JOURNAL OF POWER SOURCES
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2026
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IF 8.4
Yongkang Luan,Linhao Fan,Chasen Tongsh,Siyuan Wu,Kui Jiao
Water flooding within catalyst layers (CLs) results in increased mass transfer loss and a significant performance degradation in proton exchange membrane fuel cells (PEMFCs). In this work, we leveraged the unique advantage of electrospinning to separately fabricate catalyst fibers and hydrophobic polyvinylidene fluoride (PVDF) fibers, thereby enhancing the consistency and controllability of CL fabrication. Using this approach, we developed a gradient hydrophobicity-modified nanofiber (GHM-NF) CL, in which the region close to the PEM exhibits relatively hydrophilic to maintain effective proton conduction, while the region adjacent to the gas diffusion layer is appropriately hydrophobic to enable efficient water expulsion. The power density of GHM-NF CL at 2.4 A cm −2 is 9.1% higher than that of the NF CL, accompanied by a 22.7% reduction in concentration resistance. The GHM-NF CL also demonstrates excellent drainage under higher Pt loading, where enhanced current densities and greater water production occur. Its power density at 3.5 A cm −2 reaches 1.239 W cm −2 , which is 8.9% higher than that of the NF CL. Meanwhile, at 3 A cm −2 , the concentration resistance of the GHM-NF CL is only 52.3 mΩ cm 2 , a 16.7% decrease compared to the NF CL (62.8 mΩ cm 2 ). Overall, this developed GHM-NF CL mitigates flooding and suppresses the sharp rise in mass transfer losses under high current densities and substantial water production, offering a promising new strategy for designing hydrophobic gradient CLs with high drainage capacity to meet the ever-increasing performance demands of commercial PEMFCs.
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高影响因子
Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 5
·124383
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IF 7.5
Zhengyan Liu,Xiaoli Su,Jie Li,Nan Jiang,Muhammad Imran,Yunxia Chen
A plasma-catalytic system coupled with floating electrode discharge with metal foam-supported catalysts was developed for efficient toluene degradation. The influences of different transition metal oxides (Co, Mn, Ce) loaded onto Fe foam (FF) substrates on the crystal structure, surface morphology and catalytic performance were systematically investigated. Catalysts were symmetrically placed on both sides of the floating electrode. Among the investigated metal oxides, Co was found to form a uniformly distributed CoFe 2 O 4 surface layer on the FF substrate, while Mn and Ce were heterogeneously dispersed as MnO 2 and CeO 2 , respectively. All metal-loaded catalysts enhanced the discharge power of the reactor, attributed to surface charge accumulation on metal oxides. The Co/FF catalyst exhibited the highest toluene degradation efficiency, CO 2 selectivity and O 3 decomposition capability. This plasma-Co/FF system significantly reduced the O 3 concentration from 112 ppm (plasma alone) to 26.2 ppm at a specific input energy (SIE) of 232 J/L. Density functional theory (DFT) calculations suggest that Co sites in CoFe 2 O 4 possess a lower O 3 adsorption energy and higher charge density potential to a higher oxygen vacancy formation tendency, promoting O 3 activation. This study provides an understanding of the mechanistic basis for the rational design of efficient plasma-catalytic systems for toluene removal.
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COMPOSITES SCIENCE AND TECHNOLOGY
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2026
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IF 9.9
Haiyang Peng,Ying Zhang,Tao Ma,Yixing Huang,Xiao Kang,Ying Li
A 2D/1D/0D carbon-magnetic heterostructure was constructed after pyrolysis. • GC/Co@CNTs-800 delivered an EAB of 6.04 GHz at 2.00 mm. • Multiscale heterointerfaces enhanced electromagnetic attenuation. Metal-organic framework (MOF)-derived electromagnetic wave absorbing materials have attracted considerable interest because of their tunable composition, rich porosity, and structural versatility. However, conventional single-MOF-derived materials often have limited metallic components and structures with a single dimensionality, which hinder the simultaneous optimization of electromagnetic wave absorption performance. In this work, a ZIF-L@ZIF-67 precursor with a MOF-on-MOF architecture was designed. Through high-temperature pyrolysis, it was converted into graphitized carbon/Co nanoparticles@carbon nanotubes (GC/Co@CNTs) composites composed of two-dimensional graphitized carbon, one-dimensional carbon nanotubes, and zero-dimensional Co nanoparticles. By tuning the pyrolysis temperature, the magnetodielectric response response of the materials was effectively regulated. The optimized GC/Co@CNTs-800 exhibited a minimum reflection loss (RL min ) of −69.4 dB at 1.85 mm and an effective absorption bandwidth (EAB) of 6.04 GHz at 2.00 mm. During pyrolysis, the in-situ formation of a conductive carbon network, magnetic Co nanoparticles, and abundant heterogeneous interfaces synergistically promoted conduction loss, magnetic loss, and interfacial polarization. As a result, the electromagnetic attenuation capability of the composites was significantly improved. This study highlights the considerable promise of MOF-on-MOF-derived architectures for electromagnetic wave absorption and offers a viable structural engineering strategy for the development of next-generation microwave absorbers. Download: Download high-res image (412KB) Download: Download full-size image
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Journal of Bioresources and Bioproducts
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2026
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IF 19.9
Limin Zhou,Mengmeng Fan,Yanyan Liu,Shuling Liu,Guozheng Dong,Ao Wang,Jong-Min Lee,Kang Sun,Baojun Li
Single-atom catalysts (SACs) have advantages such as high atom utilization and well-defined active sites, and have been extensively studied in the field of oxygen electrocatalysis. However, current strategies for tuning the M-N 4 configurations predominantly focus on local coordination environments, which still makes it difficult to simultaneously optimize the balance of adsorption energies of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) intermediates. Herein, a Zn volatilization-induced pyrolysis strategy is developed to construct Co-N 4 sites coupled with Co nanoparticles on curved N-doped biomass-derived carbon (Co NPs + SA @NC). The intrinsic curvature and defect-rich structure induce lattice distortion and electronic polarization, significantly enhancing the metal-support interaction (MSI). This curvature-enhanced MSI triggers electronic reconstruction and symmetry breaking of Co-N 4 sites, narrowing the highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) gap and facilitating electron transfer. Meanwhile, the influence of adjacent Co nanoparticles optimizes the electronic structure of Co-N 4 , improving the adsorption-desorption capacity of intermediates in the OER process. Therefore, the half-wave potential required to achieve ORR was 0.87 V, and the overpotential required to reach a current density of 10 mA/cm 2 is only 290 mV. A zinc-air battery (ZAB) based on Co NPs + SA @NC exhibited a high peak power density of 172 mW/cm 2 . This work highlights curvature-mediated MSI as an effective strategy for controlling single-atom configurations and advancing biomass-derived electrocatalysts.
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ELECTROCHIMICA ACTA
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2026
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IF 5.8
Yongzhi Zhao,Yunpu Qin,Wenhe Yu,Gengchen Bai,Jianfang Liu,Zehong Yin,Baorui Jia,Xinning Zhang,Xuanhui Qu,Mingli Qin
Trace W incorporation improved the durability of Co–Carbon catalysts. • W–S–C/W–S–O–C interfaces were formed after carbonization. • DFT indicates that WS 2 coupling strengthens C–C bonding in carbon. • Interfacial W species mitigate anodic carbon degradation during OER. Carbon-based catalysts are widely utilized in oxygen reduction reactions (ORR) and hydrogen evolution reactions (HER) owing to their great electrical conductivity and low cost. However, their use as bifunctional electrocatalysts for water electrolysis and metal–air batteries is severely hindered by carbon corrosion under anodic oxygen evolution reaction (OER) conditions. Herein, a carbon-based Co/W–Carbon electrocatalyst was synthesized via dopamine polymerization followed by high-temperature carbonization. The catalyst exhibits an overpotential of 331 mV at 10 mA cm -2 . Moreover, the addition of only a small amount of W significantly extends its stability in alkaline electrolyte by several times. Structural analyses revealed the formation of strongly coupled W–S–C/ W–S–O–C interfacial structures after carbonization. Density functional theory calculations demonstrated that coupling graphene with WS 2 promotes electron redistribution from the π-electron system to the C–C σ-bonding network, resulting in enhanced C–C bonding strength and an increased carbon vacancy formation energy. These findings reveal the dual role of WS 2 as both a catalytic component and a structural stabilizer, providing a new strategy for designing durable carbon-rich electrocatalysts. Download: Download high-res image (276KB) Download: Download full-size image
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Journal of Materials Chemistry A
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2026
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IF 9.2
Haixiang Shi,Jianming Xu,Liuyun Chen,Tongming Su,Xinling Xie,Xuan Luo,Zu-Zeng Qin,Hongbing Ji
The efficiently selective hydrogenation of carbonyls in unsaturated aldehydes by nonnoble metal catalysts is still a severe challenge. Herein, an Co nanocluster catalyst anchored on vacancy-rich Ti3C2Ox (TCOs) was designed and prepared by a simple chemical reduction method for selective hydrogenation of cinnamaldehyde to cinnamyl alcohol. The Co/TCOs-H2 catalyst showed a superior catalytic activity with a TOF of 23.6 h-1, and reached a cinnamaldehyde conversion of 96.7% and a cinnamyl alcohol selectivity of 65.5% at low cobalt loading. Further, the characterizations demonstrated that Co nanoclusters were successfully anchored on TCOs, where the exist of surface oxygen vacancies (VOs) promote their vertical adsorption properties for cinnamaldehyde. Importantly, density functional theory calculation revealed that VOs enhanced selective adsorption of C=O on Co nanocluster by modifying the outside charge density of Co atoms, resulting an increase of the adsorption energy difference for conjugated double bonds and a lower energy barrier for H2 dissociation on Co nanocluster sites. This work develops a feasible strategy for constructing highly active metal nanocluster sites on two-dimensional MXenes and provides insight into the role of VOs on MXene in metal nanocluster during hydrogenation reactions.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yuyan Deng,Yulong Hao,Shuo Feng,Xiahong Lin,Zhenglin Sun,Haiqin Sun,Qiwei Zhang
Photochromic materials have attracted considerable attention owing to their promising applications in smart displays and optical information storage. However, most photochromic materials still face challenges, such as limited coloration and low photochromic efficiency, which restrict their potential applications in multicolor displays and high-quality optical storage. In this study, Co ions were selected as a coloring agent, and introduced into YNbO 4 matrix, showing high efficient photochromism and chemical coloration properties. Under 265 nm irradiation, the photochromic efficiency increases from 45.6% (x = 0) to 71.5% (x = 0.003), while the luminescence modulation ratio rises from 33.6% to 72.2%, thereby substantially improving optical storage capability. Most importantly, Co doping expands the surface color range from pale yellow (x = 0) to green (x = 0.001) or blue (x ≥ 0.003), and the photochromic coloration changes from brown (x = 0) to dark grey (x ≥ 0.001) after 265 nm irradiation, realizing multicolor chromism. Such multicolor features rely on synergistic coupling of photochromic and chemical coloration. These results highlight the great potential of the YNbO 4 :xCo system for multicolor display and optical storage, and provide valuable insights for future design of multicolor photochromic materials.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Jinbin Lin,Bo He,Xue Li,Xiaohui Wang,Baoxue Zhou,Pedro J.J. Alvarez,Mingce Long
Selective bond activation in heterogeneous oxidation catalysis remains challenging when multiple competitive pathways coexist. In aminophosphonates, oxidative transformation is typically dominated by kinetically favored C-N cleavage, generating refractory intermediates such as aminomethylphosphonic acid (AMPA). Herein, we demonstrated that selective C-P bond activation could be achieved via active-site coordination engineering. A cobalt single-atom catalyst featuring oxygen-vacancy-linked Zr sites (Co-Ov-Zr ensemble) created a dual-anchoring microenvironment that enforces bidentate adsorption of aminotris(methylenephosphonate), elongating the C-P bond and lowering its cleavage barrier. The vacancy-modified electronic structure promoted efficient peroxymonosulfate activation and Co(IV)=O generation. Consequently, the reaction coordinate was reprogrammed, reversing intrinsic selectivity from C-N to C-P cleavage. The optimized Co-Ov-ZrO 2 /PMS system achieved a five-fold enhancement in phosphate release kinetics compared to the vacancy-free analogue while suppressing AMPA formation. This work establishes adsorption-configuration control as a strategy for designing selective single-atom oxidation catalysts.
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Materials
·
2026
·Vol. 19
·期 7
·1370
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IF 3.7
Yi Luo,Nan Li,Lingjing Yang,Jinlong Wei,Yuantao Yang,Wentao Wang,Yang Zhao,Ruidong Xu,Xuanbing Wang
The high energy consumption of lead anodes in zinc production is caused by the slow oxygen evolution reaction (OER). We made a La-Mn co-doped β-PbO2anode using electrodeposition to solve this issue. The XRD and XPS results show that adding La shrinks the lattice and changes the electron structure. This helps Mn4+change into active Mn3+and creates more active oxygen on the surface, making the reaction easier. EIS tests show that the charge transfer resistance (Rct) decreased by 4.2 times, decreasing from 147.6 Ω to 34.72 Ω at 1.0 V. The Bode phase peak also moved to a lower frequency (from 122 Hz to 0.215 Hz), proving that the electrochemically active surface area (ECSA) increased significantly. At the industrial current of 50 mA cm−2, the anode shows a low overpotential of 840 mV and a Tafel slope of 265 mV dec−1. This improved performance saves 187.10 kWh of energy per ton of zinc. Therefore, the LaMn-β-PbO2anode is a promising and energy-saving option for industrial zinc production.
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PubMed
高影响因子
CHEMICAL PHYSICS LETTERS
·
2026
·
IF 2.9
Shuting Li,Peng Su,Fang Wang,Yuanyuan Liu,Xinjing Xu
Gd 3+ -doped ceria Ce 0.8 Gd 0.2 O 1.9-δ (GDC) is a well-known electrolyte for solid oxide fuel cell technology. This study is designed to understand the influence of Ca 2+ doping in GDC on the electrical conduction behavior, in particular the electronic conductivity, of the resulting electrolytes. Using a sol-gel method, Ce 0.8 Gd 0.2-x Ca x O 1.9-δ (C x GDC; x = 0.01, 0.03, 0.05, and 0.10) electrolyte materials were synthesized and studied. It revealed that Ca 2+ doping significantly improved the total conductivity of the electrolyte and, at the same time, suppressed its electronic conductivity. At 750 °C, C 0.03 GDC has a total conductivity of 0.069 S cm −1 , 1.4 times higher than that of GDC, whilst has an electronic conductivity of 4.13 × 10 −5 S cm −1 , 81% lower than that of GDC. The electrolyte-supported C 0.03 GDC single cell delivers a maximum power density of 0.399 W cm −2 at 750 °C, more than 40% higher than the GDC single cell. Additionally, the open circuit voltage of the C 0.03 GDC single cell reaches 0.98 V at 550 °C, in contrast to the 0.90 V of the GDC cell. The superior performance of this C 0.03 GDC single cell is attributed to not only the enhanced total conductivity but also the suppressed electronic conductivity of the C 0.03 GDC electrolyte.
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COLLOIDS AND SURFACES B-BIOINTERFACES
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2026
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IF 5.9
Xiaorong Gou,Jiayi Li,Qianyuan Yu,Xinxin Hao,Shiyu Li,Yiyi Zhang,Hong Deng,Hua Guo,Xue Yang,Weiqi Zhang
Trehalose (Tr) is a naturally occurring disaccharide extensively used as a stabilizing and cryoprotective agent for protein and cell preservation. Owing to its unique bioactivities, Tr-based biomaterials have recently emerged as a promising class of functional materials for biomedical applications. In this work, we reveal that Tr can protect lysosomes from the damage caused by verteporfin (VP), a clinically used photosensitizer. Inspired by this finding, a Tr nanogel (NG) ionically crosslinked with ferric ion was designed for the enhanced photodynamic therapy (PDT) of VP using a murine 4T1 breast cancer model. The constructed Tr/VP NG demonstrates a hydrodynamic diameter of 157.1 ± 2.8 nm, effective cellular uptake and a light-induced reactive oxygen species (ROS) generation in cells. Compared with free VP, the Tr/VP NG exhibits a comparable phototoxicity but with relieved dark toxicity in vitro , which could be evidenced by a less lysosomal leakage in cells and a lower hemolytic activity. Moreover, the Tr/VP NG mediates an elongated tumor accumulation of VP and meanwhile significantly improves antitumor PDT efficacy in vivo . This Tr/VP NG highlights both the feasibility of lysosome protection to minimize undesired dark toxicity of VP and a facile approach for engineering Tr-based materials.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2026
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IF 7.8
Feng Han,Zhen Ye,Shaoze Wang,Wenfeng Shangguan,Zhi Jiang
Facet engineering is an effective strategy for enhancing the photocatalytic performance of semiconductor single crystals. However, conventional high-temperature solid-state synthesis often suffers from coupled crystallization and grain coarsening, making it difficult to simultaneously achieve high crystallinity, controlled facet exposure, small particle size, and good dispersibility. Herein, we report an integrated strategy combining solid-state recrystallization and facet engineering for the synthesis of small-sized SrTiO3:Rh single crystals with co-exposed (100)/(110) facets. Specifically, this approach employs partially crystallized SrTiO3 nanosphere precursors, which are subsequently subjected to SrCl2 molten-salt-assisted high-temperature recrystallization to enable crystal reconstruction, while suppressing excessive grain growth. The incorporation of Rh, together with the SrCl2 molten-salt environment, influences crystal growth behavior and facilitates selective facet exposure, which is associated with the formation of octadecahedral SrTiO3:Rh single crystals. The resulting particles simultaneously exhibit high crystallinity, anisotropic facet exposure, reduced particle size, and enhanced suspension stability in aqueous media. These structural features are closely correlated with improved charge carrier separation behavior and higher mass-normalized activity under low catalyst loading conditions. Compared with conventional Rh2O3-derived SrTiO3:Rh, the optimized samples exhibit significantly enhanced charge separation behavior and photocatalytic hydrogen evolution performance. Furthermore, upon Cr co-doping, the SrTiO3:Rh,Cr/BiVO4 system with the highest activity among the investigated Cr concentrations, coupled with the Fe3+/Fe2+ redox mediator, achieves an apparent quantum yield (AQY) of 4% under 420 nm monochromatic irradiation and demonstrates stable overall water splitting activity in a liquid-phase Z-scheme configuration.
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