TY - JOUR
T1 - Electrochemically induced Ti3+ self-doping of TiO2 nanotube arrays for improved photoelectrochemical water splitting
AU - Song, Jingnan
AU - Zheng, Maojun
AU - Yuan, Xiaoliang
AU - Li, Qiang
AU - Wang, Faze
AU - Ma, Liguo
AU - You, Yuxiu
AU - Liu, Shaohua
AU - Liu, Pengjie
AU - Jiang, Dongkai
AU - Ma, Li
AU - Shen, Wenzhong
N1 - Publisher Copyright:
© 2017, Springer Science+Business Media New York.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - We report a facile electrochemical reduction method to synthesize Ti3+-self-doped TiO2 nanotube arrays (TNTs), where the effects of reduction duration and potential on the photoelectrochemical performance were systematically investigated. The X-ray photoelectron spectroscopy and electron paramagnetic resonance spectra confirmed the presence of Ti3+ in the TNTs. Under the optimum reduction condition, the Ti3+-self-doped TNTs exhibited remarkably enhanced photocurrent density and photoconversion efficiency, which were nearly 3.1 and 1.75 times that of pristine TNTs, respectively. The enhancement of PEC performance is due to the improved electrical conductivity, accelerated charge transfer rate at the TNTs/electrolyte interface, as well as the improved visible light response, which is elucidated by electrochemical impedance spectra, Mott–Schottky, and UV–Vis diffuse reflection spectra.
AB - We report a facile electrochemical reduction method to synthesize Ti3+-self-doped TiO2 nanotube arrays (TNTs), where the effects of reduction duration and potential on the photoelectrochemical performance were systematically investigated. The X-ray photoelectron spectroscopy and electron paramagnetic resonance spectra confirmed the presence of Ti3+ in the TNTs. Under the optimum reduction condition, the Ti3+-self-doped TNTs exhibited remarkably enhanced photocurrent density and photoconversion efficiency, which were nearly 3.1 and 1.75 times that of pristine TNTs, respectively. The enhancement of PEC performance is due to the improved electrical conductivity, accelerated charge transfer rate at the TNTs/electrolyte interface, as well as the improved visible light response, which is elucidated by electrochemical impedance spectra, Mott–Schottky, and UV–Vis diffuse reflection spectra.
UR - https://www.scopus.com/pages/publications/85014051830
U2 - 10.1007/s10853-017-0930-z
DO - 10.1007/s10853-017-0930-z
M3 - 文章
AN - SCOPUS:85014051830
SN - 0022-2461
VL - 52
SP - 6976
EP - 6986
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 12
ER -
