Morphological control of anodic crystalline TiO2 nanochannel films for use in size-selective photocatalytic decomposition of organic molecules

- The crystalline TiO2 nanochannel films were formed by anodizing titanium at 20 V in glycerol electrolyte containing various amounts of K3PO4, K2HPO4 and KH2PO4 at 433 K.
- The growth rate of the films increased with an increase in the basicity of the electrolyte, leading to highly ordered nanochannel structures (the pore size was as small as ∼10 nm).
- Size-selective photocatalytic decomposition for small organic molecules was achieved by utilizing the highly ordered TiO2 nanochannel films.