Flake-like InVO(4) modified TiO(2) nanofibers with longer carrier lifetimes for visible-light photocatalysts

Highly efficient solar light absorption capabilities and quantum yields in photocatalysts are key to their application in photocatalytic fields. Towards this end, TiO(2)/InVO(4) nanofibers (NFs) have been designed and fabricated successfully by a one-pot electrospinning process. The resulting TiO(2)/InVO(4) NFs display excellent visible-light photocatalytic activity, owing to their prominent visible-light absorption and electron–hole separation properties. Time-resolved transient PL spectroscopy demonstrated that the TiO(2)/InVO(4) NFs display longer emission decay times (22.0 ns) compared with TiO(2) NFs (15.5 ns), implying that the heterojunction can remarkably suppress the electron–hole recombination and promote the carrier transfer efficiency. With tailored heterostructure features, TiO(2)/InVO(4) NFs exhibit superior visible-light photodegradation activity, and after 80 min of visible-light irradiation, almost 95% of RhB molecules can be decomposed by TiO(2)/InVO(4) NFs, while only 18% of RhB molecules can be decomposed by pure TiO(2) NFs.