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Modification of semiconductor oxides leads to a major development in functional characteristics. Characterisation of Pr 6 O 11 -TiO 2 , fabricated by a cost-effective hydrothermal – decomposition method reveals the nanorod like structure of this catalyst. The XRD pattern definite the formation of face-centred cubic or cubic close-packed structure of Pr 6 O 11  and the high crystallinity indicate the existence of anatase TiO 2 . XPS analysis indicates the presence of both Pr 3+ and Pr 4+  ions in Pr 6 O 11.  Pr 6 O 11 -TiO 2  is more photoactive under visible light than Pr 6 O 11 , prepared TiO 2  and TiO 2 -P25 (80% Anatase and 20% Rutile mixture) in the degradation of toxic azo dyes. Pr 6 O 11 -TiO 2  is stable and recyclable consecutively. Pr 6 O 11 -TiO 2  catalyst shows higher electrocatalytic activity in methanol oxidation than pure TiO 2 . These results reveal new insights on the efficiency of catalysts in photo- and electrocatalytic applications.

Photo-electrocatalytic activity of praseodymium oxide modified titania nanorods