JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Xugang Rong,Zhenguo Pang,Yutao Wang,Baiquan Chen,Peijin Liu,Quan Zhu,Wei He
Although graphitic carbon nitride (g-C 3 N 4 ) is a promising two-dimensional material with good thermal conductivity, its wide bandgap and rapid charge recombination limit its direct application in photothermal conversion. In this study, an in-situ doping strategy was employed to introduce copper into the intrinsic vacancies of g-C 3 N 4 , fabricating a surface-porous 2D Cu-doped material (g-C 3 N 4 @Cu). Microstructural and spectroscopic analyses reveal that atomically dispersed Cu via Cu-N bonds significantly broadens the visible-light absorption band via the ligand-to-metal charge transfer (LMCT) effect. This mechanism enables highly efficient absorption and photothermal conversion under blue light (450 nm). This novel photothermal sensitizer was then uniformly immobilized onto nitrocellulose (NC) via a solution-based approach, forming g-C 3 N 4 @Cu/NC energetic microspheres. This integrated design not only enhances interfacial adhesion but also curtails the thermal diffusion path from the photosensitizer to the NC matrix, establishing a synergistic photothermal-thermocatalytic mechanism. Consequently, the composite g-C 3 N 4 @Cu/NC achieves a photothermal conversion efficiency of over 37%. Furthermore, its laser ignition delay time is significantly reduced by approximately 30 times compared to the blank control group, demonstrating an extremely low ignition threshold. Ultimately, this study provides fundamental insights into metal-doped g-C 3 N 4 systems and offers an effective material-design approach for integrating photosensitive and energetic materials for highly controllable optical-to-thermal responses.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Liu Gechi,Lin Jian
Rechargeable zinc-air batteries (ZABs) have attracted considerable attention owing to their high energy density and cost-effectiveness. However, the sluggish kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) at the air cathode remain significant challenges, necessitating the development of efficient bifunctional electrocatalysts. Herein, waste ACQ-treated wood was utilized as a sustainable precursor to fabricate a Cu-doped porous biochar catalyst via a two-step pyrolysis and KOH activation strategy. During the activation process, Cu species from the ACQ preservative were converted into Cu/Cu 2 O/CuO nanoparticles that uniformly dispersed within the hierarchical porous carbon framework, while simultaneously introducing abundant defects and edge sites into the carbon skeleton. The optimized catalyst (KAWB-12, activated for 12 h) demonstrated remarkable bifunctional catalytic performance, delivering an ORR half-wave potential (E 1/2 ) of 0.85 V that surpasses commercial Pt/C and an OER overpotential of 389 mV at 10 mA cm −2 comparable to RuO 2 . When assembled as the air cathode in a liquid ZABs, KAWB-12 exhibited an open-circuit voltage of 1.47 V, a high peak power density of 133.83 mW cm −2 , a specific capacity of 776.53 mAh g −1 , and stable cycling performance about 348 h at 10 mA cm −2 , surpassing the Pt/C-based battery. Consequently, this work demonstrates a sustainable strategy for transforming waste ACQ-treated wood into high-performance bifunctional electrocatalysts, offering a scalable approach for developing cost-effective ZAB catalyst materials.
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JOURNAL OF NANOBIOTECHNOLOGY
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2026
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IF 15
Lan Haibo,Wu Zede,Xia Jinghua,Li Qiuyu,Gao Mengdan,Cai Zhuoxiu,Tan Weijing,Liu Minyi,Xu Ziting,Gao Yang,Zhang Li,Zhao Bingxia,Li Yingjia,Liang Yu
Introduction The efficacy of immunotherapy in triple-negative breast cancer (TNBC) is primarily challenged by its inherent low immunogenicity, which is further undermined by the immunosuppressive activity of tumor-associated polymorphonuclear myeloid-derived suppressor cells (PMN-MDSCs). The hypoxic microenvironment renders PMN-MDSCs susceptible to ferroptosis and exacerbates immunosuppression. Objectives This study aimed to design a multifunctional nanoplatform comprising Cu/Mn bimetallic metal-organic frameworks decorated with gold (Au) nanozymes (CMAP MOFs) that simultaneously enhances tumor immunogenicity and alleviates immunosuppression. Methods The characteristics of the nanosystem were evaluated using transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and ultraviolet-visible spectrophotometry. In vitro experiments employed Western blotting, immunofluorescence, and flow cytometry to investigate the mechanisms of enhanced immunogenicity and alleviated immunosuppression in 4T1 cells. In vivo experiments evaluated the therapeutic efficacy of the nanosystem in BALB/c mice bearing implanted 4T1 tumors. Results Within tumor cells, the CMAP MOFs undergo GSH-responsive disintegration. The released Cu/Mn ions catalyze Fenton-like reaction to induce tumor cell ferroptosis and mitochondrial DNA damage, activating cGAS-STING pathway, and facilitating CD8 + T cells recruitment. Simultaneously, released Au nanozymes catalyze H 2 O 2 conversion to O 2 , alleviating hypoxia and preventing PMN-MDSCs ferroptosis and associated immunosuppression. While the immunogenicity-enhancing CMP MOFs group increased CD8⁺ T cell infiltration from 21% to 28.3% with 74.1% tumor growth inhibition, the combined immunogenicity enhancement and immunosuppression relief CMAP MOFs group further boosted CD8⁺ T cell infiltration to 32.4% with superior tumor growth inhibition of 81.3%, with IFN-γ and GZMB expression elevated by 2.2-fold and 2.0-fold (CMP MOFs) and 3.4-fold and 3.0-fold (CMAP MOFs) compared to control. This strategy offers a promising approach for enhancing immunotherapy in TNBC patients. Graphical The alternative text for this image may have been generated using AI.
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高影响因子
ADVANCED ENGINEERING MATERIALS
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2026
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IF 3.6
Xianmei Yuan,Lei Fan,Rongjun Hu,Mingwei Wang,Lang Wu,Shanlin Wang,Fang Li,Jianwen Zhang
Magnesium alloys are used in ultrahigh voltage (UHV) insulator connections due to their high specific strength, vibration damping, and shielding properties. However, their low electrochemical potential (−2.37 V) leads to porous oxide films in tidal flats, humid conditions, and salt spray environments, causing pitting and cracking. Subsequently, microorganisms attach to the surface, secreting metabolites that acidify the area in synergy with Cl − , forming biofilm-corrosion coupling and accelerating failure. To address this, we developed a porous Cu-MOFs/CuS composite coating on AZ31B magnesium alloy using a hydrothermal method (160°C, 10 h) and stearic acid modification, creating a superhydrophobic surface (contact angle of 162°). After 50 cycles of simulated sandpaper abrasion, the contact angle remained above 150°, demonstrating superior mechanical stability compared to pure Cu-MOFs coatings. Immersion tests in acids, bases, and salts, as well as dynamic potentiodynamic polarization curves, proved that the Cu-MOFs/CuS composite coating has superior acid–base-salt stability and corrosion resistance compared to a pure MOFs coating. Moreover, the Cu 2+ released from the coating show high inhibitory and antibacterial effects on Escherichia coli and Staphylococcus epidermidis, significantly reducing the risk of microbially induced corrosion. This provides an innovative solution for the long-term reliable service of magnesium alloys in UHV transmission and transformation equipment.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
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IF 4.8
Yang Zhou,Xin Gu,Hongmin Gao,Hehua Zhang,Ying Liu,Dong Chang,Hongzhi Pan
The abnormally high expression of MUC1 in various malignant tumors makes it a crucial biomarker for early cancer diagnosis. This study synthesized a Cu-MOF@PtPdNPs nanocomposite exhibiting robust peroxidase-like activity via an in-situ reduction method. By integrating this nanomaterial with a dual-aptamer recognition sandwich strategy, an efficient colorimetric sensor was constructed for MUC1 detection. The nanozyme modified with aptamer2 (Cu-MOF@PtPdNPs-Apt2) was used to specifically recognize the target MUC1. Then, magnetic beads modified with aptamer1 (MB-Apt1) were used to enrich and separate the Cu-MOF@PtPdNPs-Apt2@MUC1, forming sandwich complexes. The sandwich complexes were separated and removed using magnets, and the remaining Cu-MOF@PtPdNPs-Apt2 in the supernatant was used for colorimetric detection. This sensor exhibits a linear range from 1 ng/mL to 100 μg/mL, alongside a limit of detection (LOD) of 0.211 ng/mL. Benefiting from the ingenious sandwich architecture, the sensor demonstrates high selectivity toward MUC1 and shows a good response in human serum, with recovery rates between 92.00% and 97.82%. In conclusion, this study provides a fast and sensitive technical platform for MUC1 detection.
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高影响因子
Nature Communications
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2026
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IF 18.1
Lu Shaojie,Hu Yiping,Li Zhenwen,Zheng Liyu,Xiong Lei,Yue Qin
Developing highly efficient noble-metal-free catalysts for oxygen reduction reaction (ORR) is critical for the widespread commercialization of metal-air batteries. Facet engineering provides an effective strategy to optimize the catalysts’ activity, while the controlling facet orientation in non-precious metals remains challenging. Here we show a substrate-induced growth strategy to synthesize copper nanosheets with specific (200) and (111) facet orientations over nitrogen/oxygen co-doped graphene (N/O-C) via chemical vapor deposition (Cu(200)@N/O-C and Cu(111)@N/O-C), revealing a distinct facet-dependent activity for ORR. It clarifies the substrate oxygen coordination promotes preferential Cu(200) growth under moderate deposition, whereas excess vapor drives thermodynamically favored Cu(111) formation. Theoretical and experimental analyses demonstrate Cu(200) facet in N/O-C optimizes the adsorption energies of ORR intermediates and lowers the reaction barrier for the rate-determining step to outperform the Cu(111), which also exhibits better activity compared to commercial Pt/C. When integrated into zinc-air batteries, Cu(200)@N/O-C delivers a power density of 222.5 mW·cm -2 and stable operation for over 1000 hours, highlighting the potential of facet-engineering on earth-abundant Cu for next-generation energy storage.
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高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Yue Zhou,Xuan Lv,Yunling Liang,Bo Zheng,Yufeng Zhang,Qianhui Wu,Guangxiang Liu,Leiming Lang
Developing robust, highly efficient nanozymes as laccase alternatives for the catalytic oxidation and detection of phenolic pollutants is of paramount importance for the ecological environmental sustainability. In this study, we design and fabricate a novel laccase-like Cu-ImSH nanozyme via the solvothermal coordination between Cu(II) ions and a biomimetic 2-mercaptoimidazole (ImSH) organic ligand. By virtue of the resultant Cu I −S and Cu II −N catalytic sites as well as favorable surface properties, the nanozyme exhibits an over 10-fold enhancement in specific activity compared with natural laccase, along with proven catalytic robustness and satisfactory reusability. In terms of environmental applications, the nanozyme is successfully deployed for the catalytic oxidation of diverse phenolic compounds (PCs) and the colorimetric detection of 2,4-dichlorophenol (2,4-DP) as a model pollutant, achieving a detection limit (LOD) of 0.12 μM. Meanwhile, its biomedical potential is demonstrated by the sensitive colorimetric assay of epinephrine (EP) as a model biomarker, with an LOD as low as 0.43 μM. Furthermore, the superior adaptability of Cu-ImSH enables the construction of a hydrogel-based multifunctional point-of-care testing (POCT) kit, which achieves facile, instrument-free determination of both 2,4-DP and EP with reliable detection performance. Taken together, by deepening the understanding of the structure-activity relationship of natural laccase, this work provides considerable value in guiding the biomimetic design of high-performance nanozymes. Moreover, the exceptional, robust, and adaptable catalytic activity of the as-prepared Cu-ImSH nanozyme holds substantial promise for widespread, multi-scenario applications.
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ACS Catalysis
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2026
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IF 13.6
Ziguang Zhou,Yang Zhang,Jungang Wang,Bo Hou,Riguang Zhang,Lixia Ling,Debao Li,Baojun Wang
The use of anatase–rutile mixed-phase TiO2 (P25) as a support improves both CO conversion and selectivity toward low-carbon alcohols (C1–C5 mixed alcohols) during syngas conversion over Cu–Fe bimetallic catalysts. A 61.4% selectivity to low-carbon alcohols was obtained at a CO conversion of 35.0%. The low-carbon alcohol yield (21.5%) over CuFe/P25 is 31 and 3 times higher than the yields over Cu–Fe catalysts supported on pure anatase TiO2 and pure rutile TiO2, respectively. The anatase–rutile synergy in P25 contributes to the high dispersion of Cu–Fe species and facilitates electron transfer from the P25 support to both Cu0 and FeCx active sites via metal–support interaction. CuFe/P25 enhances both the capabilities of CO adsorption, dissociation, and non-dissociative insertion and the formation of CHx, CHO, and HCOO intermediates. These findings suggest that tuning the crystalline phase of the support constitutes a rational strategy for enhancing the catalytic activity of the metal sites.
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高影响因子
WEAR
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2026
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IF 7.2
Qingke Yu,Weisheng Zheng,Jiangtao Yu,Yan Lou,Pan Guo,Guijian Huang,Mingyu Liu
Micro moulds are widely used in the fabrication of micro/nano structures, where wear resistance is critical. This study presents a mixed phosphonic acid self-assembled monolayers (SAMs)-modified Zr-Cu-Al-Ni bulk metallic glass (BMG), which not only retains hydrophobic properties but also demonstrates exceptional high-temperature tribological performance. The wear behavior and mechanisms were systematically studied in the range from room temperature (RT) to 250 °C. Tribological tests were conducted using a multifunctional friction and wear tester in a ball-on-disk configuration, with polyetheretherketone (PEEK) balls as the counterface material against both bare and SAMs-modified Zr-based BMG specimens. The evolution of wear mechanisms in the PEEK-SAMs-modified BMG tribosystem at different temperatures was analyzed, particularly focusing on the coupled effects of the PEEK glass transition temperature and the melting and decomposition temperatures of SAMs on the tribosystem. Results demonstrate that the wear rate of Zr-Cu-Al-Ni BMG exhibits a progressive decrease within the RT to 140 °C range, declining from 53.26 × 10 −6 mm 3 N −1 m −1 to 0.156 × 10 −6 mm 3 N −1 m −1 .At RT, abrasive and minor oxidative wear dominate. Between 90 °C and 140 °C, molten SAMs films provide stable lubrication, with the friction coefficient dropping to 0.004 at 110 °C, indicating full lubrication, while maintaining hydrophobicity. At 150 °C, exceeding the glass transition temperature of the ball material (PEEK), the ball softens and increases the wear rate to 0.324 × 10 −6 mm 3 N −1 m −1 . The wear mechanism in this stage is still dominated by oxidative wear due to high temperature. Interestingly, at 200-250 °C, the friction coefficient follows a different trend, initially increasing, then decreasing, and stabilising after 800-1000 s. At stabilization, the friction coefficient matches that of unmodified BMG, while the wear rate rises to 17.205 × 10 −6 mm 3 N −1 m −1 , attributed to the thermal decomposition of SAMs and lubrication film failure. sam softening promotes adhesive wear and becomes the dominant mechanism. Meanwhile, interfacial property analysis systematically reveals the temperature-dependent effects on the chemical bonding, molecular ordering, and adsorption density of SAMs, elucidating their collective impact on wear evolution. This study demonstrates the exceptional wear resistance of SAMs-modified Zr-Cu-Al-Ni BMG, particularly at 110 °C, and further reveals that molecular interface engineering provides a novel design strategy for high-temperature wear-resistant metallic systems beyond conventional bulk strengthening approaches.
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Journal of Materials Chemistry A
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2026
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IF 9.2
Shuai Li,Baoguo Lv,Haiming Lv,Xiao Liu,Lihong Wu,Lianwang Shan,Yongxin Qian,Daguang Li,Rui Wang,Guizhen Wang
The high-entropy concept has been widely recognized as a promising strategy for enhancing microwave absorption (MA) performance. However, systematic studies on how crystallinity affects the MA behavior of high-entropy materials remain scarce, limiting further performance optimization. In this context, nanoflower-structured high-entropy CoZnCdCuMn sulfide ceramics with different crystallinities were prepared via solvothermal synthesis and post-annealing, revealing a nonmonotonic crystallinity-dependent MA behavior. Among the samples, CoZnCdCuMnS-500 with intermediate crystallinity achieves an optimal balance between dielectric loss and impedance matching, delivering superior MA performance with a minimum reflection loss of −50.79 dB. Furthermore, CoZnCdCuMnS-500 was incorporated into a polymer matrix to fabricate a composite film, which exhibits rapid photothermal response and good cycling stability, highlighting its potential for electromagnetic protection in cold and complex environments. This work elucidates the critical role of crystallization state in governing the MA performance of high-entropy sulfides and provides new insights into the structural design and performance optimization of microwave absorbers.
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Materials
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2026
·Vol. 19
·期 5
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IF 3.7
Shangpeng Liu,Wenji Wang,Dadong Wang,Jian Lu,Yibo Li,Mingchen Lv,Min Sun,Zhen Fan
Heavy metal pollution remains a global environmental challenge, calling for sustainable and low-cost sorbents. Here, we upcycle coir fiber into a bioinspired adsorbent by depositing a polydopamine (PDA) coating (PDA/Coir fiber) for efficient Cu(II) and Cd(II) removal from water while improving effluent safety. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and thermal gravimetric analysis (TGA) confirm successful PDA functionalization and associated structural changes. Compared with pristine coir fiber, PDA/Coir fiber shows 6.84-fold and 12.86-fold higher adsorption capacities for Cu(II) and Cd(II), respectively. Adsorption is well described by the Langmuir isotherm, indicating monolayer-dominated binding. Kinetic analysis shows that the adsorption of both ions follows the pseudo-second-order model. The fiber also exhibits good reusability over four adsorption–desorption cycles. Importantly, cytotoxicity assays of the treated solutions show substantially reduced biotoxicity after metal removal. Overall, PDA/Coir fiber offers a sustainable and low-cost platform for heavy metal removal by integrating efficient adsorption capabilities and safety implications.
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高影响因子
APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Gujie Yao,Xilai Wang,Yanyan Feng,Xiaoqing Wang,Da Jin,Xue you Wen,Zhixiang Fu,Tianxiang Guo
A promising dual-coping Ag,S-Cu x O/Cu foam electrocatalyst was synthesized for CO 2 RR. • The synergistic effect of Ag and S for CO 2 RR toward HCOOH and CH 3 OH was elucidated. • The Ag-S synergistic mechanism governing HCOOH and CH 3 OH formation was revealed. The electrochemical reduction of CO 2 into value-added fuels such as formic acid and methanol presents a promising approach to mitigating climate change, yet it is constrained by the rational design of efficient electrocatalysts and the understanding of structure-efficiency relationships. Here, a highly efficient Ag,S-Cu x O/Cu catalyst was developed via a facile in situ dual-doping strategy, incorporating Ag and S onto pre-oxidized copper foam. Comprehensive multimodal characterization (SEM, EDS, XRD, XPS, AES) and electrochemical measurements (LSV, EIS, GC, 1 H NMR) were conducted to elucidate the catalyst’s structural properties and CO 2 reduction performance. Results indicate that Ag/S dual doping synergistically enhances catalytic activity by reducing solution mass transfer resistance through improved catalyst nanostructures and expanding the electrochemical active surface area (ECSA). Ag incorporation effectively suppresses the competitive hydrogen evolution reaction (HER), while S incorporation lowers charge transfer resistance ( R ct ). Compared with the Cu x O/Cu foam catalyst, the Ag,S-Cu x O/Cu foam catalyst exhibits increased partial current densities for formic acid (HCOOH) and methanol (CH 3 OH) by 17.09 and 5.70 mA·cm −2 , respectively. Furthermore, the reaction pathways for the electrochemical conversion of CO 2 to HCOOH and CH 3 OH are systematically elucidated. This study proposes a dual-doping strategy to achieve sustainable CO 2 electroreduction and delivers fundamental insights into the external parameters that govern the selective formation of high-value products. Download: Download high-res image (142KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）