Nano-Micro Letters
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2026
·Vol. 18
·期 1
·127
·
IF 36.3
Wei Xiyan,Guan Jinpeng,Mu Yongbiao,Zou Yuhan,Wei Xianbin,Yang Lin,Man Quanyan,Yang Chao,Zang Limin,Sun Jingyu,Zeng Lin
Aqueous zinc-ion batteries (AZIBs) hold great promise for next-generation energy storage but face challenges such as Zn dendrite growth, side reactions, and limited performance at low temperatures. Here, we propose an electrolyte design strategy that reconstructs the hydrogen-bond network through the synergistic effect of glycerol (GL) and methylsulfonamide (MSA), enabling the formation of a (100)-oriented Zn anode. This design significantly broadens the operating current and temperature windows of AZIBs. As a result, Zn||Zn symmetric cells exhibit remarkable cycling stability, achieving 4,000 h at 1 mA cm −2 and 600 h at 40 mA cm −2 (both at 1 mAh cm −2 capacity); even at −20 °C, Zn||Zn symmetric cells deliver ultra-stable cycling for over 5,400 h. Furthermore, Zn||VO 2 full cells retain 77.3% of their capacity after 2,000 cycles at 30 °C with a current density of 0.5 A g −1 and 85.4% capacity retention after 2,000 cycles at −20 °C and 0.25 A g −1 . These results demonstrate a robust pathway for enhancing the practicality and low-temperature adaptability of AZIBs.
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JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Weiyi Jin,Tianqi Yang,Yi Tang,Weiyu Zhang,Miao Tong,Xiangdong Zhang,Chenliang Gong
Phosphoric acid (PA) leakage and mechanical instability in high-temperature proton exchange membranes (HT-PEMs) remain challenges. In this work, through molecular structure design, a novel tetraamine monomer (PyTAB-5F) was synthesized and used to develop a polybenzimidazole containing perfluorophenyl and pyridine units (5FPBI). Via the Arbuzov reaction, a phosphonated polymer (P–5FPBI) with robust C–P bonds was formed, enabling covalent anchoring of phosphonic acid groups. The acidity of the phosphonic groups was enhanced by the strong inductive effect of adjacent fluorine atoms, allowing them to function as intrinsic proton conductors. These groups can form a stable hydrogen-bonding network with absorbed PA, thereby facilitating proton transport while improving the PA retention capability of the HT-PEMs. The optimized composite membrane (OPBI/P–5F-15%) achieved a peak power density of 757 mW cm −2 at 180 °C and demonstrated exceptional operational stability over 140 h, with a voltage decay rate of only 51.88 μV h −1 . This work provides a molecular engineering strategy for developing HT-PEMs with high performance.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 15
·10503-10517
·
IF 4.4
Chen Jiabing,Lu Zijing
Ostwald ripening (OR) and particle migration and coalescence (PMC)-induced sintering of metal nanoparticles remains a major challenge in heterogeneous catalysis. In the methoxycarbonylation of ethylene, noble metals such as Ru and Pd serve as active centers, yet inevitable metal aggregation during the reaction reduces both the number of active sites and catalyst lifetime. Herein, we report a highly efficient Ru catalyst supported on defect-rich TiO 2 with slight carbon coating for ethylene methoxycarbonylation. Systematic characterizations reveal that the thin carbon layer effectively suppresses OR, while appropriate metal–support interactions prevent PMC. The synergistic effect of these features maximizes the exposure of Ru 0 active sites, enhancing catalytic activity and stability. The catalyst achieves a remarkable reaction rate of 13.18 mol/mol Ru /h and a selectivity of 99% toward methyl propionate, outperforming previously reported Ru-based catalysts. Furthermore, the catalyst retains over 90% of its activity after five consecutive cycles. This work provides a new strategy for designing robust and highly active catalysts for heterogeneous ethylene methoxycarbonylation.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123924
·
IF 7.5
Huanlin Yang,Guilong Li,Chunmei Zhang,Ye Kang,Fengyun Liu,Jialing Zhou,Jian Wang,Hong Tan
Hydrogels hold great potential for osmotic energy conversion via reverse electrodialysis (RED). However, their lack of anti-swelling stability and sufficient ion-transport channels lead to unstable ion selectivity and low power output. Herein, an anti-swelling porous acrylamide/vinyl imidazole/methanesulfonic acid (AM/VI/MSA) hydrogel membrane (AVM-gel) was successfully fabricated via in situ polymerization for efficient osmotic energy conversion. Based on the AM hydrogel framework, ionic pairs were formed between basic VI and MSA, which not only reinforced the three-dimensional network structure but also regulated the charge characteristics, thereby improving the permeability and ion selectivity. The dense hydrogen bonding network and hydration sites introduced by MSA endow the membrane with superior water retention and anti-swelling capacity, effectively preventing structural collapse. Furthermore, incorporation of MSA generates imidazolium-sulfonate ionic pairs and creates uniform, interconnected micron-scale channels, in which the charged pore walls and interfacial electrical double layers regulate local ion distribution, thereby facilitating rapid and preferential cation transport. As a result, AVM-gel achieves a maximum output power density of 74.01 W·m −2 under a 50-fold NaCl (0.5/0.01 M) concentration gradient, surpassing most hydrogel-based generators while exhibiting excellent long-term stability. This work presents a robust strategy to address the dual bottlenecks of insufficient energy output and poor usage stability in hydrogels, advancing the practical implementation of osmotic energy harvesting.
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
·
IF 8.3
Xuemei Hu,Siying Che,Haiyan Fu,Yuanbin She
Colorimetric detection of trace Hg 2+ relies primarily on enzymes -catalyzed 3,3’,5,5’-tetramethylbenzidine (TMB) reactions, with two inherent drawbacks: substrate solubilization dependence on organic solvents and enzymes-associated limitations. By virtue of unique structural tunability and ionic properties, ionic liquids (ILs) dual-substitute enzymes and organic solvents, breaking through traditional bottlenecks via electrostatic assistance. Specifically, ILs enhance TMB water solubility efficiently through π-π interaction/charge-assisted hydrogen bond (CAHB) synergy, thus obviating organic solvents; meanwhile, CAHB and electrostatic interactions accelerate TMB-Hg 2+ redox reactions, eliminating exogenous H 2 O 2 and enzymes s and cutting response equilibrium time by ~35 min. Experiments confirmed that vs. CAHB-free blank systems shows a 2.2-fold increase in absorbance. Moreover, the system exhibits robust anti-interference, maintaining high sensitivity and stability across the pH range of 4.0–6.0. The paper-based ILs sensor allows naked-eye, on-site detection of trace Hg 2+ efficiently.
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Journal of Inorganic and Organometallic Polymers and Materials
·
2023
·Vol. 33
·期 7
·2000-2012
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IF 4
Gao Die,Zhu Qingqing,Liu Peng,Zhou Qing,Cheng Xiujie,Liu Li,Xu Junli,Lu Xingmei
Proton-type ionic liquids have been proved to be promising for the pretreatment of lignocellulosic biomass, because they can provide high yield cellulase hydrolysis and high lignin removal rate. In this work, three proton-type ionic liquids, ethyl methanesulfonamide (EAM), ethyl amine nitrate (EAN) and ethyl amine acetate (EAN[OAc]), were successfully synthesized to pretreat corn straw, and five sugar platform organic solvents were selected as co-solvents for biomass pretreatment. The experimental results showed that under the optimal pretreatment conditions (10 wt% EAM, 130 °C, 2 h, 7 wt% straw loading in PDO solvent), the delignification rate of corn straw could reach 96 wt%, the sugar yield of cellulose-rich substrate could reach 95 wt% in 96 h, the regeneration rate of lignin dissolved in the solvent was 86 wt%, and the remainder of the solvent was small molecular compound, the hemicellulose dissolved in the solvent is degraded to monomolecular sugars (xylose and arabinose). The XRD, SEM characterization data and spectrograms of cellulosic substrate also fully proved that the lignin was successfully dissolved and separated from corn straw by pretreatment of composite system, and in the remaining straw the content and crystallinity of cellulose was improved. In this paper, density functional theory (DFT) is used to explore the pretreatment principle. From the optimized structure, it can be seen that the interaction energy between the ionic liquid cosolvent system and lignin is higher than that in the pure ionic liquid system. The simulation results, experimental analysis and characterization can effectively explain the essence of the system for efficient straw pretreatment, and the system can provide new ideas for the development of biomass pretreatment.
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Biosensors-Basel
·
2023
·Vol. 13
·期 2
·287
·
IF 5.4
Yangjie Li,Site Luo,Yongqiang Gui,Xin Wang,Ziyuan Tian,Haihu Yu
It is significant for people with diabetes to know their body’s real-time glucose level, which can guide the diagnosis and treatment. Therefore, it is necessary to research continuous glucose monitoring (CGM) as it gives us real-time information about our health condition and its dynamic changes. Here, we report a novel hydrogel optical fiber fluorescence sensor segmentally functionalized with fluorescein derivative and CdTe QDs/3-APBA, which can continuously monitor pH and glucose simultaneously. In the glucose detection section, the complexation of PBA and glucose will expand the local hydrogel and decrease the fluorescence of the quantum dots. The fluorescence can be transmitted to the detector by the hydrogel optical fiber in real time. As the complexation reaction and the swelling–deswelling of the hydrogel are all reversible, the dynamic change of glucose concentration can be monitored. For pH detection, the fluorescein attached to another segment of the hydrogel exhibits different protolytic forms when pH changes and the fluorescence changes correspondingly. The significance of pH detection is compensation for pH errors in glucose detection because the reaction between PBA and glucose is sensitive to pH. The emission peaks of the two detection units are 517 nm and 594 nm, respectively, so there is no signal interference between them. The sensor can continuously monitor glucose in 0–20 mM and pH in 5.4–7.8. The advantages of this sensor are multi-parameter simultaneous detection, transmission-detection integration, real-time dynamic detection, and good biocompatibility.
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MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Mingxin Xu,Jie Li,Qingyun Chang,Xiaohuan Zang,Shuaihua Zhang,Chun Wang,Zhi Wang
A molecularly imprinted triazine-based conjugated microporous polymer composite with rich porosity and good selectivity was prepared and used as the adsorbent of solid-phase extraction (SPE). The composite-based SPE for the three phenolic endocrine disrupting chemicals (nonylphenol, octylphenol and bisphenol A) in different beverages followed by derivatization with heptafluorobutyric anhydride and then detection by gas chromatography-electron capture detector was developed. The variables mainly affecting the extraction and derivatization were evaluated. Under the optimal conditions, the limits of detection (S/N = 3) of the established method for the analytes ranged from 0.12 to 1.20 µg L −1 . The linear response range of the method was 0.40–50.0 µg L −1 , with the coefficients of determination falling in the range of 0.9906–0.9994. The relative recoveries of the phenolic endocrine disrupting chemicals in spiked beverage samples at three concentration levels (high, middle, and low) were in the range of 80.6% −117% with the relative standard deviations of 3.5%-11%. The established method exhibits a potential in the monitoring of trace phenolic endocrine disrupting chemicals in real beverage samples.
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BIOMACROMOLECULES
·
2023
·
IF 6.2
Jinhai Xie,Shuangyu Tian,Hanning Zhang,Congshu Feng,Yingchao Han,Honglian Dai,Lesan Yan
The design of nano-drug delivery vehicles responsive to tumor microenvironment stimuli has become a crucial aspect in developing cancer therapy in recent years. Among them, the enzyme-responsive nano-drug delivery system is particularly effective, as it utilizes tumor-specific and highly expressed enzymes as precise targets, leading to increased drug release at the target sites, reduced nonspecific release, and improved efficacy while minimizing toxic side effects on normal tissues. NAD(P)H:quinone oxidoreductase 1 (NQO1) is an important reductase associated with cancer and is overexpressed in some cancer cells, particularly in lung and breast cancer. Thus, the design of nanocarriers with high selectivity and responsiveness to NQO1 is of great significance for tumor diagnosis and treatment. It has been reported that under physiological conditions, NQO1 can specifically reduce the trimethyl-locked benzoquinone structure through a two-electron reduction, resulting in rapid lactonization via an enzymatic reaction. Based on this, a novel reduction-sensitive polyurethane (PEG-PTU-PEG) block copolymer was designed and synthesized by copolymerizing diisocyanate, a reduction-sensitive monomer (TMBQ), and poly(ethylene glycol). The successful synthesis of monomers and polymers was verified by nuclear magnetic resonance (1H NMR) and gel permeation chromatography (GPC). Then, the PEG-PTU-PEG micelles were successfully prepared by self-assembly, and their reductive dissociation behavior in the presence of Na2S2O4 was verified by dynamic light scattering (DLS), 1H NMR, and GPC. Next, the model drug doxorubicin (DOX) was encapsulated into the hydrophobic core of this polyurethane micelles by microemulsion method. It was observed that the drug-loaded micelles could also achieve a redox response and rapidly release the encapsulated substances. In vitro cell experiments demonstrated that PEG-PTU-PEG micelles had good biocompatibility and a low hemolysis rate (<5%). Furthermore, in the presence of an NQO1 enzyme inhibitor (dicoumarol), lower drug release from micelles was observed in A549 and 4T1 cells by both fluorescence microscopy and flow cytometry assays, but not in NIH-3T3 control cells. Predictably, DOX-loaded micelles also showed lower cytotoxicity in 4T1 cells in the presence of NQO1 enzyme inhibitors. These results indicate that drug-loaded polyurethane micelles could accomplish specific drug release in the reducing environment in the presence of NQO1 enzymes. Therefore, this study provides a new option for the construction of polyurethane nanocarriers for precise targeting and reductive release, which could benefit the intracellular drug-specific release and precision therapy of tumors.
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CATALYSIS LETTERS
·
2023
·
IF 2.8
Shi Bingyu,Liu Man,Chen Jiangang
Derivatives of 2,4-dimethyldihydrocyclopentadiene were prepared, characterized by NMR spectroscopy, which was applied to 1-decene oligomerization. A two-step activation method in which both triisobutylaluminium (TIBA) and methyl aluminoxane (MAO) were co-used in sequence particularly been developed for N-doped ligand catalyst. N-doped catalyst had a very high polymerization conversion at 60–110 °C by varying the reaction temperature at 20 eq. of TIBA and 100 eq. of MAO, reaching 89.95% at 80 °C. In addition, oligomers with different viscosity grades could be obtained by adjusting the temperature. At optimized reaction conditions 75 °C, 10 eq. of TIBA and 50 eq. of MAO activation, the single pass conversion of 91.33% was achieved. The obtained oligomers had a high viscosity index above 170 at KV 100 = 6. In addition, the two-step activation method was used to compare with the conventional one-step activation method on catalysts with three different ligands of zirconium chloride. A high catalytic productivity was achieved by the two-step activation process. Depending on the nature of the ligands used, β-hydride elimination, 2,1 insertion and 1,2 rearrangement were detected as main chain release mechanisms. Meanwhile, the pathways of oligomer formation were also summarized. In brief, N-doped complex is promising catalysts for the production of high quality lubricant base oils due to their high catalytic activity and high thermal stability. Graphical Abstract
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JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Ning Xie,Tao Wang,Shenghua Du,Qiang Weng,Kai Zheng,Tong Zhang,Xingming Ning,Pei Chen,Xinbing Chen,Zhongwei An
A series of novel poly(carbazole)-based copolymers tethered with three different cationic groups at the bottom of rigid-flexible coupled side-chains is prepared via superacid-catalyzed polymerization and developed as anion exchange membrane (AEM) for fuel cells. It aims to improve conductivity by aggregating long alkyl chains with good flexibility to make dense cationic groups form large ion transport channels, and the dimensional stability can be improved by the rigid unit due to its large free volume. Meanwhile, the effects of the three cations on the properties of this series of membrane materials are also further investigated. The results show that these AEMs have an ion exchange capacity (IEC) of 2.03–2.21 mequiv. g −1 , exhibiting a high ionic conductivity of 133.7–151.3 mS cm −1 , which is attributed to the microphase separation structure constructed by the hydrophilic/hydrophobic difference between this unique side-chain and backbone. These AEMs can remain at least 82% ionic conductivity after immersion in 2 M NaOH solution at 80 °C for 1080 h, indicating excellent alkaline stability. Finally, the AEM and binder prepared in this work are applied to a single cell, displaying a maximum power density of 546 mW cm −2 and an excellent durability, which demonstrates a promising application in fuel cells.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Chaohua Sun,Rui Miao,Jipeng Li,Yanzhi Sun,Yongmei Chen,Junqing Pan,Yang Tang,Pingyu Wan
Aqueous zinc-ion batteries are considered as an ideal substitute for lithium-ion batteries due to their abundant resource storage, high safety, and low price. However, zinc anodes exhibit poor reversibility and cyclic stability in most conventional aqueous electrolytes. Herein, an environmentally friendly Zn(CH3SO3)2 electrolyte is proposed to solve the problems of common aqueous electrolytes. The bulky CH3SO3– anions can regulate the solvation structure of Zn2+ by replacing some water molecules in the primary solvation sheath of Zn2+, thus slowing the hydrogen evolution side reactions and formation of zinc dendrite. Additionally, the changing solvation structure weakens the bonding between Zn2+ and the surrounding water molecules, which is conducive to the transport and charge transfer of Zn2+, thus improving the battery capacity. In the Zn(CH3SO3)2 electrolyte, Zn plating/stripping exhibits a high Coulombic efficiency of >98% and long-term cyclic stability over 800 h. The specific capacity of the assembled Zn//V2O5 cell in 3 mol L–1 Zn(CH3SO3)2 reaches 350 mA h g–1 at 0.1 A g–1, much higher than that in the ZnSO4 electrolyte (213 mA h g–1). In conclusion, this work offers insights into the exploration of advanced green electrolyte systems for zinc-ion batteries.
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