Facile synthesis via a solvothermal route and characterization of Mg–Al layered double hydroxide (LDH) 3D micro–nano structures

Different Mg–Al layered double hydroxide (LDH) 3D micro–nano structures had been synthesized via a facile solvothermal method. By carefully controlling the fundamental experimental parameters, the morphologies of hexagonal nanoplates, rose-like micro–nano structures, chrysanthemum-like micro–nano structures, and spherical micro–nano structures have been efficiently obtained, respectively. And these micro–nano structures are formed from self-assembly of nanoplates in a spontaneous process in solvothermal system. It is also found that the concentration of the reactant and the dosage of CTAB have significant effects on the morphology of the products. The FT-IR spectra and thermal stability of the micro–nano structures were explored.

Mg–Al layered double hydroxide (LDH) 3D micro–nano structures were controllably synthesized via a facile solvothermal route, such as rose-like micro–nano structures, chrysanthemum-like micro–nano structures, spherical micro–nano structures, and hexagonal nanoplates.Figure optionsDownload as PowerPoint slideHighlights
► Mg–Al LDH 3D micro–nano structures were synthesized via a facile solvothermal route.
► Rose-like, chrysanthemum-like, and spherical micro–nano structures were obtained.
► The concentrations of the reactants have influence on the morphologies.
► The dosage of CTAB has effects on the morphologies.
► Mg–Al LDH 3D micro–nano structures are formed from self-assembly of nanoplates.