Microwave-Assisted Solvothermal Synthesis of AlOOH Hierarchically Nanostructured Microspheres and Their Transformation to gamma-Al2O3 with Similar Morphologies

摘要

We report a microwave-assisted solvothermal method for the preparation of AlOOH hierarchically nanostructured microspheres constructed by nanosheets.The formation mechanism of AlOOH hierarchically nanostructured microspheres is discussed.gamma-Al2O3 hierarchically nanostructured microspheres are obtained by heating AlOOH hierarchically nanostructured microspheres to 500°C in air,and the morphology is well preserved during the thermal transformation process.The products are characterized by X-ray powder diffraction,transmission electron microscopy,and scanning electron microscopy.