functional group

bibliographical characteristic absorption (cm⁻¹)

experimental characteristic absorption (cm⁻¹)

stretching vibration of H₂O

3400

3430

asymmetric stretch of CO₂

2350

2346

bending vibration of -OH⁻

1620

1626

stretching vibration of COO & Ti-O-C (or Ti-OH)

1385 & 1280

1391

stretching vibration of Ti-O & Ti-O-Ti

846 & 640

478

stretching vibration of Ti-O & Ti-O-Ti in rutile structure

695 & 525

671 & 521