A New Method for Synthesis of Mg−Al, Mg−Fe, and Zn−Al Layered Double Hydroxides and Their Uptake Properties of Bromide Ion

Abstract

We report a very simple and efficient method to prepare LDHs of Mg−Al, Mg−Fe, and Zn−Al by simply mixing solid divalent metal oxide with trivalent metal chloride solution at 30 °C. Calcined Mg−Al and Mg−Fe are effective in removing low concentration of Br− from a mixed solution (Br− = 0.1 mmol/dm3, Cl− = 1.0 mmol/dm3) at a material dose of 1 g/dm3.