Abstract

Gallium oxide has extensively been applied to various areas of optoelectronic devices, catalysts and displays. Herein, bare and Eu(III)-doped GaOOH, α- and β-gallium oxide (Ga2O3) nanorods were synthesized by the hydrothermal method and post-thermal treatment process. The physicochemical properties were fully examined by scanning electron microscopy, X-ray diffraction crystallography, Fourier-transform infrared spectroscopy, and UV–visible absorption. For diverse applications, we first performed CO oxidation tests, 2D/3D photoluminescence image spectroscopy, and electrochemical hydrogen evolution reaction. The unique results provide valuable information for the development of Ga oxide-based materials.

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