▎ 摘　　要

The nanocomposites Mg(OH)(2)/graphene (nano-MG) were controllably prepared by a facile cathodic electrodeposition. The samples were characterized by field emission scanning electron microscopy with energy dispersive spectroscopy (FSEM-EDS), X-ray diffraction (XRD), Raman spectroscopy, thermogravimetric analysis (TGA), N-2 adsorption-desorption analysis and UV-vis spectrophotometry. Characterization results suggested that Mg(OH)(2) and graphene were combined successfully. Furthermore, the effects of the current density on the specific surface area of nano-MG have been investigated systematically. The specific surface area of nano-MG varied from 110 m(2) g(-1) to 525 m(2) g(-1), indicating that a suitable current density (0.07 A cm(-2)) is favorable for the uniform growth of Mg(OH)(2) on the surface of graphene. In addition, the nano-MG (0.425 wt% graphene) with a specific surface area of 525 m(2) g(-1) was used as an adsorbent to remove Methyl Orange (MO) from water. The results showed that the adsorption of MO onto nano-MG exhibited a maximum adsorption capacity of 1.074 g g(-1). Desorption experiments were carried out to explore the feasibility of adsorbent regeneration. And the possible mechanism responsible for electrodeposition and adsorption of MO on nano-MG were also elucidated.