论文成果

Highly selective separation of lithium with hierarchical porous lithium-ion sieve microsphere derived from MXene

摘要:Lithium recovery from brine is critical for the sustainable development of energy-storage devices. However, the current lithium-ion sieve adsorbents are hampered by the adsorption rate and adsorption capacity. Herein, ultrathin nanosheets-assembled Li4Ti5O12 porous microspheres with hierarchical mesoporous structure are prepared by a hydrothermal method. Their high specific surface area (above 180 m2/g) exposed more adsorption sites and significantly accelerated the adsorption rate (equilibrium in 1 h). Besides, the H4Ti5O12 (HTO) microspheres showed superior Li+ adsorption capacity of 43.20 mg/g and high selectivity for Li+ from high Mgcontaining aqueous solutions. The lithium adsorption over HTO is endothermic and can be well defined as pseudo-second-order kinetic model and Langmuir model, indicating the chemical adsorption and monolayer adsorption. The facial regeneration of HTO by HCl shows excellent stability and the Li+ adsorption capacity remains above 93% after 20 cycles. Thus, this HTO microspheres can be regarded as a helpful candidate for lithium recovery.

关键字:Lithium adsorption capacity; Separation; Selectivity; Porous microsphere

ISSN号:0011-9164

卷、期、页:卷: 537

发表日期:2022-09-01

影响因子:9.501000

期刊分区(SCI为中科院分区):一区

收录情况:SCIE(科学引文索引网络版),EI(工程索引)

发表期刊名称:DESALINATION

参与作者:李小为,陈琳琳,朱林华,罗贵铃,Sun, Jing,Jiang, Lei

第一作者:巢艳红,朱文帅,刘植昌,徐春明

论文类型:期刊论文

论文概要:李小为,陈琳琳,巢艳红,朱林华,罗贵铃,Sun, Jing,Jiang, Lei,朱文帅,刘植昌,徐春明,Highly selective separation of lithium with hierarchical porous lithium-ion sieve microsphere derived from MXene,DESALINATION,2022,卷: 537

论文题目:Highly selective separation of lithium with hierarchical porous lithium-ion sieve microsphere derived from MXene