التفاصيل البيبلوغرافية
| العنوان: |
Preparation of a novel ion-imprinted membrane using sodium periodate-oxidized polydopamine as the interface adhesion layer for the direction separation of Li+ from spent lithium-ion battery leaching solution. |
| المؤلفون: |
Li, Zheng1 (AUTHOR) lizhenghit@126.com, He, Guangze1 (AUTHOR), Zhao, Guochen1 (AUTHOR), Niu, Jingdong1 (AUTHOR), Li, Lin1 (AUTHOR), Bi, Jianan1 (AUTHOR), Mu, Hangkui1 (AUTHOR), Zhu, Chuntao1 (AUTHOR), Chen, Zicheng1 (AUTHOR), Zhang, Lanhe1 (AUTHOR), Zhang, Haifeng1 (AUTHOR), Zhang, Jian1 (AUTHOR), Wang, Bing1 (AUTHOR), Wang, Yina1 (AUTHOR) |
| المصدر: |
Separation & Purification Technology. Dec2021, Vol. 277, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*CHEMICAL stability, *LITHIUM-ion batteries, *ADSORPTION capacity, *DENSITY functional theory, *POLYMERIZATION, *LITHIUM ions |
| مصطلحات جغرافية: |
SAO Paulo (Brazil) |
| مستخلص: |
• Using sodium periodate oxidized polydopamine (SP-PDA) as interface adhesion layer. • A novel ion-imprinted membrane (SP-IIM) was prepared to recover Li from spent LIBs. • Cross-linking within the SP-PDA layer increased the reusability of SP-IIM. • Flaky structure of SP-PDA contributed to the robust adsorption capacity of SP-IIM. • The interaction mechanism between 12-Crown-4 and target ions was revealed by DFT. In this paper, a novel ion-imprinted membrane (SP-IIM) was prepared by combining graft polymerization with chemical modification and from polydopamine (PDA) oxidized by sodium periodate (SP-PDA) as the interface adhesion layer. The PDA was oxidized by sodium periodate at pH 5.0, causing it to undergo extensive cross-linking within the adhesion layer to provide better chemical stability for improving the reusability of the membrane. The flaky microstructure of the SP-PDA provided more surface area for the loading of 12-Crown-4 (12C4). The optimal adsorption capacity of the SP-IIM for Li+ was 42.58 mg·g−1 after incubating the membrane in a 200 mg·L–1 solution of Li+ for 180 min. The kinetics and isotherm data of the adsorption of Li+ onto the SP-IIM were fitted to pseudo-second-order kinetics and Langmuir model, respectively. Through selective adsorption experiments, the optimal selective separation factors of Li+/Mn2+, Li+/Co2+, Li+/Ni2+ were 6.71, 5.84 and 3.03, respectively. Density functional theory (DFT) calculations were performed on the coordination of metal cations (Li+, Mn2+, Co2+, and Ni2+) by 12C4, the results of which showed that the weak binding of Li+ to 12C4, as well as the favorable dehydration of Li+, made it easier for Li+ to be coordinated by 12C4 in a multicomponent solution containing Li+, Mn2+, Co2+, and Ni2+. The oxidation of the PDA by sodium periodate caused significant intermolecular cross-linking within the SP-PDA layer to reduce the possibility of the ion-imprinted layer detaching from the membrane, thereby increasing the reusability of the SP-IIM. After five repeated adsorption–desorption cycles, the adsorption capacity of the SP-IIM only decreased by 4.6%, which indicated that the SP-IIM was highly reusable. This work improved the adsorption capacity and reusability of ion-imprinted membranes by changing the microstructure of the interface adhesion layer, which was of great significance to the further development of ion-imprinted membranes. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
