. 2018 Apr 23;8(27):15087–15093. doi: 10.1039/c8ra01805g

Comparison of maximum adsorption capacity of Cr(vi) on GMFP with other adsorbents.

Absorbent	Q _m (mg g⁻¹)	Optimum pH	Ref.
Graphene oxide	65.2	2	29
GO/MnO₂/Fe₃O₄	193.1	2	5
MnO₂/Fe₃O₄/o-MWCNTs	186.9	2	30
PPy nanoclusters	180.4	5	31
PPy/Fe₃O₄	169.4	2	32
PPy/o-MWCNTs	294.1	2	33
PPy/2,5-Diaminobenzene	222.2	2	34
PPy/sepiolite nanofibers	302	2	35
GO/MnO₂/Fe₃O₄/PPy	374.5	2	This study