Preparation of Sea Urchin-Like Nickel Particles under Rapid Wet Chemical Process

Abstract

Metallic nickel particles with sea urchin-like shape have been prepared by rapidly chemical reduction of aqueous nickel sulfate solution with hydrazine. The phase structure and morphology of the particles have been investigated in view of the reduction temperature as well as the addition of sodium carbonate and surfactants. BET specific surface area measurement showed that the particles obtained at 89 • C had the roughest surfaces. The probable formation mechanism of the sea urchin-like particles was also discussed.

Synthesis and characterization of novel stellate sea-urchin-like silver particles with extremely low density and superhydrophobicity

“…Unlike other methods of synthesis of sea-urchin-like particles described in the literature, [34][35][36][37][38] the specicity of preparing stellate silver particles by the method of chemical reduction is Fig. 10 The appearance of a 60-vertex stellate icosahedron, synthesized stellate Ag particle and sea-urchin (from left to right).…”

“…The preparation of sea-urchin-like particles of copper, 34 nickel, 35,36 zinc oxide doped with iron, 37 and silver 38 by different methods is described in the literature. To date, there are no publications devoted to the synthesis and properties of stellate Ag particles.…”