doi.org
Ze Liu, Simin Guan, Se Shi — Advanced Science · ABSTRACT Rapid uranium removal from acidic wastewater is significant for nuclear pollution treatment. Robust mechanical strength is necessary for practical applications. Herein, we design a “reinforced concrete” structural aerogel (NWs/SP‐CSSB gel) with directional channels via nanowire‐assisted directional freezing. Benefiting from interconnected microchannels and hydrophilic ligands, the gel has ultrafast water permeability. Owing to the padding of ultralong nanowires (HAP NWs), the mechanical strength of the gel increased 70.43 times compared with that without NWs. Most uranium is removed within 2 min, and the removal ratio reaches equilibrium within 30 min in the highly acidic environment of pH 3. Meanwhile, it can reduce U to 9.75 ppb from the contaminated groundwater, achieving the drinking water discharge standard. Furthermore, the gel possesses good anti‐interference performance,
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