Poly(ionic liquid)-Modified Magnetic Janus Particles for Dye Degradation

The Fe₃O₄@SiO₂ paramagnetic Janus particles with phenyl groups and amino groups segmented on two different sides were fabricated by the Pickering emulsion method. Then, the poly­(ionic liquid)­s were selectively modified onto the amino side via in situ induced ATRP polymerization. Different anions were introduced onto the poly­(ionic liquid)­s region by exchanging anions to adjust the wettability of the side. Meanwhile, after the PW₁₂O₄₀^3– anions were employed, the poly­(ionic liquid)-modified Fe₃O₄@SiO₂ Janus particles can be used as a catalytic solid emulsifier and degraded water-soluble dyes with the aid of stabilizing emulsion.