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Published in: Journal of Materials Science 14/2018

18-04-2018 | Ceramics

Co/Mn co-doped TiO2 nanotube arrays for enhanced photoelectrochemical properties: experimental and DFT investigations

Authors: Yingqi Wan, Aoni Xu, Chaofang Dong, Chang He, Kui Xiao, Yuwan Tian, Xiaogang Li

Published in: Journal of Materials Science | Issue 14/2018

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Abstract

In this study, we used first principle calculations to investigate the electronic properties of TiO2 modified with eight different elements. Co/Mn co-doped TiO2 nanotube arrays, which had the smallest band gap, were subsequently prepared using electrochemical anodization followed by atomic force microscopy (AFM) and field emission scanning electron microscopy (FE-SEM) measurements. The results showed that the TiO2 nanotube arrays were highly ordered and well aligned. Finally, the photoconversion efficiency was measured using photoelectrochemical experiments and, under the same conditions, the photoconversion efficiency under visible light increased approximately three times from 9.35% for the undoped TiO2 nanotubes to 21.25% for the Co/Mn co-doped TiO2 nanotubes. These results indicate that Co/Mn co-doped TiO2 nanotube arrays can improve the efficiency of visible-light utilization and could be a promising material in such fields as photocatalysis and solar cells.

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Metadata
Title
Co/Mn co-doped TiO2 nanotube arrays for enhanced photoelectrochemical properties: experimental and DFT investigations
Authors
Yingqi Wan
Aoni Xu
Chaofang Dong
Chang He
Kui Xiao
Yuwan Tian
Xiaogang Li
Publication date
18-04-2018
Publisher
Springer US
Published in
Journal of Materials Science / Issue 14/2018
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-2316-2

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