Table 2.

FT-IR spectra Peak Assign for Im(x)/PWA(y)/Si-MCM-41.

Vibration Mode Assignment	Si-MCM-41	Im1/PWA1 /Si-MCM-41	Im5/PWA3 /Si-MCM-41	Im10/PWA6 /Si-MCM-41
Si-O	459.55	459.55	459.55	459.55
Si-O-Si /W-O-W	806.21	808.14	815.85	813.93
W-O-W	-	900.72	902.65	896.86
Si-O-H	965.80	-	962.44	-
W-O	-	979.39	975.94	981.72
Si-O/P-O	1083.95	1085.88	1087.81	1082.59
C=N	-	1448.48	1448.49	1450.41
O-H deformation	~1600	~1600	~1600	~1600
Propyl group	-	2800–2950	2800–2950	2800–2950
Absorbed H2O	3400–3600	3400–3600	3400–3600	3400–3600