Abstract
The oceans contain a significant amount of uranium, a valuable resource for nuclear power and fuel applications. However, current technologies for extracting uranium from seawater have limitations, including low efficiency and high energy consumption. Aerogels are promising materials for uranyl ion adsorption due to their high porosity and abundant active sites. This study presents a novel approach for efficient uranium extraction from seawater using a full-fiber-based PAO/PPy aerogel. This aerogel enables rapid diffusion of uranium and accelerated adsorption in the presence of heat generated by sun irradiation, achieving a high adsorption capacity of 69.66 mg g−1 under 1 kW m−2 in 50 mg L−1 solution. The dynamical and thermodynamic simulations indicate the presence of both chemisorption and physisorption throughout the adsorption process. Additionally, the composite aerogel is demonstrated antifouling performance and excellent selectivity of U(VI) in a mixed ionic solution. The present study offers a novel approach for the rational design of aerogel adsorbents that can effectively extract uranium from seawater in outdoor environments, without the need for additional energy input.
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