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Ionic double-shell magnetic covalent organic framework for sharp and fast adsorption of critical metals

文献类型：期刊论文

作者Pittman, Aaron S.1,2,3,4; Cao, Yan1,2,3; Lu, Shuai1,5
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2024-08-09
卷号341页码:14
关键词Magnetic covalent organic framework Adsorption Selectivity Critical metals Rare earth elements
ISSN号1383-5866
DOI10.1016/j.seppur.2024.126846
通讯作者Cao, Yan(caoyan@ms.giec.ac.cn)
英文摘要The recovery of critical metals (CMs) from waste streams has garnered increasing attention in recent years due to their increased demand, engineering applications, and vulnerability to supply disruptions. Herein, we synthesize two novel ionic materials, namely GIEC(704a) (magnetic covalent organic framework consisting of Fe3O4/TAGH-Dha) and GIEC(704b) (double-shell magnetic material formed of Fe3O4/TAGH-Dha/TpPa) using the solvothermal method for the recovery of CMs. The experimental data supported Langmuir's isotherm model, and the results showed that both GIEC(704a) and GIEC(704b) exhibited remarkable adsorption capacities (q(max)). GIEC(704a) exhibited adsorption capacities of 1531.8, 884.9, and 729.9 mg/g, while GIEC(704b) had 1681.5, 854.7, and 800 mg/g (Al3+, Fe3+ and Cu2+) capacities, respectively. Furthermore, GIEC(704a) and GIEC(704b) demonstrated approximately 80 % adsorption of REEs with high adsorption capacities of 53.6, 52.3, 41.2 mg/g and 55.3, 55.4, and 43.4 mg/g (Lanthanum, Yttrium, and Neodymium), respectively with excellent selectivity. The large surface areas of GIEC(704a) and GIEC(704b)-147.9 m(2)/g and 2143.1 m(2)/g, respectively-explain their excellent performance. The results of the kinetic study support the pseudo-second-order model with a high coefficient of (R-2 = 0.9999), and an efficiency of over 90 % was achieved within 5 min. The findings of the thermodynamic analysis indicated that the adsorption process was spontaneous and endothermic. Furthermore, the outstanding reusability of GIEC(704a) and GIEC(704b) confirmed their suitability for environmental chemical engineering and industrial applications.
WOS关键词RARE-EARTH-ELEMENTS ; EFFICIENT REMOVAL ; RECOVERY ; NANOCOMPOSITE ; HEAVY ; LANTHANIDES ; POLLUTANTS ; SCANDIUM ; ALLOY ; WATER
资助项目National Natural Science Foundation of China[22178339] ; The 2023 Innovation-driven Development Special Foundation of Guangxi Province[AA23023021] ; Hundred Talents Program (A) of the Chinese Academy of Sciences
WOS研究方向Engineering
语种英语
WOS记录号WOS:001325420000001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; The 2023 Innovation-driven Development Special Foundation of Guangxi Province ; Hundred Talents Program (A) of the Chinese Academy of Sciences
源URL[http://ir.giec.ac.cn/handle/344007/42987]  
专题中国科学院广州能源研究所
通讯作者Cao, Yan
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Peoples R China
5.Anhui Univ, Coll Chem & Chem Engn, Hefei 230601, Peoples R China
推荐引用方式
GB/T 7714		 Pittman, Aaron S.,Cao, Yan,Lu, Shuai. Ionic double-shell magnetic covalent organic framework for sharp and fast adsorption of critical metals[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2024,341:14.
APA Pittman, Aaron S.,Cao, Yan,&Lu, Shuai.(2024).Ionic double-shell magnetic covalent organic framework for sharp and fast adsorption of critical metals.SEPARATION AND PURIFICATION TECHNOLOGY,341,14.
MLA Pittman, Aaron S.,et al."Ionic double-shell magnetic covalent organic framework for sharp and fast adsorption of critical metals".SEPARATION AND PURIFICATION TECHNOLOGY 341(2024):14.

入库方式： OAI收割

来源：广州能源研究所

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