Effect of phase composition, morphology, and specific surface area on the photocatalytic activity of TiO2 nanomaterials

摘要: The synergistic effect between anatase and rutile TiO2 particles for photocatalysis has been widely reported. Besides the phase composition, both morphology specific surface area play important roles in affecting photocatalytic activity of TiO2-based materials. However, comprehensive study effects these properties is missing so far. Using a facile soft-chemical strategy, we synthesize series samples with desired morphology, area, but otherwise identical properties. correlation to photoreactivity investigated by degrading three typical dye molecules. composite anatase-to-rutile ratio as 7:3 displays optimal results. Meanwhile, find an interlaced influence area. superior achieved 0D/1D heterogenous even though it possesses much lower than pure 0D particles. We proposed that improvement due combined higher surface-to-volume carrier recombination rate 1D nanorods. In this way, materials could reach maximal performance if designing structure appropriate composition high