Fig. 3: Attachment capability of Co@SCN at the aqueous interface.
From: Harnessing air-water interface to generate interfacial ROS for ultrafast environmental remediation
a Formation of the oil-in-water (O/W) Pickering emulsion upon shaking a mixed solution (inset) containing 0.1 wt% Co@SCN, toluene, and water; b Schematic illustration of Co@SCN attachment to the microbubble surface and the representation of involving forces at the microbubble surface, here, Rp is the radius of Co@SCN, Rb is the radius of microbubble, Fp is the capillary pressure outside the gas bubble, Fb is the buoyancy force, Fg is the gravitational force, Fc is the surface tension force of the liquid and θ is the contact angle; c Relationship of particle sizes and contact angles toward the acting forces of Co@SCN attachment at bubble surface; d Schematic illustration of a microbubble directly visualized by reflected-light digital video microscopy; e, f Microscopy images of a microbubble and the interconnected Co@SCN film at the microbubble surface, respectively; Scale bars: a 400 μm, e 100 μm, f 10 μm.
