Li etal. [38], thebroadvibrationpeakat280cm1 resulted from
‘Ti–O’ vibratingmodesinthetitaniaframeworkwhileKasuga
et al. [35] reportedduetoNa–O–Ti. Asshownin Fig. 7, the
annealedTiO2 nanowiresat500 1C asafunctionofgrowthtime
showed similarvibrationmodesat143,398,518and637cm1
whichcanbeassignedtoananatasephase.