Journal article 558 views
Pt-functionalized Fe2O3photoanodes for solar water splitting: the role of hematite nano-organization and the platinum redox state
Phys. Chem. Chem. Phys., Volume: 17, Issue: 19, Pages: 12899 - 12907
Swansea University Author:
Michael Warwick
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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...
| Published in: | Phys. Chem. Chem. Phys. |
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| ISSN: | 1463-9076 1463-9084 |
| Published: |
2015
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa32764 |
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| 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 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. |
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| Issue: |
19 |
| Start Page: |
12899 |
| End Page: |
12907 |