DESALINATION
·
2025
·
IF 9.8
Hailin Chang,Shilei Fu,Ziao Zhang,Yating Hu,Zijian Cui,Jun Ma,Kexin Hou,Xiaobin Tang,Guibai Li,Heng Liang
Nanofiltration (NF) membranes with efficient selectivity are critical for addressing water source pollution from toxic heavy metals and emerging micropollutants. Herein, we engineered a polyamide (PA) NF membrane with ambidextrous selectivity by leveraging the concentration-driven effect of piperazine (PIP) during interfacial polymerization (IP). This PIP concentration-driven effect was verified by modulating the PIP concentration gradient from low to high, which enhanced IP efficiency via both an intensified alkaline reaction environment and concentration-driven diffusion. The optimized NF membrane features an ultrafine pore size distribution and reduced electronegativity, exhibiting a remarkable shift from sole SO 4 2− /Cl − selectivity to impressive ambidextrous selectivity, encompassing both SO 4 2− /Cl − (α ≈ 48, 98.3 % for Na 2 SO 4 ) and Mg 2+ /Na + (α ≈ 37, 98.2 % for MgCl 2 ). Moreover, it membrane also achieved exceptional removal efficiencies of 94.8–98.9 % for heavy metals and 77.6–99.3 % for antibiotics, while maintaining a water permeability of 19.3 L/m 2 h bar and mitigating the perm-selectivity trade-off. When purifying surface water containing heavy metals and antibiotics, the optimized NF membrane exhibited superior multi-pollutant removal and improved water production quality compared to the NF270 and NF90 membranes, and especially with its water permeance increased by ~27 % to 179 %. Our work uncovers a fundamental correlation between the PIP concentration, IP reaction, PA nanostructures and NF performance, providing valuable insights into customizing high-performance NF membranes to address complex water pollution challenges.
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高影响因子
RSC Advances
·
2025
·Vol. 15
·期 42
·35068-35076
·
IF 4.6
Xu Han,Haozhen Li,Ling Niu
This study introduces a novel electrochemical aptasensor designed for the sensitive detection of lactate in athlete sweat. The sensor is based on a PEI-rGO-modified SPCE coupled with AuPt NPs, and utilizes Na+-assisted DNAzyme for signal amplification. The PEI-rGO modification enhances the aptasensor's conductivity, while the AuPt NPs efficiently load MB and LDNA, generating stable electrochemical signals. Furthermore, the Na+-dependent DNAzyme leverages the Na+ naturally present in sweat to activate the cleavage process, amplifying the detection signal. The sensor exhibits a strong linear relationship between current response and lactate concentration in the range of 5 × 10−3 to 10 mM, with a limit of detection (LOD) of 2.974 μM. It demonstrates excellent specificity, stability, and repeatability. The optimized aptasensor offers significant potential for real-time, non-invasive lactate monitoring, particularly in athletic performance and health assessment. This work provides a promising approach for the development of reliable, portable biosensors for tracking lactate metabolism, with implications for sports science and health management.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Feng Li,Yuhang Tian,Yanyun Sun,Peiyu Hou,Xianqi Wei,Xijin Xu
High-voltage and low-cost manganese-based P 2-type oxides show real promise as promising cathode for sodium-ion batteries (SIBs). But the P 2 − O2 phase transformation and Na + /vacancy ordering results in the inferior structural stability and Na + diffusion coefficient , which further leads to rapid decay of capacity and poor rate capability. Herein, in consideration of the synergetic effects of dual cationic doping, electrochemically inactive Li + and active Co 3+ codoping are proposed to solve the above issues. The novel two-step doping strategy, Co doping during synthesis of precursors via coprecipitation reaction followed by Li doping during solid-state reaction, are rationally developed. As anticipated, the Li/Co codoped P 2-type oxide exhibits the absence of P 2 − O2 phase transformation and Na + /vacancy disordering, which gives rise to an outstanding cycling stability (86.7% capacity retention within 100 cycles at 0.1C) and high-rate capability (reversible capacity of 109 mAh g −1 even at 10C). In addition, the full-cells composed of the codoped P 2-type positive and hard carbon negative show high energy-density, good lifespan and high-rate property. This proposed cationic codoping provides an effective and scalable tactics for modulating the structural properties of high-voltage P 2-type cathodes for advanced SIBs.
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高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 5
·期 9
·4359-4367
·
IF 8.262
Yong Li,Shuan Wang,Yan-Bing He,Linkai Tang,Yusuf Valentino Kaneti,Wei Lv,Zhiqun Lin,Baohua Li,Quan-Hong Yang,Feiyu Kang
Titanium oxide (TiO2) has attracted great interest as a promising anode material for lithium (Li) ion batteries (LIBs) and sodium (Na) ion batteries (SIBs). However, the key factors that dictate the Li-ion and Na-ion storage and transportation in TiO2 remain unclear. Herein, we report a facile hydrolysis route to crafting a variety of high tap-density TiO2 spheres with controllable size and hierarchical pores. The Li-ion and Na-ion storage properties based on these TiO2 spheres were systematically investigated. The pore distribution and the size of TiO2 spheres were found to exert profound influence on the Li-ion and Na-ion storage and transportation. The Li-ion storage and transportation in dense TiO2 spheres was dependent mainly upon the micropore distribution and volume and independent of the size of spheres. In contrast, the excellent Na-ion storage and transportation in TiO2 spheres was enabled by the loose structure with a large macroscopic pore volume and shortened Na-ion diffusion length. High tap-density TiO2 spheres (1.06 g cm−3) with superior Li-ion and Na-ion storage properties were produced, exhibiting a Li-ion storage specific capacity of 189 mA h g−1 at 1C and a high capacity retention of 88.1% after 100 cycles, and a Na-ion storage specific capacity of 184 mA h g−1 at 1C and capacity retention of 90.5% after 200 cycles. The ability to understand the critical factors controlling the Li-ion and Na-ion storage in high tap-density TiO2 spheres enables their implementation for practical applications in Li-ion and Na-ion batteries.
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高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 9
·3472-3484
·
IF 4.569
Lei Xu,Zhipeng Gong,Yinglin Qiu,Wenbo Wu,Zunxian Yang,Bingqing Ye,Yuliang Ye,Zhiming Cheng,Songwei Ye,Zihong Shen,Yuanqing Zhou,Qiaocan Huang,Zeqian Hong,Zongyi Meng,Zhiwei Zeng,Hongyi Hong,Qianting Lan,Tailiang Guo,Sheng Xu
Metal sulfides, one kind of electrode material with very high theoretical capacity, have been widely studied for use in lithium and sodium ion batteries. However, there are some problems hindering their applications in electrodes, such as low conductivity and volume expansion. The MOF introduces metals with different coordination strengths into an existing MOF structure, which improves the performance of the electrode to a certain extent. In this paper, Fe/Zn bimetallic MOF rod-like superstructure was prepared based on Ostwald theory. Accompanied by sulfuration, the MOF was effectively combined with MoS2 and GO, and the objective materials Fe7S8-C/ZnS-C@MoS2/rGO composites were successfully prepared. The MOF material provides a good frame and an efficient electron transport path, while the robust rGO wall effectively inhibits the pulverization of materials during the lithium/sodium intercalation/escalation courses. This particular material exhibited excellent cycling and rate capability performance when used in Li/Na-ion batteries. When used in Li-batteries, the electrode material delivered a specific capacity of 1598.3 mA h g−1 at 0.1 A g−1 and remained at 1196.7 mA h g−1 even after about 100 cycles and further exhibited a specific capacity of 368.68 mA h g−1 at the current rate of 5 A g−1 even after 1000 cycles, respectively. As for sodium batteries, these electrode materials exhibited an initial reversible capacity of 1053.6 mA h g−1 at 0.1 A g−1 and the reversible capacity was still as high as 592.2 mA h g−1 after 200 cycles. It is perhaps that this composite material with its particular architecture and composition is greatly beneficial for electron transfer and Li/Na ion diffusion. In the repeated physicochemical/nutrifying process, the appropriate distance between adjacent MOFs is of great help in preventing volume changes and thus improving the electrochemical performance.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Geliang Dai,Yixin Zhou,Zeqi Liu,Jialin Liu,Kaixiang Tan,Lijian Xu,Yi Chen,Jingjing Du,Aokui Sun
To overcome critical challenges in flexible aqueous zinc-ion batteries (AZIBs)—specifically zinc dendrite proliferation, recurrent side reactions, and electrolyte mechanical-electrochemical incompatibility—we engineered a hydrogel electrolyte (PZEC). Synthesized in one step, PZEC integrates polyacrylamide (PAM)/ZnSO₄ with synergistic enhancements from ethylene glycol (EG)-based deep eutectic solvent (DES) and sodium carboxymethyl cellulose (CMC Na). A synergistic multi-component modification strategy reconstructing the hydrogen bond network yielded concurrent, major gains in mechanical strength and electrochemical stability. Hydrogen bond deconvolution analysis revealed a 3.1 % increase in strong hydrogen bonds within PZEC, accompanied by a significant reduction in the phase transition temperature to −29.46 °C, indicative of enhanced bound water confinement and low-temperature adaptability. PZEC manifests excellent mechanical properties (90 kPa fracture stress, 1280 % elongation) while attaining high ionic conductivity (29.26 mS·cm −1 ) and zinc ion transference number (0.63) via zinc solvation sheath compression and guided ion transport. The Zn//Zn symmetric battery exhibited exceptional cycling endurance, operating for 700 h at 5 mA·cm −2 and over 2000 h at 0.5 mA·cm −2 . Notably, PZEC maintained superior rate performance and cycling stability at 0 °C, retaining high reversible capacity and near-100 % coulombic efficiency (CE) even under high-rate conditions. Consequently, this work outlines a new methodology for high-performance flexible AZIBs and delivers significant insights for hydrogen bond-functionalized electrolyte engineering.
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高影响因子
ChemSusChem
·
2023
·Vol. 16
·期 15
·e202300244
·
IF 8.4
Shuai Tong,Hui Pan,Hang Liu,Xiaoyu Zhang,Xiangyu Liu,Min Jia,Yahao Kang,Yong Yuan,Xinyi Du,Xiaohong Yan
Graphical The improvement of the energy density of Na 3 V 2 (PO 4 ) 2 F 3 (NVPF) is now related to the utilization of the third Na + , which was reported to be electrochemically inaccessible. Our research revealed that Ti-doped Na 3 V 2 (PO 4 ) 2 F 3 (NVTPF) could be overcharged at approximately 4.9 V without forming the irreversible metastable phase, which means the electrochemical inactive Na + could be effectively attracted without affecting the subsequent electrochemical behavior. Polyanionic material, specifically the NASICON-type material, is considered a promising cathode material for Na-ion batteries (SIBs) because of its stable structure and high operating voltage. Further, it improves the energy density correlated with the well utilization of all Na in the compound. For Na 3 V 2 (PO 4 ) 2 F 3 (NVPF), the extraction of the third Na, reported as the electrochemical inactivated, can be realized at a high voltage region while forming an irreversible tetragonal phase. In this study, we introduce Ti doping to the Na 2 VTi(PO 4 ) 2 F 3 (NVTPF) material; we reveal that the Ti-doped NVTPF could effectively suppress the irreversible phase transformation, thus successfully harnessing Na in a wide voltage range. Experimental study discloses that the Ti-substituted Na 2 VTi(PO 4 ) 2 F 3 could take up the Na + from Amam phase to Cmc21 phase between 1.0 V and 4.8 V reversibly accounting for the 2 Na + transportation that shows favorable Na + kinetics and structural stability. Our research provides the strategy to stabilize the polyanion structure upon charging at a high voltage range and inspires the utilization of full sodium in the polyanionic materials, which could be considered as a material design for future conventional applications.
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Science China-Chemistry
·
2014
·Vol. 57
·期 5
·662-668
·
IF 1.516
Chai YunFeng,Pan YuanJiang
Protonation and alkali-metal cation adduction are the most important ionization processes in soft-ionization mass spectrometry. Studies on the fragmentation mechanism of protonated and alkali-metal-cationized compounds in tandem mass spectrometry are essential and helpful for structural analysis. In some cases, it was often observed that a compound attached by different alkali-metal cations (or proton) exhibits similar fragmentation patterns but the relative abundances of product ions are different. This difference was considered to derive from the different electrostatic interactions of alkali-metal cations (or the bonded effect of proton) with the analyte. The alkali-metal cation with a smaller ionic radius shows stronger electrostatic interaction with the molecule because of its higher charge density. In addition, the bonded effect of the proton is stronger than the electrostatic interaction of the alkali-metal cation. In the present study, which used McLafferty-type rearrangements of even-electron ions ([M + Cat] + , Cat = H, Li, Na, K) as model reactions, the effect of cation size in mass spectrometric fragmentation reactions is highlighted. These considerations were also successfully applied to interpret the similar but distinct fragmentation behavior of proton and alkali-metal cation adducts of a synthetic compound (2-(acetamido(phenyl)methyl)-3-oxobutanoate) and a drug (entecavir).
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Nanoscale
·
2017
·Vol. 9
·期 40
·15558-15565
·
IF 7.367
Zhonggui Gao,Xiao Yu,Jiang Zhao,Wenxia Zhao,Ruimei Xu,Yong Liu,Hui Shen
MoS2 material is considered as a promising anode material candidate in Na-ion batteries (NIBs) due to its high theoretical capacity and layered structure. However, MoS2 nanosheets usually tend to restack or aggregate during the synthesis and cycling process, which makes the advantages of the separated nanosheets disappear. Here, we present a PVP-assisted synthesis for growing long hierarchical MoS2 nanofibers with a length up to 74.5 μm, which were further assembled from intercrossed curly nanosheets with expanded (002) interlayer spacings in the range of 0.62 nm to 1.14 nm. Such architectural design simultaneously combines multiple-scale structural features that are desired for Na-ion storage. On the one hand, the nanosheets can provide a large surface area which is in contact with the electrolyte, a short Na-ion diffusion pathway from the lateral side and facile Na-ion insertion and extraction through the expanded (002) interlayer; on the other hand, the hierarchical MoS2 nanofibers possess a one dimensional structure and a suitable amount of carbon, which can both serve as an electrical highway and prevent them from restacking, resulting in an enhanced electrochemical performance. When used as an anode in NIBs, they demonstrated excellent cycling performance (537 mA h g−1 at 0.1 A g−1 after 200 cycles, and 370 mA h g−1 at 2 A g−1 over 200 cycles) and outstanding rate capability (329 mA h g−1 at 10 A g−1).
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RARE METALS
·
2025
·Vol. 44
·期 6
·3795-3805
·
IF 11
He Kang-Qiang,Liao Xin-Gan,Lian Hao-Jian,Guan Xiang,Chen Da-Zhu,Su Yi-Kun,Li Robert K. Y.,Liu Chen
Solid-state sodium batteries offer new opportunities for emerging applications with sensitivity to safety and cost. However, the prevailing composite electrolyte structure, as a core component, is still poorly conductive to Na ions. Herein, a 3D architecture design of Na + conductive Na 3 Zr 2 Si 2 PO 12 framework is introduced to in situ compound with polymer electrolyte, subtly inducing an anion-enriched interface that acts as rapid ion immigration channel. Multiple continuous and fast Na + transport pathways are built via the amorphization of polymer matrix, the consecutive skeleton, and the induced anion-adsorbed interface, resulting in a high ionic conductivity of 4.43 × 10 −4 S·cm −1 . Notably, the design of 3D skeleton not only enables the content of inorganic part exceeds 60 wt% without any sign of agglomeration, but also endows the composite electrolyte reach a high transference number of 0.61 by immobilizing the anions. The assembled quasi-solid-state cells exhibit high practical safety and can stably work for over 1500 cycles with 83.1% capacity retention. This tactic affords new insights in designing Na + conductive composite electrolytes suffering from slow ion immigration for quasi-solid-state sodium batteries. Graphical abstract
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Rui Wang,Bingxin Sun,Yan Dong,Wang Zhang,Qianhui Wu,Fang Guo,Chunsheng Li,Wenting Li,Ming Chen
Conversion-type selenium cathodes are considered a highly promising alternative to sulfur cathodes due to their high conductivity and similar theoretical capacity. However, stress-diffusion and shuttle effects during the conversion process remain significant challenges that urgently need to be addressed. Herein, a composite matrix of MoSe 2 anchored on the surface of N -doped hollow mesoporous carbon nanospheres (NHMCNS) was designed as a Se host to construct Se/C cathodes (Se/MoSe 2 @NHMCNS). Anchored MoSe 2 successfully mitigated selenium loss by enhancing the chemisorption of polyselenides within the matrix. Meanwhile, polyselenides adsorbed on the Se/C cathode surface exhibit lower diffusion barriers and more negative Gibbs free energy during the conversion from chain polyselenides to Na 2 Se. MoSe 2 accelerated the catalytic conversion of polyselenides to the final discharge products from both kinetic and thermodynamic perspectives. The huge stress induced by structural transformation during the conversion process is mitigated by MoSe 2 synergistic carbon walls, which effectively maintain the structural stability of the cathode. Based on this three-in-one strategy, the sodium-selenium battery assembled with Se/MoSe 2 @NHMCNS exhibits stable cycling performance (400.6 mAh g −1 at 2C after 500 cycles), and the pouch battery also demonstrates good practical performance.
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高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yuanxiu Liu,Tong Shi,Xiyue Cao,Xin Wang,Mengzhe Li,Chenya Lu,Xiaoli Zhang,Ying Tian,Li Yuan,Wengang Jin,Ruichang Gao
This study explored the influences of L-Arg in the ion migration and the quality of low-salt fish balls (L, 0.3 % NaCl). L-Arg significantly increased the weight gain and expansion rate of L by 18.33 % and 13.47 %. Water-holding capacity decreased from the internal to the external part of fish balls, consistent with the looser microstructure. Inductively coupled plasma-mass spectrometry (ICP-MS) revealed that L-Arg promoted Na + migration at setting ( P < 0.05), decreased the internal concentration from 34.38 to 30.37 mg/L and increased the external one from 25.78 to 29.80 mg/L ( P < 0.05). Conversely, Cl − concentration was decreased at setting and improved after the two-stage heating ( P < 0.05), indicating the suppressed Cl − migration. The partial replacement of Na + by L-Arg facilitated the protein unfolding, formation of disulfide bonds and exposure of tryptophan residues. This study enriched the mechanisms of salt reduction and quality maintenance for surimi products regarding ion migration.
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高影响因子
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