Table 1: The atomic compositions analyzed by energy-dispersive X-ray spectroscopy (EDS) study on the Al2O3 powders as-solvothermally synthesized according to pHs.

Samples elementspH 4pH 7pH 9pH 11
Weight%Atomic%Weight%Atomic%Weight%Atomic%Weight%Atomic%

O55.8968.1249.3762.1945.7958.7651.1563.85
Al44.1131.8850.6337.8154.2141.2448.8536.15

Total100100100100