Characterizing surface states in hematite nanorod photoanodes, both beneficial and detrimental to solar water splitting efficiency - Archive ouverte HAL Access content directly
Journal Articles Journal of Materials Chemistry A Year : 2020

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.
No file

Dates and versions

hal-02934466 , version 1 (09-09-2020)

Identifiers

Cite

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, 2020, 8, pp.20513. ⟨10.1039/D0TA06524B⟩. ⟨hal-02934466⟩
121 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More