Effect of synthesis method on the physical and catalytic property of nanosized NiO

Nanosized NiO material was prepared by four different methods. Their physicochemical properties were investigated through SEM, BET, XRD and O2-TPD characterization. The results indicated that NiO nanoparticles synthesized by different methods have variant diameters, shape and distribution. And the particles size and surface area influence the adsorptive and catalytic property. Therein nanosized NiO prepared by sol–gel method exhibits strong adsorptive property and good low temperature catalytic behavior.