Perovskite LaFeO 3 hollow fibers with porous walls have been synthesized using cotton as biotemplates and lanthanum nitrate and ferric nitrate solution as precursors and then sintered in air at different temperatures.Effect of calcination temperatu the catalytic and photocatalytic activity of LaFeO Samples were characterized by X-ray powder diffraction (XRD), Transmission electron microscope (TEM)...