Also we have synthesized polypyrrole/Fe 3O4 (PPy/Fe3O4) nanocomposite for
the removal of Cr(VI)and noticed that under the same experimental conditions (initial concentration –100 mg/L,pH–2.0,mass –2g/L) PPy/Fe3O4 has a higher adsorption capacity (100mg/g)for Cr(VI) than PPy (73.5 mg/g)and Fe3O4 (40.5 mg/g)counterparts as well
as most of the nanoadsorbents [19].