Bigdeli, T. and Moradi Dehaghi, S. 2018. Evaluating the Efficiency of a Trace Amount of Zr Dopant on Photocatalytic Activity of TiO2 in Decolorization of Azo Dye. Emerging Science Journal. 2, 3 (Jul. 2018), 157–164. DOI:https://doi.org/10.28991/esj-2018-01139.