Skip to main content
. Author manuscript; available in PMC: 2015 May 29.
Published in final edited form as: J Mater Chem B. 2015 Feb 17;3(12):2455–2462. doi: 10.1039/C4TB01944J

Figure 5.

Figure 5

FTIR spectra of O-H stretching vibrations of synthetic HAP crystals (A), BS (B), and BS/HAP (C). The O-H peak is shifted to a smaller wavenumber and becomes broader as a result of the hydrogen bonding between HAP and BS as predicted in Figure 1C.