Template-free nanostructured fluorine-doped tin oxide scaffolds for photoelectrochemical water splitting

Ivan Garcia-Torregrosa, Jochem H.J. Wijten, Silvia Zanoni, Freddy Oropeza Palacio, Jan Philipp Hofmann, Emiel Hensen, Bert M. Weckhuysen (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

16 Citaten (Scopus)
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Samenvatting

The synthesis and characterization of highly stable and conductive F:SnO 2 (FTO) nanopyramid arrays are investigated, and their use as scaffolds for water splitting is demonstrated. Current densities during the oxygen evolution reaction with a NiFeO x catalyst at 2 V vs reversible hydrogen electrode were increased 5-fold when substituting commercial FTO (TEC 15) by nanostructured FTO scaffolds. In addition, thin α-Fe 2O 3 films (∼50 nm thick) were employed as a proof of concept to show the effect of our nanostructured scaffolds during photoelectrochemical water splitting. Double-layer capacitance measurements showed a drastic increase of the relative electrochemically active surface area for the nanostructured samples, in agreement with the observed photocurrent enhancement, whereas UV-vis spectroscopy indicates full absorption of visible light at wavelengths below 600 nm.

Originele taal-2Engels
Pagina's (van-tot)36485-36496
Aantal pagina's12
TijdschriftACS Applied Materials & Interfaces
Volume11
Nummer van het tijdschrift40
DOI's
StatusGepubliceerd - 9 okt. 2019

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