DESALINATION
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2025
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IF 9.8
Zhangfa Yu,Panmin Yang,Chunxi Hai,Xuequn Li,Hongbo Sun,Yuan Zhou,Longgang Li,Xudong Yu,Wanghai He,Ying Zeng
Li 1.6 Mn 1.6 O 4 -type adsorbents show significant promise for lithium resource extraction from complex saline lakes due to their exceptional selectivity and high theoretical adsorption capacity of 72.3 mg g −1 . However, their practical application is markedly constrained by rapid manganese dissolution during elution with dilute HCl, primarily attributed to Jahn-Teller effect-induced Mn O structural distortion. To address this limitation, a synergistic S 2− /Na + co-doping strategy was employed: Na + stabilizes the spinel structure via Na O bond formation, while S 2− doping enhances charge density. In situ XRD analysis elucidated the structural evolution of the doped material. Experimental results demonstrate that H 1.6 Mn 1.6 O 4 modified with 1 % Na 2 S achieves an adsorption capacity of 39.6 mg g −1 in 300 ppm LiOH solution, with manganese dissolution loss below 2 %, and attains a single-pass lithium extraction efficiency of 99.5 % from oilfield brine containing 100 ppm Li + . Furthermore, the influence of Na + concentration on Li + adsorption selectivity was investigated for the first time, and the underlying mechanism was summarized. This finding is highly significant for efficient lithium extraction from various brines.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Dangfeng Wang,Yifan Hou,Likun Ren,Yang Jiang,Yuqiong Meng,Rui Ma,Shulin Wang,Zhiteng Liu,Xuepeng Li,Fangchao Cui,Tingting Li,Jianrong Li
Annually, up to 25 % of food globally spoils due to microbial pollution. Traditional antibacterial nanomaterials had issues like high dosage, lacked of catalytic activity, and instability. Therefore, Na/N-doping carbon dots nanozymes (Na/N-CDs nanozymes) was developed to fight spoilage organisms. The structural stability of Na/N-CDs nanozymes was enhanced due to the change of lattice structure. Na/N-doping with the peroxidase-mimetic activity was 4.3 times higher than reported HRP activity. It showed strong antimicrobial activity by catalyzing H₂O₂ into ROS, with a MIC of 0.03 mg·mL −1 . And the catalytic activity was over 32 times higher than precursor substances. In contrast, Fe and Cu-doping CDs with a MIC of 0.5 mg·mL −1 had no nanozyme activity. The results of antibacterial and spoilage assays showed that Na/N-CDs nanozymes antibacteria by damaging cell membranes, degrading DNA, and inhibiting key enzymes, thereby extending the shelf life of salmon fillets by 3 days, indicating potential in aquatic product preservation.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yan Meng,Yuanheng Wang,Qingjiang Liu,Xingyu Chen,Enhui Wang,Weihua Chen,Hongji Pan,Jinghao Zhao,Xin Li,Jia-Yan Liang
Local high concentration electrolytes (LHCEs) have great potential for sodium-ion batteries (SIBs) owing to their anion-enriched solvation structures that facilitate the formation of inorganic-rich solid electrolyte interphases (SEIs). However, insufficient solvent-cation interactions in solvation structure inherently lead to limited ion migration kinetics and compromised electrolyte thermodynamics. Here, we report a novel LHCE design employing methyl 2,2,2-trifluoroethyl ester (FEMC) as a functional diluent. The dipole-dipole interaction between FEMC and ethylene carbonate (EC) induces the electrons polarization of fluorine atoms toward carbonyl group in FEMC, thereby strengthening the coordination ability of FEMC. The solvation structure, maintaining more anion participation, with enhanced FEMC diluent coordination significantly improves ion migration kinetics and derives a stable inorganic-rich (NaF/Na x PO y ) SEI, effectively mitigating cell interfacial concentration polarization. This reconfigured LHCE enables hard carbon (HC) anode to deliver a remarkable specific capacity of 287.00 mAh g −1 with 80.1 % capacity retention over 1000 cycles under 0.1 A g −1 and achieve extraordinary cycling stability over a wide temperature range. This work provides a new insight into designing electrolyte solvation structure via intermolecular dipole-dipole interactions.
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JOURNAL OF MASS SPECTROMETRY
·
2015
·Vol. 50
·期 1
·212-219
·
IF 2.379
Huixin Wang,Bing Wang,Zhonglin Wei,Hao Zhang,Xinhua Guo
A good understanding of gas-phase fragmentation chemistry of peptides is important for accurate protein identification. Additional product ions obtained by sodiated peptides can provide useful sequence information supplementary to protonated peptides and improve protein identification. In this work, we first demonstrate that the sodiated a 3 ions are abundant in the tandem mass spectra of sodium-cationized peptides although observations of a 3 ions have rarely been reported in protonated peptides. Quantum chemical calculations combined with tandem mass spectrometry are used to investigate this phenomenon by using a model tetrapeptide GGAG. Our results reveal that the most stable [a 3 + Na − H] + ion is present as a bidentate linear structure in which the sodium cation coordinates to the two backbone carbonyl oxygen atoms. Due to structural inflexibility, further fragmentation of the [a 3 + Na − H] + ion needs to overcome several relatively high energetic barriers to form [b 2 + Na − H] + ion with a diketopiperazine structure. As a result, low abundance of [b 2 + Na − H] + ion is detected at relatively high collision energy. In addition, our computational data also indicate that the common oxazolone pathway to generate [b 2 + Na − H] + from the [a 3 + Na − H] + ion is unlikely. The present work provides a mechanistic insight into how a sodium ion affects the fragmentation behaviors of peptides. Copyright © 2015 John Wiley & Sons, Ltd.
研究领域:
生物化学
·
质谱分析
·
理论化学
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Food Packaging and Shelf Life
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2022
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IF 8.749
Yingping Lai,Weitong Wang,Jiajia Zhao,Song Tu,Yingwu Yin,Liyi Ye
This work aims to develop degradable packaging films based on chitosan (CS) and Na-montmorillonite (MMT). The effect of citric acid (CA) on the properties of prepared films (MCS/CAs) was also investigated. MMT shows excellent compatibility in CS. Results from Fourier transform infrared spectroscopy , scanning electron microscopy , and thermogravimetric analysis indicated an improvement in the structural and thermal properties of the films after incorporating MMT into the CS matrix. Despite the reduced tensile strength , the composite films with CA loaded exhibited better swelling resistance and higher elongation at break (68%). MCS/CA-c (loaded with 80% CA) was employed to package cherry tomatoes so as to improve its conservation. Results showed improved physical/chemical properties (weight loss ratio, total soluble solids, titratable acidity, and ascorbic acid) of wrapped cherry tomatoes. Therefore, results reveal the potential of MCS/CAs films as degradable packaging material .
研究领域:
食品科学
·
材料科学
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ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Liang Lu,Hao Yuan,Chunwen Sun,Bingsuo Zou
Low-cost sodium metal batteries are expected to be used as an effective supplement to lithium-ion batteries in the energy storage field in the future, and have made great progress in recent years. However, the safety issues caused by Na dendrites and the relatively low specific capacity of sodium metal batteries are obstacles to their further commercialization. In this work, a thin Na-Ti 3 C 2 T x composite anode was prepared. The thickness of the composite anode Na-Ti 3 C 2 T x is only 46% of that of pure sodium, greatly reducing costs and increasing energy density. In addition, the nucleation overpotential of Na-Ti 3 C 2 T x is 55.2% and 56% that of Na at 0.5 mA cm −2 and 2 mA cm −2 respectively, which indicates that the composite anode reduces the sodium nucleation barrier and is favorable for sodium deposition. Furthermore, the poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and Na 3 Zr 2 Si 2 PO 12 modified polyimide membrane significantly enhances the mechanical strength and sodium ion migration and promoted the deposition and stripping of metallic sodium. The sodium battery with the composite metal sodium anode and PVDF-HFP-Na 3 Zr 2 Si 2 PO 12 modified polyimide membrane has a specific discharge capacity of 87.9 mAh g −1 , and the capacity retention rate is close to 100% without significant fluctuation after 500 cycles.
研究领域:
材料科学
·
电化学
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Nature Communications
·
2021
·Vol. 12
·期 1
·1-10
·
IF 14.919
Shen Xing,Zhou Quan,Han Miao,Qi Xingguo,Li Bo,Zhang Qiangqiang,Zhao Junmei,Yang Chao,Liu Huizhou,Hu Yong-Sheng
Na-ion batteries have been considered promising candidates for stationary energy storage. However, their wide application is hindered by issues such as high cost and insufficient electrochemical performance, particularly for cathode materials. Here, we report a solvent-free mechanochemical protocol for the in-situ fabrication of sodium vanadium fluorophosphates. Benefiting from the nano-crystallization features and extra Na-storage sites achieved in the synthesis process, the as-prepared carbon-coated Na 3 (VOPO 4 ) 2 F nanocomposite exhibits capacity of 142 mAh g −1 at 0.1C, higher than its theoretical capacity (130 mAh g −1 ). Moreover, a scaled synthesis with 2 kg of product was conducted and 26650-prototype cells were demonstrated to proof the electrochemical performance. We expect our findings to mark an important step in the industrial application of sodium vanadium fluorophosphates for Na-ion batteries.
研究领域:
材料科学
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电化学
·
储能技术
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Ke Wang,Chuanjiang Yang,Pengfei Zhao,Edward J. Anthony
The addition of molten Na 2 CO 3 can drastically accelerated the extremely slow sorption kinetics of Li 4 SiO 4 -based CO 2 sorbents in the sorption enhanced reforming process. However, the lack of a unified consensus about the effect of doped Na 2 CO 3 on the CO 2 capture process, now delays the development of more-effective Li 4 SiO 4 sorbents. Here, sorption tests, sturactural characterzations and periodic density functional theory calculations were combined to develop a better mechanistic understanding CO 2 sorption on Na-doped Li 4 SiO 4 . The Na-doped Li 4 SiO 4 exhibited a better CO 2 capture performance than pure Li 4 SiO 4 even below the melting point of any eutectic mixtures. Structural characterizations revealed that rather than generating physical favorable characteristics, the Na doping substituted at the Li site and created lithium–sodium orthosilicates (Li 4-x Na x SiO 4 ). Theoretical calculations agreeing with experimental results further demonstrated that Li 4-x Na x SiO 4 presented a weaker Na-O bond and generated more active phases (quasi Li 2 O groups) for larger sorption energies, more charge transfers and stronger CO 3 2– bond formation, in turn providing more reactive sites for enhanced CO 2 chemisorption as comparing with pure Li 4 SiO 4 . Finally, we propose a new and unified sorption mechanism independent of the traditional “melting layer” explanation.
研究领域:
材料科学
·
化学工程
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Energy Material Advances
·
2026
·
IF 17.4
Xinyue Min,Xinli Huang,Jing Gao,Jinfeng Sun,Xiaohang Lin,Guangbin Duan,Chengxiang Wang,Zhiwei Zhang,Longwei Yin,Rutao Wang
Lead (Pb), with low average discharge plateau, large volumetric capacity, low cost (2000USD/MT) and high recycling rate (99%), is deemed as an optimal anode for sodium-ionbatteries/capacitors. However, several issues including short cycling life and poor ratecapability, stemming from amazing volume expansion (over 486%) and insulatingintermediates of Pb44- based “Zintl phases” during the sodiation, hinder the wide use of Pb.Herein, amorphous carbon coated discrete Pb nanocrystals (Pb@C) with highly porousstructure are prepared by sintering a compacted mixture composed of polyvinylpyrrolidone and lead citrate. This Pb@C nanocomposite achieves high levels of Na+storage with the robust rate capability and cycling stability. Furthermore, a sodium-ioncapacitor based on this Pb@C anode possesses the merits of high energy/power outputsand durable cycling life (> 12,000 cycles). The principal benefit arises from Pb-embeddedporous carbon structure with the functions of the increased electron connectivity, buffered2volume expansion and shortened Na+ diffusion path/barrier as confirmed by the theoreticalsimulations and in-situ/ex-situ structural analyses.Keywords: Sodium-ion capacitor; Pb anode; Alloying reaction; Na+ storage mechanism Composite
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JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Yang Chen,Feng Li,Zhenyu Guo,Ziqing Song,Yueying Lin,Wei Lin,Lituo Zheng,Zhigao Huang,Zhensheng Hong,Maria-Magdalena Titirici
Sustainable and green manufacturing of hard carbon (HC) material in a low-cost way is the key issue in promoting its industrial applications in Na-ion batteries (SIB). Nowadays, most synthesis ways to prepare HC need the help of chemical reagents to improve its Na-ion storage performance. Herein, we firstly developed a completely green biological fermentation technology to prepare HCs on a large scale using cheap and renewable carbon sources of various biomass starch. Pre-treatment by bio-fermentation can effectively modify the carbon precursor for facile pyrolysis to fabricate starch-based HCs, and make its internal microstructure with larger interlayer spacing, more disordered structure and abundant closed micropores. Finally, a case of cornstarch-based hard carbon exhibits a high reversible capacity of 335 mA h g −1 at a current density of 30 mA h g −1 and high rate performance with a reversible capacity of 140.6 mA h g −1 even at a high current of 5 A g −1 as well as long cycling stability. In-situ Raman spectra , ex-situ SAXS and ex-situ XPS tests during discharge and charge process reveal the pore filling mechanism of quasi-metallic Na in hard carbon anode. Such a “bread-making”strategy is a facile and scalable route to fabricate various starch-based hard carbons with improved performance, demonstrating a very practically promising application for industrial manufacture.
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FUEL
·
2023
·
IF 7.4
Xiaojian Wei,Yong Zhang,Hongzheng Zhu,Ming Yang,Jinbo Zhu
Using a high-speed motion acquisition system, the dodecane droplet size and the interface energy of the dodecane-solution interface during the collision between the dodecane droplet and the dodecane layer at different Na + concentrations were studied. The collision process is divided into three stages: Contact stage , Stretch stage and Attenuation amplitude stage . The size of the dodecane droplet gradually decreases as the Na + concentration increases, and the stretching time does too. The kinetic energy of the dodecane droplet, the surface energy of the dodecane-solution interface, and the net force of the dodecane droplet all decrease with an increase in Na + concentration, but the dodecane droplet rate of energy dissipation increases. The effect of Na + concentration on dodecane-solution interfacial tension is the main reason for the collision difference. The Na + added to the solution forms a hydration shell around it, weakening the interaction between water molecules at the dodecane-solution interface and within the solution, leading to reduced interfacial tension. The advancement of mineral flotation technology may benefit greatly from these findings.
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JOURNAL OF MOLECULAR LIQUIDS
·
2018
·
IF 4.513
Canghao Ni,Changqing Sun,Zhaofeng Zhou,Yongli Huang,Xinjuan Liu
Overdosing of Na(Cl, C 5 H 8 NO 4 ) can raise one's blood pressure but moderately intaking of C 6 H 8 O 6 ascorbic and C 2 H 4 O 2 acetic acids effects contrastingly with mechanisms yet to be clear. From the perspective of hydrogen bond (O:H O or HB with “:” being electron lone pairs of oxygen) cooperativity, we show phonon-spectrometrically that solvation of the Na-based doses raises their solution surface tension by ionic polarization, but solvation of the organic acids performs contrastingly by dipolar fragilization. The Na-based doses dissolve into Na + cations and anions that serve each as a charge center to cluster, stretch, and polarize the solvent O:H O bonds, raising the viscosity of the solution. However, the acidic dipoles break the solvation network into small fragments, helping to the blood flowing. Findings could offer workable mechanisms for hypertension medication and prevention.
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