One-step cross-linking of amino-rich chitosan aerogels for efficient and selective adsorption of uranium from radioactive nuclear wastewater

A polyethyene polyamine/polydopamine modified carboxylated chitosan aerogels PEPAx/PDAy-CMCSm-n with PDA as the bonding coating prepared by one-step crosslinking achieved the high efficiency and selective recovery of uranium from radioactive nuclear wastewater. The raw materials and processes with low cost and environmental benefits make the aerogel have a wide application prospects in environmental remediation and water purification of uranium contamination.