MICROCHEMICAL JOURNAL
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2026
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IF 5.2
He Bu,Qingling Zhao,Jie Gao,Zixuan Zhang,Ze Liu,Lanlan Li,Xiaofei Yu,Xiaojing Yang,Zunming Lu,Shuquan Zhang,Xinghua Zhang
Fluorescent carbon dots (CDs) derived from traditional Chinese medicine (TCM) face limitations in water solubility and tunable emission, hindering their biomedical application. To address this, we synthesized baicalin-based CDs and engineered their surface with cetyltrimethylammonium chloride (CTAC) and Cu ions. This sequential modification first shifted the emission from blue to orange by introducing N/O-containing functional groups that reduced the energy gap. Subsequent Cu incorporation created Cu-related energy levels, further narrowing the gap to achieve red emission at 660 nm alongside enhanced solubility. In addition, the resulting Cu/CTAC-CDs served as a selective fluorescent probe for histidine, enabling its sensitive detection in complex matrices such as pig blood and milk. This work provides a viable route to fabricate water-soluble, emission-tunable TCM-derived CDs and offers fundamental insights into surface-state-controlled luminescence, advancing their development for biomedical applications.
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高影响因子
Journal of Materials Chemistry C
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2026
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IF 5.1
Weiqi Yu,Hao Qiu,Menghui Lin,Xiaolong Zhang,Shunwei Chen,Zifei Wang,Ming-Zhi Wei,Conghui Si,Xiujun Han,Xujun Zheng
Small organic molecule-based therapeutic systems that integrate near-infrared (NIR) photothermal activity with Cu²⁺-mediated functionality as an orthogonal therapy pathway remain scarce. Herein, we demonstrate that coordination of Cu²⁺ with a small photothermal agent induces a pronounced bathochromic shift of light absorption into the NIR region and enables effective dual-mode antibacterial activity. Two rationally designed molecules, BTAA-Me and BTAA-Et, feature a photon-driven rotating imine bond that promotes efficient non-radiative excited-state decay for high photothermal conversion, together with a bis-benzothiazole motif that serves as a selective Cu²⁺ coordination site. The resulting complex, Cu²⁺@BTAA-Et, exhibits pronounced bactericidal activity against Staphylococcus aureus and Escherichia coli under 808 nm laser irradiation, markedly outperforming either photothermal treatment with BTAA-Et or Cu²⁺ treatment alone. Static density functional theory (DFT) calculations and excited-state dynamics simulations based on time-dependent DFT (TD-DFT) systematically elucidate the underlying mechanisms. This work provides mechanistic insights into the rational design of dual-mode biomedical materials that synergistically combine photothermal effects with metal ion-mediated activity.
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Journal of the Iranian Chemical Society
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2026
·Vol. 23
·期 8
·258
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IF 2.4
Yu Haiyan,Zhang Li,Jia Yongpeng,Tian Ye
Two coordination polymers, CP1 and CP2, based on Cu(II) and Zn(II) ions, were synthesized and structurally characterized as fluorescent sensors for 1,10-phenanthroline, an important nitrogen-containing chelating agent widely used in coordination chemistry and industrial systems. Both materials exhibit good crystallinity, thermal stability, and intrinsic fluorescence. Their fluorescence sensing behaviors toward 1,10-phenanthroline were systematically investigated in aqueous media. CP1 and CP2 show high selectivity and sensitivity toward 1,10-phenanthroline, with Stern–Volmer constants of 1.11 × 10⁵ M⁻¹ and 6.95 × 10⁴ M⁻¹, and detection limits of 3.2 µM and 4.5 µM, respectively. In addition, both coordination polymers display good anti-interference ability and recyclability. Comparative studies reveal that the different sensing efficiencies of CP1 and CP2 are closely related to the distinct electronic properties of the Cu(II) and Zn(II) centers. Mechanistic investigations indicate that the fluorescence quenching mainly arises from coordination interactions between 1,10-phenanthroline and the metal centers. This work not only demonstrates the potential of coordination polymers as effective fluorescent sensors for phenanthroline detection, but also provides insight into the role of metal centers in regulating fluorescence sensing performance.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2026
·Vol. 37
·期 22
·1771
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IF 3.2
Zhang Enlei,Xu Zhiyi,Song Xiaowen,Wang Shuyuan,Zhang Bengui,Xie Yingpeng,Wang Guosheng
Hydrogen peroxide (H 2 O 2 ) detection is of great significance in environmental monitoring, food safety, and clinical diagnosis. Copper doping into α-FeOOH nanorods significantly enhanced the sensitivity and stability for electrochemical detection of H 2 O 2 . The structure and surface morphology of the products were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The electrochemical properties of CuFe 2 O 4 /α-FeOOH were studied by cyclic voltammetry and amperometry. The results showed that the composition and morphology of the as-prepared products were dependent on the Cu doping level. When the Cu doping level was up to 10 mol%, a spinel copper ferrite (CuFe 2 O 4 ) phase was formed in the product, accompanied by a morphological evolution into nanoparticles. The CuFe 2 O 4 /α-FeOOH/FTO (Fluorine-doped tin oxide) electrode exhibited excellent performance to detection of H 2 O 2 with high sensitivity (125.86 μA·mM −1 ·cm −2 ) and a low detection limit (0.56 μM, S/N = 3). Finally, the possible mechanism of the CuFe 2 O 4 /α-FeOOH catalysts for H 2 O 2 detection was analyzed and discussed.
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ELECTROCHIMICA ACTA
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2026
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IF 5.8
Yuanxiang Zhang,Mengting Yuan,Zhen Mu,Xinchun Zhou,Tianlong Huang,Guoqiang Hu,Yang Zhang,Lingxiu Chen,Xiaolan Xue
A nonaqueous AlCl 3 CuCl/THF electrolyte is developed for Cu metal batteries. • Undissolved CuCl particles act as a Cu⁺ reservoir via dissolution equilibrium. • Dynamic Cu⁺ supply enables sustained Cu plating on passivated surfaces. • The dominant reaction pathway shifts from Cu⁺/Cu 0 to Cu 2+ / Cu 0 during cycling. • Stable Cu cycling over 1400 h is achieved at 0.5 mA cm⁻ 2 . Aqueous copper metal batteries suffer from passivation caused by a Cu 2 O layer that blocks interfacial ion transport. Here, we develop a non-aqueous electrolyte system in which tetrahydrofuran (THF) solvent is employed to suppress Cu⁺ disproportionation, while the strong Lewis acid AlCl 3 is introduced to enhance the solubility of CuCl, thereby maintaining ionic transport in the liquid phase. At the early stage of cycling, the intrinsically low solubility of CuCl leaves residual CuCl on the separator, serving as a Cu⁺ reservoir. Despite local passivation, the dissolution equilibrium continuously supplies Cu⁺, enabling sustained deposition of fresh Cu on the passivated surface. With continued cycling, incomplete stripping of Cu gradually covers passivation layer, leading to gradual restoration of the Cu electrode, thereby enabling stable cycling for over 1400 h at 0.5 mA cm⁻ 2 . Further characterization reveals that the low overpotential at the initial stage is dominated by the Cu + + e⁻ → Cu 0 pathway. In the mid-to-late cycling stages, gradual depletion of Cu⁺ increases the contribution of the Cu 2+ + 2e⁻ → Cu 0 pathway, resulting in a moderate rise in overpotential. Nevertheless, due to the dynamic reconstruction of the interfacial layer, highly reversible Cu deposition/stripping is maintained throughout cycling. This work provides new insights for the design of advanced copper-based battery electrolytes. Download: Download high-res image (245KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Zijian Yang,Jiacheng Peng,Qingwen Shi,Yuhan Wang,Jiawei Hong,Yong Yang,Yi Sun,Guoqiang Luo,Qiang Shen
Driven by the demand for cost reduction and enhanced performance in electronic applications, Cu@Ag bimetallic powders have attracted considerable attention as functional materials, requiring high electrical conductivity, excellent stability and environmental durability. This study uses ascorbic acid as the reducing agent and aqueous ammonia as the pH adjuster to prepare Cu@Ag bimetallic conductive powders under various ascorbic acid concentrations, pH values and temperature conditions. The results show that the powders form a protective silver shell through a layered growth mode. Crystal structure analysis reveals that the silver shell consists of hexagonal {111} planes and square {100} planes. These results suggest that the formation of this morphology may be associated with the synergistic effects of reduction kinetics and surface adsorption of ascorbic acid. Under alkaline conditions, a sufficient amount of ascorbic acid provides a strong reduction driving force and high nucleus supersaturation. In particular, its synergistic interaction with ammonia regulates Ag-species complexation, nucleation, and surface growth, thereby favoring the formation of layered structures. Non-equilibrium kinetic analysis and weatherability tests demonstrate that the as-prepared powders exhibited excellent oxidation resistance, short-term hygrothermal stability and acid resistance under the tested conditions. The conductive film exhibits a low resistivity of 70 μΩ·cm, 60% lower than that of the pure Cu film. This work mitigates the limitations in weatherability and conductivity caused by non-uniform and incomplete coatings through compositional and structural regulation. Meanwhile, the strategy improved Ag utilization efficiency and achieved enhanced performance at reduced Ag loading, providing a viable route for the controllable fabrication of low-cost, high-performance Cu@Ag conductive powders.
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ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Dongying Yan,Weifeng Fan,Chenxi Bai
Upgrading biomass-derived platform molecules into liquid fuels is vital for sustainable biorefineries. However, selectively hydrogenating sterically hindered carbonyls, such as 2-acetylfuran (2-AF), remains difficult. The main challenge lies in targeting the C═O bond while avoiding the side reactions associated with the highly reactive furan ring. To address this activity-selectivity trade-off, we developed a defect-carbon-mediated interfacial engineering strategy to construct robust Cu/La2O3/C catalysts via a green, glucose-assisted sol–gel route. Unlike conventional inert carbon supports, the in situ-generated defect-rich carbon plays a pivotal dual role: it not only physically confines Cu nanoparticles to prevent sintering but also chemically induces the restructuring of the La–O framework during reduction. Advanced in situ characterizations (Raman, DRIFTS) combined with DFT calculations suggest the possible formation of Cu+–Ov–La3+ interfacial structures. These motifs are proposed as plausible structural features that may correlate with hydrogen spillover and carbonyl activation. Consequently, the optimized Cu/La2O3/C-350R catalyst achieves nearly quantitative conversion (>98%) and exclusive selectivity (100%) for 1-(furan-2-yl)ethanol, outperforming carbon-free counterparts at 160 °C. This work establishes a scalable protocol for coupling vacancy chemistry with hydrogen transfer dynamics, offering new insights for designing robust non-noble metal catalysts in biomass valorization.
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高影响因子
ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Xiangnan Li,Ziya Zhang,Xiaojian Liu,Zhenpu Shi,Kaige Lu,Yanhong Yin,Hongyu Dong,Yange Yang,Baopeng Li,Huishuang Zhang,Shu-Ting Yang
The precise design of a high-entropy cathode material can achieve excellent performance. Many scholars have conducted extensive research on element design, but studies on the roles of each element are relatively scarce in high-entropy systems. In this project, we adjusted the composition of Cu/Co elements and developed three materials, NaNi0.25Fe0.15Mn0.3Ti0.1Ce0.02Co0.09Li0.1O2 (HEO-Co), NaNi0.25Fe0.15Mn0.3Ti0.1Ce0.02Cu0.06Co0.05Li0.1O2 (HEO-CC), and NaNi0.25Fe0.15Mn0.3Ti0.1Ce0.02Cu0.13Li0.11O2 (HEO-Cu). The physical properties and electrochemical performances are analyzed. The appropriate introduction of the Cu element can reduce the voltage difference between the redox potential and the electrochemical polarization. Moreover, it possesses outstanding air and structural stability. The appropriate proportion of the Co element can expand the interlayer spacing of the Na layer, increase the diffusion coefficient of Na+, and achieve excellent rate performance. The appropriate ratio of Cu and Co combines the advantages of both elements, endowing cathode materials with a stable structure, excellent air stability, and electrochemical performance. This work thoroughly explores the specific roles of Cu and Co elements, providing valuable insights for the design of high-entropy cathode materials and a practical pathway toward industrial-scale applications.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
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2026
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IF 4.7
Ren Yue,Miao Yuhang,Ren Qinghui,Wang Shen,Zhang Liyi,Li Ling,Pan Dengke,Zhou Hua,Shao Mingfei
Biomass conversion to building blocks powered by renewable electricity offers a promising route toward low-carbon plastics, as exemplified by the electrooxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA). However, this field is limited by a scalable electrocatalyst that can be operated at a large current. Here, we report a facile and scalable Cu-Co bimetal oxide (Cu-CoO x ) electrocatalyst for efficient HMF oxidation. Comprehensive studies reveal that Cu promotes hydroxyl adsorption to form Co(OH) 2 and converts to CoO x (OH) y via electrooxidation. The Cu-CoO x catalyst was evaluated in a continuous-flow reactor with 200 cm 2 of electrode area, achieving high Faradaic efficiency (92.49%) and selectivity (ca. 89%) toward FDCA at large operation currents (40–200 A). Moreover, this reactor was operated at 100 A for more than 100 h, reaching high single-pass conversion efficiency (96.5%) and FDCA selectivity (95.5%). This work provides a foundation for the development of stable and large-area electrodes to enable scalable FDCA electrosynthesis.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Yi-Feng Lu,Li-Na Zhu,Yi-Lin Zhao,Xin Wang
In this work, a binder-free, self-supported Ni–In₂O₃ heterostructured electrode was constructed on three-dimensional Cu foam for the non-enzymatic electrochemical detection of H₂O₂ under near-neutral conditions. In₂O₃ was conformally grown on Cu foam through a solvothermal process followed by calcination, and Ni species were then introduced by electrodeposition to form a Ni-containing/In₂O₃ composite coating with close interfacial contact and a hierarchically rough surface. Owing to its reduced charge-transfer resistance and enlarged electrochemically accessible surface, the Ni–In₂O₃/Cu foam electrode exhibited a sensitive amperometric response toward H₂O₂ reduction in 0.1 M PBS (pH 7.4) at −0.60 V vs. SCE. Two linear ranges were obtained, from 0.6 μM to 1.759 mM and from 2.059 to 9.059 mM, with corresponding sensitivities of 18.492 and 9.799 μA·mM −1 ·cm −2 , respectively, and a detection limit of 0.228 μM (S/N = 3). The sensor also exhibited good anti-interference performance, acceptable repeatability and reproducibility, and stable performance over 25 days. In standard-addition analyses of milk, tap water, and fetal bovine serum, recoveries ranged from 99.3% to 104.7%, with low RSD values (0.07%–3.25%), and Student's t -test revealed no significant difference between the measured and nominal concentrations ( p > 0.05). Moreover, cytocompatibility evaluation and in situ monitoring of H₂O₂ released from PMA-stimulated cells demonstrated its potential applicability in cell-related redox analysis. These results demonstrate that the proposed Ni–In₂O₃/Cu foam electrode is a promising platform for sensitive, reliable, and practical H₂O₂ sensing under near-neutral conditions.
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NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.6
Dongling Meng,Zhiyan Chen,Zhibin Chen,Junrao Cen,Chengwei Lin,Yaling Yang
Herein, a novel bimetallic (Fe,Cu/His) nanozyme with high peroxidase (POD)-like activity for colorimetric assaying of glucose was designed. Assisted by glucose oxidase (GOx), glucose could be specifically converted into H2O2 for oxidizing chromogenic substrate 3,3′,5,5′-tetramethylbenzidine (TMB) catalyzed by Fe,Cu/His to generate blue oxTMB with absorption at 654 nm. Specifically, Fe,Cu/His exhibits excellent POD-like activity due to ascorbic acid with reducing properties to ensure the formation of binary-valence metal pairs (Fe3+/Fe2+ and Cu2+/Cu+), thus enhancing electron transfer during the catalytic process. Based on the cascade reaction of GOx and the Fe,Cu/His nanozyme, a sensitive colorimetric assaying platform for glucose detection was constructed with a good linear range of 5–1000 µM and a calculated limit of detection of 1.44 µM. This proposed method was applied to assay glucose in tobacco samples sensitively and accurately.
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CATALYSIS LETTERS
·
2026
·Vol. 156
·期 10
·292
·
IF 2.5
Liu Xi,Wu Wenjian,Wang Ran,Li Rongkang,Li Yafei,Hou Jie,Xiao Fuquan,Zhu Linhua
Heterointerface engineering is a catalyst design strategy based on the symbiotic growth of heterogeneous metal oxides. This strategy endows electronic structures, surface properties, and generation of active centers that are unavailable in the individual oxides. It can even generate entirely new active sites, thereby significantly enhancing catalytic performance. Herein, we prepared MoO 3 @Cu x O with symbiotic MoO 3 and CuO as a catalyst for aerobic catalytic oxidative desulfurization. Notably, after symbiosis, the catalyst exhibits new low-valence Cu + active sites absent in the individual oxides, along with defective interfaces more favorable for catalytic reactions and enhanced surface redox properties. Catalytic testing validates these findings: these new low-valence Cu + active sites enable the activation of superoxide radicals, achieving 100% desulfurization of aromatic sulfur compounds under air atmosphere within 5 h. Through the rational design of symbiotic heterogeneous metal oxides, this study not only highlights the pivotal role of heterointerface engineering in catalytic oxidation but also offers an effective strategy for designing oxidative desulfurization catalysts. Graphical
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