Core-shell magnetic nano-powders with an excellent decolorization effect on dye wastewater.

In recent years, zero-valent nano-iron (nZVI) has received extensive attention due to its excellent decolorization effect on dye wastewater. In this paper, zero-valent nano-iron-nickel (nZVIN) powders were prepared by a simple, efficient and non-polluting method. The powder has a unique core-shell structure and excellent oxidation resistance.