Page 528 - Polymer-based Nanocomposites for Energy and Environmental Applications

Polypyrrole-based nanocomposite adsorbents 481

PPy
SDS Py FeCl 3 GO
Polymerization
Fe 3 O 4 Fe 3 O 4
Fig. 17.7 Schematic illustration of the preparation procedure of Fe 3 O 4 @PPy/RGO
nanocomposite.
Reproduced from Bai L, Li Z, Zhang Y, Wang T, Lu R, Zhou W, et al. Synthesis of water-
dispersible graphene-modified magnetic polypyrrole nanocomposite and its ability to
efficiently adsorb methylene blue from aqueous solution. Chem Eng J 2015;279:757–66.

Fig. 17.8 TEM images of Fe 3 O 4 (A and B), Fe 3 O 4 @PPy (C and D), and Fe 3 O 4 @PPy/RGO
(E and F).
Reproduced from Bai L, Li Z, Zhang Y, Wang T, Lu R, Zhou W, et al. Synthesis of water-
dispersible graphene-modified magnetic polypyrrole nanocomposite and its ability to
efficiently adsorb methylene blue from aqueous solution. Chem Eng J 2015;279:757–66.

nanocomposite formation was shown with increasing specific area from 30.0
2
(Fe 3 O 4 @PPy) to 162.6 m /g (Fe 3 O 4 @PPy/RGO). The adsorbent demonstrated high
cationic sorption of methylene blue with 270.3 mg/g maximum sorption capacity.
Previously, Chandra and Kim [65] prepared polypyrrole-reduced graphene oxide
nanocomposite via facile chemical approach and characterized the as-prepared