This study is focused on synthesis of nickel based catalyst and exploration of its catalytic efficiency for oxidative degradation of phenol, methyl orange, methylene blue and direct black dyes in aqueous medium. Sodium hypochlorite, sodium hydroxide and nickel sulfatehexahydrate in distilled water were used as starting material for preparation of nickel catalyst. Pyrex glass batch reactor was used to study the catalytic experiments on 313, 323 and 333 K temperature. Experimental data was subjected to kinetics analysis using Curve Expert software. Degradation reaction was taking place according to Langmuir-Hinshelwood mechanism. Apparent activation energy for catalytic degradation of each dye was determined.