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In this paper, we synthesize 3D and ternary composite hydrogels containing reduced graphene oxide, multi-walled carbon nanotubes and Fe3O4 nanoparticles (rGO/MCNTs/Fe3O4) via hydrothermal process. The fibrous MCNTs are involved in 3D porous network rGO structure, and the 100–200 nm Fe3O4 nanoparticles are uniformly dispersed onto the rGO and MCNTs surface. The rGO/MWCNTs/Fe3O4 composite hydrogels...
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