New Publication within IRP CETIMPAI Project

A new publication from the CNRS IRP CETIMPAI (Combined experimental and theoretical investigation of molecular processes at atmospheric interfaces) has just been released in the special issue of The Journal of Physical Chemistry A – Festschrift dedicated to Vicki H. Grassian (A Panoply of Physical and Environmental Chemistry, August 2025).

Authored by the PCMT team, in collaboration with Markus Ammann (Paul Scherrer Institute, Villigen), this study combines XPS spectroscopy and Molecular Dynamics simulations carried out as part of Rawan AbouHaidar’s PhD work.

Conducted by the Céline Toubin from the PCMT team and Markus Ammann (Paul Scherrer Institute, Villigen), the study combines XPS spectroscopy with Molecular Dynamics simulations carried out as part of the doctoral research of Rawan AbouHaidar.

The results reveal a pronounced tendency of bromide ions to accumulate at the surface in the presence of surfactants. This work underscores the critical role of electrostatic interactions in governing the abundance of interfacial species. A deeper understanding of surface selectivity is key, as it shapes the multiphase bromine cycle and directly impacts the atmospheric ozone budget.

Reference:

Influence of Surfactants with Differently Charged Headgroups on the Surface Propensity of Bromide

Shuzhen Chen, Rawan Abouhaidar, Luca Artiglia, Huanyu Yang, Anthony Boucly, Lucia Iezzi, Jérôme Philippe Gabathuler, Thorsten Bartels-Rausch, Céline Toubin, and Markus Ammann

The Journal of Physical Chemistry A 2025 129 (13), 3085-3097

https://doi.org/10.1021/acs.jpca.4c0753