Figure 2

FTIR spectra of the samples: (a) MWCNT-COOH, (b) MWCNT-COCl, (c) MWCNT-NH2, and (d) MWCNT-LVX. Abbreviations: MWCNT: Multi-walled carbon nanotube; LVX: Levofloxacin; MWCNT-COOH: Carboxylic acid-functionalized MWCNTs; MWCNT-COCl: Acyl chloride-functionalized MWCNT; MWCNT-NH2: Amine-functionalized MWCNTs; MWCNT-LVX: Levofloxacin-loaded functionalized MWCNTs.