Abstract
The mesoporous MgO nanosheets were obtained using Mg(NO3)2·6H2O and urea as the raw materials without any surfactant via hydrothermal and calcination method. The effect of annealing temperature on the nanostructures and the adsorption performance were reported. The MgO annealed at 600 °C were mesoporous nanosheets with surface area of 45 m2/g. More interestingly, it exhibited high-rate adsorption property of Ni (Ⅱ) with a removal efficiency up to 99.99% in 15 min and a maximum adsorption capacity of 885 mg/g.
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