Fig. 3From: 2D nanochannels and huge specific surface area offer unique ways for water remediation and adsorption: assessing the strengths of hexagonal boron nitride in separation technologySEM images of the h-BNNS/PVA porous membranes depending on the curing time before crosslinking: a cross-section of single PVA, b surface of single PVA, c cross-section of BNP-24Â h, d surface of BNP-24Â h, e cross-section of BNP-3Â h, f surface of BNP-3Â h, g cross-section of BNP-1Â h and h surface of BNP-1Â h. Reproduced from Ref. [57] with permission from the Royal Society of ChemistryBack to article page