Photocatalytic performance of tb, n co-doped titania nanocomposites

In this study, the photocatalytic performance of Tb, N co-doped titania nanocomposites was evaluated by degradation of methylene blue. The effects of calcination temperature and N doping amount on the catalytic activity were analyzed. In addition, the photocatalytic reaction kinetics of the nanocomposites was also discussed. The results showed that Tb-N-TiO2 exhibites the highest photocatalytic performance when the calcination temperature is 600 °C and the optimal doping amount of N is 6 %. Tb-N-TiO2, N-TiO2 and Tb-TiO2were fitted to the pseudo-first-order reaction kinetics, and the reaction rate constants were 0.03768 h-1, 0.56742 h-1 and 0.06289 h-1, respectively.