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Self-assembled hematite (α-Fe2O3) nanotube arrays for photoelectrocatalytic degradation of azo dye under simulated solar light irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
47499 46473 2010 7 PDF Available
Title
Self-assembled hematite (α-Fe2O3) nanotube arrays for photoelectrocatalytic degradation of azo dye under simulated solar light irradiation
Abstract

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.

Keywords
Hematite (α-Fe2O3); Anodization; Nanotubes; Photoelectrochemical; Photoelectrocatalytic
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Self-assembled hematite (α-Fe2O3) nanotube arrays for photoelectrocatalytic degradation of azo dye under simulated solar light irradiation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 95, Issues 3–4, 6 April 2010, Pages 423–429
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us