CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Bing Zhao,Zhiqiang Qian,Min Guo,Zhijian Wu,Zhong Liu
The improved adsorption capacities by increasing specific surface area methods are merely reached about 50% of H 4 Ti 5 O 12 ’s theoretical adsorption capacity, and the adsorption behavior and mechanism of lithium on special facets of H 4 Ti 5 O 12 remain unclear. In this study, a flower-shaped Li 4 Ti 5 O 12 and an octahedral Li 4 Ti 5 O 12 were prepared with the specific surface areas of 176.23 and 83.02 m 2 /g, and the corresponding adsorption behaviors of the obtained adsorbents exposed with (1 1 0) and (1 1 1) facets were investigated by using experimental and computational methods. The maximum Li + uptake values on H 4 Ti 5 O 12 (1 1 0) and H 4 Ti 5 O 12 (1 1 1) are 26.85 mg/g and 33.56 mg/g at 45 °C in 24 mM LiCl solutions, respectively. The fifth reuse ability of H 4 Ti 5 O 12 (1 1 1) still remains 88.9% of the original’s, which is higher than H 4 Ti 5 O 12 (1 1 0) (76.3%). Although with lower specific surface area, the octahedral H 4 Ti 5 O 12 have higher ions selectivity , greater adsorption capacity, and better reuse ability than flower-shaped H 4 Ti 5 O 12 , which may due to the special (1 1 1) facet exposed. Firstly, H 4 Ti 5 O 12 (1 1 1) owned small hole sizes can inhibit other ions diffusing into H 4 Ti 5 O 12 and improve the ion selectivity. Secondly, the immigration paths by the First-principles calculations revealed that the Li + migrate onto the Li 4 Ti 5 O 12 (1 1 1) is easier to than Li 4 Ti 5 O 12 (1 1 0) through 8a-16c-8a-16c sites. At last, [Li(H 2 O) 4 ] + can form the stable complexes and its adsorption energies on (1 1 1) are higher than on (1 1 0) facets, which may lead to larger adsorption capacity and better reuse ability. This work will help to understand the [Li(H 2 O) 4 ] + adsorption behavior and mechanism on different crystal facets by experiments and computations.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Junmin Wu,Wenxing Wang,Wenzhe Chen,Can Liu,Tianlong Deng,Xiaoping Yu
The extraction of lithium from liquid minerals, such as salt lake brines and underground brines, has garnered extensive interest due to its eco-friendly and cost-effective properties. However, the effectiveness of this method is constrained by the stability and capacity of the materials. Herein, a new-type inorganic carbon-supported H 2 TiO 3 adsorbent was developed by a novel in-situ polymerization synchronous conversion strategy. It was found that when resorcinol and formaldehyde containing Li 2 CO 3 and TiO 2 were polymerized in-situ and then calcined at 973.15 K, the resin was successfully carbonized to obtain the carbon supporter with a low degree of disorder, and the Li 2 CO 3 and TiO 2 in the supporter were synchronously converted into Li 2 TiO 3 and uniformly dispersed in the carbon matrix. Because of the large specific surface area and strong hydrophilicity of the carbon supporter, the material exhibited a maximum Li + adsorption capacity of 52.14 mg·g −1 , which was far higher than that of inorganic composite materials reported at present. Even the equilibrium adsorption capacity for Li + at a low concentration of 29.26 mg·L −1 reached 28.51 mg·g −1 . Following adsorption, the Li + in the material was easily eluted by 0.25 mol·L −1 HCl, and the elution rate was more than 90 % within 2 h. Dynamic adsorption using a fixed-bed was also performed at 298.15 and 343.15 K, and the adsorption capacity for the same concentration of Li + was 7.08 and 9.44 mg·g −1 , respectively. Because of the high capacity for low-concentration Li + and the promoting effect of temperature on adsorption, the material is well-suited for recovering Li + from liquid resources, particularly from geothermal water with high temperatures and low Li + concentrations.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Shengkai Liu,Huiling Li,Xi Li,Wei Wang,Chunguang Rong,Mengjie Yang,Yonggui Wang,Jing Wang,Yabei Xu,Daxin Liang,Yanjun Xie
The titanium-based lithium ion sieve (HTO), renowned for its exceptional adsorption performance and cyclic stability, was utilized in addressing the global shortage of lithium resources. However, the recovery and reuse efficiency of HTO in powder form is relatively low, which limits its application in industrial fields. To address this issue, this study utilized carboxymethyl cellulose (CMC) as the principal matrix material, while polyvinyl alcohol (PVA) played a dual function as both matrix and crosslinker, negating the necessity for supplementary crosslinking materials. Employing water as the only solvent, HTO was embedded into the CMC-PVA blended film matrix. It was observed that augmenting the CMC content substantially elevates the adsorptive capability of the film. However, this enhancement comes at the cost of reduced mechanical robustness and diminished stability in solution. Consequently, by balancing the influence of adsorptive capacity and stability through fine-tuning the CMC-to-PVA ratio. Even when HTO powder is encapsulated within the film, the adsorption film retains the excellent adsorption properties of HTO, achieving an adsorption capacity for lithium of 29.21 mg g −1 within 12 h. This study provides an innovative pathway and ideas for the large-scale, low-cost production of sustainable lithium-ion adsorption materials.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2018
·Vol. 42
·期 6
·4432-4442
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IF 3.201
Dongshu Sun,Minjia Meng,Yao Lu,Bo Hu,Yongsheng Yan,Chunxiang Li
An hybrid membranes based on functional GO nanosheet for selective adsorption lithium from compound was great potential. Here, a simple and efficient methodology was reported to obtain high stability, selectivity, and antifouling properties. More importantly, we studied the selective adsorption capacity of the fabricated membranes to lithium under a high magnesium and low lithium environment. The results showed that the fabricated membrane exhibited excellent lithium adsorption and highly selective adsorption efficiency. The fabricated membranes presented a relatively lower contact angle (67.226°) and a higher membrane flux (13.62 mL cm−2 min−1), which indicated that the fabricated membrane had a high hydrophilicity because the presence of carboxylic and hydroxyl groups of GO could enhance the interaction between the membrane and water. Moreover, the perm-selectivity results (β values were greater than 7) and regeneration ability (90.9% of the maximum adsorption capacity was retained after 10 cycles) were shown. The overall results suggested that functional GO can be considered as an effective additive for inorganic–organic composite membranes for the selective adsorption of lithium. It is worth mentioning that this methodology can be applied to selectively identify and adsorb lithium and is environmentally friendly, as it does not lead to secondary pollution.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
DESALINATION
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2024
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IF 8.3
Xunshuang Zhang,Junxiang Wu,Yu He,Chenhao Zhao,Minfang An,Liangbin Li
Lithium (Li) reserves in liquid resources are significantly higher than solid lithium ores and can fully meet the growing demand for Li. Lithium-ion sieves (LIS) adsorption of Li from liquid resources is one of the most promising methods. However, conventional polymeric adsorption materials encapsulate most LIS in dense structures, leading to low adsorption capacity and slow adsorption rate. Therefore, HTO-PVA/PAAm hydrogel was synthesized from titanium-type lithium-ion sieves (HTO), acrylamide, and polyvinyl alcohol by free radical polymerization. The HTO-PVA/PAAm hydrogel is characterized by a soft three-dimensional (3D) network, continuously adjustable pore structure, high specific surface area, and excellent hydrophilicity. Accordingly, the HTO-PVA/PAAm owns an excellent Li + adsorption capacity (22.16 and 31.31 mg·g −1 in pH 7.2 and 12 of LiCl solutions, respectively) among reported advanced adsorbents. 90 % of Li + is desorbed within 60 min, indicating the efficient and rapid Li + desorption response of the hydrogel. Meanwhile, this hydrogel still maintains a Li + adsorption capacity of 90 % after eight adsorption-desorption cycles, during which Ti loss is <0.42 % in each cycle. In this work, HTO-PVA/PAAm hydrogel synthesized by an environmentally friendly and low-cost approach shows great application potential as a new strategy for Li + adsorption from liquid resources.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
Journal of Cleaner Production
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2024
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IF 9.7
Xin Li,Xifan Li,Guijing Chen,Di Zhang,Lun Tian,Jun Chen,Changhui Liu,Bo Li,Alberto Tiraferri,Baicang Liu
To minimize manganese loss during acid leaching and to enhance the lithium adsorption capacity from shale gas wastewater of H 1.33 Mn 1.67 O 4 , this adsorbent material was doped with metallic elements in this study. Doping was achieved using solid-phase synthesis, resulting first in a Li 1.33 R X Mn 1.67−X O 4 (R = Fe, Ni, Al) precursor powder through high-temperature calcination. Then, lithium was leached out under acidic environment to obtain the desired H 1.33 R X Mn 1.67−X O 4 (HMO-R) adsorbents. The equilibrium adsorption capacities of HMO-R powders were measured as 20.7 mg/g, 20.7 mg/g, and 29.0 mg/g, for Fe, Ni, and Al dopants, respectively, surpassing that of the former H 1.33 Mn 1.67 O 4 (13.7 mg/L). Moreover, an average reduction of manganese loss by 30% for HMO-R was observed during lithium recovery/extraction cycles by acid leaching compared to undoped Li 1.33 Mn 1.67 O 4 . Overall, the doped adsorbent exhibited a stable crystal structure and high adsorption capacity, enhanced stability, performance, and efficiency in cycling experiments with respect to the undoped material.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
DESALINATION
·
2025
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IF 9.8
Tianshu Bao,Chenye Wang,Huiquan Li,Liangbin Li,Zhenhua Sun,Yong Wang,Xinjuan Hou,Aiping Peng,Ming Ye
The growing demand for lithium in the new sustainable society is advancing technology for lithium recycling from real Salt Lake brine, which has low concentrations in a near-neutral condition. Traditional adsorbents for this process typically exhibit excellent adsorption ability in alkaline solutions, limiting their industrial application for recycling lithium from the real salt lake. In this work, we designed and synthesized a manganese-based ion sieve loaded onto a cross-linked polystyrene carrier and modified it, HMO@PS-IDA, by incorporating iminodiacetate onto a polystyrene-based ion sieve. These conditions typically reduce the charge density on the surface of adsorbents, hindering the ion exchange process. Our innovative approach introduces cross-linked polystyrene for adsorbent granulation, providing modification sites, and selects Iminodiacetic acid (IDA) as the preferred anionic donor. The dual-structure design of anionic groups and ion sieves in HMO@PS-IDA results in a remarkable 2.6-fold increase in adsorption capacity at pH = 7, surpassing the individual capacities of its components. The adsorbent exhibits a regular spherical shape with a rough surface and uniformly distributed ion sieves, achieving an adsorption capacity of 6.85 mg·g −1 within 40 min in a real neutral system. The synergistic adsorption mechanism is attributed to the CHELPG atomic charge decrease from −0.16 to −1.44, maintaining the ion exchange driving force under neutral conditions. This innovation compensates for the loss of surface charge on the adsorbent, enabling a wide pH application range and overcoming the low adsorption capacity issue in near-neutral conditions. HMO@PS-IDA also demonstrates exceptional lithium adsorption capacity, with a 10-cycle adsorption capacity of 6.3 mg·g −1 , maintaining 92.1 % of the initial performance. These properties make HMO@PS-IDA a direct candidate for extracting Li + from neutral salt lake brines, and our findings provide a theoretical foundation for the modification of adsorption materials.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Shougui Wang,Yuwen Gao,Fei Gao,Jipeng Dong,Pan Zhang,Guanghui Chen
In this work, novel lithium manganese oxide ion sieves (LISs) H1.6Mn1.54Al0.02Cr0.04FyO4–y codoped with Al, Cr, and F ions were synthesized to improve their lithium adsorption performance. The resulting anion- and cation-codoped LISs maintain the spinel structure. Particularly, the introduction of F ions forms a fluoride coating layer on the surface of LISs, playing an important role in stabilizing the LIS structure. Moreover, some Mn3+ ions are partially replaced by Al3+ and Cr3+ ions and some of the surface O2– ions are replaced by F– ions, forming the stronger Al–O, Cr–O, and metal–fluorine bonds. The synergistic effect of the anion and cation codoping enhances the structural stability of LIS. Compared with undoped and double-doped LISs, the triple-doped LIS H1.6Mn1.54Al0.02Cr0.04F0.1O3.9 (HMACFO-10) exhibits a lower manganese dissolution loss, enhanced Li+ adsorption performance, and better reusability. In addition, HMACFO-10 affords good adsorption selectivity for Li+ ions from brines.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
Materials Today Energy
·
2025
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IF 8.6
Yongjie Zhu,Ruirui Wang,Yongquan Zhou,Wanxia Ma,Jie Fan,Xiaochuan Deng,Chaoliang Zhu,Aimin Yu,Guowang Xu,Dong-Sheng Li,Chenghua Sun
With the booming development of the new energy industry, the demand for lithium resources has increased dramatically. Adsorption is a green and inexpensive process for lithium extraction from saline lakes but current commercial adsorbents generally have low adsorption capacity and poor stability, and are difficult to be applied to the purification of high-concentration lithium salts. Herein, we report an adsorbent, sulfonate-modified MIL-101(Cr) (MIL-101(Cr)-SO 3 H), for the efficient extraction of lithium from brine and highly concentrated lithium solution. It has high adsorption capacity (118.2 mg g −1 ) on Li + adsorption and fast kinetics (3.5 h to achieve full adsorption equilibrium). Detailed investigations clarify that the adsorption follows the Freundlich model in a spontaneous manner. The adsorption mechanisms of MIL-101(Cr)-SO 3 H for Li⁺ primarily include physical adsorption, chemical adsorption, and functional group adsorption. Such capacity is demonstrated with high durability and selectivity, indicating MIL-101(Cr)-SO 3 H is a promising adsorbent for Li + recycling and extraction.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
HYDROMETALLURGY
·
2021
·
IF 4.156
Luri Bao,Jingze Zhang,Jie Wu,Guotai Zhang,Yang Yang,Weiping Tang,Mei Xue
Owing to the increasing global demand for lithium, extraction of lithium from salt lake brine water has received considerable attention. In this study, the magnesium doping to produce Li 1.6 Mg x Mn 1.6-x O 4 (LMMO) was designed to overcome the limitation caused by the loss of Mn due to dissolution. The chemical and morphological properties of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The XRD results confirmed that the crystal structure of Li 1.6 Mn 1.6 O 4 was retained after Mg-doping. Scanning electron microscopy and energy-dispersive X-ray spectroscopy showed that LMMO has a flake-shaped structure and the Mg 2+ ions were uniformly distributed in the precursor. The doping of Mg 2+ led to the decrease of Mn 3+ content in the precursor, improving its structural stability. The adsorption capacity of LMMO-6% was 35.6 mg g −1 , which was greater than that of the undoped sample (33.2 mg g −1 ). After the tenth cycle, the dissolution loss of Mn in LMMO-6% was 0.55%, and it is smaller than that for lithium manganese oxide (0.94%). Results confirm that the structural stability was improved compared to undoped adsorbents. Moreover, batch adsorption experiments demonstrated the potential of the HMMO-6% adsorbent to be used for lithium adsorption from real salt lake brine.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Guotai Zhang,Chunxi Hai,Yuan Zhou,Weiping Tang,Jingze Zhang,Jinbo Zeng,Yanhua Liu,Shengde Dong,Guiping Peng
A surge of interest has been attracted by Li 1.6 Mn 1.6 O 4 -type adsorbent for collecting lithium resources from salt-lake brines due to its excellent selectivity, high theorical adsorption capacity up to 72. 3 mg g −1 and low cost. However, its large-scale practical application is limited because of its bone element Mn dissolution during the cycled desorption process. Herein, F and Al co-modifying technique, an efficient method for stabilizing its spinel structure or forming protective coating, was employed to improve the application performances of Li 1.6 Mn 1.6 O 4 -type adsorbent prepared by sol–gel method. Based on the various characterization results, the co-modification not only leads to the formation of fluoride-rich coating and the substitution of Mn 3+ by Al 3+ , but also generates the active adsorbents with abundant nano-islands. DFT calculations revealed that the coating layer is indeed AlF 3 rather than LiF. In addition, in-situ high-temperature XRD tests demonstrates that the co-modification can significantly enhance the heat resistance and structural stability of the material. As-prepared adsorbent exhibits greatly improved Li adsorption capacity (increased from 28.5 to 33.7 mg g −1 ), lower Mn loss rate (decreased from 2.1 to 1.8%), enhanced cycling stability and good adsorption selectivity in the Qarhan brine containing Na + , K + , Ca 2+ , Mg 2+ , which is very significant and important for effectively removing lithium from low-grade brines.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
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IF 15.1
Qiuyue Wang,Mu Li,Bing Zhao,Boyang Meng,Wutong Chen,Zekai Jiang,Xin He,Bing Li,Xiao-yan Li,Lin Lin
The rapid consumption of lithium ion (Li + ) battery for electronic devices has significantly increased the demand for lithium resource in recent years. The salt-lake brine is considered as the ideal source for Li + extraction, but the co-existing cations, such as Na + and K + limit its recovery efficiency when the adsorption method is applied. In this study, the H 3 LiTi 5 O 12 nanoparticles (HTO) with a spinel structure were synthesized as Li + -selective adsorbent. The static adsorption experiments showed that the Li + absorption capacity of HTO was significantly affected by the pH of bulk solution, and exhibited a high separation factor of Li + /Na + and Li + /K + at 37 and 16, respectively. When HTO was mixed with activated carbon (AC) and coated on the cathode plate, the Li + adsorption kinetics (rate constant) was significantly enhanced from 0.18 to 0.25, due to the accelerated rate of the film diffusion driven by the electric field. Density functional theory (DFT) calculation result showed that applying electricity can strengthen the hydrogen bond between Li and O atom on the HTO (1 1 1) facet. When the AC mixing ratio was increased from 10% to 50%, the Li + desorption efficiency increased from 47% to 90%, but at the expense of sacrificing the adsorption capacity, which decreased from 18.1 mg/g to 9.8 mg/g. In terms of the overall recovery efficiency of Li from brine, the weight ratio of HTO:AC at 9:1 was suggested for the electro-sorption method. Finally, the Li + recovery from actual brine was successfully demonstrated, with 7.1 mg/g of adsorption capacity and well stability.
研究领域:
材料科学
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电化学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）