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Fabrication and characterization of KGN-loaded TA nanofiber. (A) KGN@TA nanofiber preparation step. Representative TEM (B) and SEM (C) images of KGN particles, TA particles, TA nanofibers, and KGN@TA nanofibers (scale bar = 2 μm). (D) 2D and 3D AFM image of KGN@TA nanofibers. (E) Nano-FTIR spectroscopic mapping across a KGN@TA nanofiber and (F) absorption spectra of representative points.
