Rapid production of a bulk of porous mesh reduced graphene oxide films using a naked flame

Here, we report a simple, rapid, and non-polluting method without any additive to produce reduced graphene oxide (rGO) films using a naked flame. The rGO films present a porous mesh structure, and the C/O atomic ratio reaches similar to 10.4. The resistance is obviously decreased from about 24 M Omega to similar to 4.7 k Omega.