JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Heng Dai,Qi Yu,Zhanyu Cao,Jiaxin Wang,Wenbo Sun,Jiayu Wang
Developing lightweight microwave-absorbing materials with a low filler loading, strong attenuation capability, and broad effective absorption bandwidth is an important requirement in electromagnetic protection and radar stealth. In this work, a nitrogen-doped reduced graphene oxide/Ce-doped strontium ferrite@nitrogen-doped carbon (NRGO/Ce-SrM@NC) heterointerfacial absorbing structure was constructed by hydrothermal assembly and dopamine-derived carbonization. In this system, Ce-SrM provides the magnetic response, NRGO builds a lightweight conductive network, and the NC shell acts as an interfacial bridging layer to regulate the coupling between magnetic particles and graphene sheets. Structural characterization shows abundant defect sites and close particle-sheet contact interfaces. At a filler loading of only 5 wt%, the NRGO/Ce-SrM@NC composite achieves a minimum reflection loss (RL min ) of −53.2 dB at a matching thickness of 2.6 mm and a maximum effective absorption bandwidth (EAB) of 7.22 GHz. Its excellent electromagnetic wave absorption (EWA) performance mainly originates from the synergistic effect of balanced impedance matching, conductive loss, dipole polarization, interfacial polarization, magnetic resonance, and multiple scattering. Further CST simulations show that a PEC plate coated with the NRGO/Ce-SrM@NC composite can achieve a radar cross section reduction of 41.35 dB cm⁻¹ . Meanwhile, the simulated moth-eye-inspired gradient structure based on the NRGO/Ce-SrM@NC composite extends the EAB to cover the entire 2–18 GHz range. This study provides a feasible strategy for the design of low-filler, broadband electromagnetic wave-absorbing materials and radar stealth structures.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Mengyao Ma,Mengmeng Hu,Yifan Zhu,Renjie Wang,Tongliang Wang,Jinnan Gan,Runjing Cai,Nana Dai,Ting Gao,Qiaohuan Cheng,Qianqian Chen,Huijuan Ran,Fei Peng,Qingsong Zhu
In-situ growth of Ti-MOF@rGO improves dispersion, reduces agglomeration, and facilitates electron transport. • 0.3–400 μM linear range, 0.114 μM LOD (S/N=3), selective vs UA/AA, stable/reproducible. • Synergistic Ti-MOF@rGO boosts DA adsorption and electron transfer via 2e - /2H + redox. Electrochemical detection of dopamine (DA) is critically important for the diagnosis and monitoring of neurological disorders. In this study, we present a novel composite material, Ti-MOF@rGO, synthesized in-situ through the integration of titanium-based metal-organic frameworks (Ti-MOFs) with reduced graphene oxide (rGO). This hybrid material effectively combines the abundant redox-active sites of Ti-MOF with the excellent electrical conductivity and large specific surface area of rGO, thereby facilitating efficient charge transfer and enhanced DA adsorption. The Ti-MOF@10%rGO-modified glassy carbon electrode demonstrated outstanding electrocatalytic performance for DA oxidation, exhibiting a wide linear detection range of 0.3–400 μM and a low detection limit of 0.114 μM (S/N = 3). The sensor exhibited high selectivity against common interferents such as uric acid and ascorbic acid, along with excellent repeatability, reproducibility, and cycling stability. This work presents a promising strategy for the rational design of MOF-based composites and offers a robust platform for ultrasensitive and selective electrochemical biosensing applications.
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ChemistrySelect
·
2026
·Vol. 11
·期 29
·e73937
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IF 2.3
Yingjian Liao,Wenqi Xu,Liang Zeng,Songyun Deng,Xiaomao Hu,Song Lei,Linping Chen,Li li Geng,Shu Chen
Hexavalent chromium (Cr(VI)) is a highly toxic heavy metal contaminant commonly used in industrial applications, posing significant risks to human health and environmental sustainability due to its persistence and difficulty in degradation. Transition metal carbide (MXene) is an emerging two-dimensional material that has gained considerable attention for its potential in water pollutant removal. However, poor MXene stability and limited functional groups restrict its specific adsorption of target metal ions such as Cr(VI). Herein, a novel functionalized three-dimensional MXene composite gel (M/D/P) was synthesized via a photo-induced thiol-ene click reaction using MXene as the framework material. The multithiol-functionalized framework introduces abundant thiol groups, which facilitate the reduction of Cr(VI) to less toxic Cr(III) and enable chelation of Cr(III) with the adsorbent, driven by proton depletion during reduction. The adsorption behavior follows pseudo-second-order kinetics and the Langmuir model, indicating a chemical adsorption process. The maximum removal capacity reaches 347.71 mg·g − 1 , and the gel maintains 80% of its initial adsorption capacity after five cycles. The synergistic adsorption-reduction mechanism, involving electrostatic attraction, reduction, covalent bonding, and chelation, highlights M/D/P as a promising MXene-based adsorbent for water treatment applications. Graphical A multithiol-functionalized MXene composite gel (M/D/P) is synthesized via photo-induced thiol-ene click reaction. The abundant thiol groups enable synergistic adsorption–reduction of Cr(VI) through electrostatic attraction, chemical reduction, and chelation. The material achieves 374.71 mg·g − 1 removal capacity with excellent reusability.
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ELECTROCHIMICA ACTA
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2026
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IF 5.8
Yu-Han Yuan,Jia Liang,He-Jie Wu,Gui-Fang Li,Shuang-Lin Cai,Jin-Wei Yan,Hai Huang,Ye Zeng,Ming-ming Tao,Xiao-hong Fan,Yi Li,Ding-Rong Deng,Qi-Hui Wu
F-CN@RGO presents multi-dimensional synergy between the conductive framework and heteroatom doping. • F-doping induces lattice distortion, optimizes the electronic structure, enhances redox kinetics. • It exhibits outstanding long-cycle stability, with a capacitance retention of 86.8% after 30,000 cycles. • The asymmetric supercapacitor achieves a high energy density of 87.75 Wh·kg −1 and excellent cycling stability. Supercapacitors possess exceptional capacity to transfer energy quickly, but increasing cycle stability and energy density is still a major problem that hinders their commercial applications. This study uses a one-step hydrothermal method to build and construct a fluorine F-doped three-dimensional (3D) Co 2 NiO 4 @reduced graphene oxide (RGO) heterostructure (referred as F-CN@RGO) on the nickel foam (NF) electrical collector. RGO-wrapped NF functions as 3D conductive framework that suppresses the volume strain during long-term cycling while simultaneously improving the electron transfer efficiency, electrical conductivity, and specific surface area. F-doping regulates the electronic structure, surface properties, and chemical stability of Co 2 NiO 4 @RGO. The high electronegativity of F ions accelerates the electron transfer, induces the lattice distortion of Co 2 NiO 4 @RGO, and consequently modulates its electronic structure and interfacial reaction kinetics. Electrochemical tests show that the activated F-CN@RGO (A-F-CN@RGO) has a high specific capacitance of 8.76 F·cm −2 (5 mA·cm −2 ). After 30,000 cycles, the asymmetric supercapacitor with A-F-CN@RGO and activated carbon as the electrodes retains 88.2% of its initial capacitance. By generating multi-dimensional synergistic effects with rational design structure between the substrate and active materials as well as heteroatoms and host materials, this work offers a universal technique for the controlled production of high-performance electrodes for supercapacitors. Download: Download high-res image (403KB) Download: Download full-size image
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PHYSICS AND CHEMISTRY OF THE EARTH
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2026
·
IF 4.6
Zuhur J.Q. Ali,Tawfik A. Saleh,Abbas A. Abdullahi
Polyamide/graphene oxide nanocomposite membrane developed for wastewater treatment.Newly synthesized and modified with graphene oxide. • Achieved >90% rejection of heavy metals and ∼99% removal of hydrocarbons. • Promising membrane for sustainable purification of complex wastewater streams. The contamination of wastewater with heavy metals poses significant environmental and health risks, necessitating the development of effective filtration technologies. While existing membrane filtration methods have shown promise, there remains a gap in the efficient removal of pollutants, particularly in complex wastewater mixtures. In this study, a novel polyamide-functionalized graphene oxide (GO) nanocomposite membrane was developed to address this challenge. The membrane was synthesized by integrating GO nanoparticles onto a substrate, followed by surface functionalization. The filtration performance was comprehensively evaluated through various techniques, including Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), atomic force microscopy (AFM), field emission scanning electron microscopy (FE-SEM), and X-ray diffraction (XRD). The results demonstrated exceptional removal efficiencies for heavy metals, with rejection rates exceeding 90% for cadmium, barium, and chromium ions. The study also explored the membrane's performance for separating salts, such as carbonate and sulfate ions, and organic pollutants showing a good performance for the rejection of multipollutants. These findings demonstrate the potential of the developed membrane for efficient heavy metal removal in complex wastewater systems. A visual representation of various contaminants found in industrial wastewater and their removal using the reported membrane. Download: Download high-res image (319KB) Download: Download full-size image
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Advanced Optical Materials
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2026
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IF 7.2
Xuan Li,Guowei Du,Huihui Cao,Yimin Zhou,Chenyang Li,Zicheng Wen,Zhihui Han,Fei Tang
All-inorganic phosphor composites have emerged as vital solutions for high-power solid-state lighting, circumventing the intrinsic thermo-chemical vulnerabilities and spectral instabilities of conventional polymer-encapsulated matrices. Here, we report self-supporting, ultrathin phosphor-glass composites (PGC) utilizing commercial Ca-α-sialon:Eu 2+ amber phosphors as the luminescent component. Leveraging tape-casting and low-temperature sintering, we achieve microscale control over composite thickness (117 µm) and phosphor distribution, while maintaining crystalline integrity and delivering a high internal quantum yield of 95.59%. Systematic tuning of phosphor loading reveals that photon transport—governed by multiple scattering and self-absorption—is the dominant limiter of apparent emission in the ultrathin regime, with an optimal loading identified at 20 wt.%. Furthermore, we engineer a dual-layer laminated architecture that spatially decouples light conversion from mechanical reinforcement and thermal buffering. This configuration effectively suppresses chromatic drift and improves luminous stability and efficiency retention under high-power excitation. Notably, the laminated PGC exhibit superior tensile strength, moisture resistance, and thermal dissipation without compromising luminescence performance. These results establish architecture-enabled ultrathin PGC as a promising photonic packaging platform for next-generation color-stable, high-power solid-state lighting.
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ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Xiangyi Zhang,Zihan Xing,Tong Wang,Limin Wu
Passive radiative cooling provides a sustainable, zero-energy cooling pathway, yet it faces a fundamental challenge in humid or cloudy conditions due to the blockage of the atmospheric transparency window and increased downward atmospheric radiation. Herein, we present a hierarchical Janus bilayer metafabric (TS/PLU) that synergistically combines radiative and evaporative cooling for thermal management with humidity resilience. Integrating a hydrophobic TPU/h-SiO 2 reflection layer with a hygroscopic PAN/LiCl@UiO-66 regulation layer achieves superior solar reflectance (>96%), high atmospheric-window emissivity (96.6%), and moisture capture and evaporation. Crucially, a “harvest-storage-release” mechanism is enabled by UiO-66-confined LiCl, mitigating deliquescence and salt leakage while facilitating heat dissipation even when radiative power is attenuated by high humidity. Asymmetric wettability ensures unidirectional water transport, preserving the radiative function of the hydrophobic top layer. Outdoor tests demonstrate a maximum sub-ambient temperature reduction of 13.4°C under sunny conditions, with a net radiative cooling power of 132.87 W m −2 . The LiCl@UiO-66 incorporation contributes an additional 5.1°C cooling enhancement relative to non-hygroscopic controls. Combined with mechanical robustness (≈370% elongation) and washing durability, this multimodal strategy offers a material-level proof of concept for thermal management featuring humidity resilience and shows potential relevance to personal cooling, outdoor thermal protection, and building-envelope cooling.
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Science Advances
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2026
·Vol. 12
·期 31
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IF 13.9
Yi Sun,Wen-Li Lv,Qi-Bing Xiao,Gang Wu,Xian-Wei Liu
Molecular twist-related rotational dynamics at solid-liquid interfaces governs recognition, dissipation, and barrier crossing, yet direct label-free visualization of single-molecule torsion remains challenging. Here, we present twist-encoded magnetic plasmon interferometry (TEMPi), which converts nanorod twist near a metal film into a phase-encoded, orientation-resolved optical signal. Near-field coupling between a gold nanorod and its mirror image in the film excites a localized magnetic plasmon, enabling quantitative mapping of probe twist to interferometric phase. Wide-field, label-free operation in native buffers enables real-time tracking of rotational dynamics and interfacial conformational changes. TEMPi resolves three confinement-dependent rotational regimes, distinguishes effective dual- and single-contact protein anchoring, and localizes single binding sites on the probe through twist-dependent centroid shifts. Applied to DNA hybridization, it quantifies an effective ninefold increase in torsional stiffness and an order-of-magnitude faster twisting relaxation upon duplex formation. These results establish TEMPi as a general twist-resolved metrology for probing effective interfacial molecular mechanics and designing torsion-responsive interfaces in chemistry, biology, and nanotechnology.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Xiaowen Wang,Jing Bai,Jiaying Chen,Shijie Cao,Quanquan Li,Boyu Zhang,Zhixue Wang,Hexiang Lu,Jianyou Wang,Xuesong Wang,Yunhua Xu
Ni-loaded Ce/Nb oxide catalysts (CeNb-x%Ni) were prepared and ball-milled with MgH 2 under H 2 to investigate the effects of Ni loading on sorption kinetics. The results reveal that the 40%Ni catalyst featured the most balanced behavior. MgH 2 -10%(CeNb-40%Ni) absorbed 5.516 wt% H 2 within 1 min at 350 °C and released approximately 5.6 wt% H 2 within 30 min after hydrogenation. At 150 °C, it still absorbed 3.54 wt% H 2 in 6.5 min and reached 4.921 wt% after 30 min. TPD and DSC curves suggest that the onset and main release temperatures moved to lower values, while kinetic analysis presented a much smaller apparent dehydrogenation barrier. XPS indicates the presence of Mg-H-related species, metallic/interfacial and oxidized Ni species, Ce 3 + /Ce 4+ surface states, and Nb 5+ /Nb δ⁺ -related components. These surface states, together with the refined particles and crack/pore-rich surface produced during milling and cycling, may facilitate hydrogen transfer across the MgH 2 /catalyst interface. Thus, an appropriate Ni amount in a Ce/Nb oxide matrix is important for accelerating MgH 2 absorption and desorption.
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CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Jiayu Zhang,Kun Wang,Jinglu Yu,Kaiyang Xu,Lu Yang,Jiali Rao,Shuqin Song,Yi Wang
Electrochemical H 2 O 2 synthesis via the two-electron oxygen reduction reaction (2e – ORR) offers a green alternative to the energy-intensive anthraquinone process, but its practical viability is hindered by the sluggish and low-value oxygen evolution reaction (OER) at the anode. Here, we present an energy-saving paired electrolysis strategy that replaces anodic OER with methanol oxidation reaction (MOR) using a ternary Mn-doped NiCo layered double hydroxide (Ni 0.50 Co 0.30 Mn 0.20 LDH) catalyst in situ grown on nickel foam (NF) by a one-step hydrothermal method. The optimized catalyst achieves a low MOR potential of 1.32 V RHE at 10 mA cm –2 and a formate Faradaic efficiency of 92.9%, outperforming its undoped counterpart (Ni 0.61 Co 0.39 LDH, 1.37 V RHE and 83.3%). In-situ Raman spectroscopy and density functional theory calculations reveal that Mn doping lowers the energy barrier for the Ni 2+ /Ni 3+ redox transition, facilitating the generation of catalytically active Ni 3+ species. When coupled with graphitized hydroxyl-functionalized multi-walled carbon nanotubes coated on carbon paper (CNTs@CP) as the 2e – ORR cathode in a two-electrode electrolyzer, at the operation condition of 50 mA cm –2 , the 2e – ORR||MOR system delivers a cell voltage reduction of 254 mV, enabling a 10.3% decrease in energy consumption for H 2 O 2 production, compared with the conventional 2e – ORR||OER system. Moreover, the simultaneous generation of value-added formate at the anode yields a 97.9% increase in net economic benefit. This work establishes a generalizable paired electrolysis paradigm for the decentralized, energy-efficient, and economically viable co-production of H 2 O 2 and high-value chemicals.
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Molecular Catalysis
·
2026
·
IF 4.3
Shuo Wang,Jing Ding,Yichang Pan,Hui Wan,Guofeng Guan
Chitosan-supported pyridinium ionic-liquid catalysts were prepared. • Halide, DD, and ionic-liquid loading effects were systematically studied. • Br-IL2Cs-90DD gave 95% cyclic carbonate yield at 0.5 MPa CO 2 . • The catalyst retained high activity over five consecutive cycles. • DFT revealed cooperative activation by N⁺, Br⁻, and chitosan –OH sites. Developing recyclable heterogeneous organocatalysts with clearly identifiable cooperative active sites is important for the mild and solvent-free cycloaddition of CO2 with epoxides. Herein, a chitosan-supported pyridinium ionic-liquid catalyst was constructed by covalently immobilizing bifunctional ionic-liquid moieties onto renewable chitosan through Schiff-base chemistry. The catalyst integrates pyridinium cations, Br⁻ nucleophiles, Schiff-base linkages, and chitosan hydroxyl groups into a cooperative heterogeneous catalytic environment. Among the investigated structural variables, the bromide-containing catalyst prepared from high-deacetylation chitosan (Br-IL2Cs-90DD) showed the best performance, affording 96% epichlorohydrin conversion, 99% cyclic carbonate selectivity, and 95% cyclic carbonate yield at 80 °C and an initial CO 2 pressure of 0.5 MPa within 4 h under solvent-free conditions. This performance is competitive with representative heterogeneous ionic-liquid and biomass-supported catalysts operating under mild-pressure conditions. The recovered catalyst retained 94% conversion, 98% selectivity, and 93% yield after five consecutive cycles, and post-reaction FT-IR/XPS characterization further supported the structural retention of the immobilized ionic-liquid catalyst. Characterization and density functional theory calculations support the proposed cooperative catalytic mechanism, in which the pyridinium cation and Br⁻ promote epoxide activation and ring opening, while chitosan hydroxyl groups help stabilize alkoxide and carbonate-related species. This work provides a biomass-derived immobilized ionic-liquid catalyst for metal-free CO 2 -to-carbonate conversion and offers molecular-level insight into cooperative active-site design. Download: Download high-res image (271KB) 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
Yizhe Wang,Siyue Li,Ye Yuan,Qixin Zhuang,Xiaoyun Liu,Peiyuan Zuo
The rational design of yolk–shell structured materials with integrated dielectric–magnetic synergy has emerged as a critical strategy for developing lightweight and high-performance electromagnetic wave (EMW) absorbers. Comparing to the conventional yolk–shell structures that typically rely on single cavity configuration, the air-induced dual-cavity yolk–shell structures offer both lightweight absorber design and substantial enhancements in interfacial polarization over wide frequency range. To this end, this study proposes a novel “coating-protected etching-high temperature carbonization” strategy to successfully construct an air-induced dual-cavity yolk–shell hollow Fe₃O₄@air@Co/C composite absorber. The unique nanostructure possesses two independent cavities: one within the inner hollow Fe₃O₄ core, and another between the inner Fe₃O₄ core and the Co/C shell. The dual cavities not only significantly reduce the material density but also optimize the impedance matching. Importantly, the synergistic effects of the air-induced dual-cavity interfaces (Fe₃O₄-air and Co/C-air) amplify multi-interfacial polarization and improve the absorption ability via combined magnetic and dielectric loss mechanisms. Experimental results demonstrate that the optimized absorber achieves a remarkable reflection loss of –67.21 dB and a maximum effective absorption bandwidth (EAB) of 5.12 GHz (12.08–17.20 GHz) at an ultra-thin thickness of 2.0 mm and a low filler loading of 20 wt%. Collectively, our findings provide a new design approach for constructing high-efficiency, lightweight EMW absorption materials.
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