Synthesis and Characterization of a New Surface-Modified Nanoparticle Using Fluoroalkanoic Acids as a Wettability Alteration Agent

Table 4

FTIR spectra of PFOA-modified nanoparticles and PFNA-modified nanoparticles.

Functional group	Peak position for PFOA-modified nanoparticles (cm^-1)	Peak position for PFNA-modified nanoparticles (cm^-1)	Type of vibration
C=O	1678	1768	C=O stretching vibration
C-F	1205, 1148	1303, 1149	C-F stretching vibration
Si-O-C	1106	1106	Si-O-C stretching vibration
Si-O-Si	793	792	Si-O-Si symmetric vibration
Si-O-Si	472	471	Si-O-Si bending vibration