Frontiers in Nutrition
·
2025
·
IF 5.1
Yayuan Zhai,Yue Chen,Ang Gao,Yichen Dou,Yang Gao,Heran Xie
This study aimed to develop a glucosamine-magnesium composite (GlcN-Mg) as a novel Pickering emulsion stabilizer for the preparation of GlcN-Mg stabilized Pickering emulsion (GlcN-Mg PE) and systematically characterize its structural properties and emulsification performance. Structural analysis revealed that Mg 2+ coordination reduced GlcN⋅HCl particle size from 1,117 ± 222.58 to 393.8 ± 45.42 nm, expanded its crystal lattice, and created a porous structure with a 22.9 ± 1.80 nm pore size. In vitro studies have shown that GlcN-Mg exhibits exceptional stability in food matrices and controlled Mg 2+ release during gastrointestinal digestion. Then GlcN-Mg composite was employed to prepare water-in-oil (W/O) GlcN-Mg PE under different homogenization speeds (5,000–25,000 rpm), GlcN-Mg concentrations (0.3%–1.3%), and oil-to-water ratios (3:7–8:2). Rheological analysis indicated that GlcN-Mg PE exhibited a distinct threshold effect under varying conditions, while environmental factors significantly influenced emulsion stability. Furthermore, during in vitro gastrointestinal digestion, GlcN-Mg PE exhibited controlled-release ability, with the Mg 2+ release rate reaching 80.42 ± 1.94% during intestinal digestion. Its stability across a wide range of conditions highlights its potential applications in complex emulsion systems. Schematic illustrating the preparation process and experimental operation of glucosamine-magnesium composite (GlcN-Mg) and glucosamine-magnesium composite stabilized Pickering emulsion (GlcN-Mg PE).
研究领域:
食品科学与技术
·
胶体与界面化学
·
营养递送系统
·
材料科学
·
功能性食品
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Ting Qi,Xiaona Wei,Xianfu Chen,Tiandan Lu,Dongliang Jin,Jing Zhong
Nanofiltration (NF) membranes are emerging as promising candidates for lithium extraction. However, their performance is challenged by the comparable physicochemical characteristics of Li + and Mg 2+ . In this work, a dual-reinforcement strategy is proposed to simultaneously enhance both selectivity and permeability by combining the densification of the polyamide (PA) network and the construction of Li + -selective transport channels. During the interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC), the cross-linking density of the PA layer is increased by adding sodium dodecyl sulfate (SDS), while Li + -selective transport nanochannels are constructed by incorporating 15-crown-5 ether (CE). This synergistic modification enhances Mg 2+ rejection via intensified size exclusion and facilitates Li + permeation through ion-specific recognition. The resulting PIP/SDS/CE-PA membrane exhibits a high cross-linking degree of 91.26 %, a reduced pore size of 0.70 nm, and a narrow pore size distribution (σ = 1.22). Molecular dynamics simulations confirm the preferential complexation of CE with Li + , and that Li + exhibits faster and more favourable translocation in the PIP/SDS/CE-PA membranes, thereby facilitating its selective transport. Experimentally, the membrane achieves a high MgCl 2 rejection of 97.1 % and a low LiCl rejection of 56.7 %, yielding an exceptional Li + /Mg 2+ selectivity of 30 in a MgCl 2 /LiCl binary system, while maintaining a water permeance of 5 L m −2 h −1 bar −1 . These findings demonstrate the strong potential of the PIP/SDS/CE-PA membrane for the direct treatment of high Mg 2+ /Li + ratio salt-lake brines and offer a versatile strategy for designing next-generation NF membranes for selective ion separations.
研究领域:
材料科学
·
膜技术
·
分离科学
·
环境工程
·
能源材料
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Shuwei Jia,Jun Wei,Xinyu Ma,Zhi Wang
High-efficiency lithium extraction from salt lakes is pivotal to meet escalating lithium demand driven by energy storage and electric vehicle industries. In this study, the small-molecule aminoacetonitrile (AAN) was introduced as an aqueous-phase co -monomer to modulate the interfacial polymerization process between polyethyleneimine (PEI) and trimesoyl chloride (TMC). Specifically, the primary amine in AAN molecules reacted with acyl chloride moieties in TMC, occupying reaction sites and thereby preserving a larger fraction of unreacted primary amine groups on the PEI chains within the separation layer, which significantly enhanced the membrane's surface positive charge. Simultaneously, the nitrile groups of AAN preferentially coordinated with Li + ions to effectively counteract the repulsive effect of the strongly positively charged membrane surface on Li + . This “charge-coordination” synergistic mechanism enabled precise control over the separation process. When treating mixed salt solution with a Mg 2+ /Li + mass ratio of 100, the optimized membrane achieved a separation factor of 74.7, along with enhanced MgCl 2 rejection of 99.3 % compared to virgin membrane's 93.9 %, and reduced LiCl rejection from 56.3 % to 49.3 %. Notably, upon treatment of simulated salt lake brine, the membrane manifested a pronounced Li + enrichment effect, with a LiCl rejection rate of −8.8 % while retaining a high MgCl 2 rejection capacity. This study employed a simple preparation process with industrialization potential, providing a guiding strategy for constructing high-selectivity membranes for Mg 2+ /Li + separation.
研究领域:
材料科学
·
膜科学与技术
·
分离工程
·
能源材料
·
无机非金属材料
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2024
·Vol. 16
·期 29
·14108-14115
·
IF 5.8
Jiaying Zheng,Jiwei Ma,Minghuai Yu,Hao Xie,Dongdong Yan,Yihong Dong,Yi Liu,Xiaoyu Wang,Weixiang Ye
Inorganic CsPbI3 perovskite nanocrystals (NCs) exhibit remarkable optoelectronic properties for illumination. However, their poor stability has hindered the development of light-emitting diodes (LEDs) based on these materials. In this study, we propose a facile method to synthesize Mg2+-doped CsPbI3 NCs with enhanced stability and high photoluminescence (PL) intensity under ambient air conditions. Theoretical calculations confirm that doped NCs possess stronger formation energy compared to undoped NCs. The undoped CsPbI3 NCs emit red light at approximately 653 nm. We optimize the doping ratio to 1/30, which significantly enhances the photoluminescence of single-particle CsPbI3 NCs. Subsequently, we fabricate a red LED by combining the CsPbI3 NCs with a blue chip. The resulting LED, based on the doped CsPbI3 NCs, exhibits excellent performance with a high luminance of 4902.22 cd m−2 and stable color coordinates of (0.7, 0.27). This work not only presents a simple process for synthesizing perovskite NCs but also provides a design strategy for developing novel red LEDs for various applications.
研究领域:
材料科学
·
光电技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2025
·
IF 9.8
Jiyue Wang,Yang Xu,Qi Zhang,Qiang Zhao,Zhitian Liu
Surface modification is an effective strategy to improve separation performance of Mg 2+ /Li + nanofiltration membranes, but less is known about how chemical structures of modification molecules affect separation performances of resultant membranes. In this work, three types of quaternary ammonium salts with modulated structures were designed to modify polyethyleneimine-trimesoyl chloride (PEI-TMC) membranes. The surface and cross-section morphologies, mean pore sizes, charge and hydrophilicity properties of the modified membranes were characterized. These quaternary ammonium salts can tune membrane properties effectively, and impart good separation performance to modified membranes. Molecular structures of quaternary ammonium salts affect the diffusion of the monomer into the organic phase and the reactivity with the acyl chloride. The flux of modified membranes are 99.6 Lm −2 h −1 , 112.2 Lm −2 h −1 , and 128.8 Lm −2 h −1 , and the rejection of MgCl 2 are 93.2 %, 94.9 %, and 92.8 %, respectively. The modified membranes also show good retention for heavy metal ions (e.g., Cu 2+ , Cr 3+ , Zn 2+ , Co 2+ , and Ni 2+ ).
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Jingjun Wang,Hao Zhang,Rukang Tian,Huiyan Shen,Wei-Hua Li,Yunkun Wang
The increasing demand for lithium resources in the rapidly growing new energy industry has spurred interest in efficient lithium extraction from salt-lakes using Nanofiltration membranes, owing to their impressive ionic rejection capabilities. However, achieving effective Mg 2+ /Li + selective separation remains a critical challenge for the widespread application of NF membranes in lithium extraction. This study focuses on the utilization of poly(dimethyldiallylammonium chloride)-modified polyethersulfone substrate for interfacial polymerization modulation in the preparation of polyamide nanofiltration membrane. The prepared membrane exhibited high MgCl 2 rejection. And then the prepared membrane was subsequently optimized by post-modification with piperazine. Previous and subsequent modifications resulted in smaller pores, narrower pore size distribution, and lower surface negativity of the modified membrane. These properties contributed to the significantly higher MgCl 2 rejection rate of the modified membrane (94.7%) than that of the Control membrane (46.1%). This excellent rejection property ensured the efficient Mg 2+ /Li + separation performance of the modified membrane. It was noteworthy that the Mg 2+ /Li + separation factor for lithium extraction in simulated brine reached an impressive 77.2. In addition, the modified membrane retained a comparable pure water permeance and Na 2 SO 4 rejection rate as the control membrane and showed excellent stability, significantly improving the Mg 2+ /Li + separation efficiency while reducing energy consumption. This study presents a simple strategy to fabricate NF membranes with excellent Mg 2+ /Li + separation factor.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Ping Li,Yuan Zhou,Chunxi Hai,Ying Cheng,Yu Tang,Yanxia Sun,Shengde Dong,Luxiang Ma,Xin He,Qi Xu
Nanofiltration (NF) membranes prepared by traditional interface polymerization (IP) have garnered widespread attention for Mg 2+ /Li + separation. However, traditional NF membranes, like thin film composite polyamide (PA) membranes, show inadequate selectivity and permeance. The regulation of monomer diffusion plays a crucial role in adjusting the structure of nanofiltration membranes and improving their separation performance. In this study, we introduced the co-solvent N , N -dimethylformamide (DMF) into the aqueous phase to efficiently modulate the IP process of polyethyleneimine (PEI) and Trimesoyl chloride (TMC) without additional steps. The DMF-induced activation of the PA layer resulted in a more uniform pore structure across the layers, and the optimized membrane (CAIP (4)) had a pure water permeance of 13.10 ± 1.01 L/m 2 hbar, which was approximately three times that of conventional nanofiltration membranes. Molecular dynamics (MD) simulations indicated that the co-solvent DMF reduced the surface tension and accelerated the diffusion rate of PEI monomers, which diffused through the pores of the PA layer to leave more unreacted positively charged amine groups on the membrane surface. Consequently, the membrane achieved efficient separation of magnesium and lithium while maintaining good water permeance. The MgCl 2 removal was 95.09 % ± 1.65 %, and the Li + /Mg 2+ selectivity was 21.05. This study elucidates the mechanisms by which aqueous cosolvents influence IP reactions and offers novel strategies for modulating membrane structures and separation characteristics. These advancements are crucial for enhancing the efficiency of magnesium‑lithium separation processes.
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Yang Zhao,Tao Wu,Yanliang Wang,Zimo Feng,Lijuan Cheng,Yu Zheng,Hui Wang,Kai Xu,Runnan Zhang,Zhongyi Jiang
Increasing the positive charge density (PCD) of nanofiltration (NF) membranes is crucial to acquiring the high selectivity of Li + /Mg 2+ separation and remains extensive exploitation. Herein, a novel modifier (1-methyl hydrazide-3,5-dibenzyl trimethyl ammonium bromide, MDTAB) containing two quaternary ammonium groups and an amino group was designed and synthesized, which was grafted onto the polyamide NF membrane surface. The surface PCD of the MDTAB modified membrane (+7.02 mC m −2 ) was almost four times that of the unmodified membrane, which is the highest among the existing positively charged NF membranes. The MDTAB modified membrane acquired MgCl 2 rejection as high as 99.3 %, and the pure water permeance was 15.92 L·m −2 ·h −1 ·bar −1 . When utilized for Li + /Mg 2+ separation, the Mg 2+ /Li + mass ratio was reduced from the original 100 to 1.73. This strategy may provide valuable guidance for the rational design of the positively charged membrane in salt lake lithium extraction applications.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Yunhao Li,Wu Kuang,Haijun Yu,Dandan Liu,Yanfang Liu,Guodong Kang,Xinmiao Liang,Yiming Cao
Efficient separation of monovalent/multivalent cations and anions is essential for optimizing lithium extraction from Salt-Lake to simplify production processes and reduces costs. Nevertheless, the conventional nanofiltration membranes with specific charges can only separate either cations or anions. To overcome this limitation, a novel strategy is proposed for fabricating nanofiltration membranes with “negative-positive-negative” sandwich-like mixed charge configuration. Herein, two aqueous monomers (phenylbiguanide and polyethyleneimine) with significantly different diffusion rates are employed to react with trimesoyl chloride to form a nascent polyamide layer via interfacial polymerization. Subsequently, phenylbiguanide that preferentially diffuses to top surface of nascent membrane and unreacted amine groups from polyethyleneimine are used to react with m -phenylenedisulfonyl chloride to form a polysulfonamide/polyamide functional layer. The unreacted sulfonyl chloride groups and trimesoyl chloride near aqueous phase could hydrolyzes more easily, producing negatively charged sulfonic acid and carboxyl groups on the top and bottom. Meanwhile, the main part of polyamide layer is positively charged attributed to numerous unreacted amine groups. The “negative-positive-negative” sandwich-like configuration was proven using TOF-SIMS. The fabricated membrane exhibited a selectivity of 57.22 for MgCl 2 /LiCl and 30.61 for Na 2 SO 4 /NaCl. Furthermore, Mg 2+ /Li + selectivity of 57.34 was achived for the mixed salt solution (Mg 2+ /Li + = 45), showing good application potential in lithium extraction.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 9
Youran Xu,Rukang Tian,Hao Zhang,Xiaowen Wu,Yunkun Wang
The transition to renewable energy and the pursuit of carbon neutrality have heightened the demand for lithium extraction from salt lake brines to ensure a sufficient lithium supply. Nanofiltration (NF) membranes offer an efficient method for solute sieving; however, achieving highly selective Mg 2+ /Li + separation remains challenging due to their similar hydration radii. This study introduces a synergistic modification strategy to adjust the surface physicochemical properties of NF membranes through incorporation of a sodium alginate interlayer and post-treatment with piperazine. The resulting modifications improved Mg 2+ selectivity by optimizing steric and Donnan exclusion mechanisms, achieved through a refined pore size distribution and reduced surface negative potential. Consequently, the modified membrane exhibited an outstanding Mg/Li selectivity factor (>100), with Mg 2+ rejection efficiency exceeding 98%. The membrane also demonstrated stable performance under mixed feed conditions with high total dissolved solids (TDS, 2000 ppm) and low Li + concentration (100 MgCl 2 /LiCl mass ratio). This study provides a facile and effective approach to enhance multiple exclusion mechanisms for Mg 2+ separation, offering valuable insights into the design and fabrication of advanced NF membranes for efficient Mg/Li separation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Ming-Bang Wu,Hao Ye,Zhi-Yuan Zhu,Guo-Tao Chen,Lu-Lin Ma,Shi-Cheng Liu,Lin Liu,Juming Yao,Zhi-Kang Xu
Nanofiltration (NF) shows great application potentials in selectively recovering lithium (Li) from natural brine to meet the rapidly growing demands in lithium-ion batteries. However, it remains challenges in how to fabricate positively-charged NF membranes via a convenient method since conventional polyamide-based NF membranes are negatively-charged, which exhibit undesirable Mg 2+ /Li + selectivity according to the Donnan and electrostatic effects. Herein, we report a new kind of interfacial polymerization (IP) for preparing positively-charged NF membranes at the gas/liquid (GL) interface by replacing the amine solution with amine gas. Compared with the traditional liquid/liquid interfacial polymerization (LLIP), the amine monomers are always more abundant than the acyl chloride monomers during the GLIP process. Therefore, enough amino groups are desirably remained, resulting in positively-charged polyamide-based layers. In addition, the surface charges as well as the average pore sizes of the polyamide-based layers can be facilely adjusted by the reaction time due to the slow reaction kinetics in the GLIP process. The as-prepared NF membranes show a relatively high rejection for MgCl 2 of 98.5% and low rejection for LiCl of 22.6%, demonstrating their excellent Mg 2+ /Li + selectivity. Moreover, the NF membranes can also maintain the high Mg 2+ /Li + separation factors as high as 28 during a long-term operation.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Biomimetics
·
2022
·Vol. 7
·期 4
·227
·
IF 3.743
Zhengqiang Li,Xiaoxue Zheng,Yixing Wang,Tianyi Tao,Zilin Wang,Long Yuan,Bing Han
With the increase in population aging, the tendency of osteochondral injury will be accelerated, and repairing materials are increasingly needed for the optimization of the regenerative processes in bone and cartilage recovery. The local environment of the injury sites and the deficiency of Mg2+retards the repairing period via inhibiting the progenitor osteogenesis and chondrogenesis cells’ recruitment, proliferation, and differentiation, which results in the sluggish progress in the osteochondral repairing materials design. In this article, we elucidate the Mg2+-concentration specified effect on the cell proliferation, osteochondral gene expression, and differentiation of modeling chondrocytes (extracted from New Zealand white rabbit) and osteoblasts (MC3T3-E1). The concentration of Mg2+in the culture medium affects the proliferation, chondrogenesis, and osteogenesis: (i) Appropriate concentrations of Mg2+promote the proliferation of chondrocytes (1.25–10.0 mM) and MC3T3-E1 cells (2.5–30.0 mM); (ii) the optimal concentration of Mg2+that promotes the gene expression of noncalcified cartilage is 15 mM, calcified cartilage 10 mM, and subchondral bone 5 mM, respectively; (iii) overdosed Mg2+leads to the inhibition of cell activity for either chondrocytes (>20 mM) or osteoblasts (>30 mM). The biomimetic elucidation for orchestrating the allocation of gradient concentration of Mg2+in accordance of the physiological condition is crucial for designing the accurate microenvironment in osteochondral injury defects for optimization of bone and cartilage repairing materials in the future.Keywords:magnesium;chondrogenesis;osteogenesis;osteochondral defect;osteochondral unit
研究领域:
生物材料
·
再生医学
·
生物力学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）