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Plasma-Assisted Fabrication of Fe2O3 - Co3O4 Nanomaterials as Anodes for Photoelectrochemical Water Splitting

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Details

Original languageEnglish
Pages (from-to)191-200
Number of pages10
JournalPlasma Processes and Polymers
Volume13
Issue number1
Early online date2015
DOIs
Publication statusPublished - 1 Jan 2016
Publication typeA1 Journal article-refereed

Abstract

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 multi-technique 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.

Keywords

  • Co3O4, Fe2O3, plasma-enhanced chemical vapor deposition (PE-CVD), sputtering, water splitting

Publication forum classification

Field of science, Statistics Finland