Transient Absorption Spectroscopy of Anatase and Rutile: the Impact of Morphology and Phase on Photocatalytic Activity Chemistry March 28, 2017 Imperial College London · Save 0Andreas Kafizas discusses transient absorption spectroscopy (TAS) to investigate the kinetic dependences of photocatalysis in anatase and rutile TiO2 films of varying morphology. Image courtesy of interviewee