A scalable three-dimensional porous lambda-MnO2_rGO_Ca-alginate composite electroactive film with potential-responsive ion-pumping effect for selective recovery of lithium ions
文献类型：期刊论文
| 作者 | Zhang, Zheng; Du, Xiao; Wang, Qiang; Gao, Fengfeng; Jin, Tongtong; Hao, Xiaogang; Ma, Pengfei; Li, Jun; Guan, Guoqing |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2021-03-15 |
| 卷号 | 259 |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2020.118111 |
| 英文摘要 | A scalable three-dimensional (3D) porous composite electroactive film consisting of lambda-MnO2, reduced graphene oxide (rGO) and calcium alginate (Ca-alg) was successfully fabricated and employed for the selective extraction of Li(+ )ions with low concentration via an electrochemically switched ion exchange (ESIX) technology. The Li+ ion adsorption capacity of the obtained lambda-MnO2/rGO/Ca-alg composite electmactive film reached as high as 32.7 mg g(-1) and more than 90% of its equilibrium adsorption capacity was achieved in 1 h. The lambda-MnO2/rGO/Ca-alg composite electroactive film displayed evident selectivity towards Li+ ions. The separation factors for Li+/Na(+ )and Li+/M2+ reached 1040.57 and 358.96, respectively, while tested in simulated brine. The composite film also showed superior electrochemical stability, and the normalized ion exchange capacity retained at 98.3% of its initial value even after 100 successive cycles. The excellent Li+ ion recovery performance of the obtained composite film should be attributed to its low ion transfer resistance owing to the porous network structure and the potential-responsive ion-pumping effect in the ESIX process. In addition, a large-scale of such a composite electroactive film could be effectively fabricated by controlling the spreading area of the mixed solution consisting lambda-MnO2, rGO and alginate binder. It is expected that such a scalable 3D porous composite film could be a promising alternative for the recovery of lithium ions from salt lake brine. |
| 源URL | [http://ir.isl.ac.cn/handle/363002/34339]  |
| 专题 | 青海盐湖研究所_盐湖资源与化学实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Zheng,Du, Xiao,Wang, Qiang,et al. A scalable three-dimensional porous lambda-MnO2_rGO_Ca-alginate composite electroactive film with potential-responsive ion-pumping effect for selective recovery of lithium ions[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,259. |
| APA | Zhang, Zheng.,Du, Xiao.,Wang, Qiang.,Gao, Fengfeng.,Jin, Tongtong.,...&Guan, Guoqing.(2021).A scalable three-dimensional porous lambda-MnO2_rGO_Ca-alginate composite electroactive film with potential-responsive ion-pumping effect for selective recovery of lithium ions.SEPARATION AND PURIFICATION TECHNOLOGY,259. |
| MLA | Zhang, Zheng,et al."A scalable three-dimensional porous lambda-MnO2_rGO_Ca-alginate composite electroactive film with potential-responsive ion-pumping effect for selective recovery of lithium ions".SEPARATION AND PURIFICATION TECHNOLOGY 259(2021). |
入库方式： OAI收割
来源：青海盐湖研究所
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