Valence instability and photochemical reaction at surface of strongly correlated MgTi2O4
Source abstract
Abstract
We have studied surface electronic structure and light illumination effect of spinel-type MgTi2O4 with Ti3+(d1) electronic configuration. Ti4+ species are found at surfaces of MgTi2O4, which show photo-induced effect similar to the Ti4+-oxide semiconductors with surface depletion layer. MgTi2O4 with the surface Ti4+ states reacts with water for H2 emission, which is largely enhanced by light illumination.
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Research context
OpenAlex topics: Electronic and Structural Properties of Oxides · Luminescence Properties of Advanced Materials · Ferroelectric and Piezoelectric Materials
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Affiliations
University of Tokyo 1 Department of Complexity Science and Engineering, , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
University of Tokyo 2 Institute for Solid State Physics, , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
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