Preparation of graphene oxidation films by Mayer Rods

First of all, prepare 50 ml of graphene oxide aqueous solution with 10mg/ml deionized water as the mother liquor. After use a disposable dropper to absorb part of the mother liquor, and then drop it evenly on the PET or glass substrate. Next, one side of the wire rod of the Meyer rod is completely and evenly immersed in the graphene oxide solution, and then the Meyer to make the graphene oxide solution form on the surface of the PET or glass substrate. into a uniformly distributed graphene oxide film. Another coating method is to place the wire rod of the Meyer rod in front of the solution, and the other conditions are exactly the same, and finally a layer of evenly distributed graphene oxide film is formed. The film thickness can be controlled according to the selection of different wire rod models.