Hierarchical triple-channel architectures unlock scalable and high-efficient uranium extraction from seawater

/s), working together to maximize uranium capture and functional group accessibility. As a result, HTC-PAO achieves a uranium adsorption capacity of 14.69 mg/g over 35 days under conditions without external energy input, while also showing high ion selectivity, reusability, and cost efficiency. These findings demonstrate that the hierarchical triple-channel architecture enables highly efficient and scalable uranium extraction from seawater.