High-efficiency core-shell magnetic heavy-metal absorbents derived from spent-LiFePO4Battery
High-efficiency core-shell magnetic heavy-metal absorbents derived from spent-LiFePO4Battery
复制标题
废磷酸铁锂电池高效核壳磁性重金属吸附剂
DOI：
10.1016/j.jhazmat.2020.123583
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发表时间：
2021
影响因子：
13.6
通讯作者：
Chen Hong
中科院分区：
文献类型：
--
作者：
Zou Wensong;Feng Xuezhen;Wang Ranhao;Wei Wenfei;Luo Siyuan;Zheng Renji;Yang Dazhong;Mi Hongwei;Chen Hong
Search for simple and efficient recycling methods to utilize spent lithium-ion batteries is crucial for achieving sustainable resource development and reducing the hazardous materials released from the spent batteries. Herein, we have developed a new strategy to utilize the spent LiFePO4batteries by utilizing the cathode plate as raw material to synthesize mesoporous core-shell adsorbent Mm@SiO2(Mm denoted as the magnetic material) through a simple alkaline leaching process. The as-converted material exhibits excellent adsorption capacity when it has been used to remove heavy metal ions in heavy metal polluted water. The adsorption capacities for Cu2+, Cd2+, and Mn2+have been achieved up to 71.23, 80.31 and 68.73 mg g−1, respectively. The detailed adsorption mechanism has been elucidated with comprehensive characterization techniques, including TEM, XPS, NEXAS, and EXAFS, the edge shared [Cu2O8] bipyramids can be fit against the EXAFS data to represent the atomic-scale local structure after Mm@SiO2adsorbs Cu2+. The present work demonstrates a novel routine to reutilize the spent lithium batteries, which is of great importance to achieve sustainable development based on the “waste-to-treasure” and “waste-to-control-waste” strategy for simultaneously reducing the hazardous release from industrial solid waste and heavy metal polluted water.
