Three dimensional nitrogen-doped graphene aerogels functionalized with melamine for multifunctional applications in supercapacitors and adsorption

Recent Development of Advanced Materials with Special Wettability for Selective Oil/Water Separation

“…This is particularly useful for the cleanup of oil spills over large areas of water surface. Moreover, graphene aerogels/sponges were fabricated through various reduction and self‐assembly methods from graphene oxide (GO) dispersions . For example, Bi et al demonstrated the use of spongy graphene by freeze‐drying the hydrothermally prepared graphene hydrogel .…”

Black titania nanotubes/spongy graphene nanocomposites for high-performance supercapacitors

“…Note that the specic capacitance of the functionalized graphene-HTiO 2 hybrid electrode was much higher than that of the SGO and FG electrodes, which is also higher than previous reports. 35 This higher capacitance value can be ascribed to the faradaic and non-faradaic reactions arising from graphene and hydrogenated TiO 2 . 36,37 Also, the donor densities of TiO 2 nanotubes are signicantly improved by well-ordered introduction of oxygen vacancy (Ti 3+ sites) states through thermal treatment in hydrogen gas.…”

High structure stability and outstanding adsorption performance of graphene oxide aerogel supported by polyvinyl alcohol for waste water treatment

“…Consequently, the 3D structure is completely destroyed and GO layers disperse into the solvents. Moreover, Fe 3 O 4 /graphene [41], reduced GO [40], rGO/Poly(-acrylic acid) [29], Poly(vinyl alcohol)/Cellulose nanofibrils/GO [33], GO/layered double hydroxides [23] and graphene/Cellulose [42] aerogels are less stable in water, and Graphene/polystyrene/Fe 3 O 4 [43], functionalized-rGO [44] and nitrogen-doped graphene [45] aerogels are stable in organic solvents with no detailing researches about their stabilities in water carried out. Therefore, it can be concluded that, compared to the reported works, the highest stability in different solvents endows the obtained PVA-supported GO aerogel with the highest application value in the field of waste water treatment.…”

“…Moreover, when GO aerogels are immersed into the non-polar solvent (cyclohexane), only the weak interaction exists between the non-polar solvent molecules and GO layers due to the weak compatibility between GO and non-polar solvent molecules, while there is nearly no interaction between non-polar solvent molecules and PVA chains. Therefore, pure GO aerogel exhibits a slight shrinkage in the non-polar solvent due to the intrinsic amphiphilic characteristic [45,46], while all the PVA-supported GO aerogels exhibit higher stability than that in the polar solvent, such as water and ethanol. It is worth noting that the higher GO concentration can enhance the stability of the GO aerogel in both polar and non-polar solvents.…”

“…Not reported Reduced GO (rGO) 41 − Not reported rGO/poly(acrylic acid) 29 − Not reported Poly(vinyl alcohol)/cellulose Nanofibrils/GO 33 − Not reported GO/layered double hydroxides 23 + Not reported Graphene/cellulose 42 + + + Graphene/polystyrene/Fe 3 O 4 43 Not reported + Functionalized-rGO 44 Not reported ++ Nitrogen-doped graphene 45 Not reported ++ Fig. 3.…”