Fig. 1: Preparation, morphology and structure of boron nitride and graphene nanosheet (BNG) heterostructured membrane.
From: Pyro-layered heterostructured nanosheet membrane for hydrogen separation
a Schematic illustration depicting the pyro-layering approach and gas molecule transport through the BNG membrane. b, c Digital images of the prepared FBN-chitosan precursor membrane and BNG membrane before and after high-temperature pyro-layering. d, e Digital images of a free-standing BNG membrane bent by tweezers and placed on the bench. f SEM surface-view image of the BNG membrane. g SEM cross-sectional image of the BNG membrane. h TEM image of a cross-section of the BNG membrane. The inset represents the selected area electron diffraction (SAED) patterns of the BNG membrane. All precursor and BNG membranes with 53.2% BN shown in Fig. 1 were prepared with an FBN-chitosan precursor solution with the same ratio (FBN: chitosan = 7:10).
