Colloid surfactant catalysts are synthesized for the production of Pickering emulsion microreactors that exhibit outstanding catalytic activity and magnetic-responsive recovery performance.

Janus particles endowed with controlled anisotropies represent promising building blocks and assembly materials because of their asymmetric functionalities. Herein, we show that using the seeded monomer swelling and polymerization technique allows us to obtain bi-compartmentalized Janus microparticles that are generated depending on the phase miscibility of the poly (alkyl acrylate) chains against the polystyrene seed, thus minimizing the interfacial free energy. When tetradecyl acrylate is used, complete compartmentalization into two distinct bulbs can be achieved, while tuning the relative dimension ratio of compartmented bulb against the whole particle. Finally, we have demonstrated that selectively patching the silica nanoparticles onto one of the bulb surfaces gives amphiphilicity to the particles that can assemble at the oil-water interface with a designated level of adhesion, thus leading to development of a highly stable Pickering emulsion system.

Janus particles endowed with controlled anisotropies represent promising building blocks and assembly materials because of their asymmetric functionalities.H erein, we show that using the seeded monomer swelling and polymerization technique allows us to obtain bi-compartmentalized Janus microparticles that are generated depending on the phase miscibility of the poly (alkyl acrylate) chains against the polystyrene seed, thus minimizing the interfacial free energy.