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Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state

M. E. A. Warwick, D. Barreca, E. Bontempi, G. Carraro, A. Gasparotto, C. Maccato, K. Kaunisto, T. -P. Ruoko, H. Lemmetyinen, C. Sada, Y. Goenuellue, S. Mathur, Michael Warwick Orcid Logo

Phys. Chem. Chem. Phys., Volume: 17, Issue: 19, Pages: 12899 - 12907

Swansea University Author: Michael Warwick Orcid Logo

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DOI (Published version): 10.1039/c5cp01636c

Abstract

Pt/α-Fe2O3 nanocomposites were synthesized on fluorine-doped tin oxide (FTO) substrates by a sequential plasma enhanced-chemical vapor deposition (PE-CVD)/radio frequency (RF) sputtering approach, tailoring the overall Pt content as a function of sputtering time. The chemico-physical properties of t...

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Published in: Phys. Chem. Chem. Phys.
ISSN: 1463-9076 1463-9084
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa32764
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spelling 2017-04-03T13:22:33.8497414 v2 32764 2017-03-29 Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state 9fdabb7283ffccc5898cc543305475cf 0000-0002-9028-1250 Michael Warwick Michael Warwick true false 2017-03-29 FGSEN Pt/α-Fe2O3 nanocomposites were synthesized on fluorine-doped tin oxide (FTO) substrates by a sequential plasma enhanced-chemical vapor deposition (PE-CVD)/radio frequency (RF) sputtering approach, tailoring the overall Pt content as a function of sputtering time. The chemico-physical properties of the as-prepared systems were extensively investigated by means of complementary techniques, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission-scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDXS), secondary ion mass spectrometry (SIMS), and optical absorption spectroscopy, and compared to those of the homologous Pt/α-Fe2O3 systems annealed in air prior and/or after sputtering. The obtained results evidenced that the material compositional, structural and morphological features, with particular regard to the Pt oxidation state and hematite nano-organization, could be finely tailored as a function of the adopted processing conditions. Pt/α-Fe2O3 systems were finally tested as photoanodes in photoelectrochemical (PEC) water splitting experiments, evidencing a remarkable interplay between functional performances and the above-mentioned material properties, as also testified by transient absorption spectroscopy (TAS) results. Journal Article Phys. Chem. Chem. Phys. 17 19 12899 12907 1463-9076 1463-9084 31 12 2015 2015-12-31 10.1039/c5cp01636c http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&amp;SrcAuth=ORCID&amp;SrcApp=OrcidOrg&amp;DestLinkType=FullRecord&amp;DestApp=WOS_CPL&amp;KeyUT=WOS:000354195300053&amp;KeyUID=WOS:000354195300053 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2017-04-03T13:22:33.8497414 2017-03-29T09:52:55.6902999 M. E. A. Warwick 1 D. Barreca 2 E. Bontempi 3 G. Carraro 4 A. Gasparotto 5 C. Maccato 6 K. Kaunisto 7 T. -P. Ruoko 8 H. Lemmetyinen 9 C. Sada 10 Y. Goenuellue 11 S. Mathur 12 Michael Warwick 0000-0002-9028-1250 13
title Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state
spellingShingle Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state
Michael Warwick
title_short Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state
title_full Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state
title_fullStr Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state
title_full_unstemmed Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state
title_sort Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state
author_id_str_mv 9fdabb7283ffccc5898cc543305475cf
author_id_fullname_str_mv 9fdabb7283ffccc5898cc543305475cf_***_Michael Warwick
author Michael Warwick
author2 M. E. A. Warwick
D. Barreca
E. Bontempi
G. Carraro
A. Gasparotto
C. Maccato
K. Kaunisto
T. -P. Ruoko
H. Lemmetyinen
C. Sada
Y. Goenuellue
S. Mathur
Michael Warwick
format Journal article
container_title Phys. Chem. Chem. Phys.
container_volume 17
container_issue 19
container_start_page 12899
publishDate 2015
institution Swansea University
issn 1463-9076
1463-9084
doi_str_mv 10.1039/c5cp01636c
url http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&amp;SrcAuth=ORCID&amp;SrcApp=OrcidOrg&amp;DestLinkType=FullRecord&amp;DestApp=WOS_CPL&amp;KeyUT=WOS:000354195300053&amp;KeyUID=WOS:000354195300053
document_store_str 0
active_str 0
description Pt/α-Fe2O3 nanocomposites were synthesized on fluorine-doped tin oxide (FTO) substrates by a sequential plasma enhanced-chemical vapor deposition (PE-CVD)/radio frequency (RF) sputtering approach, tailoring the overall Pt content as a function of sputtering time. The chemico-physical properties of the as-prepared systems were extensively investigated by means of complementary techniques, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission-scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDXS), secondary ion mass spectrometry (SIMS), and optical absorption spectroscopy, and compared to those of the homologous Pt/α-Fe2O3 systems annealed in air prior and/or after sputtering. The obtained results evidenced that the material compositional, structural and morphological features, with particular regard to the Pt oxidation state and hematite nano-organization, could be finely tailored as a function of the adopted processing conditions. Pt/α-Fe2O3 systems were finally tested as photoanodes in photoelectrochemical (PEC) water splitting experiments, evidencing a remarkable interplay between functional performances and the above-mentioned material properties, as also testified by transient absorption spectroscopy (TAS) results.
published_date 2015-12-31T03:40:16Z
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score 11.036116