Fig. 8From: Hydrothermal derived nitrogen doped SrTiO3 for efficient visible light driven photocatalytic reduction of chromium(VI)Cycling performance of N-SrTiO3(2) toward Cr(VI) reduction (a), XRD patterns of N-SrTiO3(2) after 5 cycles recycle test toward Cr(VI) reduction (b), UV–visible diffuse reflection spectra of of N-SrTiO3(2) after 5 cycles recycle test toward Cr(VI) reduction (c)Back to article page