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Fig. 5 | Nanoscale Research Letters

Fig. 5

From: Effect of Enhanced Thermal Stability of Alumina Support Layer on Growth of Vertically Aligned Single-Walled Carbon Nanotubes and Their Application in Nanofiltration Membranes

Fig. 5

Cross-sectional SEM images of CNT-SiNx membranes. a Low- and b high-magnification images of a CNT membrane before opening the CNT pores with etching steps and, thus, before ion rejection studies. c Low- and d high-magnification images of the top surface of a CNT membrane after etching and after ion filtration studies. In all images, a dense SiNx layer on the membrane surface and the vertical alignments of the CNTs in the composite are clearly visible. After etching, CNT bundles emerge from the membrane top surface

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