Speaker: Vincent Benning
Title: Elucidating Reaction Kinetics with In-Situ Small- and Wide-Angle X-ray Scattering Experiments
Abstract: Nanocrystals have a highly dynamic structure, constantly reorganizing both during synthesis and during use in applications. Structural transformations can enhance or degrade their properties. Understanding the transformation kinetics is key in steering the nanocrystals towards a structure with desired properties. Tracking structural changes with real-space characterization faces limitations, such as low statistics in electron microscopy or poor spatial resolution in light microscopy. X-ray scattering techniques offer ensemble-scale statistics across length scales from the interatomic to the interparticle, within a single experiment and with high temporal resolution.
In this presentation I will discuss two cases where we used in-situ X-ray scattering experiments to monitor the structural transformations of nanocrystals. First I will discuss the activation and deactivation of oxide-derived copper electrocatalyst particles during CO2 reduction[1]. Secondly, I will show unpublished data on the nucleation and growth of CdS nanoparticles for lasing applications.
[1] J. de Ruiter, V. R. M. Benning, S. Yang, B. J. den Hartigh, H. Wang, P. T. Prins, J. M. Dorresteijn, J. C. L. Janssens, G. Manna, A. V. Petukhov, B. M. Weckhuysen, F. T. Rabouw & W. van der Stam, Nat. Commun., 2025, 16, 373.
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- Hugo R. Kruytgebouw Oost 1.28