TY - JOUR
T1 - Self-assembled hematite (α-Fe2O3) nanotube arrays for photoelectrocatalytic degradation of azo dye under simulated solar light irradiation
AU - Zhang, Zhonghai
AU - Hossain, Md Faruk
AU - Takahashi, Takakazu
PY - 2010/4/6
Y1 - 2010/4/6
N2 - Self-assembly aligned hematite (α-Fe2O3) nanotube arrays (α-Fe2O3 NTs) were successfully prepared on the Fe foils by a simple two-step electrochemical anodization method in NH4F organic electrolyte. The α-Fe2O3 NTs electrodes were characterized by field-emission scanning electron microscopy, energy dispersive X-ray spectroscopy, grazing incidence X-ray diffraction, UV-vis absorbance spectra, and X-ray photoelectron spectroscopy. The resulting α-Fe2O3 NTs showed a pore diameter of 40 nm, thickness of 2 μm, and a minimum wall thickness of ∼10 nm. The systematic photoelectrochemical responses on the α-Fe2O3 NTs electrodes were presented. The maximum photoconversion efficiencies of 0.51% and 0.60% were collected at 0.3 V under illumination of visible light and simulated solar light (AM 1.5G), respectively. The photoelectrocatalytic (PEC) and photocatalytic (PC) activities of the α-Fe2O3 NTs electrodes were evaluated by degradation of azo dye. The significant PEC and PC performance indicated that the α-Fe2O3 NTs electrodes were an effective photoelectrode under visible light and simulated solar light illumination.
AB - Self-assembly aligned hematite (α-Fe2O3) nanotube arrays (α-Fe2O3 NTs) were successfully prepared on the Fe foils by a simple two-step electrochemical anodization method in NH4F organic electrolyte. The α-Fe2O3 NTs electrodes were characterized by field-emission scanning electron microscopy, energy dispersive X-ray spectroscopy, grazing incidence X-ray diffraction, UV-vis absorbance spectra, and X-ray photoelectron spectroscopy. The resulting α-Fe2O3 NTs showed a pore diameter of 40 nm, thickness of 2 μm, and a minimum wall thickness of ∼10 nm. The systematic photoelectrochemical responses on the α-Fe2O3 NTs electrodes were presented. The maximum photoconversion efficiencies of 0.51% and 0.60% were collected at 0.3 V under illumination of visible light and simulated solar light (AM 1.5G), respectively. The photoelectrocatalytic (PEC) and photocatalytic (PC) activities of the α-Fe2O3 NTs electrodes were evaluated by degradation of azo dye. The significant PEC and PC performance indicated that the α-Fe2O3 NTs electrodes were an effective photoelectrode under visible light and simulated solar light illumination.
KW - Anodization
KW - Hematite (α-FeO)
KW - Nanotubes
KW - Photoelectrocatalytic
KW - Photoelectrochemical
UR - https://www.scopus.com/pages/publications/77949281099
U2 - 10.1016/j.apcatb.2010.01.022
DO - 10.1016/j.apcatb.2010.01.022
M3 - 文章
AN - SCOPUS:77949281099
SN - 0926-3373
VL - 95
SP - 423
EP - 429
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
IS - 3-4
ER -