吸附
电化学
冠醚
水溶液
化学
萃取(化学)
电极
选择性
乙醚
活性炭
碳纤维
无机化学
材料科学
复合数
化学工程
离子
色谱法
催化作用
有机化学
复合材料
物理化学
工程类
作者
Xiaogang Wang,Shujuan Liu,Yueming Zhou,Jianqiang Luo,Jin Shi,Zhiyi Zhou,Jianguo Ma
标识
DOI:10.1016/j.seppur.2021.119235
摘要
In this paper, 4′-aminobenzo-18-crown-6 ether was grafted onto the surface of carbon felt via a diazotization reaction, and a composite material ([email protected]) was obtained. Then, [email protected] was used as an electrode to extract Sr2+ from aqueous solutions and simulated seawater by an asymmetric pulsed current-assisted electrochemical (AP-CE) method. Due to the excellent conductivity of carbon felt and the selectivity of crown ether molecules, the [email protected] electrode exhibited excellent electrochemical extraction performance. Under the optimal alternating potential, the maximum removal efficiency and maximum adsorption capacity of Sr2+ reached 99.5% and 668.9 mg g−1, respectively. The Sr2+ ions adsorbed on the surface of the [email protected] electrode could be desorbed by applying a positive voltage without an eluent, and the [email protected] electrode displayed good recyclability. This work provides an effective strategy for developing covalently-decorated crown ether carbon felt electrodes. The AP-CE method is of great significance for the selective electrosorption of metal ions.
科研通智能强力驱动
Strongly Powered by AbleSci AI