Resumen: Metal-organic framework (MOF) activation is crucial for the use of MOFs in several applications and solvent-exchange process is a necessary step in many activation methods. In this contribution, we have explored in situ MOF monolayer film formation at the air-water interface. Nanoparticles (NPs) of the Al trimesate MIL-96(Al) retain chloroform into their micropores, which considerably diminishes the CO2 adsorption capacity of MOF films. However, a solvent-exchange process between chloroform and water increases CO2 film adsorption capacity by 30%. Total Reflection X-Ray Fluorescence (TRXF) allows studying the kinetics of this process at the air-water interface, that strongly depends on the NP size. The conclusions derived from in situ studies allow optimizing the ex situ activation procedure of MIL-96(Al) films deposited onto quartz crystal microbalance (QCM) substrates in order to maximize CO2 and methanol adsorption. Idioma: Inglés DOI: 10.1016/j.jcis.2021.01.030 Año: 2021 Publicado en: Journal of Colloid and Interface Science 590 (2021), 72-81 ISSN: 0021-9797 Factor impacto JCR: 9.965 (2021) Categ. JCR: CHEMISTRY, PHYSICAL rank: 33 / 165 = 0.2 (2021) - Q1 - T1 Factor impacto CITESCORE: 14.5 - Chemical Engineering (Q1) - Materials Science (Q1)