Interfacial Curvature, not Simply Size, Controls Spontaneous Hydrogen Peroxide Formation in Water Microdroplets

formation to varying degrees, whereas simple salts like NaCl and KCl have minimal impact, even at relatively high concentrations. These results highlight curvature and interfacial charge as key determinants of microdroplet reactivity, governed by mesoscale electrostatic fields that drive chemical transformations at and near the surface of the microdroplet.