Curved Pt(111) in Nature Communications
A study on a curved Pt(111) crystal produced by BihurCrystal has been published in Nature Communications this month. [Read the paper here.]
Platinum is widely used as a catalyst in a huge number of relevant processes. Perhaps most well-known is its role in catalytic converters, where Pt catalyzes the oxidation of carbon monoxide, converting toxic CO to the more harmless CO2.
In spite of decades of research and their extensive use in industrial applications, catalytic processes are still not fully understood at the most basic level. In order to study catalytic reactions at the atomic scale, clean metal surfaces in UHV can serve as model systems. Surface defects or steps are often preferred adsorption sites with enhanced catalytic activity. Stepped surfaces therefore have much to offer in the way of understanding the role of defects in the catalytic process.
In their newly published paper, Walter et al. perform x-ray photoelectron spectroscopy measurements on a curved Pt(111) crystal – i.e. a stepped crystal with a continuously varying step-step distance – to investigate the effect of steps on the structural stability of the clean surface as well as on the hierarchy of CO adsorption sites, which determine catalytic activity.
The paper of Walter et al. has been added to BihurCrystal’s portfolio, where a summary of the paper can be found.
The XPS measurements were taken at beamline I-311 of the MAX IV Laboratory in Lund, Sweden.
Click here to read the full paper on the Nature Communications website.
Read News Coverage from
The MAX IV Laboratory (Lund, Sweden): MAX IV Laboratory Research in Nature Communications
Donostia International Physics Center (San Sebastián, Spain): Why Curve a Platinum Crystal?
Walter, A. L.; Schiller, F.; Corso, M.; Merte, L. R.; Bertram, F.; Lobo-Checa, J.; Shipilin, M.; Gustafson, J.; Lundgren, E.; Brión-Ríos, A. X.; Cabrera-Sanfelix, P.; Sánchez-Portal, D. & Ortega, J. E.
X-ray photoemission analysis of clean and carbon monoxide-chemisorbed platinum(111) stepped surfaces using a curved crystal
Nature Communications, 2015, 6, 8903