Visible-light-driven Fe2O3 nanoparticles/TiO2 array photoelectrode and its photoelectrochemical property

Visible-light-driven Fe2O3 nanoparticles/TiO2 array photoelectrode and its photoelectrochemical... Keywords Fe O  TiO nanorods array  Photoelectrochemical  Visible light 2 3 2 Introduction Photocatalysis using semiconductors and solar energy has received considerable attention due to the rising global energy requirement and subsequent demand for new energy sources [1–3]. Since the first paper on photoelectrochemical (PEC) water splitting published in 1972, there have been many works focusing on this subject [4–6]. Despite the mechanism still needing to be fully understood, the current results show that the semiconductor materials as well as the electrodes assembled by the semiconductors are most important in affecting efficiency. Visible light utilization and charge separation are widely believed to be the most challenging for PEC. It is agreed that a stable and firm electrode with reasonable visible light absorption and promoted charge separation is an effective way to enhance the PEC efficiency. Fe O is a promising visible light response semiconductor because of its stability, 2 3 favorable band gap (*2.2 eV), abundance, and low cost. However, its low photoconversion efficiency restricts its practical application [7]. Various strategies such as tailoring the morphology, impurity doping, and heterojunction construction have been developed to enhance the photoconversion efficiency [8–10]. Construct- ing a microstructured electrode for http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Visible-light-driven Fe2O3 nanoparticles/TiO2 array photoelectrode and its photoelectrochemical property

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Publisher
Springer Netherlands
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2570-3
Publisher site
See Article on Publisher Site

Abstract

Keywords Fe O  TiO nanorods array  Photoelectrochemical  Visible light 2 3 2 Introduction Photocatalysis using semiconductors and solar energy has received considerable attention due to the rising global energy requirement and subsequent demand for new energy sources [1–3]. Since the first paper on photoelectrochemical (PEC) water splitting published in 1972, there have been many works focusing on this subject [4–6]. Despite the mechanism still needing to be fully understood, the current results show that the semiconductor materials as well as the electrodes assembled by the semiconductors are most important in affecting efficiency. Visible light utilization and charge separation are widely believed to be the most challenging for PEC. It is agreed that a stable and firm electrode with reasonable visible light absorption and promoted charge separation is an effective way to enhance the PEC efficiency. Fe O is a promising visible light response semiconductor because of its stability, 2 3 favorable band gap (*2.2 eV), abundance, and low cost. However, its low photoconversion efficiency restricts its practical application [7]. Various strategies such as tailoring the morphology, impurity doping, and heterojunction construction have been developed to enhance the photoconversion efficiency [8–10]. Construct- ing a microstructured electrode for

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jun 17, 2016

References

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