CHEMICAL ENGINEERING & TECHNOLOGY
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2020
·Vol. 43
·期 9
·1784-1791
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IF 1.543
Xiaowei Li,Linlin Chen,Yanhong Chao,Wang Chen,Jing Luo,Jun Xiong,Fengxia Zhu,Xiaozhong Chu,Huaming Li,Wenshuai Zhu
The lithium titanium oxide ion sieve with good structural stability and high adsorption capacity is generally considered to be a promising adsorbent for lithium recovery. Herein, the lithium ion sieve precursor Li 2 TiO 3 was prepared based on amorphous TiO 2 , and then Li + was acid-eluted to obtain the lithium adsorbent H 2 TiO 3 , denoted as HTO-Am. The structure and adsorption properties of HTO-Am were investigated, and the results demonstrated that the HTO-Am prepared at the optimum temperature had excellent adsorption properties for Li + . The adsorption process follows pseudo-second-order kinetic and Langmuir isotherm equations, indicating that lithium is adsorbed chemically and monolayer on HTO-Am. HTO-Am ion sieves were prepared successfully for the first time and exhibited high selectivity, favorable adsorption rate, and cycle performance for Li + .
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
CHEMICAL PHYSICS
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2024
·
IF 2
Xue Yang,Mengyu Lin,Jiumei Chu,Dianquan Dong
The unique properties of cesium compounds have garnered increasing attention, among which Cs 2 Ti 6 O 13 shows great potential for applications. This paper synthesized Cs 2 Ti 6 O 13 (CTO-3) using a template-assisted solvothermal method with cesium carbonate as the cesium source and tetrabutyl titanate as the titanium source. Among them, F127 and hexadecylamine are used as template agents to modulate the surface morphology and hydrophilicity of the precursor. The cesium ion sieve H 2 Ti 6 O 13 (HTO-3) synthesized after hydrochloric acid pickling has a large specific surface area and good hydrophilicity. This structure is conducive to the ion exchange between Cs + and H + , resulting in a fast adsorption rate. It is completed within 2 h, and the adsorption capacity reaches 360 mg/g, which is significantly greater than that of the traditional high-temperature solid-phase method. The adsorption process of Cs + on HTO-3 is more consistent with the pseudo-second-order kinetic equation model, and the adsorption process is chemical adsorption. HTO-3 exhibited good selectivity and cycle stability. At the fifth time of the adsorption-resolution cycle, the adsorption capacity was 87.1 % of the first time.
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
ACS Nano
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2025
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IF 16
Shilong Li,Kecheng Guan,Dandan Zhou,Dong Zou,Jian Lu,Wenbo Jiang,Bin Chen,Jian Qiu,Lele Cui,Tianxiang Yu,Yuqing Sun,Zhi Xu,Wanqin Jin,Wenheng Jing
Two-dimensional (2D) material membranes have significant potential for selectively transporting molecules and ions, crucial for environmental and energy applications significantly. However, challenges such as complex pathways and instability due to weak interactions hinder their performance. This study takes 2D MXene (Ti3C2Tx) as a platform and proposes a lattice vacancy-anchored chemical etching method to perforate MXene nanosheets and produce acid cross-linkers simultaneously. The etching process involves H2O2 oxidation consuming Ti atoms from the lattice vacancies of MXene to create peroxo titanic acid (PTA), precisely generating nanopores in the nanosheets for additional transport pathways. At the same time, the produced PTA acts as a cross-linking agent that enhances the interaction between MXene nanosheets to form stabilized interlayer channels. This approach results in multilevel features in the MXene membrane, offering abundant vertical water channels and robust interlayer ion-sieving channels. Consequently, both permeability and selectivity improve nearly 10-fold compared to the pristine membrane, overcoming previous trade-offs. This strategy presents a precise and ingenious method for perforating 2D materials and constructing high-performance mass transport channels of 2D membranes at various levels, benefiting sustainable and highly efficient desalination processes.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2020
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IF 3.871
Chunjie Liu,Baifu Tao,Zhihui Wang,Dong Wang,Ruili Guo,Liang Chen
This study proposes lithium ion sieves (LIS) embedded in a cross-linked hydroxyethyl cellulose (HEC) cryogel for the effective adsorption recovery Li + from brine and seawater resources. The Li + adsorption process conformed well with the Langmuir isotherm model, and the maximum Li + adsorption capacities are calculated to be 42.57–54.23 mg/(g of LIS). In addition, the Li + adsorption capacities of the LIS-HEC cryogels from artificial brine and seawater are 10.64 and 2.46 mg/(g of LIS), respectively. In addition, the Li + selectivity of the LIS-HEC cryogels against other cations is consistent that of LIS powder. Moreover, monolithic columns of LIS-HEC cryogels exhibit good mechanical stability, small back pressure, and the periods required to complete the acid treatment, adsorption, and desorption processes during continuous operation are greatly decreased in comparison with the performances of other composite absorbents. These results demonstrate the potential of the proposed LIS-HEC cryogels for recovering Li + from liquid lithium 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
Materials
·
2025
·Vol. 18
·期 10
·2373
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IF 3.2
Jing Zhu,Xiyun Yang,Yongqiang Huang,Rongzheng Yao
With the depletion of solid lithium ore, extracting lithium from salt lake brine has become a critical focus for future endeavors. A four-step method was used to synthesize high-purity H1.6Mn1.6O4for extracting Li+. Porous cubic Mn2O3was hydrothermally synthesized with carbon spheres and surfactants as templates. Then, it was converted to LiMnO2by calcining with Li2CO3. After roasting and acid pickling, H1.6Mn1.6O4was successfully synthesized. The impacts of calcination temperature, Li/Mn molar ratio and glucose addition on LiMnO2composition, loss percentage of dissolved Mn in precursor, and the adsorption characteristics of the lithium ion sieve were studied. Glucose inhibited the formation of LiMn2O4and promoted the formation of pure LiMnO2. The resulting precursor without impurities showed porous structure. After acid pickling, H1.6Mn1.6O4showed a high-adsorption performance and excellent cycle performance. After five cycles, adsorption capacity remained above 30 mg/g, and the loss percentage of dissolved Mn stabilized at about 1%. The Li+–H+exchange conformed to pseudo-second-order adsorption dynamics and the Langmuir adsorption isotherm equation, indicating that the adsorption process can be classified as monolayer chemical adsorption.
研究领域:
材料科学
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化学工程
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环境科学
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DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2017
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IF 4.01
Xueyi Guo,Xiao Cao,Guoyong Huang,Qinghua Tian,Hongyu Sun
A novel process of lithium recovery as lithium ion sieve from the effluent obtained in the process of spent lithium-ion batteries recycling is developed. Through a two-stage precipitation process using Na 2 CO 3 and Na 3 PO 4 as precipitants , lithium is recovered as raw Li 2 CO 3 and pure Li 3 PO 4 , respectively. Under the best reaction condition (both the amounts of Na 2 CO 3 and Li 3 PO 4 vs . the theoretical ones are about 1.1), the corresponding recovery rates of lithium (calculated based on the concentration of the previous stage) are 74.72% and 92.21%, respectively. The raw Li 2 CO 3 containing the impurity of Na 2 CO 3 is used to prepare LiMn 2 O 4 as lithium ion sieve, and the tolerant level of sodium on its property is studied through batch tests of adsorption capacity and corrosion resistance . When the weight percentage of Na 2 CO 3 in raw Li 2 CO 3 is controlled less than 10%, the Mn corrosion percentage of LiMn 2 O 4 decreases to 21.07%, and the adsorption capacity can still keep at 40.08 mg g −1 . The results reveal that the conventional separation sodium from lithium may be avoided through the application of the raw Li 2 CO 3 in the field of lithium ion sieve.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
DALTON TRANSACTIONS
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2018
·Vol. 47
·期 11
·3864-3871
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IF 4.099
Aolei Gao,Zhenhua Sun,Shaopeng Li,Xinjuan Hou,Huiquan Li,Qisheng Wu,Xinguo Xi
Li1.6Mn1.6O4 is a representative ion sieve material that is used to recover lithium from salt brines and bitterns owing to its high lithium ion adsorption capacity reaching 11.9–44 mg g−1. However, manganese dissolution during acid treatment hinders the industrial application of the material. For investigating the mechanism of manganese dissolution, the precursor Li1.6Mn1.6O4 and ion sieve H1.6Mn1.6O4 were prepared and characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), chemical content analyses, diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS), and X-ray photoelectron spectroscopy (XPS). The results of XRD, SEM, and FT-IR showed that the bulk phase of Li1.6Mn1.6O4 retained the spinel structure, whereas the lattice diminished during acid treatment. The results of chemical content analyses showed that the bulk phase of Li1.6Mn1.6O4 contained a few trivalent manganese atoms and that the mean valence of manganese in the material increased during acid treatment. DRIFTS and XPS exhibited that the surface of Li1.6Mn1.6O4 was mostly full of tetravalent manganese and retained the spinel structure during acid treatment. In the proposed mechanism of manganese dissolution, an electron of trivalent manganese in the bulk phase transfers to the surface and is captured by tetravalent manganese within the acidic environment. Then, tetravalent manganese is converted to bivalent manganese after acquiring sufficient electrons, and dissolution occurs simultaneously.
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Zhennan Chen,Jingjing Du,Jianbo Shi
Lithium, an emerging mineral of critical global significance, is recognized as a strategic resource by major economies worldwide, leading to an increased demand for this essential element. The extraction of lithium from rich sources, such as seawater and brine, has become commonplace. Among various liquid lithium extraction techniques, the lithium-ion sieve (LIS) adsorption method has attracted substantial attention owing to its simplicity, high recovery rate, and relatively low energy consumption. Despite significant advancements in LIS technology, the powdery nature of these materials poses challenges to handling and recycling, leading to inevitable adsorbent loss and limited practical applications. LISs are typically recycled through powder shaping, but the commonly employed shaping methods may result in a reduction in the adsorbent’s adsorption capacity. Therefore, it is urgent to develop a technology that can not only realize the recycling of LISs but also avoid the loss of the adsorbent’s adsorption capacity. We synthesized a titanium-based LIS (HTO) hybrid membrane by incorporating 2D MXene, known for its excellent properties across various applications. The incorporation of MXene into the membrane significantly increased the pore structure, enhancing adsorption site exposure and facilitating Li + migration. The HTO/MXene@PVC hybrid film demonstrated favorable adsorption properties, with an Li + adsorption capacity of 25.4 mg·g −1 within 24 h. Additionally, the film exhibited notable selectivity capacity and maintained its adsorption capacity above 90 % even after eight adsorption–desorption cycles, indicating excellent cycling performance. This study introduces a novel design concept for adsorbents, specifically for extracting Li + from liquid lithium sources, offering new insights for the development of Li + adsorbents aimed at enhancing lithium recovery.
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
Particuology
·
2021
·
IF 3.067
Suyu Zhou,Xiaojing Guo,Xi Yan,Yan Chen,Wanzhong Lang
Lithium ion sieve (LIS) has attracted great attention due to its high adsorption selectivity towards Li + . Herein, a new type of Zr-doped Ti-LIS (HZrTO) was synthesized by a simple calcination method. The adsorption capacity increased from 56.3 mg g −1 (before doping) to 93.2 mg g −1 after doping in LiOH solution (lithium 1.8 g L −1 ). The adsorption isotherm and adsorption kinetics of HZrTO accord with the Langmuir isotherm and the pseudo-second-order kinetic equation, respectively. Batch experiments showed that HZrTO has good stability and selectivity. In addition, HZrTO was granulated via epoxy resin (E-12), and the obtained granular adsorbent showed good adsorption capacity, excellent stability and high selectivity towards Li + .
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
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Jing Sun,Xiaowei Li,Yuhong Huang,Guiling Luo,Duanjian Tao,Jiangtao Yu,Linlin Chen,Yanhong Chao,Wenshuai Zhu
Extraction of lithium from liquid lithium resources has become a popular research field, among which H 2 TiO 3 material has great application potential. In this work, we further explored the correlation that the hydrophilicity of H 2 TiO 3 with its adsorption performance based on the existing work. The double surfactants method was used to regulate the morphology and hydrophilic functional groups of the surface to regulate the material hydrophilia and prepare nano-sized lithium ion sieve. The effect of surfactant and preparation method on the hydrophilicity and adsorption properties of the materials were investigated. The results show that the synthesized lithium ion sieve H 2 TiO 3 -4 (HTO-4) has excellent hydrophilicity and adsorption performance reflected with the maximum adsorption capacity of 56.03 mg·g −1 . Meanwhile, the adsorption capacity loss of the material is only 3.8 % after five cycles, which shows a satisfactory cyclic stability.
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 and Processing-Process Intensification
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2024
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IF 3.8
Ying Ma,Youzhi Liu,Jiayu Li,Chengqian Zhang,Shufei Wang
The demand for lithium-ion batteries in new energy vehicles and energy storage technologies is rapidly increasing, making the efficient extraction of lithium resources from salt lakes, which are rich in lithium reserves, crucial. To address the issues of slow adsorption rate and low adsorption capacity of lithium ion sieves in the adsorption column, In this paper, the high-gravity rotating packed bed (RPB) is utilized for the first time to enhance the adsorption process of Li + on lithium ion sieve composite material(CTS/L-HMO), thereby investigating its adsorption mechanism. Specifically, CTS/L-HMO was prepared by combining manganese-based lithium ion sieves with chitosan, and used as the filler for the RPB to adsorb lithium containing solution. The research showed that chitosan successfully coated the manganese-based lithium ion sieves and the distribution of various elements was uniform. In the RPB, the adsorption capacity of CTS/L-HMO increased first and then decreased with the increase of liquid flow rate and high gravity factor. Compared to a fixed bed, the adsorption capacity and adsorption rate in the RPB increased by 43.30 % and 33.33 %, respectively. After 10 cycles of regeneration experiments, the adsorption capacity of CTS/L-HMO remained as high as 30.19 mg/g, and it exhibited high selective adsorption for Li + .
研究领域:
材料科学
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环境工程
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化学工程
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电池技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）