Adsorption behavior of Li+ onto nano-lithium ion sieve from hybrid magnesium/lithium manganese oxide

Tian, Liyan; Ma, Wei; Mei, Han

doi:10.1016/j.cej.2009.10.008

Cited by 138 publications

(49 citation statements)

References 42 publications

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“…As for adsorbents (5a), (5b), (7a) and (7b), the morphology is mostly cubic due to the complete formation of spinel as confirmed by the XRD patterns. These results agree with other reported work [11,22,36]. …”

Section: Spinels' Morphology: Sem Imagingsupporting

confidence: 83%

“…Amongst all the investigated lithium adsorbents, manganese oxide based adsorbents are considered the most promising lithium adsorbent materials [11,[22][23][24] . Maximum reported lithium sorption capacities from synthetic or saline solutions for the different types of manganese oxide spinel types ranged from 12 mg/g to 45 mg/g, depending on the spinel structure, preparation method and employed sorption conditions [3,11,15,16,23,[25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…Maximum reported lithium sorption capacities from synthetic or saline solutions for the different types of manganese oxide spinel types ranged from 12 mg/g to 45 mg/g, depending on the spinel structure, preparation method and employed sorption conditions [3,11,15,16,23,[25][26][27]. Spinels are generally prepared via hydrothermal, emulsion or solid state reaction techniques, in addition to other methods such as electrospinning [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

“…Various technologies have been adopted for lithium recovery from seawater and desalination brines and these include, but are not limited to, membrane processes using nanofiltration (NF) and reverse osmosis (RO) [2,[6][7][8], precipitation [9], adsorption [10,11] or a combination thereof [12]. Adsorption proved to be a promising method for lithium recovery due to its high efficiency, selectivity, reproducibility and operability for scale-up.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synthesis, Characterization and Performance Evaluation of Lithium Manganese Oxide for Lithium Adsorption

Sorour¹,

Hani²,

El‐Sayed³

et al. 2017

Egypt. J. Chem.

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T he recovery of lithium from seawater via adsorption is a promising separation technique that could be incorporated within integrated salt recovery schemes. In this work, spineltype manganese oxide adsorbents were prepared and utilized for selective lithium adsorption from synthetic solutions. The semi-dry solid-state method was adopted to prepare spinel-type ion sieves using different manganese and lithium sources; manganese carbonate, manganese oxide, lithium carbonate and lithium hydroxide. Synthesis was conducted at different Li/ Mn starting molar ratios, firing temperatures and firing durations. The prepared spinels were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Moreover, average particle size and zeta potential were measured for selected spinel adsorbents. In addition, their sorption capacities and lithium removal efficiencies from synthetic solutions were evaluated. Lithium uptake results suggested that the spinels (H 1.1 Li 0.08 Mn 1.73 O 4.05 ) prepared from manganese carbonate and lithium hydroxide at Li/Mn ratio of 0.75 exhibited at pH 12 the highest lithium sorption capacity among other prepared spinels. The equilibrium of lithium sorption onto this adsorbent was best described by Langmuir isotherm model and the maximum equilibrium sorption capacity was found to be 50 mg/g. This capacity was obtained using 0.25 g/L of the adsorbent at pH 12 and its value is higher than previously reported values. Thus, the prepared spinel shows promising features that favor its utilization for lithium removal from wastewater and concentrated brines.

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Section: Spinels' Morphology: Sem Imagingsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis, Characterization and Performance Evaluation of Lithium Manganese Oxide for Lithium Adsorption

Sorour¹,

Hani²,

El‐Sayed³

et al. 2017

Egypt. J. Chem.

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“…It is found that the diffraction peak of HMO shifts to a higher diffraction angle than that of LMO, which can be explained by the mechanism showed in Figure 3c. During the Li + desorption process, H + in the solution replaces the original position of Li + in the LMO the ionic radius of H + is smaller than Li + , leading to cell shrinkage, which is also reported in literature [26]. The characteristic diffraction peaks of LMO-1 are still sharp and only the intensities decreased compared with the LMO, indicating that the HMO can be used for efficient adsorption of Li + .…”

Section: Optimization Of Synthesis Parameterssupporting

confidence: 59%

A Facile Synthesis of Hexagonal Spinel λ-MnO2 Ion-Sieves for Highly Selective Li+ Adsorption

et al. 2018

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Abstract:Ion-sieves are a class of green adsorbent for extraction Li + from salt lakes. Here, we propose a facile synthesis of hexagonal spinel LiMn 2 O 4 (LMO) precursor under mild condition which was first prepared via a modified one-pot reduction hydrothermal method using KMnO 4 and ethanol. Subsequently, the stable spinel structured λ-MnO 2 (HMO) were prepared by acidification of LMO. The as-prepared HMO shows a unique hexagonal shape and can be used for rapid adsorption-desorption process for Li + adsorption. It was found that Li + adsorption capacity of HMO was 24.7 mg·g −1 in Li + solution and the HMO also has a stable structure with manganese dissolution loss ratio of 3.9% during desorption process. Moreover, the lithium selectivity (α Li Mg ) reaches to 1.35 × 10 3 in brine and the distribution coefficients (K d ) of Li + is much greater than that of Mg 2+ . The results implied that HMO can be used in extract lithium from brine or seawater containing high ratio of magnesium and lithium.

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Time‐Dependent Cation Selectivity of Titanium Carbide MXene in Aqueous Solution

Wang

Torkamanzadeh

Majed

et al. 2022

Advanced Sustainable Systems

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has emerged as a promising alternative to traditional separation processes due to its high selectivity metrics and energy efficiency. [7] Depending on the nature of electroactive material, the ion immobilization and separation process mechanisms are different. For example, nanoporous carbons immobilize ions via electrosorption. Sub-nanometer pores may cause ion sieving or require ions to (partially) shed their solvation shell; this effect enables further tunability of the ion selectivity. [8] Even more confined sites for ion uptake are found in Faradaic materials. [9] Thereby, processes such as ion intercalation or other redox processes enable selectivity toward certain cations or anions. [9,10] For example, LiMn 2 O 4 provides facile intercalation into its crystal structure only for specific ions with matched size and valence, aligning with intrinsic ion selectivity. [11] Other materials like TiS 2 [12] show potential-dependent (tunable) ion selectivity according to the hydration energy of ions. This mechanism is linked with the specific onset potential for ion intercalation (or other redox processes), which gives rise to the unique battery-like feature in electrochemical measurements. [13] Yet, the ion selectivity of pseudocapacitive materials has remained largely unexplored. [14] MXene is a promising, quickly growing, and novel family of 2D metal carbides or nitrates. [15] The ability to reversibly Electrochemical ion separation is a promising technology to recover valuable ionic species from water. Pseudocapacitive materials, especially 2D materials, are up-and-coming electrodes for electrochemical ion separation. For implementation, it is essential to understand the interplay of the intrinsic preference of a specific ion (by charge/size), kinetic ion preference (by mobility), and crystal structure changes. Ti 3 C 2 T z MXene is chosen here to investigate its selective behavior toward alkali and alkaline earth cations. Utilizing an online inductively coupled plasma system, it is found that Ti 3 C 2 T z shows a time-dependent selectivity feature. In the early stage of charging (up to about 50 min), K + is preferred, while ultimately Ca 2+ and Mg 2+ uptake dominate; this unique phenomenon is related to dehydration energy barriers and the ion exchange effect between divalent and monovalent cations. Given the wide variety of MXenes, this work opens the door to a new avenue where selective ion-separation with MXene can be further engineered and optimized.

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Adsorption behavior of Li+ onto nano-lithium ion sieve from hybrid magnesium/lithium manganese oxide

Cited by 138 publications

References 42 publications

Synthesis, Characterization and Performance Evaluation of Lithium Manganese Oxide for Lithium Adsorption

Synthesis, Characterization and Performance Evaluation of Lithium Manganese Oxide for Lithium Adsorption

A Facile Synthesis of Hexagonal Spinel λ-MnO2 Ion-Sieves for Highly Selective Li+ Adsorption

Time‐Dependent Cation Selectivity of Titanium Carbide MXene in Aqueous Solution

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