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. 2019 Feb 6;9(2):216. doi: 10.3390/nano9020216

Figure 1.

Figure 1

FTIR spectra of all samples in the region of (a) 400 cm−1 to 2400 cm−1, and (b) 2400 cm−1 to 4000 cm−1. Clear shifting, broadening and change in intensity in the FTIR bands can be observed.