α ‐Fe 2 O 3 /TiO 2 Hybrids with Tunable Morphologies as Efficient Photocatalysts and Positive Electrodes for Supercapacitors

Herein, we report the fabrication of α ‐ Fe 2 O 3 /TiO 2 hybrid structures in the form of microrods, microtubes and nanorods by co‐precipitation method and via wet chemical method. The combination of α‐ Fe 2 O 3 and mixed phase (anatase and rutile) TiO 2 as hybrid structure not only enhances the light absorption ability but also facilitates charge separation resulting effective dye degradation. The detailed studies of photocatalytic dye degradation on α‐ Fe 2 O 3 /TiO 2 system were carried out to understand the mechanism. The α‐ Fe 2 O 3 /TiO 2 hybrid nanorods exhibited the best performances as photocatalyst as well as supercapacitor electrode with excellent stability in both cases. The α‐ Fe 2 O 3 /TiO 2 hybrid nanorods exhibited efficient 88% dye degradation after 120 min as photocatalyst and a specific capacitance value of 478.40 F g −1 was achieved at current density of 1 A g −1 with a capacity retention value of 92% at 2 A g −1 after 1000 cycles. It is anticipated that the anisotropic structure as well as the synergistic effect of α‐ Fe 2 O 3 and TiO 2 make the hybrid material a promising photocatalyst as well as potential electrode for supercapacitor.