combination of two synthesis methods: hydrothermal treatment and mechanical milling
(MM). The samples were analyzed by X-ray diffraction (XRD), Scanning Electron Microscopy
(SEM), Transmission Electron Microscopy and High-Resolution Transmission Electron
Microscopy (TEM/HRTEM), Diffuse-reflectance spectroscopy (DRS), infrared spectroscopy
(IR), Differential Thermal analysis (DTA-TG) and Brunauer–Emmett–Teller (BET) method …