Fe-doped TiO2 nanorods with enhanced electrochemical properties as efficient photoanode materials
Fe-doped TiO2 nanorods with enhanced electrochemical properties as efficient photoanode materials
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DOI：
10.1016/j.jallcom.2016.12.181
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发表时间：
2017-06-25
影响因子：
6.2
通讯作者：
Chtourou, R.
中科院分区：
文献类型：
--
作者：
Chakhari, W.;Ben Naceur, J.;Chtourou, R.
使用水热法，铁 (Fe) 掺杂的 TiO2 纳米棒 (NR) 光阳极在不同 Fe 掺杂浓度（0、5、7.5 和 10 mM）的氟掺杂氧化锡 (FTO) 基底上生长为白色均匀薄膜。该薄膜的扫描电子显微镜 (SEM) 图像显示出密集且垂直排列的 NR 阵列。研究了随着浓度的增加，Fe 掺杂对 TiO(2)NRs 光电阳极的结构光学和光电化学（PEC）性能的影响。通过电化学阻抗谱识别电荷积累过程和电荷转移特性。从莫特-肖特基图分析了施主密度和平带电势的铁掺杂浓度。光电阳极的短路电流(J(sc))和开路电压(V-oc)的变化与TiO(2)NRs的电子结构有关。掺杂 5 mM Fe 的光电流最高（0.55 mA）。 (C) 2016 年由 Elsevier B.V. 出版
Iron (Fe)-doped TiO2 nanorods (NRs) photoanodes were grown as white, homogeneous film on fluorine doped tin oxide (FTO) substrates with various Fe-doping concentrations (0, 5, 7.5, and 10 mM) using the hydrothermal method. Scanning electron microscopy (SEM) image of the film shows dense and vertically aligned NR arrays. The consequence of Fe-doping, at increasing concentrations, on the structure optical and photoelectrochemical (PEC) properties of the TiO(2)NRs photoanodes were investigated. Charge accumulation processes and charge transfer characteristics were identified by electrochemical impedance spectroscopy. The donor density and the flat-band potential of the Fe-doping concentration were analyzed from the Mott-Schottky plot. The changes in the short circuit current (J(sc)) and the open circuit voltage (V-oc) of the photoanodes are in relation with the electronic structure of the TiO(2)NRs. The ones doped with 5 mM of Fe display the highest photocurrent (0.55 mA). (C) 2016 Published by Elsevier B.V.