Unraveling the Surface Reactivity of Pristine and Ti-Doped Hematite with Water | Zendy

Pierre-Marie Deleuze | Zendy; H. Magnan | Zendy; Antoine Barbier | Zendy; Mathieu G. Silly | Zendy; B. Domenichini | Zendy; Céline Dupont | Zendy

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Unraveling the Surface Reactivity of Pristine and Ti-Doped Hematite with Water

Author(s) -

Pierre-Marie Deleuze,

H. Magnan,

Antoine Barbier,

Mathieu G. Silly,

B. Domenichini,

Céline Dupont

Publication year - 2021

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/acs.jpclett.1c03029

Subject(s) - hematite , doping , adsorption , dissociation (chemistry) , materials science , hydroxylation , aqueous solution , chemical engineering , titanium , x ray photoelectron spectroscopy , inorganic chemistry , nanotechnology , chemistry , metallurgy , organic chemistry , optoelectronics , engineering , enzyme

Water adsorption and dissociation on undoped and Ti-doped hematite thin films were investigated using near-ambient pressure photoemission and DFT calculations. A fine understanding of doping effects is of prime importance in the framework of photoanode efficiency in aqueous conditions. By comparison to pure Fe 2 O 3 surface, the Ti(2%)-Fe 2 O 3 surface shows a lower hydroxylation level. We demonstrate that titanium induces wide structural modifications of the surface, preventing it from reaching full hydroxylation.

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