Article(id=1311351094031250084, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311351083973305284, articleNumber=null, orderNo=null, doi=10.13426/j.cnki.yky.2025.06.01, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1749139200000, receivedDateStr=2025-06-06, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1790580064541, onlineDateStr=2026-09-28, pubDate=1763568000000, pubDateStr=2025-11-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790580064541, onlineIssueDateStr=2026-09-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790580064541, creator=13701087609, updateTime=1790580064541, updator=13701087609, issue=Issue{id=1311351083973305284, tenantId=1146029695717560320, journalId=1146123346816638986, year='2025', volume='44', issue='4', pageStart='1', pageEnd='158', issueExtLink='null', onlineDate='null', pubDate='1763568000000', pubDateStr='2025-11-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1790580062144, creator='13701087609', updateTime=1790583973598, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1311367489863381299, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311351083973305284, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1311367489863381300, tenantId=1146029695717560320, journalId=1146123346816638986, issueId=1311351083973305284, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1, endPage=14, ext={EN=ArticleExt(id=1311351094228382374, articleId=1311351094031250084, tenantId=1146029695717560320, journalId=1146123346816638986, language=EN, title=Performance and Mechanism of Uranium Adsorption from Seawater by Silver-Loaded Amidoxime-Functionalized Cycas Leaves Fibers, columnId=1179340519550370065, journalTitle=Uranium Mining and Metallurgy, columnName=COVER ARTICLE, runingTitle=null, highlight=null, articleAbstract=

Due to their abundant sources and biodegradability, plant fibers have become one of the most economical materials for seawater uranium extraction. However, the main challenge in seawater uranium extraction is that marine microorganisms attach, grow, and reproduce on the surface of adsorbent materials, leading to blockage of pores on the material surface and reduction in the number of adsorption sites. To develop an adsorbent material with both good adsorption performance and antibacterial properties, this study extracts plant fibers from cycas leaves, performs amidoxime-based modification through a two-step method of cyanylation and oximation to obtain amidoxime-functionalized cycas leaves fibers (AO-CLF), and then prepares silver-loaded amidoxime-functionalized cycas leaves fibers (Ag@AO-CLF) by in-situ reduction. The antibacterial performance of Ag@AO-CLF against Escherichia coli and Staphylococcus aureus was studied. The effects of factors such as pH, mass of the adsorbent, adsorption time, initial uranium concentration and interfering ions on its adsorption of U (VI) were investigated. The reaction kinetics and thermodynamic behavior of U (VI) adsorption were explored. Meanwhile, the reusability of the adsorbent was studied through adsorption-desorption cycle experiments, the adsorption effect of the adsorbent on U (VI) under complex interfering ions and simulated seawater conditions was evaluated, and its adsorption mechanism was studied by FT-IR, SEM-EDS, and XPS characterization methods. The results show that the adsorption capacity of 0.2 g/L Ag@AO-CLF in a solution with pH=5.0 and an initial uranium concentration of 5 mg/L is 24.6 mg/g for U (VI), and it still exhibits an adsorption efficiency of up to 98% for U (VI)in an environment containing multiple competing ions. In simulated seawater with pH=8.15 and a uranium concentration of 5 mg/L, the adsorption rate and adsorption capacity of this adsorbent are 98.4% and 23.67 mg/g, respectively. Meanwhile, its inhibition zone diameters against Escherichia coli and Staphylococcus aureus are (12.8±0.2) mm、(11.0±0.5) mm, respectively, indicating good antibacterial performance. After 5 adsorption-desorption cycles, the removal rate and desorption rate of Ag@AO-CLF for U (VI) both remain above 90%, demonstrating good regeneration performance and strong stability, making it suitable for long-term applications in seawater uranium extraction. XPS results show that the adsorption of U (VI) by Ag@AO-CLF is mainly attributed to the C═O and N—O bonds in the amidoxime groups.

, authors=Xinxin GUO^{1, 2}, Hui ZHANG^{1, 2}, Tianze ZENG^{1, 2}, Ke'er GUO^{1, 2}, Yang LING^{1, 2}, Dexin DING^{1, 2}, authorsList=Xinxin GUO, Hui ZHANG, Tianze ZENG, Ke'er GUO, Yang LING, Dexin DING, authorCompany=null, correspAuthors=Hui ZHANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1311351094618452648, articleId=1311351094031250084, tenantId=1146029695717560320, journalId=1146123346816638986, language=CN, title=载银偕胺肟基功能化铁树叶纤维吸附海水铀的性能及机理研究, columnId=1171165155376275591, journalTitle=铀矿冶, columnName=封面文章, runingTitle=null, highlight=null, articleAbstract=

植物纤维因其来源丰富、可生物降解，已成为最具经济性的海水提铀材料之一；然而材料的生物污损问题仍是海水提铀面临的挑战之一。为了开发兼具良好铀吸附性能和抗菌性能的吸附材料，从铁树叶中提取植物纤维，通过两步法（氰基化和肟化）对其进行偕胺肟基改性，再通过原位还原制备载银偕胺肟基功能化铁树叶纤维（Ag@AO-CLF），通过批量铀吸附试验、抑菌圈试验及FT-IR、SEM-EDS、XPS表征手段研究其吸附性能、抗菌性能和吸附机理。结果表明，0.2 g/L的Ag@AO-CLF在pH=5.0、初始铀质量浓度为5 mg/L的溶液中对铀的吸附容量为24.6 mg/g，在含有多种竞争离子的环境下对U（Ⅵ）仍然表现出高达98%的吸附率；在pH=8.15、铀质量浓度为5 mg/L 的模拟海水中，该吸附剂对铀的吸附率和吸附容量分别为98.4%和23.67 mg/g；其对E.coli和S.aureus的抑菌圈直径分别为（12.8±0.2）mm、（11.0±0.5）mm，抗菌性能良好。经过5次吸附-脱附循环后，Ag@AO-CLF对U（Ⅵ）的去除率和脱附率均保持在90%以上，再生性能良好，稳定性强，对海水提铀具有很好的适用性。同时，XPS结果表明Ag@AO-CLF对U（Ⅵ）的吸附作用主要归因于偕胺肟基团上的C═N键和N—O键。

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郭鑫欣（1998—），女，山西运城人，硕士，主要研究方向为资源开发理论与技术。

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郭鑫欣（1998—），女，山西运城人，硕士，主要研究方向为资源开发理论与技术。

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