%0 Journal Article
%T Growth and Photocatalytic Properties of Gallium Oxide Films Using Chemical Bath Deposition
%J Crystals | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/cryst9110564
%X Gallium oxide (Ga 2O 3) thin films were fabricated on glass substrates using a combination of chemical bath deposition and post-annealing process. From the field-emission scanning electron microscopy and x-ray diffraction results, the GaOOH nanorods precursors with better crystallinity can be achieved under higher concentrations (¡Ý0.05 M) of gallium nitrate (Ga(NO 3) 3). It was found that the GaOOH synthesized from lower Ga(NO 3) 3 concentration did not transform into ¦Á-Ga 2O 3 among the annealing temperatures used (400¨C600 ¡ãC). Under higher Ga(NO 3) 3 concentrations (¡Ý0.05 M) with higher annealing temperatures (¡Ý500 ¡ãC), the GaOOH can be transformed into the Ga 2O 3 film successfully. An ¦Á-Ga 2O 3 sample synthesized in a mixed solution of 0.075 M Ga(NO 3) 3 and 0.5 M hexamethylenetetramine exhibited optimum crystallinity after annealing at 500 ¡ãC, where the ¦Á-Ga 2O 3 nanostructure film showed the highest aspect ratio of 5.23. As a result, the photodegeneration efficiencies of the ¦Á-Ga 2O 3 film for the methylene blue aqueous solution can reach 90%. View Full-Tex
%U https://www.mdpi.com/2073-4352/9/11/564