Figure 1: Large-scale synthesis of single-layer GO Fe via K 2 FeO 4 -based methodology.
From: An iron-based green approach to 1-h production of single-layer graphene oxide
(a) Seventy-five litre GOFe aqueous solution with a concentration of 10 mg ml−1. (b) GOFe solution in H2O and N,N-dimethylformamide (DMF) with a concentration of 3 mg ml−1. (c) SEM image of GOFe on Si/SiO2 substrate. (d) The size distribution of the GOFe sheets, counted and calculated from c and Supplementary Fig. 2. (e) TEM image of GOFe and its SAED diffraction patterns (inset). (f) Tapping mode AFM image and height profile of GOFe. (g) GOFe solution of H2O and DMF with a concentration of 3 mg ml−1 after storage for 1 year. (h) Image of aqueous LCs in a quartz tube between crossed polarisers and POM image between crossed polarisers in planar cells of aqueous GOFe LCs at a concentration of 3 mg ml−1. Scale bars, 20 μm (c), 2 μm (e), 4 μm (f) and 5 mm (h, left), 1 μm (h, right).
