NiO nanoparticles were prepared by a homogeneous precipitation method involving an aqueous solution of nickel nitrate hexahydrate and urea. The effects of various technical parameters on the synthesis yield of nanometer NiO products were investigated and the optimum processing conditions were found through orthogonal experiments. The significant influencing factors on yield of nanometer NiO were in the lessened sequence of the reaction temperature, the molar ratio of reactants and reaction time. The optimum conditions found for preparing NiO na...
