INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Mengyu Wang,Shuhan Zhang,Chaoyue Meng,Fenglei Han
To enhance the conversion efficiency and product selectivity in CO2 hydrogenation to methanol, we prepared a series of Cu–Fe bimetallic catalysts with varied Cu/Fe ratios supported on HZSM-5 by an initial impregnation method and evaluated them in a dielectric barrier discharge (DBD) nonthermal plasma reactor. Among these, the Cu7Fe3/HZSM-5 catalyst achieved a CO2 conversion of 12.1% and a methanol selectivity of 9.6% in plasma-assisted CO2 hydrogenation, with activity decay below 3% over 400 min of continuous operation. The catalyst structure and surface properties were systematically investigated by SEM, XRD, BET, XPS, H2-TPR, CO2-TPD and CO-TPD. Catalytic performance was assessed under optimized plasma reaction conditions (CO2/H2 = 1:3, total flow 70 mL·min–1, discharge power 20 W, circulating water temperature 30 °C). Furthermore, in situ DRIFTS indicated an oxygen vacancy-dominated formate pathway: oxygen vacancies in FeOx strengthened CO2 chemisorption and induced polarization of the C═O bond; Cu+ sites facilitated sequential hydrogenation of formate intermediates (HCOO*); and the Cu0-HZSM-5 interface optimized H* spillover, collectively suppressing CH4 formation. These results underscore that vacancy engineering and metal–zeolite interfacial effects are pivotal in steering plasma-catalytic CO2-to-methanol selectivity.
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Journal of Materials Chemistry C
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2026
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IF 5.1
Xinbin Wang,Shan Chen,Yun Cai,Furong Wang,Qinsong Zhang,Farouk Meksen,Jun Fang,Yang Yang
Flexible low-strain sensing materials with noncontact detection methods are urgently needed for several emerging industries. Among various reported methods, correlating optical signals with the stress/strain distributions has been recognized as an effective approach for monitoring material deformation. Herein, we reported a strain-responsive fluorescent sensor based on polydimethylsiloxane (PDMS) embedded with strong red-emissive copper nanoclusters (CuNCs) assemblies. The CuNC units, capped with hydrophobic 2-mercapto-4-methylpyrimidine (MMP), self-assembled into ordered microrods in aqueous medium with a certain amount of free MMP trapped inside (CuNCs-MMP), thus intramolecular rotation and vibration of the surface ligands were highly restricted within the obtained dense aggregation. Owing to the compatibility with PDMS and favorable molecular characteristics of MMP, the CuNCs-MMP were well dispersed and embedded in PDMS matrix with less defects. When the composite elastomer underwent slight deformation under minor external strain, the free ligands in the assembled structure moved along with the PDMS matrix, leading to rearrangement of surface ligands and additional space for intramolecular rotation and vibration, thereby enhancing ligandrelated nonradiative relaxation and decreasing the photoluminescence (PL) intensities. The relative emission intensity at 690 nm varied systematically over the external strain range of 0% to 5%, with a minimum detectable strain of 0.5% and a reasonable repeatability. This work provides a feasible strategy to construct stretchable fluorescent sensor based on assembly-induced emission of CuNCs.
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Energy Sources Part A-Recovery Utilization and Environmental Effects
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2021
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IF 3.447
Qiuyun Zhang,Caiyan Yue,Liufang Ao,Dandan Lei,Dan Ling,Dan Yang,Yutao Zhang
In the present study, phosphomolybdic acid (HPMo) supported on Cu-BTC Metal-organic frameworks (MOFs) were prepared and utilized as a solid acid catalyst. The structure of the synthesized materials was characterized by using powder XRD, FT-IR, N2 adsorption-desorption, SEM, TEM, TG, and NH3-TPD techniques. These results exposed that HPMo was successfully encapsulated in the Cu-BTC cage and the Keggin structure of HPMo was maintained in the composite catalyst. In addition, the catalytic activity and recovery properties of the HPMo/Cu-BTC catalyst for the esterification of oleic acid with methanol into biodiesel were evaluated. These results showed that the HPMo/Cu-BTC catalyst exhibited high conversion (93.7%) and excellent reusability due to its mesoporous structure, excellent acidic activity, high BET surface area, large pore volume, and good thermal stability. Meanwhile, the kinetic studies of the esterification reaction revealed that it follows pseudo-first-order kinetics with a low activation energy of 37.5 KJ/mol. More interestingly, it shows potential application for esterification of free fatty acids (FFAs) or pretreatment of low-cost feedstocks contain high FFAs content for the green production of biodiesel.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Haihuan Sun,Xiaoyan He,Zongcheng Yang,Xiaoqing Dou,Wenhan Fan,Chengqing Yuan,Xiuqin Bai
Biofilm formation on material surfaces is a persistent challenge in aquatic environments, creating an urgent need for sustainable catalytic antimicrobial strategies. Although ceria nanozymes with haloperoxidase (HPO)-like activity have attracted increasing attention, their practical application is limited by the low density of surface Ce 3+ sites and oxygen vacancies. Herein, defect-engineered Cu-doped CeO 2 nanozymes were developed to enhance HPO-like catalytic activity and antibacterial performance. Cu incorporation regulated the Ce 4+ /Ce 3+ redox equilibrium and promoted oxygen-vacancy formation, resulting in enhanced catalytic activity, while controlled Cu 2+ release contributed to synergistic antibacterial effects. As a result, the optimized Cu-CeO 2 nanozymes achieved approximately 99% bacterial inactivation against E. coli and 97% inhibition against Bacillus sp. at a low nanoparticle concentration of 10 mg/L, demonstrating broad antibacterial activity against representative Gram-negative and Gram-positive bacteria. Combined experimental characterization and density functional theory calculations revealed the defect-mediated mechanism underlying the enhanced catalytic performance. This work provides a defect-engineering strategy for developing ceria-based nanozymes with enhanced catalytic antibacterial performance for potential catalytic antifouling applications.
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Small
·
2026
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IF 11.8
Hui Wang,Xiang Li,Zitong Jiang,Qing Xu,Qiaoqin Guo,Chaozheng He,Junjun Zhang,Yaming Liu,Mingshang Jin
Direct ethanol fuel cells are promising clean energy devices, but the difficulty in cleaving the C─C bond of ethanol leads to low C1 pathway selectivity (typically ∼10%) and incomplete energy conversion. To address this challenge, we synthesized a porous multiphase Pd-based metallene nanocatalyst co-doped with oxygen-philic Cu and W. Temperature was identified as the key factor regulating the crystal structure: low temperatures yielded amorphous phases, high temperatures produced crystalline phases, and intermediate temperatures formed the desired crystalline/amorphous mixed multiphase structure. This multiphase structure provided abundant active sites. The optimal PdCuW metallene exhibited exceptional performance for ethanol electrooxidation: a record-high C1 pathway selectivity of 72.6% (1.6 times that of undoped Pd metallene and 10.2 times that of commercial Pd/C), a mass activity of 4301.6 mA/mg Pd (4.7 times that of commercial Pd/C), and superior stability (only 7.3% activity decay vs. 67.9% for commercial Pd/C). Mechanistic studies (In situ ATR-FTIR, DFT calculations) revealed that synergistic Cu-W doping reduced the C─C bond cleavage energy barrier, enhanced OH * adsorption, and weakened the poisoning effect of intermediate CO * . The work offers a rational design strategy for high-selectivity electrocatalysts, advancing ethanol's full energy utilization and holding broad implications for Pd-based catalyst systems in energy conversion technologies.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yandong Che,Qianpeng He,Aoyun Yuan,Jie Zhou,Jiacheng Ding,Tõnu Pullerits,Qian Zhang,Yanqiu Yang,Wenjie Li,Peng Song
Integrating pollutant detection and degradation into a single material platform is highly desirable for the efficient treatment of dye-contaminated wastewater. However, simultaneously achieving sensitive detection and efficient photocatalytic activity remains challenging because these functions involve distinct interfacial processes. In this work, an Ag NPs@Cu-V 2 O 5 hybrid was prepared through wet-chemical synthesis and calcination of Cu-V 2 O 5 , followed by ultrasonic coupling with preformed Ag nanoparticles. Cu incorporation modulated the local electronic environment of V 2 O 5 , while the supported Ag nanoparticles provided plasmonic SERS-active sites. XPS binding-energy shifts were consistent with interfacial electronic redistribution, FDTD simulations revealed pronounced local-field amplification around the Ag nanoparticles, and energy-level analysis indicated accessible interfacial charge-transfer pathways under 532 nm excitation. Using colorless, non-resonant 4-MBA as a control probe, the hybrid produced a higher Raman response than the Ag NP reference under equivalent Ag loading, indicating that the enhancement was not solely dependent on the molecular pre-resonance behavior of MB. The hybrid enabled MB detection down to 1 × 10⁻⁹ mol L⁻¹ , with good spatial uniformity and approximately 80% signal retention after 28 days. After correction for dark adsorption, it achieved an MB degradation efficiency of 82.3% after 60 min of visible-light irradiation and exhibited higher photocatalytic activity than pristine V 2 O 5 and Cu-V 2 O 5 . These results demonstrate a plasmonic–semiconductor platform that integrates SERS sensing and photocatalytic remediation through Ag-induced local-field amplification, Cu-related electronic modulation, and Ag/Cu-V 2 O 5 interfacial interactions.
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Materials Today Chemistry
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2026
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IF 7.4
Lin Zhang,Hai-Yan Guo,You-Qiang Yao,Lu Zhang
Pyrazine-modulated PdCu electronic structure enables selective EGOR and HER • Bimetallic synergy and N-coordination boost EG adsorption and *OH generation. • The assembled-cell achieves > 97.77% GA selectivity at ultra-low voltage. • The system requires only 2.89 kWh per m 3 for H 2 , coupled with GA upgrading. Electrocatalytic ethylene glycol oxidation (EGOR) represents a promising route for co-producing value-added chemicals and hydrogen, yet achieving high selectivity and efficiency remains challenging. Herein, we report a bifunctional N-PdCu@Ni(OH) 2 nanosheet catalyst that exhibits exceptional performance for both EGOR and the hydrogen evolution reaction (HER). The material features pyrazine-N-coordinated Pd–Cu dual-sites, where Pd serves as the main active center for EG and *OH adsorption, while Cu doping electronically modulates Pd to enhance glycolic acid (GA) selectivity and promote *H adsorption for improved HER kinetics. In a membrane-free flow cell, the catalyst enables current densities of 100 mA cm −2 at only 1.20 V, with GA selectivity exceeding 97.77% and hydrogen Faradaic efficiency near 100%. The system requires only 2.89 kWh per m 3 H 2 produced, demonstrating a viable strategy for electronic modulation in multifunctional electrocatalysis and advancing low-energy hydrogen production coupled with sustainable biomass upgrading. Download: Download high-res image (525KB) Download: Download full-size image
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Nano Energy
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2026
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IF 16.7
Yan Zheng,Linjing Qiao,Zhongyang Wang,Hao Gong,Boyu Liu,Jiajun Wang,Liping Tong,Zhiyuan Zhao,Xiao Zhou,Tongxiang Fan
Chemical pressure engineering of Jahn-Teller distortion enables broadband high emissivity. • A quantitative Jahn-Teller distortion index ( Q OJT ) is established to correlate structure with emissivity. • Ca 2+ doping (Cu, Cr, Mn) 3 O 4 spinel achieves an emissivity of 0.947 across the 0.4–25 μm range. • Exceptional thermal stability is demonstrated with less than 1.4% degradation at 1673 K. • An 11% enhancement in heating rate is achieved in practical radiative heating tests. Infrared radiation materials with broadband emissivity and high thermal stability are highly desirable for energy saving and thermal management applications. However, achieving high emissivity across the visible to mid-infrared range (0.4–25.0 μm) remains challenging due to the discontinuous absorption mechanisms in ceramics. Herein, a strategy based on promoting Jahn-Teller (JT) distortion is proposed to enhance the broadband emissivity of (Cu, Cr, Mn) 3 O 4 spinel. Substituting Cu 2+ with alkaline-earth ions (Mg 2+ , Ca 2+ , Sr 2+ ) introduces tunable chemical pressure, which modifies the local electric field and valence state distribution, thereby regulating the JT structural evolution. An octahedral JT structural descriptor ( Q OJT ) is developed to quantitatively compare JT structural evolution among different compositions. The Q OJT values show a positive correlation with broadband emissivity. The optimized JT structural evolution simultaneously enhances electronic transition, carrier and lattice vibration absorption, enabling synergistic regulation of broadband emissivity across the entire 0.4–25.0 μm spectral range. Among the investigated compositions, Ca 2+ -doped (Cu, Cr, Mn) 3 O 4 exhibits a broadband emissivity of 0.947 and maintains excellent stability under a simulated hypersonic environment at 1673 K. In radiative heating test, it achieves a heating rate approximately 11% higher than that of Al 2 O 3 . These findings demonstrate that chemical pressure provides an effective strategy for regulating JT structural evolution and designing broadband thermal radiation ceramics for high temperature applications. Download: Download high-res image (225KB) Download: Download full-size image Chemical-pressure-tuned Jahn-Teller distortion in (Cu, Cr, Mn) 3 O 4 spinel enables broadband high emissivity (0.947, 0.4–25.0 μm) and exceptional thermal stability up to 1673 K. A quantitative octahedral Jahn-Teller distortion index ( Q OJT ) correlates directly with emissivity performance. The optimized material achieves a 11% acceleration in heating rate, demonstrating its potential for high-temperature radiative transfer and thermal management applications.
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ENVIRONMENTAL RESEARCH
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2026
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IF 8.2
Junjie Zhang,Jiayuan Xu,Jijun Ding,Haixia Chen
High-efficiency oil-water separation membranes based on low-mesh copper mesh offer advantages in cost-effectiveness, scalability, and adaptability to complex separation scenarios. However, their inherently large pore size usually results in insufficient separation precision. In this work, the Cu/PVDF/CeO 2 composite membrane is fabricated on the copper mesh substrate by combining the non-solvent induced phase separation method with spraying and immersion techniques. By adjusting the porogen content, the pore size of the composite membrane is effectively regulated, leading to enhanced separation efficiency. This strategy aims to simultaneously achieve superhydrophobicity and high-precision oil-water separation on low-mesh-number copper mesh substrates. The Cu/PVDF/CeO 2 composite membrane achieves a maximum water contact angle of 158.7°, exhibiting superhydrophobicity. In oil-water separation tests, the membrane demonstrates a separation efficiency exceeding 98.5% for all tested oil-water mixtures. Optimal performance is observed in the separation of the immiscible mixture of dichloromethane and water, where the membrane achieves a separation efficiency of 99.83% alongside a high separation flux of 79138.4 L m −2 ·h −1 . Additionally, the composite membrane exhibits excellent long-term stability and cycling stability. This study provides a feasible method for the preparation of high-efficiency oil-water separation composite membranes based on copper mesh substrates, with potential applications in industrial wastewater treatment and environmental remediation.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124128
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IF 7.5
Lin-Lin Liu,Xue-Ling Zeng,Xuan Shi,Yu-Zhuo Fan,Wen-Yan Zeng,Ze-Hui Bai,Rong-Ke You,Xue-Qin Zhan,Fang-Chang Tsai,Ning Ma
Developing a multifunctional composite membrane with efficient oil-water separation, antifouling, stability, bacterial filtration, and antibacterial functions is essential for treating oily and organic medical wastewater. In this study, a PVDF/TA/APTES/CMCS/Cu-BTC@TiO 2 membrane was fabricated using mussel-inspired surface chemistry and dip-coating. Hydrophilic tannic acid (TA) and carboxymethyl chitosan (CMCS) enhanced membrane hydrophilicity, while hydrolyzed γ-aminopropyl triethoxysilane (APTES) formed a thin SiO 2 network layer that improved the stability of the deposited coating. Photocatalytic TiO 2 and biocompatible Cu-BTC contributed to the membrane’s photothermal response, antibacterial activity, and bacterial filtration. The membrane exhibited superhydrophilicity (water contact angle 10.3°), underwater oleophobicity (oil contact angle 153.9°), high water flux (5963.33 L·m −2 ·h −1 ), and 98.85% separation efficiency. It also achieved 99.99% bacterial filtration efficiency, 99.9% photothermal antibacterial rate, 99.99% photocatalytic sterilization, and self-cleaning ability. This multifunctional membrane shows great promise for oil-water separation and medical wastewater treatment.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Zhicong Hu,Guannan Li,Wenfu Xie,Jing Liu,Qiang Wang,Jiandu Lei
Coupling glycerol oxidation with hydrogen production offers a promising approach to reducing the energy consumption of hydrogen production and upgrading biomass. However, the catalytic performance is often limited by insufficient interfacial charge transfer and poorly defined active sites. Herein, we report a sulfur-modulated NiFe layered double hydroxide catalyst integrated with a Metal-organic frameworks (MOF)-derived Cu framework on nickel foam, in which well-defined heterogeneous interfaces are deliberately constructed to regulate the local electronic structure and catalytic microenvironment. Sulfur incorporation reconstructs the metal coordination environment and induces electron redistribution. As a result, the catalyst exhibits outstanding glycerol oxidation performance toward formate with high selectivity over a broad potential window, along with remarkable durability at high current densities. In situ Fourier transform infrared (FTIR) spectroscopy identifies the key intermediates involved in glycerol oxidation, while density functional theory (DFT) calculations reveal that sulfur-induced electronic coupling lowers the reaction energy barrier and facilitates charge transfer.
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IEEE Transactions on Components Packaging and Manufacturing Technology
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2026
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IF 3.3
Guannan Yang,Dongchang Ma,Junyi Lu,Weiqiang Li,Chao Tang,Wenzhe Wang,Qiyuan Zhang,Yu Zhang,Guanghan Huang,Chengqiang Cui
This study presents a fabrication method of high-conductive and reliable embedded circuits in glass substrates through pressure-assisted sintering of copper nanoparticle paste. First, inverted trapezoidal grooves were created on glass substrates by picosecond laser modification and hydrofluoric acid etching. Then Cu particles paste with 250 nm size and 75% solid content was filled in the grooves through a two-step filling process. Finally, the samples were hot-press sintered to form conductive circuits. Using the method, embedded circuits with linewidth of 30~100 μm were fabricated on glass substrates, with a porosity of only 7.6% and a resistivity as low as 8.53 μΩ·cm. The embedded circuit structure enabled the precise linewidth control, and also enhance the mechanical interlocking of the circuit with superior adhesion, demonstrated by <5% resistance change and no detachment after tape peel tests. Compared to conventional electroplating method for circuit fabrication on glass substrates, this method eliminates the chemical residues and improves the reliability, offering a scalable solution for circuit fabrication on advanced glass substrates for 5G/6G RF components and optical modules.
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