Spectroscopic Link between Adsorption Site Occupation and Local Surface Chemical Reactivity

Spectroscopic link between adsorption site occupation and local surface chemical reactivity.

In this Letter we show that sequences of adsorbate-induced shifts of surface core level (SCL) x-ray photoelectron spectra contain profound information on surface changes of electronic structure and reactivity. Energy shifts and intensity changes of time-lapsed spectral components follow simple rules, from which adsorption sites are directly determined. Theoretical calculations rationalize the r...

Local Chemical Reactivity of a Metal Alloy Surface.

High Surface Reactivity and Water Adsorption on NiFe2O4 (111) Surfaces

Transition metal-doped ferrites are attractive candidates for a wide range of applications including catalysis and electronic and magnetic devices. Although their bulk characteristics are well-understood, very little is known about their surface properties at the molecular level. Here, we demonstrate high reactivity of NiFe2O4 (111) surfaces, a Nidoped ferrite, by elucidating the surface struct...

The Relationship between Occupation and Semen Quality

A link between reactivity and local structure in acid catalysis on zeolites.

The extent to which spatial constraints influence rates and pathways in catalysis depends on the structure of intermediates, transition states, and active sites involved. We aim to answer, as we seek insights into catalytic mechanisms and site requirements, persistent questions about the potential for controlling rates and selectivities by rational design of spatial constraints around active si...