Janus hollow spheres by emulsion interfacial self-assembled sol–gel process

Abstract

Janus hollow silica spheres with an asymmetric shell are synthesized by self-assembled sol-gel process at an emulsion interface, and desired materials can be preferentially laden inside the cavities from their surroundings.

Inorganic Micelles (Hydrophilic Core@Amphiprotic Shell) for Multiple Applications

“…[ 10,11 ] Due to the narrow range of stability of organic micelles, the synthesis of inorganic micelles that have hydrophilic/hydrophobic interfaces, large surface areas, high porosities, tunable surfaces, and high recyclability has recently attracted some attention. [ 12,13 ] For example, Lin and co-workers reported a simple route to hierarchically assembling micelles and inorganic nanoparticles. [ 14 ] Yang and co-workers prepared functionalized mesoporous silica spheres consisting of a hydrophobic core and a hydrophilic micellar shell.…”

Lotus leaf inspired robust superhydrophobic coating from strawberry-like Janus particles

“…In the absence of Tween-80, a smooth shell forms (Supplementary Figure S4). 16 When increasing the Tween-80 content (from 0.5 to 0.8 g), the interstitial voids between the particles become larger, whereas their connection becomes weaker (Figure 1c). The exterior side of the particles becomes coarser.…”

“…16,17 An oil-in-water emulsion forms in the presence of binary surfactants of hydrolyzed styrene-maleic anhydride copolymer and polyoxyethylenesorbitan monooleate (Tween-80; for example, at 0.3 g). Tween-80 is added to induce a phase separation to create patchy domains at the emulsion interface (Supplementary Figure S1).…”

Design, Synthesis, and Application of Anisotropic Janus Particles

“…In 2011, we reported a facile method of largescale preparation of inorganic Janus hollow spheres with hydrophilic outside surface and hydrophobic inside surface by a self-assembled solgel process [10]. As shown in Fig.…”