Preparation, Characterisation, and Photocatalytic Behaviour of Co-TiO₂ with Visible Light Response

Figure 6

Time required for the photodegradation of 1 mM 4-chlorophenol in aqueous suspensions of Co(x%)-TiO₂ as a function of the amount of cobalt (x%). The final calcination temperature was 400^°C for 30 minutes.