Analysis of Spectroscopic, Morphological Characterization and Interaction of Dye Molecules for the Surface Modification of TiB₂ Nanoparticles

Table 1

Assignment of FTIR peaks in the pure and Congo red-adsorbed PPy@TiB₂.

FTIR peaks of PPy@TiB2 (wavenumber cm^-1)	Peaks role	FTIR peaks of Congo red-adsorped PPy@TiB2 (wavenumber cm^-1)	Peaks role
1537.64	Carbon-carbon pyrrole bond stretching vibration	1521.56	Carbon-carbon pyrrole bond stretching vibration
1447.79	Conjugated C-N band for stretching	1436.68	Conjugated C-N band for stretching
1291.17	A band of conjugated deformation in the plane of C-H	1272.28	A band of conjugated deformation in the plane of C-H
1142.18	Conjugated carbon-nitrogen stretching vibrations	1136.32	Conjugated carbon-nitrogen stretching vibrations
1034.13	Nitrogen-hydrogen in the planar deformation band	1025.04	Nitrogen-hydrogen in the planar deformation band
992.25, 882.29, 780.08	Deformations of the pyrrole ring G-H in and out of the plane	988.32, 860.58, 754.42	Deformations of the pyrrole ring G-H in and out of the plane
664.89	Characteristic peak of TiB2	649.33	Characteristic peak of TiB2
478.71	Stretching mode for the titanium-boride bond	477.51	Stretching mode for the titanium-boride bond