Adsorption of Li+ by imprinted capacitor deionization — A new method for selective recovery of valuable lithium in acidic solutions

Progress and Prospect of Ion Imprinting Technology in Targeted Extraction of Lithium

“…The SEM and EDS scans of the material are shown in Figure 17B, which shows that the three-dimensional lattice structure of MWCNT in this electrode material is more complete; the maximum adsorption capacity of the material is 20.255 mg•g −1 as can be seen from the adsorption kinetic fitting curves in Figure 17C and the isothermal adsorption line in Figure 17D, and the adsorption capacity of N@ Li + -IPDI is higher than that of the other ions as can be seen from Figure 17E. Ning et al [43], in order to recover pure lithium resources in complex acidic solutions, immobilized 2H12C4 on the surface of multi-walled carbon nanotubes (MWCNTs) via the halogenation reaction of epichlorohydrin (ECH) using 2-hydroxymethyl-12-crown ether-4 (2H12C4) as a functional group to obtain the electrode material N@ Li + -IPDI for lithium ion selective recovery. Figure 17A shows the synthesis schematic, LiNO3 as template ion, 2H12C4 as complexing agent, ECH as functional monomer, acetic acid as cross-linking agent, and MWCNT as carrier to obtain 2H12C4-MWCNT, and then add acetylene black, polyvinylidene difluoride (PVDF), and N-methylpyrrolidone (NMP) to prepare the N@ Li + -IPDI.…”

“…Ning et al [ 43 ], in order to recover pure lithium resources in complex acidic solutions, immobilized 2H12C4 on the surface of multi-walled carbon nanotubes (MWCNTs) via the halogenation reaction of epichlorohydrin (ECH) using 2-hydroxymethyl-12-crown ether-4 (2H12C4) as a functional group to obtain the electrode material N@ Li + -IPDI for lithium ion selective recovery. Figure 17 A shows the synthesis schematic, LiNO3 as template ion, 2H12C4 as complexing agent, ECH as functional monomer, acetic acid as cross-linking agent, and MWCNT as carrier to obtain 2H12C4-MWCNT, and then add acetylene black, polyvinylidene difluoride (PVDF), and N-methylpyrrolidone (NMP) to prepare the N@ Li + -IPDI.…”

“…Ning et al [ 43 ] utilized an electrochemical method to synthesize the electrode material N@Li + -IPDI for selectively recovering lithium ions. Figure 32 A illustrates the impact of pH, applied voltage, residual weight, and the number of adsorption cycles on the adsorption efficacy.…”

“… Latest progress in the application of lithium extraction resources [ 31 , 32 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. Reproduced with permissions from Ref.…”

“…This paper analyzes and summarizes current lithium resource extraction processes. (1) It introduces the extraction process from ore and salt lake brine; (2) It describes the traditional methods of extracting lithium from both ore and salt lake brine, highlighting [31,32,[35][36][37][38][39][40][41][42][43][44][45][46][47]. Reproduced with permissions from Ref.…”