Fig. 4

FTIR spectra of undopedZIF-8 and Ho-doped ZIF-8 for (a) as-synthesized (As) and (b) thermal annealed (TA) nanocomposites.

FTIR spectra of undopedZIF-8 and Ho-doped ZIF-8 for (a) as-synthesized (As) and (b) thermal annealed (TA) nanocomposites.