Materials Today Chemistry
·
2026
·
IF 7.4
Guorong Liu,Fangyu Zhang,Wendan Yang,Xiaofeng Sun,Yanyan Dai,Jinyuan Ma,Zao Yi
Ni 0.9 Cu 0.1 Co-LDH/15ReS 2 hollow nanocages was constructed. • The introduction of Cu into NiCo-LDH not only enhanced visible light absorption but also effectively suppresses the recombination of photogenerated carriers. • The BEF formed at the interface between Ni 0.9 Cu 0.1 Co-LDH and ReS 2 can facilitate the spatial separation and directional migration of photogenerated carriers. • The mechanism is explained through the complementary combination of experimental analysis and theoretical calculation. • Outstanding operational stability. The pursuit of efficient and stable photocatalysts for solar-driven hydrogen evolution is critical to addressing the global energy crisis. Herein, a novel S-scheme heterojunction is constructed by integrating ReS 2 particles onto Cu-doped NiCo-layered double hydroxide (Ni 1-x Cu x Co-LDH) hollow nanocages, synthesized via an “etch and grow” method using ZIF-67 as a template. The optimized Ni 0.9 Cu 0.1 Co-LDH/15ReS 2 composite achieves a hydrogen precipitation rate of 4.17 mmol g −1 h −1 under the illumination of visible light, which is 5.48-fold and 3.11-fold higher than those of pristine NiCo-LDH and ReS 2 , respectively. This performance improvement is attributed to the synergy of three key factors. (i) Cu doping effectively modulates the electronic structure of the LDH, introduces defect levels to narrow the bandgap (from 2.1 eV to 1.9 eV) for enhanced visible light absorption, and serves as charge balancer to suppress carrier recombination. (ii) The formation of an ordered heterostructure between Ni 0.9 Cu 0.1 Co-LDH and ReS 2 at their interface creates a built-in electric field that promotes the spatial separation and directional migration of photogenerated charge carriers, markedly reduces the likelihood of their recombination. (iii) The heterojunction exhibits a large specific surface area (109.23 m 2 /g), which effectively exposes more catalytic active sites and prolongs the light propagation path, thereby enhancing surface reaction efficiency and light utilization. The composite also exhibits outstanding stability, retaining 96% of its initial activity after four photocatalytic cycles. Combined theoretical calculations and experimental analyses confirm that the well-matched band alignment and robust interfacial interaction enable effective spatial separation of photogenerated carriers while preserving strong redox potentials. The work demonstrates a very promising strategy for designing high performance LDH-based S-scheme heterojunctions toward sustainable solar-to-chemical energy conversion.
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Nature Communications
·
2026
·
IF 18.1
Li Ling,Ning Shangbo,Cheng Fangqi,Chen Mingjun,San Xingyuan,Hu Zhuofeng,Gao Linjie,Tang Yuan,Hao Yuchen,Lv Cuncai,Li Yaguang,Ye Jinhua
Photothermal hydrogenation of CO 2 offers a solar-driven route to multicarbon hydrocarbons, but controlling carbide formation and maintaining reconstructed active sites remain challenging for iron-based catalysts. Here, we develop a trace Al/Rb co-promoted CuFe 2 O 4 catalyst that enables efficient and stable photothermal CO 2 hydrogenation to light olefin under ambient pressure. The optimized catalyst achieves high C 2 -C 4 olefin selectivity of approximately 63%, suppressing CH 4 selectivity and sustaining stable photothermal-catalytic performance for 200 h. Integrated experimental characterizations and theoretical calculations reveal that the CuFe 2 O 4 precursor undergoes reaction-induced reconstruction to form Cu-Fe 5 C 2 interfacial structures. Trace Al/Rb promotion facilitates the formation and stabilization of reconstructed metal–carbide interfaces, with Al regulating the Fe-centered coordination environment and carbide stability, while Rb tunes the interfacial electronic structure and adsorption–hydrogenation balance. This cooperative regulation stabilizes carbide-based interfacial active sites and promotes CO 2 -derived C 1 intermediates toward C–C coupling and C 2 -intermediate stabilization, thereby favoring C 2 -C 4 olefin formation.
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Metals
·
2026
·Vol. 16
·期 8
·922
·
IF 3.1
Guangya Hou,Jingnan Wei,Jianli Zhang,Qiang Chen,Yiping Tang
The development of lightweight, low-cost, and high-performance non-precious metal electrocatalytic electrodes is critical to advancing the practical implementation of methanol and urea oxidation reactions (MOR and UOR) in next-generation energy conversion systems. Herein, we reported a facile synthesis of a W-Se co-modified porous Ni/Cu paper electrode (W-NiSe/Cup) via synchronous pulse electrodeposition onto filter paper-derived porous Cu foil. The hierarchical porosity and high specific surface area originated from the paper template, while synergistic electronic modulation among Ni, W, and Se enhanced intrinsic catalytic activity. At 0.8 V, the W-NiSe/Cupelectrode delivered current densities of 298 mA·cm−2(MOR) and 305 mA·cm−2(UOR) with a lower-mass loading, representing 1.29-fold and 1.34-fold enhancements over the Ni/Cupelectrode. Furthermore, the electrode exhibited exceptional durability: under chronopotentiometry operation at 100 mA·cm−2in a 6-fold-concentrated electrolyte (6 M KOH + 3.0 M CH3OH + 1.98 M CO(NH2)2), the operating potentials retained 95.74% (MOR) and 118.05% (UOR) of their initial values after 9 h. This study offers a novel strategy for designing lightweight non-precious metal catalytic electrodes for portable energy devices and also verifies the broad potential of biomass templates in constructing advanced energy electrocatalytic materials.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
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IF 9.2
Ze Xiao,Yanan Li,Meile Chu,Ming Li,Yang Zheng,Yanfei Liu,Chen Zhang,Yongli Chai
Aqueous phase reforming of methanol (APRM) provides a promising strategy for in-situ hydrogen production, yet its practical application is hindered by insufficient catalyst activity and stability. Herein, we report a carbon-coated copper catalyst with uniformly dispersed nanoparticles for efficient APRM. The Cu@C catalyst exhibits significantly enhanced performance in the presence of KOH, achieving an average hydrogen productivity of 236.2 μmol H2 /g cat. /s at 220 °C, nearly triple that under alkali-free conditions. Notably, the hydrogen purity reaches 99.99% with negligible CO x and alkane byproducts. Mechanistic studies reveal that methanol reforming proceeds via the methyl formate pathway, while KOH promotes reaction efficiency mainly by in-situ CO 2 capture to form KHCO 3 and by removing poisonous CO species. The synergy between Cu@C and KOH boosts catalytic activity, ensures high-purity hydrogen production, and offers a viable approach for stable and scalable APRM-based hydrogen generation.
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Advanced Composites and Hybrid Materials
·
2026
·
IF 15.5
Chen Peng,Liang Yilong,Zhang Hui,Peng Guigui,Ren Xianli
Rapid electrification and renewable-energy infrastructure expansion demand copper materials simultaneously achieving high conductivity and robust structural performance. To address this, the study developed a strategy that couples a solution–solid displacement reaction with electrostatic self-assembly to construct hierarchical MXene/Ag@Cu composite powders, thereby achieving dual molecular-level compositing of Ag and MXene. During sintering, the Ag formed a continuous strip-like Ag phase within the Cu matrix, thereby establishing efficient dual pathways for electron and mechanical conduction, as confirmed by both microstructure characterization and finite element simulation. The first-principles analyses further revealed that Ag acts as an interfacial coupling element, effectively bridging self-lubricating MXene nanosheets with the Cu matrix, thereby enhancing electron transport, load-bearing capacity, and tribological performance. Furthermore, the Ag–MXene architecture was shown to construct a robust physicochemical barrier. Thermophysical measurements indicated its role in managing frictional heat, while first-principles simulations revealed its high energy barrier against O diffusion, collectively mitigating oxidative wear. Benefiting from multiscale synergistic reinforcement, the Cu-matrix composite simultaneously achieved high conductivity (96.3% IACS), excellent strength (354.3 MPa), and an ultralow wear rate (1.72 × 10 − 6 mm 3 N -1 m -1 ). These results demonstrate that the hierarchical Ag–MXene architecture successfully overcomes the conventional conductivity–strength–wear-resistance trade-off, offering a promising strategy for next-generation high-performance copper in advanced energy and industrial applications.
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Journal of Water Process Engineering
·
2025
·
IF 6.7
Abdul Qadir,Adeel Ahmed,Pervaiz Ahmad,Aisha H. Albalawi,Zahrah Alqahtani,Haia H. Aldosari,Raza Ullah,A. Timoumi,Awais Khalid
Metal–organic frameworks (MOFs) have currently attracted interest as effective self-sacrificial templates for the fabrication of hierarchical porous metal–nanoparticle materials. This study involved the synthesis of Cu-based MOF-loaded polyacrylonitrile (MOF/PAN) fibers using electrospinning, subsequently subjected to calcination in a nitrogen environment to yield Cu nanoparticle-loaded carbon nanorods (Cu@CNRs) as heterogeneous catalysts. The catalytic performance of prepared Cu@CNRs was investigated via hydrogen peroxide (H 2 O 2 ), peroxydisulfate (S 2 O 8 2− ), and peroxymonosulfate (HSO 5 − ) activated degradation of sulfamethoxazole (SMX). The activation performance of Cu@CNRs followed the sequence: HSO 5 − > S 2 O 8 2− > H 2 O 2 , indicating that HSO 5 − was the most effective oxidant under identical conditions. The Cu@CNR-I/HSO 5 − system demonstrated exceptional efficacy, attaining 99.99 % SMX removal in 30 min and a significant rate constant of 0.2312 min −1 . The improved activity is due to the hierarchical porous structure, elevated surface area, plentiful active sites, and robust Cu-N-C/HSO 5 − synergy. The carbonization created a polarization disparity in Cu N coordination, thereby promoting PMS activation by Cu(I/II) species. Radical quenching and EPR tests revealed that SO₄ •- and OH • radicals predominated the degradation route. The primary operating factors, such as catalyst and oxidant dose, solution pH, SMX concentration, coexisting anions, and humic acid, were carefully examined. The catalyst Cu@CNR-I exhibited remarkable catalytic stability and reusability over five cycles, indicating significant potential as a sustainable heterogeneous catalyst for wastewater treatment applications.
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MICROCHEMICAL JOURNAL
·
2025
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IF 5.1
Qingchun Lan,Yu Wang,Jinpei Du,Shuqin Fang,Xiaoming Ma
In this study, we developed an ultrasensitive competitive label-free electrochemical immunoassay for the detection of aflatoxin B1 (AFB1) based on a Cu/Cu 2 O/C nanocomposite platform. The sensing matrix was fabricated by thermal decomposition of a two-dimensional copper-organic framework, inheriting the porous structure and large surface area characteristic of MOFs while exhibiting enhanced electrical conductivity. In this competitive detection scheme, free AFB1 molecules compete with electrode-bound AFB1-BSA conjugates for limited antibody binding sites. The resulting variation in electrochemical signals exhibits an inverse correlation with toxin concentration, facilitating ultra-trace detection with an impressive limit of detection of 1.83 pg/mL. The immunosensor features dual linear detection ranges of 10–100 pg/mL and 150–1000 pg/mL, with high specificity and reproducibility. It responds significantly to AFB1, showing minimal cross-reactivity with AFB2 and AFG1, and negligible responses to unrelated mycotoxins. Reproducibility testing yielded an RSD of less than 0.2 %. The sensor retains over 95 % of its initial response after seven days at 4 °C, indicating stability. Validation with spiked cornstarch samples showed recovery rates of 99.68 % to 104.38 % and an RSD of less than 4 %, confirming its effectiveness in real sample analysis. This study establishes a generalizable approach for constructing high-performance immunosensing platforms that are applicable to various mycotoxins and biological targets.
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Journal of Energy Chemistry
·
2025
·
IF 14.9
Rui Zou,Menghui Liu,Linlin Wu,Chenyang Shen,Zhuoshi Li,Xinbin Ma,Maoshuai Li,Chang-jun Liu
The preparation and application of supported gold and copper catalysts are fundamentally and practically very important. Herein, we confirm that the Au-Cu promoted In 2 O 3 catalyst demonstrates a significant electronic metal-support interaction (EMSI), which plays a critical role in CO 2 hydrogenation to methanol and leads to significantly improved activity, compared to the mono-metallic Au and Cu promoted In 2 O 3 catalysts. This interaction arises from electron transfer between the oxygen deficient In 2 O 3 support and the bimetallic clusters, rendering both Au and Cu clusters positively charged. The presence of Cu δ+ stabilizes and optimizes the content of oxygen vacancies, leading to a more pronounced positive charge on Au clusters (Au δ+ ). The ability to activate H 2 is thus enhanced. CO adsorption on Au-Cu/In 2 O 3 is also stronger than Au/In 2 O 3 . This results in higher methanol selectivity of Au-Cu/In 2 O 3 , with which CO hydrogenation pathway is taken for CO 2 hydrogenation to methanol. The enhanced H 2 activation and stronger CO adsorption over Au-Cu/In 2 O 3 are key factors in boosting the activity for methanol formation from CO 2 hydrogenation.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Ziwen Ding,Feiyu Zhang,Haotian Zheng,Yunhe Zhao,Mengfei Ma,Man Zhang,Hongpeng Li,Guodong Li,Siqi Li
Hydrogen sulfide (H 2 S), emerges as a toxic gas that poses significant threats to human life and health, even at low concentrations (100 ppb). Therefore, the detection and monitoring of H 2 S are crucial for ensuring mining safety. Herein, zinc stannate (Zn 2 SnO 4 , ZTO) was synthesized using hydrothermal method, and copper-doped zinc stannate material (xCuZ) were synthesized by in-situ derivation of metal organic frameworks (MOFs). A ppb-level H 2 S gas sensor with rapid response and recovery was developed. The material with a Cu addition of 20 wt% (20CuZ) exhibited the optimal performance, with a sensitivity of 8 to 10 ppm H 2 S at 275 °C, which was approximately 8 times higher than that of pure ZTO, and surprisingly, exhibited high signal-to-noise ratio and rapid response and recovery characteristics (21 s/27 s) at ultra-low concentrations of 10 ppb. The improvement in gas sensing performance can be primarily attributed to the significant adsorption capability of Cu for H 2 S. Furthermore, the incorporation of Cu into the ZTO material induces lattice defects and increases the concentration of oxygen vacancies, thereby enhancing the gas sensing performance. The sensor produced in this study has the potential to mitigate the risks with mining operations while advancing the development of gas sensor technology.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Rushuo Yang,Qi Liu,Zhe Liu,Jiaxuan Wang,Aining Zhang,Yongjun Liu
To effectively degrade phenolic pollutants, metal Cu was incorporated into sludge-based biochar (SBC), thereby creating a Fenton-like catalyst designated as Cu/SBC. This catalyst was combined with H 2 O 2 to establish a Fenton-like reaction system specifically designed for the catalytic degradation of phenol. In the experiment, the degradation efficiency of phenol was used as the evaluation index, and the optimal preparation conditions of Cu/SBC were screened. The results demonstrated that in Cu/SBC, SBC could be used as a carrier for electron transfer, while the addition of Cu was the key to enhance the performance of the catalyst. Under the catalysis of Cu/SBC, phenol in the concentration range of 100–350 mg/L were effectively degraded, achieving a 100 % degradation efficiency within 20 min. The physical and chemical characterization revealed that the surface of the material was uniformly covered with metal groups and a variety of functional groups, resulting in a porous structure with more abundant cavities, larger specific surface area and higher adsorbed oxygen content than the original sludge. The reaction mechanism analysis revealed that free radicals (such as •OH, •O 2 − , etc.) were produced in the Cu/SBC-H 2 O 2 Fenton reaction system, with •OH being the primary radical responsible for phenol degradation. In addition, a variety of intermediate products of phenol degradation were detected, and the possible mechanism of phenol degradation in this kind of Fenton system was proposed. In conclusion, the catalyst developed in this study exhibits excellent catalytic performance and provides valuable insights for research on the degradation of phenolic wastewater.
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JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2025
·
IF 3
Zhihui Xu,Jing Li,Xiaoling Peng,Shan Tao,Jingcai Xu,Bo Hong,Xinqing Wang
The present study utilized Y 3 Fe 5 O 12 (YIG) ferrites as a coating on Fe-Si-B-Cu-Zr nanocrystalline magnetic powder to fabricate soft magnetic composites (SMCs). The influence of YIG content and annealing temperature on the magnetic properties of Fe-Si-B-Cu-Zr/YIG SMCs was investigated. It was revealed that an appropriate amount of YIG in the composite could enhance the permeability and its resistance to DC bias, while reducing eddy current loss. The results demonstrated that the Fe-Si-B-Cu-Zr/YIG SMCs coated with 1.0 wt% YIG exhibited good comprehensive magnetic properties, with a permeability of 33.8, 86.1 % retention under a DC bias of 100 Oe, and a 53.1 % reduction in eddy current loss to 13.86 mW/cm 3 at 500 kHz and 10 mT. Besides, the optimal annealing temperature for achieving decrease core loss and maximum permeability was determined to be 500℃ for the Fe-Si-B-Cu-Zr/YIG SMCs. This study demonstrates a promising coating material to enhance the high-frequency magnetic properties of nanocrystalline soft magnetic composite.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yaning Li,Yue Wang,Hongchao Ma
The tumor microenvironment (TME), characterized by hypoxia, limited H 2 O 2 availability, and elevated glutathione (GSH) concentrations, challenges reactive oxygen species (ROS)-based therapies. To address these, we developed a GOx@Cu-ZIF-8/DOX (GCZD) nanoplatform combining chemotherapy (CT), chemodynamic therapy (CDT), and starvation therapy (ST). This system utilizes Cu-incorporated ZIF-8 (Cu-ZIF-8) as a versatile carrier to load glucose oxidase (GOx) and doxorubicin (DOX). Under acidic TME conditions, GCZD disintegrates, releasing GOx, Cu 2+ , and DOX. GOx catalyzes intratumoral glucose oxidation, producing gluconic acid and H 2 O 2 to achieve a triple-therapeutic effect. Gluconic acid maintains a weakly acidic environment for continuous GCZD degradation. Glucose depletion induces metabolic starvation. Generated H₂O₂ serves as substrate for Cu 2+ -mediated Fenton-like reactions, boosting ROS production. Cu 2+ exhibits catalytic activity, efficiently converting TME and GOx-generated H 2 O 2 into cytotoxic ·OH. Increased ROS concentration enhances biological macromolecule oxidation damage, intensifying CDT. Additionally, Cu 2+ oxidizes GSH to form GSSH and Cu + . This inhibits GSH-mediated ROS degradation and leverages excellent Fenton-like activity of Cu + to further enhance CDT. Simultaneously, DOX exerts chemotherapeutic effects by intercalating into DNA and inhibiting topoisomerase II, blocking tumor cell proliferation. This integrated approach, combining enhanced ROS generation, tumor cell metabolic intervention, and DNA damage, demonstrates enhanced antitumor efficacy by simultaneously targeting multiple cancer cell vulnerabilities.
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