Figure 5From: Anatase TiO2 nanotube powder film with high crystallinity for enhanced photocatalytic performance Photocatalytic performance and rate constant. (a) Time-dependent MB concentration showing the photocatalytic decomposition kinetic behavior of the NT powders obtained at various annealing temperatures of 450°C, 550°C, 650°C, and 750°C. (b) The photocatalytic rate constant.Back to article page