Journal
PLASMA PROCESSES AND POLYMERS
Volume 13, Issue 1, Pages 191-200Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.201500106
Keywords
Co3O4; Fe2O3; plasma-enhanced chemical vapor deposition (PE-CVD); sputtering; water splitting
Funding
- Seventh Framework Program (FP7) by the project SOLAROGENIX [NMP4-SL-2012-310333]
- Padova University
- SOLLEONE project [CPDR132937/13]
- Regione Lombardia-INSTM ATLANTE program
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Nanocomposite Fe2O3-Co3O4 photoanodes for photoelectrochemical H2O splitting were prepared by a plasma-assisted route. Specifically, Fe2O3 nanostructures were grown by plasma enhanced-chemical vapor deposition, followed by cobalt sputtering for different process durations. The systems were annealed in air after, or both prior and after, sputtering of Co, to analyze the treatment influence on functional performances. The interplay between processing conditions and chemico-physical features was investigated by a multitechnique characterization. Photocurrent density measurements in sunlight-assisted H2O splitting revealed a performance improvement upon Co3O4 loading. A cathodic shift of the onset potential was also observed, highlighting Co3O4 activity as catalyst for the oxygen evolution reaction.
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