MICROCHEMICAL JOURNAL
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2023
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IF 4.8
Menghua Liu,Shuangying Li,Zhi Li,Yanhui Li,Yue Zhang,Jingwen Niu,Linchun Nie,Chunmao Chen,Qingxiang Zhou
Amoxicillin is one of the most important semi-synthetic penicillin broad-spectrum β-lactam antibiotics and has achieved many applications. There are few reports on its application for synthesizing carbon dots (CDs). Present work explored the possibility of amoxicillin converted into CDs with sodium carbonate used as the co-reactant employing facile hydrothermal method. The obtained CDs exhibited good selectivity and sensitivity to benzidine and could be explored as an effective fluorescence probe for monitoring benzidine. The fluorescence intensity of CDs was quenched based on the principle of static quenching due to the formation of a non-fluorescent complex between CD and benzidine. Within the range of 0.2–2 μM and 2–16 μM, CDs possessed good linear characteristics, high sensitivity, and a low detection limit of 0.08 μM. The results demonstrated that the fluorescence probe possessed the merits of simplicity, rapidity, low cost, short analytical time, high selectivity and sensitivity, and good stability. According to the verification results from the real water samples, the fluorescence probe had high reliability and feasibility, and could be employed for monitoring benzidine in waters.
研究领域:
分析化学
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环境监测
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纳米材料
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荧光传感
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药物化学
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Chi Jiang,Yan Liu,Shan Yang,Xin Zhang,Ming Wang,Deqing Shi,Xinliang Liu,Yingfei Hou
As a critical component in alkaline water electrolyzers, the separator plays a vital role in overall performance. To overcome the limitations of traditional separators (e.g., low ionic conductivity and insufficient alkaline stability), this study proposes an innovative "pre-embedded monomer-interfacial polymerization" strategy and develops a novel dual-structure, dual-function polymer electrolyte membrane. This membrane achieves simultaneous optimization of stability and conductivity by in situ constructing a uniform QA crosslinked network within the ISM matrix via the Menshutkin reaction. synergistically integrating the alkali stability of ISM with the efficient ion transport properties of AEM. The optimized membrane (POBP-PMDETA-4) exhibited high ionic conductivity (92.3 mS/cm at 70 °C), high electrolyte uptake (101.83%), good hydrophilicity (42.2°), and excellent performance in AWE,achieving 2.01 V at a current density of 0.4 A/cm 2 with stable operation for 346 h. This study offers a promising strategy for designing high-performance, durable separators for advanced alkaline water electrolysis.
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ACS Catalysis
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2026
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IF 13.6
Lixia Li,Feiyue Li,Manman Cui,Lijie Liu,Xiang Zhen,Jiayuan Wei,Jiabao Cui,Jianxun Dong,Jinxing Long,Mingdong Dong,Xiaobing Wang
Reforming 3d-metal-based visible light catalytic platforms is desirable yet challenging for the selective cleavage of the C–C bond in lignin to value-added biochemicals. Herein, we provide a cost-effective iron-catalyzed photochemical strategy for the selective conversion of lignin to benzaldehyde under simulated natural conditions. Furthermore, the product distribution can be rationally regulated by changing the counteranion of Fe3+. With Fe(NO3)3·9H2O, a 100% conversion of diphenyl ethanol (lignin model) was achieved, affording a 186.0 mol % yield and 93.0% selectivity for benzaldehyde via the Cα–Cβ bond cleavage. By contrast, FeCl3·6H2O predominantly favored the Cα–OH oxidation to form diphenylethanone (72.4% selectivity). The results of the mechanistic study and density functional theory (DFT) calculation unveil that benzaldehyde formation proceeds via β-scission of an FeIII alkoxide intermediate through photodriven ligand-to-metal charge transfer (LMCT), wherein the nitrate counteranion serves as an internal oxidant in the iron nitrate catalytic system. Conversely, FeCl3 generates chlorine radicals via homolytic cleavage, resulting in the hydrogen atom abstraction at Cα–OH which consequently inhibits the breakage of the Cα–Cβ bond. Notably, the Fe(NO3)3 catalytic system also enables efficient C–C bond cleavage in realistic lignin (121.3 mg g–1 yield of monophenols), as evidenced by 2D HSQC NMR and FT-IR. Therefore, the findings in this work advance solar-driven lignin valorization and, more importantly, offer deep insights into the recently reemerging photochemistry of FeIII salts.
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ACS Applied Materials & Interfaces
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2026
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IF 8.2
Yunling Tian,Shuang Li,Zhan Wang,Quanchao Zhuang,Zhicheng Ju,Jiangmin Jiang
Silicon monoxide (SiO), with its high specific capacity and low discharge voltage plateau, stands out as a promising anode material for high-energy lithium-ion batteries. However, the application of SiO anodes suffers from an inferior initial Coulombic efficiency (ICE), the instability of the solid electrolyte interface (SEI) layer, and inferior Li+ transport kinetics, leading to unsatisfactory cycling stability and rate capability. Herein, a LiF/Sn–Li hybrid SEI layer is in situ constructed on chemically prelithiated SiO by spontaneous reaction with SnF2 (SnF2–SiO), driven by the redox potential difference between SnF2 and Li, which induces the reductive decomposition of SnF2 and interfacial chemical transformation. Chemical prelithiation compensates for irreversible lithium loss by introducing additional active lithium, thereby enhancing the ICE of the SiO anodes. Notably, the cooperative effect of LiF and Sn–Li alloy stabilizes the electrochemical interface, enhances Li+ diffusion kinetics, and reduces charge transfer resistance. As expected, the SnF2–SiO delivers a remarkable ICE (99.7%) and cycling stability (1126.0 mAh g–1 after 200 cycles), together with superior overall performance for lithium-ion full batteries (SnF2–SiO//LiFePO4). This work confirms the significance of chemical prelithiation and regulation of the hybrid SEI layer for advancing silicon-based anodes in high-performance lithium batteries.
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PubMed
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MACROMOLECULES
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2026
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IF 5.7
Zuo Peng,Li Tingting,Song Shihao,Chu Weizhuo,Gu Xiaoyan,Zhu Youliang,Li Haolong
Sulfonated poly(arylene alkane)s with all-carbon aromatic backbones are promising proton exchange membrane (PEM) materials, but their high conductivity generally relies on a high degree of sulfonation, which often causes excessive water swelling and compromises dimensional stability. Here, we report a side-chain design that introduces sulfur-containing hydrogen-bonding sites to promote proton transport while preserving dimensional stability. Haloalkyl-functionalized poly(arylene alkane)s were grafted with mercaptoalkyl sulfonates, yielding sulfonic acid-terminated side chains bridged by thioether linkages. The resulting polymers form continuous ionic domains through backbone/side-chain microphase separation, while thioether and sulfonic acid groups cooperate to construct dense hydrogen-bonding networks for proton hopping. The optimized SPBT-1 membrane exhibits a high proton conductivity of 308 mS cm –1 at 80 ° C, 1.6 times that of NR212, with comparable swelling. The H 2 /air fuel cell based on SPBT-1 achieves a high power density of 780 mW cm –2 and stable open-circuit operation over 80 h. These results demonstrate side-chain sulfur functionalization as an effective strategy for highly conductive PEMs.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Di Yu,Jiapeng Yang,Jinyu Guan,Xuting Ma,Wenlong Xu,Chukun Zheng,Yuange Cao,Sixuan Pan,Wanting Hao,Xinyue Guo,Shuang Wang
The addition of SBF is conducive to enhancing PA retention. • The proton conductivity of AmPBI-SBF-40 at 180 °C could reach 203.3 mS cm −1 . • The PA retention of AmPBI-SBF-20 at 160 °C/0% RH was 84% after 240 h. • The peak power density of the AmPBI-SBF-40 was 1018.6 mW cm −2 at 180 °C. In this study, a poly(imidobiphenyl-spirofluorene) (SBF) framework was incorporated into the molecular chains of amino-functionalized polybenzimidazole (AmPBI) through rational molecular structure design, resulting in the successful preparation of a series of novel high-temperature proton exchange membranes. The imidazole functional group forms strong hydrogen bonds with phosphoric acid (PA), while the microporous framework constructed by spirofluorene units creates continuous additional proton transport pathways. The synergistic effect of these dual advantages significantly enhances PA uptake capacity and high-temperature proton conduction efficiency of the resulting membranes. In addition, the unique pore structure of the phthalimide units effectively traps free PA molecules within the membrane matrix, thereby inhibiting PA leaching and markedly improving PA retention capability. Electrochemical test results show that the AmPBI-SBF-40 membrane exhibits a proton conductivity as high as 203.3 mS cm −1 at 180 °C. Under the same temperature conditions, its single-cell peak power density reaches 1018.6 mW cm −2 . After undergoing a 240-h long-term acid leaching test under extreme high-temperature conditions of 160 °C/0% RH, the PA retention rate of the AmPBI-SBF-20 membrane remained at 84%. These results confirm that this series of modified composite membranes exhibits excellent high-temperature proton conductivity, single-cell output performance, and long-term chemical stability. Download: Download high-res image (145KB) Download: Download full-size image
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Scientific Reports
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2026
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IF 4.9
Wu Haotian,Liu Xianzheng,Jamadon Nashrah Hani,Li Feng,Tang Rongji,Zheng Liancheng
Amorphous carbon exhibits low initial coulombic efficiency due to its high specific surface area, abundant functional groups, and structural defects, limiting its application in sodium-ion batteries. The development of anode pre-sodiation reagents has diversified and achieved significant progress, yet research on the impact of reagent concentration on electrode electrochemical performance remains an unexplored area. This study systematically investigated the influence of pre-sodiation concentration on the electrochemical performance of porous carbon electrodes by subjecting them to chemical pre-sodiation treatment using sodium biphenyl solutions of varying concentrations. The results indicate that pre-sodiation treatment significantly enhances the electrode initial coulombic efficiency and cycling stability. When the pre-sodiation level is controlled to yield an initial coulombic efficiency below 100%, the electrode sodium storage capacity is promoted; however, when the initial coulombic efficiency exceeds 100%, the capacity is instead suppressed. In summary, rationally designing the concentration of sodium biphenyl solution to maximize the benefits of pre-sodiation is crucial for enhancing the electrochemical performance of sodium-ion batteries.
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Ge Chao,Nanwen Li,Xixing Zhou,Jifu Zheng,Zhongbiao Zhang,Kang Geng,Young Moo Lee
Developing high-performance, stable, non-fluorinated sulfonated hydrocarbon polymers as proton exchange membranes (PEMs) to replace conventional perfluorosulfonic acid (PFSA) materials has attracted significant research interest. Importantly, the long-term chemical durability of fuel cells remains a more critical challenge than achieving high peak cell performance. This study systematically evaluates the structure-performance-stability relationships of five representative sulfonated aromatic polymers featuring comparable ion exchange capacities (IECs). Key membrane properties, including water uptake, proton conductivity, mechanical properties, and oxidative stability, were comprehensively characterized. Among the candidate materials, sulfonated poly(oxindole terphenylene) (SPOTP-100)—which incorporates a rigid backbone paired with side-chain sulfonic acid groups—exhibited superior oxidative stability during Fenton's tests. Furthermore, SPOTP-100 demonstrated exceptional fuel cell durability, exceeding 560 h at 80 °C and 100% relative humidity (RH) under a current density of 0.30 A cm −2 , significantly outperforming the reference polymers (<200 h). These results underscore the decisive role of polymer architecture in dictating PEM lifetime and offer strategic design pathways for durable, high-performance non-fluorinated membranes.
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FOOD CHEMISTRY
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2026
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IF 10.4
Ziteng Huang,Yaru Li,Yuyang Hu,Qiankun Xu,Danya Li,Juzhou Zhang,Xianbiao Wang
Friedel–Crafts acylation yields β-diketone polymer superior to Claisen condensation. • The probe exhibits a vivid green-to-blue shift and intensity enhancement with Al 3+ . • Conformation restriction by Al 3+ coordination enables fluorescence change. • Dual-mode sensing enables both visual screening and precise quantification. • Results in wheat food samples show high consistency with standard ICP-MS methods. Aluminum additives in flour-based foods pose safety concerns and require rapid monitoring. This study presents a high-performance β-diketone main-chain polymer fluorescence sensor synthesized via Friedel–Crafts acylation for specific aluminum detection. This preparation method yielded a polymer with superior sponge-like porosity and extended π-conjugation. Upon Al 3+ coordination, the probe exhibits a distinct fluorescence transition from dim green to brilliant deep blue, enabling visual identification. The response follows a positive cooperative logistic model, achieving a limit of detection of 1.78 μmol/L. Mechanistic studies attribute signal enhancement to a synergistic effect, where coordination restricts the conformational relaxation of the polymer backbone to suppress non-radiative decay while simultaneously increasing radiative oscillator strength. Validated in wheat derivatives with a calibration strategy, the method achieved quantitative results consistent with inductively coupled plasma mass spectrometry. This work highlights the value of backbone-integrated recognition sites and conformational restriction for sensing. A β-diketone main-chain polymer fluorescence sensor addresses the challenge of monitoring aluminum in wheat-based foods. The probe exhibits a positive cooperative logistic response to Al 3+ , characterized by a vivid green-to-blue emission shift. By leveraging a coordination-induced restriction of main-chain conformational relaxation mechanism, the sensor achieves excellent selectivity and sensitivity, allowing for both naked-eye inspection and precise instrumental quantification in real samples. Download: Download high-res image (140KB) Download: Download full-size image
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ADVANCED MATERIALS
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2026
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IF 29.1
Zhihao Sun,Lin Liu,Junwei Zhang,Yuhang Liu,Yifeng Wang,Ying Wan,Fanxing Bu,Bao Zhang,Wanhai Zhou,Dongyuan Zhao,Dongliang Chao
Unlike neutral aqueous batteries with cationic Zn 2+ as the charge carrier, alkaline batteries with anionic [Zn(OH) 4 ] 2‒ and OH ‒ are actually commercially feasible and thermodynamically stable thanks to their ability to suppress hydrogen evolution. Whereas commercial separators in alkaline batteries, without ion regulation capability, fail to suppress severe dendrite and passivation of anionic [Zn(OH) 4 ] 2‒ and accelerate ion transport of anionic OH ‒ . Herein, we tailor the coordination structures of alkali-stable cationic complexes in polymer separators (CCPS) to construct anionic OH ‒ selective transfer channels. Synchrotron spectroscopic characterizations and theoretical calculations reveal that the low-coordination cationic complexes expose more positive charge density, electrostatically attracting more negative charge from [Zn(OH) 4 ] 2‒ . In situ electrochemical digital holography technology and time-of-flight secondary ion mass spectrometry analyses further confirm the homogeneous [Zn(OH) 4 ] 2‒ distribution at the CCPS-electrode interface, oriented Zn deposition, and impeded passivation. As a result, CCPS enables alkaline Zn||Cu cells to operate over 5500 cycles at 1 mA cm ‒2 with a high coulombic efficiency of 99.99%. Alkaline Ni–Zn batteries exhibit ultrastable cycling over 1000 cycles at 6 C and maintain 86.17% of their maximum capacity at 10 C. Our work may provide practical and effective separator strategies to accelerate the commercialization of alkaline batteries.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Taiping Fu,Zekun Jing,Xinrong Yan,Yongsheng Li,Biye Niu,Zhanpeng Ye,Yufeng Liu,Yakun Guo,Maobing Shuai
Achieving the highly efficient hydrogenation of polycyclic aromatic hydrocarbons (PAHs) under mild temperatures remains a significant challenge. Herein, we report a highly active RuRh alloy catalyst supported on carbon nanofibers (RuRh/CNFs) developed via element screening. This catalyst achieves 100% conversion of naphthalene to decalin within 15 min at room temperature under solvent-free conditions. It exhibits a high turnover frequency (TOF) of 214.2 h–1 at 25 °C (1071 h–1 at 35 °C), significantly surpassing single-metal catalysts. Additionally, a 97% yield of the intermediate tetralin was obtained by fine-tuning the kinetic parameters. The catalyst demonstrates exceptional recyclability and broad substrate universality. Mechanistic studies attribute this performance to the synergistic effect between Ru and Rh, which enhances hydrogen migration and optimizes adsorption energies for substrates and intermediates, providing both theoretical insights and practical validation for the rational design of highly efficient PAHs as hydrogenation catalysts.
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ACS Catalysis
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2025
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IF 13.1
Jingrong Li,Ying Wang,Tingting Xiao,Xinluona Su,Haiyang Cheng,Fengyu Zhao
Hydrogenation of aromatic molecules is a crucial industrial process that has been extensively employed in the synthesis of fundamental chemicals. In this work, the hydrogenation of bisphenol A (BPA) was studied over a kind of Ru/TiO2 catalyst. The catalytic activity of Ru/TiO2 was adjusted via manipulation of the metal–support interaction (MSI) by thermal treatment. The Ru/TiO2 exhibited a volcano-shaped dependence on calcination temperature, with the highest activity presented at 300 °C for the hydrogenation of BPA at mild conditions, produced 4,4′-isopropylidenedicyclohexanol (HBPA) with a yield of 99% at 80 °C, 4 MPa H2. The MSI could be adjusted by varying the calcination temperature, and flat Ru islands were formed at elevated temperatures, which facilitate the adsorption of the benzene ring of BPA. However, small-sized and electron-deficient Ru species prefer to adsorb H2. The Ru/TiO2-300 catalyst contains an appropriate composition of Ru nanoparticles and Ru flat islands, effectively balancing the competitive adsorption of H2 and BPA molecules, and thus exhibits high catalytic performance. Moreover, the Ru/TiO2-300 catalyst is highly efficient for a variety of aromatic compounds, producing the desired products selectively under mild conditions. Furthermore, it presented high stability without any loss in activity after 10 recycles. This work developed an efficient catalyst for the hydrogenation of aromatic compounds, and the insights into the catalytic mechanism will provide useful information to researchers in wide fields.
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