Controllable synthesis of γ-AlOOH micro/nanoarchitectures via a one-step solution route

Abstract

Large-scale uniform γ-AlOOH micro/nanoarchitectures (ellipsoidal flower-like, rotor-like, carambola-like and leaf-like) were synthesized through a facile one-step solution phase route. The products were examined by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Influencing factors such as the volume ratio of DMF to water, the content of AlCl₃, reaction temperature and reaction time were systematically investigated. A possible formation mechanism of the novel γ-AlOOH micro/nanostructures was proposed based on the experimental results. The room-temperature photoluminescence (PL) spectra of the obtained γ-AlOOH structures were also studied and the results indicate that the luminescence properties of the products are dependent on their morphologies.