Extracting　uranium　from　seawater　has　become　an　important　method　to　supplement　the　nuclear　industry.　Herein,　we　introduce　a　simple　route　to　load　conjugated　microporous　polymers　onto　collagen　fiber　membranes,　resulting　in　a　novel　membrane　adsorbent　material　(CMPA-F/CFM)　for　uranium　capture.　Its　Langmuir　adsorption　capacity　reaches　304.9　mg·g−1　(at　318　K),　with　fast　adsorption　kinetic　of　60　min,　and　excellent　adsorption　selectivity　with　Kd　=　4.69　×　104　mL·g−1　under　the　temperature　of　298　K,　initial　concentration　of　50　mg·L-1,　and　pH　=　7,　thus　allowing　a　satisfactory　adsorption　performance　in　a　7-day　real　ocean　experiment　with　a　uranium　adsorption　capacity　of　1.25　mg·g−1.　Furthermore,　in　continuous　dynamic　adsorption　experiments,　CMPA-F/CFM　could　treat　up　to　19.0　L·g−1　of　low-enriched　uranium　(LEU)　solution　(1　mg·L-1),　with　a　uranium　removal　rate　of　up　to　87.5　%　(10　L　of　seawater).　This　study　demonstrates　broad　potential　application　of　membrane　adsorption　in　extraction　of　low-enriched　uranium.　©　2024　Elsevier　Ltd