Figure 6: Macroscopic assembled materials of re-dissolved GOFe.
From: An iron-based green approach to 1-h production of single-layer graphene oxide

(a–c) A wet-spun 14-m long continuous fibre with diameter 10 μm and its SEM images at the cross-section of fibre. (d–f) A film made by the filtration method and its SEM image of a section. (g–i) Ultralight weight GOFe aerogel with a density of 2 mg cm−3 and its SEM images showing CNT-coated graphene morphology. Scale bars, 3 cm (a), 1 μm (b), 500 nm (c), 1 cm (d), 3 μm (e), 400 nm (f), 2 cm (g), 30 μm (h) and 2 μm (i).