共轭三聚氰胺sponge@polyamidoxime/钠alginate@ZIF-67核壳水凝胶用于模拟海水中铀的高效萃取

IF 8.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL
Jiarui Zhang , Boyuan Chen , Yaochi Guo, Jing Fang, Zhensheng Yang, Zhiying Wang, Xingjiang Wu, Hao Li
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引用次数: 0

摘要

开发高性能吸附剂,实现海水高效提铀是核能可持续发展的关键。然而,传统的吸附剂往往受到铀吸附容量小、铀吸附选择性低、环境稳定性差的限制。在此,我们开发了共轭三聚氰胺sponge@polyamidoxime/钠alginate@ZIF-67 (MS@PAO/SA@ZIF-67)核壳水凝胶作为吸附剂,用于从模拟海水中高效提取铀,并在MS框架下原位合成了PAO/SA和ZIF-67。由于PAO独特的络合反应和丰富的ZIF-67吸附位点,制备的MS@PAO/SA@ZIF-67核壳水凝胶具有较大的铀吸附容量(478 mg/g)和较高的铀吸附选择性(41.53 %)。更重要的是,MS可以确保具有连通多孔网络和良好机械柔韧性的MS@PAO/SA@ZIF-67核壳水凝胶具有良好的环境稳定性(高铀吸附量为300 mg/g,三次循环后解吸率为78 %),在铀萃取领域具有良好的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Conjugated melamine sponge@polyamidoxime/sodium alginate@ZIF-67 core–shell hydrogels for efficient uranium extraction from simulated seawater
Developing high-performance adsorbents to achieve efficient uranium extraction from seawater is essential for the sustainable development of nuclear energy. However, conventional adsorbents are often limited by small uranium adsorption capacity, low uranium adsorption selectivity, and poor environmental stability. Herein, we develop conjugated melamine sponge@polyamidoxime/sodium alginate@ZIF-67 (MS@PAO/SA@ZIF-67) core–shell hydrogels as adsorbents for efficient uranium extraction from simulated seawater, where the PAO/SA and ZIF-67 are in-situ synthesized on MS framework. Due to unique complexation reaction of PAO and abundant adsorption sites of ZIF-67, the as-prepared MS@PAO/SA@ZIF-67 core–shell hydrogels exhibit large uranium adsorption capacity (478 mg/g) and high uranium adsorption selectivity (41.53 %). More importantly, the MS can ensure that MS@PAO/SA@ZIF-67 core–shell hydrogels with interconnected porous network and good mechanical flexibility deliver good environmental stability (high uranium adsorption capacity of 300 mg/g and desorption rate of 78 % after three cycles), which shows excellent application prospects in uranium extraction field.
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来源期刊
Separation and Purification Technology
Separation and Purification Technology 工程技术-工程:化工
CiteScore
14.00
自引率
12.80%
发文量
2347
审稿时长
43 days
期刊介绍: Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.
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