In this project the genesis of nanobubbles at the surface of thin-film zeolites and MOFs will be studied. This will be done using scanning probe microscopy techniques, such as liquid-phase AFM and Kelvin probe microscopy. Formation of nanobubbles will be induced on thin-film zeolites through solvent exchange and temperature variations. MOFs will be employed in electrocatalysis to induce formation of gas bubbles. The aim is to correlate surface heterogeneities with nanobubble formation.