期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 3, 页码 1533-1540出版社
AMER CHEMICAL SOC
DOI: 10.1021/am506643b
关键词
Ni@Mg(OH)(2) nanocomposites; one-pot synthesis; magnetic separation; heavy metal wastewater; recyclability
资金
- Zhengzhou Key Laboratory for Clean Energy [111PYFZX151]
- Science and Technology Key Project from Education Department of Henan Province [13A150186]
A surfactant-assisted hydrothermal route has been presented to one-pot synthesized Ni nanoparticles encapsulated in Mg(OH)(2) hollow spheres. The diameter of Ni cores and the thickness of Mg(OH)(2) shells are about 60-80 and 15 nm, respectively, and the size of a whole composite sphere is approximately 70-100 nm. Benefiting from the ferrimagnetic behavior of Ni cores and the high surface area of Mg(OH)(2) shells, Ni@Mg(OH)(2) nanocomposites exhibit excellent heavy metals adsorption capacity and recyclable property. The first removal efficiency is almost 100% for target metals, and after five cycles, the adsorption capacity remains 95%. A series of experiments show the adsorption of heavy metal ions on Ni@Mg(OH)(2) follows a pseudo-second order kinetic equation and can be described by a Langmuir isotherm model.
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