▎ 摘　　要

NOVELTY - The graphene oxide laminate membrane comprises graphene oxide (GO) flakes and pristine graphene flakes. The pristine graphene flakes are from 0.5 wt% to 10 wt% of the flakes of which the graphene oxide laminate membrane is comprised, in which the graphene oxide laminate membrane has a thickness between 1 mu m and 15 mu m. The graphene oxide laminate is supported on a porous material and comprises at least one cross-linking agent. The graphene oxide flakes of which the laminate is comprised have an average oxygen:carbon weight ratio in the range of from 0.3:1.0 to 0.4:1.0. USE - Graphene oxide laminate membrane used in filtration device (claimed). ADVANTAGE - The limitation of the d-spacing of the hydrated graphene oxide laminate size exclusion filtration membrane is achieved by the improved graphene oxide laminate membrane. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method of reducing the amount of one or more solutes in an aqueous mixture to produce a liquid depleted in the predetermined solutes; (2) a method of tuning the d-spacing of a cross-linked graphene oxide laminate size exclusion filtration membrane; and (3) a method of producing a graphene oxide laminate membrane. DESCRIPTION OF DRAWING(S) - The drawing shows a graph diagram of the x-ray diffraction peaks for selected cross-linked and non-cross-linked laminate membranes before hydration and corresponding observed d-spacings.