纳米晶Mg-Al水滑石的水热合成及微结构表征

Nano Mg-Al LDHs were prepared from precursors of MgO and Al(OH)₃ using a hydrothermal method in one step and the microstructural features were characterized by powder XRD and SEM. Crystallite sizes were determined by X-ray whole powder pattern fitting method. Effects of synthesis temperatures and alkalinity on phases formation、crystallinity and crystallite sizes of Mg-Al LDHs were investigated. Crystallite form evolved from thin plates to thick plates as the hydrothermal synthesis temperature increases. Layers of interlayer containing OH^- and CO₃^2- were distributed orderly or disorderly depending on the the starting alkalinity of the precursors along the c axis resulting in an interstratified Mg-Al LDHs structure.

Nano Mg-Al LDHs: Hydrothermal Synthesis and Microstructural Characterization

Nano Mg-Al LDHs were prepared from precursors of MgO and Al(OH)3 using a hydrothermal method in one step and the microstructural features were characterized by powder XRD and SEM. Crystallite sizes were determined by X-ray whole powder pattern fitting method. Effects of synthesis temperatures and alkalinity on phases formation?crystallinity and crystallite sizes of Mg-Al LDHs were investigated. Crystallite form evolved from thin plates to thick plates as the hydrothermal synthesis temperature increases. Layers of interlayer containing OH-and CO32-were distributed orderly or disorderly depending on the the starting alkalinity of the precursors along the c axis resulting in an interstratified Mg-Al LDHs structure.