%V 15 %I MDPI %A A.A. Bin Mokaizh %A J.H. Shariffuddin %A A.O. Baarimah %A A. Al-Fakih %A A. Mohamed %A S.O. Baarimah %A A.-B.A. Al-Mekhlafi %A H. Alenezi %A O.A. Olalere %A A.A.H. Saeed %T Elucidating the Effects of Reaction Time on the Physicochemical Characterization of Valorized Synthesized Alumina %X Aluminum waste-can management in Malaysia has recently become a serious environmental and public health issue, particularly in metropolitan areas. This has prompted the need to valorize these waste-cans into value-added products using the most economical and environmentally friendly techniques. In this study, the sol�gel technique was used to synthesize high-quality alumina from the aluminum waste-cans collected. From this method, the observed peaks of the synthesized alumina were identified as diaspore (α-AlO(OH)), boehmite (γ-AlO(OH)), aluminum oxide, or gamma-alumina (γ-Al2O3 ) crystalline structure and corundum. The morphological configuration, microstructure, and functional group properties of the synthesized alumina were evaluated. All the synthesized alumina exhibited a non-spherical shape and appeared to have hexagonal-like shape particles. Moreover, the XRD patterns of the synthesized alumina AL-6-30 and AL-12-30 exhibited a small angle (1�10� ) with no XRD peak, which indicated a mesoporous pore structure with no long-range order. The overall results of γ-alumina synthesized from the aluminum waste-cans showed an optimal condition in producing a highly structured γ-alumina with excellent surface-area characteristics. The synthesized alumina exhibited stronger and highly crystalline functional characteristics almost comparable with the commercially available brands on the market. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. %K Corundum; Pore structure; Sols; Waste management; X ray diffraction, Aluminum waste; Aluminum waste can; Characterization; Malaysia; Metropolitan area; Physico-chemical characterization; Public health issues; Sol - Gel synthesis; Synthesised; Value added products, Aluminum oxide %N 9 %R 10.3390/ma15093046 %D 2022 %J Materials %L scholars16783 %O cited By 1