Figure 12.

(a) Scheme of the nanofiltration assembly and selective molecular separation of NA from a mixture of NA and RB, (“F” denotes feed and “P” for permeate); (b) SEM cross-section showing stacked layer sheets in M-TpBD; (c) Scheme for molecular sieving mechanism through M-TpBD; (d) UV–vis spectra of selective recovery of NA from mixture of RB and NA from water; (e) UV–vis spectra of vitamin-B12 (V-B12) and the filtrate water after passing through M-TpBD. Reprinted with permission from [33]. Copyright (2016) John Wiley and Sons publications.