{"id":789,"date":"2025-11-20T15:18:39","date_gmt":"2025-11-20T07:18:39","guid":{"rendered":"https:\/\/frontbasic.sslab.org.cn\/ceramics\/?post_type=paper&#038;p=789"},"modified":"2025-11-20T15:18:39","modified_gmt":"2025-11-20T07:18:39","slug":"stabilizing-graphene-oxide-membranes-via-fe3-coordination-induced-amorphization-for-efficient-separation-of-rare-earth-elements","status":"publish","type":"paper","link":"https:\/\/frontbasic.sslab.org.cn\/ceramics\/paper\/stabilizing-graphene-oxide-membranes-via-fe3-coordination-induced-amorphization-for-efficient-separation-of-rare-earth-elements\/","title":{"rendered":"Stabilizing graphene oxide membranes via Fe3+\u00a0coordination-induced amorphization for efficient separation of rare earth elements"},"content":{"rendered":"\n<p><strong>Author<\/strong>:Zhaoxiang\u00a0Li\u00a0<sup>ab1<\/sup>,\u00a0Li\u00a0Tian\u00a0<sup>b1<\/sup>,\u00a0Depeng\u00a0Ji\u00a0<sup>c<\/sup>,\u00a0Enze\u00a0Tian\u00a0<sup>b<\/sup>,\u00a0Enge\u00a0Wang\u00a0<sup>ab<\/sup>,\u00a0Kehai\u00a0Liu\u00a0<sup>d<\/sup>,\u00a0Guorui\u00a0Zhao\u00a0<sup>b<\/sup><\/p>\n\n\n\n<p><strong>Jurnal:<\/strong>Chemical Engineering Journal<\/p>\n\n\n\n<p><strong>DOI:<\/strong><a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1016\/j.cej.2025.169929\" target=\"_blank\">https:\/\/doi.org\/10.1016\/j.cej.2025.169929<\/a><\/p>\n\n\n\n<p><strong>Abstract \/\u00a0\u6458\u8981<\/strong><\/p>\n\n\n\n<p>Graphene oxide (GO) membranes, distinguished by their precisely tunable interlayer nanochannels and abundant oxygenated functional groups, exhibit remarkable potential for trivalent rare earth element ions (REE<sup>3+<\/sup>) sieving. However, their practical deployment in REE<sup>3+<\/sup>\u00a0recovery is hindered by inherent instability. Here, we engineer ultra-stable GO-based nanofiltration membranes through a facile Fe<sup>3+<\/sup>\u00a0crosslinking strategy. Microstructural and spectroscopic analyses reveal that Fe<sup>3+<\/sup>\u00a0crosslinking induces a predominantly amorphous architecture, rather than ordered crystalline domains. This architecture synergistically locks interlayer spacing at 0.73\u00a0nm (optimal for hydrated REE<sup>3+<\/sup>\u00a0sieving), while maintaining anti-swelling stability through covalent Fe-O dominated bonds. Consequently, the optimized membrane achieves a 4.75-fold increase in Y<sup>3+<\/sup>\u00a0rejection (from 20\u00a0% to 95\u00a0%) compared to the pristine GO membrane, with exceptional anti-swelling stability under harsh conditions (90\u00a0\u00b0C, pH\u00a02\u201312, 8\u00a0bar). Crucially, even after 120\u00a0days of continuous high-pressure operation, the rejection efficiency is sustained above 95\u00a0% with no discernible swelling. This work not only resolves the long-standing stability-selectivity trade-off in GO membranes but also establishes a \u2018coordination lock\u2019 paradigm for designing advanced membrane materials for critical resource recovery.<\/p>\n\n\n\n<p><strong>Keyword \/\u00a0\u5173\u952e\u8bcd<\/strong><\/p>\n\n\n\n<p>Graphene oxide membrane; Nanofiltration; Crosslinking structure; Rare earth elements<\/p>\n\n\n<div class=\"wp-block-image is-style-default\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"598\" height=\"489\" src=\"https:\/\/frontbasic.sslab.org.cn\/ceramics\/wp-content\/uploads\/sites\/20\/2025\/11\/1-s2.0-S1385894725107729-gr4.jpg\" alt=\"\" class=\"wp-image-790\" srcset=\"https:\/\/frontbasic.sslab.org.cn\/ceramics\/wp-content\/uploads\/sites\/20\/2025\/11\/1-s2.0-S1385894725107729-gr4.jpg 598w, https:\/\/frontbasic.sslab.org.cn\/ceramics\/wp-content\/uploads\/sites\/20\/2025\/11\/1-s2.0-S1385894725107729-gr4-300x245.jpg 300w\" sizes=\"(max-width: 598px) 100vw, 598px\" \/><\/figure><\/div>","protected":false},"featured_media":790,"template":"","acf":[],"_links":{"self":[{"href":"https:\/\/frontbasic.sslab.org.cn\/ceramics\/wp-json\/wp\/v2\/paper\/789"}],"collection":[{"href":"https:\/\/frontbasic.sslab.org.cn\/ceramics\/wp-json\/wp\/v2\/paper"}],"about":[{"href":"https:\/\/frontbasic.sslab.org.cn\/ceramics\/wp-json\/wp\/v2\/types\/paper"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/frontbasic.sslab.org.cn\/ceramics\/wp-json\/wp\/v2\/media\/790"}],"wp:attachment":[{"href":"https:\/\/frontbasic.sslab.org.cn\/ceramics\/wp-json\/wp\/v2\/media?parent=789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}