Figure 7.

Schematic showing steps to create active Janus colloids through solution synthesis. a) Silica colloids are refluxed in toluene with APS to aminate the surface. b) The aminated silica colloids are hydrophobized with SDS and emulsified with the melted wax to form the Pickering emulsion. c) The trapped aminated silica is seeded with platinum nanoparticles. d) The seeded particles are grown using platinic acid and formaldehyde. e) The colloids with grown platinum are released using DCM to dissolve the wax.