Ferromagnetic hematite@graphene nanocomposites for removal of rhodamine B dye molecules from waterElectronic supplementary information (ESI) available: Experimental details and XRD, TEM, XPS, and UV-vis data and molecular structure of RhB. See DOI: 10.1039/c2ce25578b

In this communication, we report for the first time the synthesis and magnetic properties of hematite (-Fe 2 O 3 ) nanocubes anchored on polymer PVP-modified rGO nanosheet (termed HPG) nanocomposites prepared from ferric ions (Fe 3+ ). The HPG exhibited weak ferromagnetic properties with an obviousl...

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Main Authors: Liu, Junkun, Cao, Huaqiang, Xiong, Jinping, Cheng, Ziyang
Format: Article
Language:English
Online Access:Get full text
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Summary:In this communication, we report for the first time the synthesis and magnetic properties of hematite (-Fe 2 O 3 ) nanocubes anchored on polymer PVP-modified rGO nanosheet (termed HPG) nanocomposites prepared from ferric ions (Fe 3+ ). The HPG exhibited weak ferromagnetic properties with an obviously suppressed Morin temperature of 189 K, much lower than that of hematite nanocubes (257 K), which is attributed to the decrease of the particle size and the coexistence of graphene in the HPG system. Also HPG presents excellent adsorption performance for rhodamine B (RhB) dye molecules. By a facile hydrothermal technique, we synthesized a graphene-based hematite nanocomposite, which showed weak ferromagnetic behavior with an obviously suppressed Morin temperature compared with bulk hematite, as well as an excellent adsorption ability for the removal of RhB dye molecules from water.
ISSN:1466-8033
DOI:10.1039/c2ce25578b