Journal
CHEMSUSCHEM
Volume 5, Issue 12, Pages 2341-2347Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201200484
Keywords
colloids; electrochemistry; microporous materials; tungsten; thin films
Funding
- FAPESP [98/14324-0]
- FINEP
- CNPq (INCT program)
- CAPES
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [98/14324-0] Funding Source: FAPESP
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This work describes a synthetic method to produce a WO3 nanowire as well as to prepare photoanodes by colloidal nanowire deposition. We also studied the influence of a nanowire phase on the photoanode performance for water splitting. Among the nanowires synthesized by using nonhydrolytic media, the orthorhombic WO3 center dot H2O nanowire produced a photoanode with excellent performance (a photocurrent of 1.96 mA?cm-2 at 1.23 VRHE) and good photocurrent stability during long-term analysis (chronoamperometry test). The structural and photoelectrochemical characterization showed the importance of nanostructural features such as exposed (200), (020), and (002) facets and porosity in the WO3 photoanode performance.
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