Development of a Fibrous Adsorbent Prepared Via Green Vapor-Phase Grafting Polymerization for Uranium Extraction.
Development of a Fibrous Adsorbent Prepared Via Green Vapor-Phase Grafting Polymerization for Uranium Extraction.
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DOI：
10.1021/acsomega.1c04048
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发表时间：
2021-11-09
期刊：
影响因子：
4.1
通讯作者：
Ma HJ
中科院分区：
文献类型：
--
作者：
Ding RH;Xu X;Huang C;Ma L;Ye F;Xu L;Wang ZQ;Ma HJ
由于有机试剂用量大、成本高、工业化难度大等问题，开发高效经济的铀提取技术是保障核能稳定供应的必然趋势。采用绿色气相接枝聚合（VPGP）技术，在丙烯腈（AN）单体上引入偕胺肟基，制备了一种新型纤维吸附剂AO-HPE纤维。在80 °C的封闭蒸发冷凝回流系统中，将气态丙烯腈接枝到超高分子量聚乙烯（UHMWPE）纤维上。该创新技术不仅赋予合成过程高的单体利用率，而且具有良好的环境友好性。AO-HPE纤维在铀溶液中的最大吸附容量（Qm）为1144.94mg·g-1，在模拟海水中的最大吸附容量为14.11mg·g-1。同时，铀的选择性高于主要竞争离子钒（吸附质量比接近5）。吸附过程符合化学吸附机理。该工作为铀提取吸附剂的合成提供了新的思路，并为AN单体接枝聚合的可持续发展提供了新的思路。
Owing to many problems of the detriment by large amount of organic reagents, high cost and difficulty of industrialization, development of high-efficiency economical technologies for uranium extraction is an irresistible trend to support steady supply of nuclear energy. Herein, a novel fibrous adsorbent, named as AO-HPE fibers, was prepared by introduction of amidoxime groups using the green vapor-phase grafting polymerization (VPGP) technology of monomer acrylonitrile (AN). Gaseous AN was grafted onto the ultra high molecular weight polyethylene (UHMWPE) fibers at 80 °C in the enclosed evaporation and condensation reflux system. The innovative technology not only endowed synthetic process high monomer utilization ratio but also excellent environmental friendliness. The AO-HPE fibers exhibited an appreciable calculated maximum adsorption capacity (Qm) of 1144.94 mg·g–1 in uranium solution and an adsorption capacity of 14.11 mg·g–1 in simulated seawater. Meanwhile, the higher uranium selectivity than main competing ion vanadium (adsorption mass ratio was almost 5) was achieved. The adsorption process accorded closely with chemisorption mechanism. This work provided a novel idea for the synthetic method of adsorbents for uranium extraction, and inspired the sustainable technologies for grafting polymerization of monomer AN.
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DOI：
10.1002/advs.202001573
发表时间：
2021-01
期刊：
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子：
--
作者：
Sun Q;Song Y;Aguila B;Ivanov AS;Bryantsev VS;Ma S
通讯作者：
Ma S
影响因子：
3.2
作者：
HORROCKS, AR;ZHANG, J;HALL, ME
通讯作者：
HALL, ME
将 ZIF-67 颗粒锚定在偕胺肟化聚丙烯腈纤维上，用于废水和海水中的放射性核素封存
影响因子：
13.6
作者：
Li, Wenting;Liu, Yang-Yi;Pang, Huan
通讯作者：
Pang, Huan
影响因子：
5.5
作者：
Balzano, Luigi;Coussens, Betty;Lellinger, Dirk
通讯作者：
Lellinger, Dirk
影响因子：
4.2
作者：
Parker, Bernard F.;Knight, Abigail S.;Francis, Matthew B.
通讯作者：
Francis, Matthew B.