|本期目录/Table of Contents|

[1]胡张挺,陈乾浩,叶昊,等.共价有机框架纤维膜的制备及其海水提铀应用[J].浙江理工大学学报,2026,55-56(自科一):1-12.
　HU Zhangting,CHEN Qianhao,YE Hao,et al.Preparation of a covalent organic framework fiber membrane and its application to uranium extraction from seawater[J].Journal of Zhejiang Sci-Tech University,2026,55-56(自科一):1-12.
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共价有机框架纤维膜的制备及其海水提铀应用()
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浙江理工大学学报[ISSN:1673-3851/CN:33-1338/TS]

卷:
55-56
期数:
2026年自科第一期
页码:
1-12
栏目:
出版日期:
2026-01-10

文章信息/Info

Title:
Preparation of a covalent organic framework fiber membrane and its application to uranium extraction from seawater
文章编号:
1673-3851(2026) 01-0001-12
作者:
胡张挺; 陈乾浩; 叶昊; 温柔铭; 袁梓豪; 吴铭榜; 姚菊明
浙江理工大学材料科学与工程学院 ,杭州 310018
Author(s):
HU Zhangting;  CHEN Qianhao;  YE Hao;  WEN Rouming;  YUAN Zihao;  WU Mingbang;  YAO Juming
School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
关键词:
共价有机框架; 静电纺丝; 海水提铀; 吸附; 多级孔结构
分类号:
X524
文献标志码:
A
摘要:
为解决共价有机框架(Covalentorganicframeworks,COFs)粉末在海水提铀中分离困难和传质效率低等问题 ,通过静电纺丝牺牲模板法与原位合成法制备自支撑 COFs纤维膜(COFsfibermembrane,COFs-M) 。分析 COFs-M的微观形貌、比表面积、孔径分布、晶体结构和热稳定性能 ,并探究铀溶液 pH值、吸附时长、铀起始质量浓度以及循环吸附-解吸次数等因素对 COFs-M铀吸附性能的影响 。结果表明:COFs-M纤维截面呈多级孔结构 ,拥有远高于粉末的比表面积(77.48m2/g) ,微孔以小于 2 nm 为主 ,有利于促进铀酰离子的传质过程;具有良好结晶性和热稳定性;在 pH值为 6.00时吸附量最高 ,最大理论吸附容量达217.97mg/g,较传统粉末状 COFs(67.53mg/g)提升了 2.2倍 ,吸附过程符合伪二级动力学模型 , 实现快速化学吸附;经 6 次循环使用后 ,铀酰吸附率仍保持在 91.18%以上 ,有效克服了粉末回收困难与吸附团聚问题 。该文制备的 COFs-M保留了原有粉末的优异化学结构 , 而且通过提供铀酰离子快速迁移的传质通道和暴露更多的吸附位点等方式提高了吸附能力 ,为海水提铀材料的实际应用提供了创新策略。

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备注/Memo

备注/Memo:
基金项目 : 国家自然科学基金项目(52103273) ;浙江理工大学基本科研业务费专项项目(23212109-Y)收稿日期 : 2025-05-07 网络出版日期 : 2025-09-30
作者简介 : 胡张挺(1998— ) ,男 ,安徽池州人 ,硕士研究生 ,主要从事海水提铀方面的研究。通信作者 : 吴铭榜 ,E-mail:wumingbang@zstu. edu. cn
更新日期/Last Update: 2026-01-08