Skip to Main content Skip to Navigation
Journal articles

Characterizing surface states in hematite nanorod photoanodes, both beneficial and detrimental to solar water splitting efficiency

Abstract : The perfomance of hematite and Ti-substituted hematite nanorods as photoanodes for solar water splitting was quantitavely evaluated from photoelectrochemical point of view. The nanostructure, morphology and chemical / electronic structure were characterized using various complementary methods, including X-ray diffraction, electron microscopy, X-ray photoelectron spectroscopy and scanning transmission X-ray microscopy. The presence of both reductive and oxidative surface states was evidenced and their impact on the photoelectrochemical efficiency was characterized. We show that both electronic conduction enhancement provided by the Ti substitution and charge transfer promoted by oxidative surface states improve solar water splitting performance.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-02934466
Contributor : Dana Stanescu <>
Submitted on : Wednesday, September 9, 2020 - 12:57:16 PM
Last modification on : Wednesday, October 14, 2020 - 7:43:08 AM

Identifiers

Citation

Dana Stanescu, Mekan Piriyev, Victoria Villard, Cristian Mocuta, Adrien Besson, et al.. Characterizing surface states in hematite nanorod photoanodes, both beneficial and detrimental to solar water splitting efficiency. Journal of Materials Chemistry A, Royal Society of Chemistry, 2020, 8, pp.20513. ⟨10.1039/D0TA06524B⟩. ⟨hal-02934466⟩

Share

Metrics

Record views

73