Fig. 2From: A Facile Method for Loading CeO2 Nanoparticles on Anodic TiO2 Nanotube ArraysSynthesis flow of CeO2/TiO2 heterojunction: (a) preparation of empty TiO2 NTs, (b) loading the TiO2 NTs with Ce(NO3)3 solution, and (c) formation of CeO2/TiO2 heterojunction structuresBack to article page