High-energy surface X-ray diffraction for fast surface structure determination
Artikel i vetenskaplig tidskrift, 2014
Understanding the interaction between surfaces and their surroundings is crucial in many materials-science fields such as catalysis, corrosion, and thin-film electronics, but existing characterization methods have not been capable of fully determining the structure of surfaces during dynamic processes, such as catalytic reactions, in a reasonable time frame. We demonstrate an x-ray-diffraction–based characterization method that uses high-energy photons (85 kiloelectron volts) to provide unexpected gains in data acquisition speed by several orders of magnitude and enables structural determinations of surfaces on time scales suitable for in situ studies. We illustrate the potential of high-energy surface x-ray diffraction by determining the structure of a Pd surface in situ during catalytic CO oxidation and follow dynamic restructuring of the surface with subsecond time resolution.
Författare
Johan Gustafson
Lunds Universitet
Mikhail Shipilin
Lunds Universitet
Chu Zhang
Lunds Universitet
Andreas Stierle
Deutsche Elektronen-Synchrotron
Universitat Hamburg
Uta Hejral
Deutsche Elektronen-Synchrotron
Universitat Hamburg
Uta Ruett
Deutsche Elektronen-Synchrotron
Olof Gutowski
Deutsche Elektronen-Synchrotron
Per-Anders Carlsson
Kompetenscentrum katalys (KCK)
Chalmers, Kemi- och bioteknik, Teknisk ytkemi
Magnus Skoglundh
Kompetenscentrum katalys (KCK)
Chalmers, Kemi- och bioteknik, Teknisk ytkemi
Edvin Lundgren
Lunds Universitet
Science
0036-8075 (ISSN)
Vol. 343 6172 758-761Drivkrafter
Hållbar utveckling
Styrkeområden
Nanovetenskap och nanoteknik
Transport
Energi
Materialvetenskap
Ämneskategorier (SSIF 2011)
Fysikalisk kemi
Kemiska processer
Atom- och molekylfysik och optik
Den kondenserade materiens fysik
Fundament
Grundläggande vetenskaper
DOI
10.1126/science.1246834