Synthesis of Snowball Flower-like Ni Nanoparticles by Negatively Charged Micelles
Snowball-like nanoflowers of Ni have been synthesized directed by negatively-charged micelles. Positively-charged or neutral micelles can not evolve such structure. Initially, negatively-charged micelles incorporate the positively-charged Ni-ion onto its head group by electrostatic attraction and again further attraction of surfactant on the Ni +2 form a layer by layer structure and in a repetitive fashion the surfactant and positively-charged Ni salts form flower-like structure. By the reduction of Ni salts the Ni nanoflowers are formed. The sizes of nanoflowers are ca. 30 nm. The particles are superparamagnetic.