In the Raman spectrum of TiO2 each peaks Eg, B1g, A1G related to what the interaction between photon and phonon? can introduce a book or paper to explain?
I am attaching few articles which have explained Raman spectroscopy of TiO2
Hope the attached article helps you.
Article Synthesis and characterization of solar photoactive TiO2 nan...
I hope this will help you:
http://pubs.rsc.org/-/content/articlelanding/2017/tc/c7tc00233e/unauth#!divAbstract
Dear researchers Thank you for your attention. The articles helped me.
Raman spectra of annealed compact organised TiO2 nanotubes recorded in the spectral region 100–700 cm−1. The range 246–351 cm−1 corresponds to O–O covalent interactions however, the active
modes at 144 and 197 cm−1 corresponds to Ti–Ti interaction in the unit cell. Based on space group symmetry D4h19 for anatase and assumed positions D2d for Ti and C2v for O atoms within the basic unit distorted octahedra, group theoretical analysis shows raman active bands at 144, 197, 392, 515 and 633 cm−1 which corresponds to Eg(1), Eg(2),
B1g, A1g and Eg(3) modes of anatase phase, respectively. Eg bands arise mainly due to symmetric stretching vibration of O–Ti–O, B1g band is due to symmetric bending vibration of O–Ti–O and A1g mode is due to antisymmetric bending vibration of Ti–O–Ti in TiO2. However, the strongest well resolved mode at 144 cm−1 arised due to external symmetric vibration confirms the formation of long range order anatase phase.
For further information go through my article .
Muzaffar Ahmad Boda, and Mohammad Ashraf Shah. "Fabrication mechanism of compact TiO2 nanotubes and their photo-electrochemical ability." Materials Research Express 4.7 (2017): 075908.
@Maryam Helmet. You are most welcome. Happy to know that the explanation I provided you fulfilled your need.
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