Hydrothermal synthesis and adsorption behavior of H4Ti5O12 nanorods along [100] as lithium ion-sieves

Zhao, Bing; Guo, Min; Qian, Fangren; Qian, Zhiqiang; Xu, Naicai; Wu, Zhijian; Liu, Zhong

doi:10.1039/d0ra05094f

Cited by 18 publications

(3 citation statements)

References 43 publications

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“…Figure 21). The results suggest that the granulated HMO/AlG(Al) can selectively adsorb Li ions in the presence of other cations, though with a lower affinity for Li ions, relative to other recently developed Li ion sieves [105]. The choice of various LIS granulation techniques suggests that numerous LIS materials with diverse properties and applications may be synthesized.…”

Section: Metal-based Liss Granulated With Alginatementioning

confidence: 98%

Granulation of Lithium-Ion Sieves (LISs) Using Biopolymers: A Review

Udoetok,

Karoyo,

Ubuo

et al. 2024

Preprint

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The high demand for lithium (Li) relates to clean renewable storage devices and the advent of electric vehicles (EVs). The extraction of Li ions from aqueous media calls for efficient adsorbent materials with various characteristics, such as good adsorption capacity, good selectivity, easy isolation of the Li-loaded adsorbent, and good recovery of the adsorbed Li ions. The widespread use of metal-based adsorbent materials for Li ions extraction relates to various factors: (i) the ease of preparation via inexpensive and facile templation techniques, (ii) excellent selectivity for Li ions in a matrix, (iii) high recovery of the adsorbed ions, and (iv) good cycling performance of the adsorbents. However, the use of nano-sized metal-based LISs is limited due to challenges associated with isolating the loaded adsorbent material from the aqueous media. Adsorbent granulation process employing various binding agents (e.g., biopolymers, synthetic polymers, and inorganic materials) affords functional particles with modified morphological and surface properties that support easy isolation from the aqueous phase upon adsorption of Li ions. Biomaterials (e.g., chitosan, cellulose, alginate, and agar) are of particular interest because their structural diversity renders them amenable to coordination interactions with metal-based LISs to form 3D microcapsules. The current review highlights recent progress in the use of biopolymer binding agents for the granulation of metal-based LISs, along with various crosslinking strategies employed to improve the mechanical stability of the granules. The study reviews the effects of granulation and crosslinking on adsorption capacity, selectivity, isolation, recovery, cycling performance and the stability of the LISs. Adsorbent granulation using biopolymer binders has been reported to modify the uptake properties of the bio-adsorbent materials to varying degrees, in accordance with the surface and textural properties of the binding agent. The review further highlights the importance of granulation and crosslinking for improving the extraction process of Li ions from aqueous media. This review contributes to manifold areas related to industrial application of LISs, as follows: 1) to highlight recent progress in the granulation and crosslinking of metal-based adsorbents for Li ions recovery, 2) to highlight the advantages, challenges, and knowledge gaps of using biopolymer-based binders for granulation of LISs, and finally, 3) to catalyze further research interest into the use of biopolymer binders and various crosslinking strategies to engineer functional adsorbent materials for application in Li extraction industry. Properly engineered extractants for Li ions are expected to offer various cost benefits in terms of capital expenditure, percent Li recovery, and reduced environmental footprint.

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Section: Metal-based Liss Granulated With Alginatementioning

confidence: 98%

Granulation of Lithium-Ion Sieves (LISs) Using Biopolymers: A Review

Udoetok,

Karoyo,

Ubuo

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Figure 21 ). The results suggest that the granulated HMO/ALG(Al) can selectively adsorb Li ions in the presence of other cations, though with a lower affinity for Li ions relative to other recently developed LISs [ 103 ]. The choice of various LIS granulation techniques suggests that numerous LIS materials with diverse properties and applications may be synthesized.…”

Section: Granulation Of Lissmentioning

confidence: 99%

Granulation of Lithium-Ion Sieves Using Biopolymers: A Review

Udoetok,

Karoyo,

Ubuo

et al. 2024

Polymers

View full text Add to dashboard Cite

The high demand for lithium (Li) relates to clean, renewable storage devices and the advent of electric vehicles (EVs). The extraction of Li ions from aqueous media calls for efficient adsorbent materials with various characteristics, such as good adsorption capacity, good selectivity, easy isolation of the Li-loaded adsorbents, and good recovery of the adsorbed Li ions. The widespread use of metal-based adsorbent materials for Li ions extraction relates to various factors: (i) the ease of preparation via inexpensive and facile templation techniques, (ii) excellent selectivity for Li ions in a matrix, (iii) high recovery of the adsorbed ions, and (iv) good cycling performance of the adsorbents. However, the use of nano-sized metal-based Lithium-ion sieves (LISs) is limited due to challenges associated with isolating the loaded adsorbent material from the aqueous media. The adsorbent granulation process employing various binding agents (e.g., biopolymers, synthetic polymers, and inorganic materials) affords composite functional particles with modified morphological and surface properties that support easy isolation from the aqueous phase upon adsorption of Li ions. Biomaterials (e.g., chitosan, cellulose, alginate, and agar) are of particular interest because their structural diversity renders them amenable to coordination interactions with metal-based LISs to form three-dimensional bio-composite materials. The current review highlights recent progress in the use of biopolymer binding agents for the granulation of metal-based LISs, along with various crosslinking strategies employed to improve the mechanical stability of the granules. The study reviews the effects of granulation and crosslinking on adsorption capacity, selectivity, isolation, recovery, cycling performance, and the stability of the LISs. Adsorbent granulation using biopolymer binders has been reported to modify the uptake properties of the resulting composite materials to varying degrees in accordance with the surface and textural properties of the binding agent. The review further highlights the importance of granulation and crosslinking for improving the extraction process of Li ions from aqueous media. This review contributes to manifold areas related to industrial application of LISs, as follows: (1) to highlight recent progress in the granulation and crosslinking of metal-based adsorbents for Li ions recovery, (2) to highlight the advantages, challenges, and knowledge gaps of using biopolymer-based binders for granulation of LISs, and finally, (3) to catalyze further research interest into the use of biopolymer binders and various crosslinking strategies to engineer functional composite materials for application in Li extraction industry. Properly engineered extractants for Li ions are expected to offer various cost benefits in terms of capital expenditure, percent Li recovery, and reduced environmental footprint.

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“…The working principle of titanium-based lithium ion sieves is based on the stoichiometric exchange of H + -Li + . 24 The accumulation of H + released can cause a drop in pH value and decelerate the exchange rate of H + -Li + , and the cases of adding buffer to brine (or simulated brine) to adjust the pH value in recent years are summarized in Table S1 (ESI †), [25][26][27][28][29][30][31][32][33] which shows the frequently-used buffers are NaOH, NaHCO 3 , NH 3 ÁH 2 O, Ca(OH) 2 , KHCO 3 and KOH. Chitrakar et al 27 used NaOH to adjust the pH value of the Salar de Uyuni brine from 6.7 to above 8, and the maximum adsorption capacity of HTO for Li + increased by 50%.…”

Section: Introductionmentioning

confidence: 99%