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. 2019 Jul 3;14:4833–4847. doi: 10.2147/IJN.S208292

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© 2019 Chiu et al.

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A scheme for the preparation of either functional carboxyl-GO modified (A) FTIR spectra, (B) Raman spectra, (C) SEM, and (D) TEM images.

Abbreviations: FTIR, Fourier transform infrared spectroscopy; SEM, scanning electron micrograph; STM, transmission electron microscopy.