb) dopant into the lattice of TiO2. The TiO2-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 TiO2 nanorod electrode doped with 0.25 % of Nb showed 65 % improvement in photocurrent as compared with the pristine TiO2 nanorod electrode. Furthermore, by simply changing the light illuminating direction, the improvement of charge transport induced by Nb doping could be easily identified. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

KW - charge transport

KW - electron transport

KW - photocurrent

KW - titanium dioxide

KW - water oxidation

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DO - 10.1002/cnma.201600035

M3 - RGC 21 - Publication in refereed journal

SN - 2199-692X

VL - 2

SP - 660

EP - 664

JO - ChemNanoMat

JF - ChemNanoMat

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