Utilizing oxidants to convert non-leachable tetravalent uranium (U 4+ ) into leachable hexavalent uranium (U 6+ ) is a prerequisite for the effective and economical recovery of uranium from its ore. However, conventional oxidants often face significant challenges related to economic viability, environmental sustainability, and operational practicality. To address these limitations, a novel approach utilizing oxygen nanobubbles (NBs) as an innovative oxidant is proposed to enhance the efficiency of sulfuric acid leaching for uranium extraction. This method demonstrates notable advantages in imp...