Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 19, Issue 1, Pages 31-35Publisher
SPRINGER
DOI: 10.1007/s10008-014-2495-y
Keywords
Water splitting; Photoanode; Oxygen evolution; Solar energy; Vanadium oxide; Nanostructure
Categories
Funding
- UK National Academy
- EPSRC [EP/G03768X/1]
- Engineering and Physical Sciences Research Council [1094110] Funding Source: researchfish
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A one-step method of preparing photoelectrochemically active nanostructured BiVO4 films is reported based on thermolysis (500 A degrees C in air) of a polyethylene glycol (PEG300) paint-on precursor solution containing Bi3+ (as nitrate) and VO4 (3-) (as the metavanadate ammonium salt). Films are formed directly on tin-doped indium oxide (ITO) substrates and characterised by electron microscopy (scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS)), X-ray diffraction, Raman spectroscopy, and photoelectrochemistry. The nanocrystalline film exhibited typically up to 52 % incident photon to current efficiency (IPCE) at 1.0 V vs. saturated calomel electrode (SCE) in aqueous 0.5 M Na2SO4 with oxalate, strongly enhancing photocurrents.
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