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

Deutsches Elektronen-Synchrotron (DESY)

Universität Hamburg

Uta Hejral

Deutsches Elektronen-Synchrotron (DESY)

Universität Hamburg

Uta Ruett

Deutsches Elektronen-Synchrotron (DESY)

Olof Gutowski

Deutsches Elektronen-Synchrotron (DESY)

Per-Anders Carlsson

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Kompetenscentrum katalys (KCK)

Magnus Skoglundh

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Kompetenscentrum katalys (KCK)

Edvin Lundgren

Lunds universitet

Science

0036-8075 (ISSN)

Vol. 343 6172 758-761

Drivkrafter

Hållbar utveckling

Styrkeområden

Nanovetenskap och nanoteknik

Transport

Energi

Materialvetenskap

Ämneskategorier

Fysikalisk kemi

Kemiska processer

Atom- och molekylfysik och optik

Den kondenserade materiens fysik

Fundament

Grundläggande vetenskaper

DOI

10.1126/science.1246834