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SEM images of membrane surface of samples (a) without carbon nanotubes (CNTs) and (b) with 0.5 wt % CNTs loading, cross-section of samples with (c) 0 wt % and (d) 0.5 wt % and (e,f) CNTs dispersed among alumina and polymer (0.5 wt % CNTs/alumina/PES sample).
