Preparation of polyacrylamide/silica composite capsules by inverse Pickering emulsion polymerization

- PAM/SiO2 composite microcapsules were prepared by inverse Pickering emulsion polymerization.
- Synthesized capsules consisted of a SiO2 nanoparticle shell and a polymer inner layer.
- Size and rigidity of the capsules depended on concentrations of SiO2 and AM during preparation.
- Composite capsules exhibited high adsorption capacity and rate to Hg(II) ions.