Peculiar Nonmonotonic Water Incorporation in Oxides Detected by Local In Situ Optical Absorption Spectroscopy | Zendy

Yu Ji Haeng | Zendy; Lee JongSook | Zendy; Maier Joachim | Zendy

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Peculiar Nonmonotonic Water Incorporation in Oxides Detected by Local In Situ Optical Absorption Spectroscopy

Author(s) -

Yu Ji Haeng,

Lee JongSook,

Maier Joachim

Publication year - 2007

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200701765

Subject(s) - chemistry , kinetics , diffusion , hydrogen , oxygen , absorption (acoustics) , spectroscopy , oxide , chemical physics , absorption spectroscopy , photochemistry , proton , in situ , decoupling (probability) , analytical chemistry (journal) , materials science , thermodynamics , optics , organic chemistry , physics , quantum mechanics , composite material , control engineering , engineering

Hydrogen first, oxygen next : The kinetics of water incorporation in situ has been followed by spatially resolved local optical absorption spectroscopy as well as by integral conductance by using SrTiO 3 as a model oxide proton conductor. The surprising nonmonotonic redox kinetics can be explained by a decoupling of the H 2 O diffusion into a fast diffusion of hydrogen and a more sluggish diffusion of oxygen (see picture).

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