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SEM pictures of cross-section (1 and 2) and outer surface (3 and 4) of Pebax® 2533-UiO-66-NH2/PP thin film mixed matrix hollow fiber membranes—(A) PP hollow fiber support, (B) 0 wt% UiO-66-NH2, (C) 5 wt% UiO-66-NH2, (D) 10 wt% UiO-66-NH2, (E) 15 wt% UiO-66-NH2, (F) 20 wt% UiO-66-NH2, and (G) 50 wt% UiO-66-NH2.
