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Fe2O3-TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation

Tutkimustuotosvertaisarvioitu

Standard

Fe2O3-TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation. / Barreca, Davide; Carraro, Giorgio; Gasparotto, Alberto; Maccato, Chiara; Warwick, Michael E A; Kaunisto, Kimmo; Sada, Cinzia; Turner, Stuart; Gönüllü, Yakup; Ruoko, Tero-Petri; Borgese, Laura; Bontempi, Elza; Van Tendeloo, Gustaaf; Lemmetyinen, Helge; Mathur, Sanjay.

julkaisussa: Advanced Materials Interfaces, Vuosikerta 2, Nro 17, 2015.

Tutkimustuotosvertaisarvioitu

Harvard

Barreca, D, Carraro, G, Gasparotto, A, Maccato, C, Warwick, MEA, Kaunisto, K, Sada, C, Turner, S, Gönüllü, Y, Ruoko, T-P, Borgese, L, Bontempi, E, Van Tendeloo, G, Lemmetyinen, H & Mathur, S 2015, 'Fe2O3-TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation', Advanced Materials Interfaces, Vuosikerta. 2, Nro 17. https://doi.org/10.1002/admi.201500313

APA

Barreca, D., Carraro, G., Gasparotto, A., Maccato, C., Warwick, M. E. A., Kaunisto, K., ... Mathur, S. (2015). Fe2O3-TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation. Advanced Materials Interfaces, 2(17). https://doi.org/10.1002/admi.201500313

Vancouver

Barreca D, Carraro G, Gasparotto A, Maccato C, Warwick MEA, Kaunisto K et al. Fe2O3-TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation. Advanced Materials Interfaces. 2015;2(17). https://doi.org/10.1002/admi.201500313

Author

Barreca, Davide ; Carraro, Giorgio ; Gasparotto, Alberto ; Maccato, Chiara ; Warwick, Michael E A ; Kaunisto, Kimmo ; Sada, Cinzia ; Turner, Stuart ; Gönüllü, Yakup ; Ruoko, Tero-Petri ; Borgese, Laura ; Bontempi, Elza ; Van Tendeloo, Gustaaf ; Lemmetyinen, Helge ; Mathur, Sanjay. / Fe2O3-TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation. Julkaisussa: Advanced Materials Interfaces. 2015 ; Vuosikerta 2, Nro 17.

Bibtex - Lataa

@article{dca8febb137c40b4924856642ee099fd,
title = "Fe2O3-TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation",
abstract = "Harnessing solar energy for the production of clean hydrogen by photo-electrochemical water splitting represents a very attractive, but challenging approach for sustainable energy generation. In this regard, the fabrication of Fe2O3-TiO2 photoanodes is reported, showing attractive performances [≈2.0 mA cm-2 at 1.23 V vs. the reversible hydrogen electrode in 1 M NaOH] under simulated one-sun illumination. This goal, corresponding to a tenfold photoactivity enhancement with respect to bare Fe2O3, is achieved by atomic layer deposition of TiO2 over hematite (α-Fe2O3) nanostructures fabricated by plasma enhanced-chemical vapor deposition and final annealing at 650 °C. The adopted approach enables an intimate Fe2O3-TiO2 coupling, resulting in an electronic interplay at the Fe2O3/TiO2 interface. The reasons for the photocurrent enhancement determined by TiO2 overlayers with increasing thickness are unraveled by a detailed chemico-physical investigation, as well as by the study of photo-generated charge carrier dynamics. Transient absorption spectroscopy shows that the increased photoelectrochemical response of heterostructured photoanodes compared to bare hematite is due to an enhanced separation of photogenerated charge carriers and more favorable hole dynamics for water oxidation. The stable responses obtained even in simulated seawater provides a feasible route in view of the eventual large-scale generation of renewable energy.",
keywords = "FeO, Nano-heterostructures, Photoelectrochemistry, TiO, Water splitting",
author = "Davide Barreca and Giorgio Carraro and Alberto Gasparotto and Chiara Maccato and Warwick, {Michael E A} and Kimmo Kaunisto and Cinzia Sada and Stuart Turner and Yakup G{\"o}n{\"u}ll{\"u} and Tero-Petri Ruoko and Laura Borgese and Elza Bontempi and {Van Tendeloo}, Gustaaf and Helge Lemmetyinen and Sanjay Mathur",
year = "2015",
doi = "10.1002/admi.201500313",
language = "English",
volume = "2",
journal = "Advanced Materials Interfaces",
issn = "2196-7350",
publisher = "Wiley",
number = "17",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Fe2O3-TiO2 Nano-heterostructure Photoanodes for Highly Efficient Solar Water Oxidation

AU - Barreca, Davide

AU - Carraro, Giorgio

AU - Gasparotto, Alberto

AU - Maccato, Chiara

AU - Warwick, Michael E A

AU - Kaunisto, Kimmo

AU - Sada, Cinzia

AU - Turner, Stuart

AU - Gönüllü, Yakup

AU - Ruoko, Tero-Petri

AU - Borgese, Laura

AU - Bontempi, Elza

AU - Van Tendeloo, Gustaaf

AU - Lemmetyinen, Helge

AU - Mathur, Sanjay

PY - 2015

Y1 - 2015

N2 - Harnessing solar energy for the production of clean hydrogen by photo-electrochemical water splitting represents a very attractive, but challenging approach for sustainable energy generation. In this regard, the fabrication of Fe2O3-TiO2 photoanodes is reported, showing attractive performances [≈2.0 mA cm-2 at 1.23 V vs. the reversible hydrogen electrode in 1 M NaOH] under simulated one-sun illumination. This goal, corresponding to a tenfold photoactivity enhancement with respect to bare Fe2O3, is achieved by atomic layer deposition of TiO2 over hematite (α-Fe2O3) nanostructures fabricated by plasma enhanced-chemical vapor deposition and final annealing at 650 °C. The adopted approach enables an intimate Fe2O3-TiO2 coupling, resulting in an electronic interplay at the Fe2O3/TiO2 interface. The reasons for the photocurrent enhancement determined by TiO2 overlayers with increasing thickness are unraveled by a detailed chemico-physical investigation, as well as by the study of photo-generated charge carrier dynamics. Transient absorption spectroscopy shows that the increased photoelectrochemical response of heterostructured photoanodes compared to bare hematite is due to an enhanced separation of photogenerated charge carriers and more favorable hole dynamics for water oxidation. The stable responses obtained even in simulated seawater provides a feasible route in view of the eventual large-scale generation of renewable energy.

AB - Harnessing solar energy for the production of clean hydrogen by photo-electrochemical water splitting represents a very attractive, but challenging approach for sustainable energy generation. In this regard, the fabrication of Fe2O3-TiO2 photoanodes is reported, showing attractive performances [≈2.0 mA cm-2 at 1.23 V vs. the reversible hydrogen electrode in 1 M NaOH] under simulated one-sun illumination. This goal, corresponding to a tenfold photoactivity enhancement with respect to bare Fe2O3, is achieved by atomic layer deposition of TiO2 over hematite (α-Fe2O3) nanostructures fabricated by plasma enhanced-chemical vapor deposition and final annealing at 650 °C. The adopted approach enables an intimate Fe2O3-TiO2 coupling, resulting in an electronic interplay at the Fe2O3/TiO2 interface. The reasons for the photocurrent enhancement determined by TiO2 overlayers with increasing thickness are unraveled by a detailed chemico-physical investigation, as well as by the study of photo-generated charge carrier dynamics. Transient absorption spectroscopy shows that the increased photoelectrochemical response of heterostructured photoanodes compared to bare hematite is due to an enhanced separation of photogenerated charge carriers and more favorable hole dynamics for water oxidation. The stable responses obtained even in simulated seawater provides a feasible route in view of the eventual large-scale generation of renewable energy.

KW - FeO

KW - Nano-heterostructures

KW - Photoelectrochemistry

KW - TiO

KW - Water splitting

U2 - 10.1002/admi.201500313

DO - 10.1002/admi.201500313

M3 - Article

VL - 2

JO - Advanced Materials Interfaces

JF - Advanced Materials Interfaces

SN - 2196-7350

IS - 17

ER -