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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高影响因子
ANALYTICA CHIMICA ACTA
·
2026
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IF 6.1
Nanke Ma,Anqi Wei,Huiling Peng,Lixia Xie,Yuan Jin,Zhengzhi Yin,Guangli Li
Background Chirality plays a critical role in drug efficacy and environmental safety. The antibacterial activity of ofloxacin resides almost exclusively in its S-enantiomer (levofloxacin, LEV), while the R-enantiomer contributes little to therapeutic effects but may pose unnecessary risks. Rapid and reliable methods for enantioselective determination of ofloxacin enantiomers are therefore essential for pharmaceutical quality control, food safety monitoring, and environmental analysis. However, existing electrochemical sensors often suffer from limited enantioselectivity and insufficient sensitivity. To address this challenge, a novel enantioselective electrochemical platform is developed. Results A β-cyclodextrin/cerium-doped copper metal-organic framework/carboxylated multi-walled carbon nanotube composite (β-CD/Ce-doped Cu-MOF/MWCNTs-COOH) was fabricated on a glassy carbon electrode. The sensor achieves discrimination of ofloxacin enantiomers with an I L /I D ratio of 3.39. DFT calculations at pH 4.0 reveal that β-CD binds LEV with higher adsorption energy (−63.8 kJ/mol) than DEX (−58.3 kJ/mol), confirming the superior response for LEV originates from stereospecific inclusion. Quantitative analysis of LEV shows two linear ranges (0.03–1 μM and 1–10 μM) with a low detection limit of 0.01 μM. The sensor also enables accurate determination of LEV percentage in enantiomer mixtures across 0–100%. Excellent selectivity against common interferents, good reproducibility (RSD = 0.98%), repeatability (RSD = 1.26%), and long-term stability (95.2% retention after 21 days) are demonstrated. Practical applicability is validated by detecting LEV in commercial eye drops, honey, and tap water with satisfactory recoveries (96.0–108.0%). Significance and novelty This work presents the first application of Ce-doped Cu-MOF/β-CD/MWCNTs-COOH composites for the enantioselective electrochemical sensing of ofloxacin, a chiral fluoroquinolone antibiotic. The synergistic combination of high conductivity, abundant catalytic sites, and stereospecific host-guest recognition provides a generalizable strategy for high-performance enantioselective sensing, with promising applications in pharmaceutical, food, and environmental analysis.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
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IF 4.6
Cheng Xiong,Liyin Bu,Xue Bai,Yongzhong Fu,Quan Wang
Cts/Ce-UiO-66 was developed for sensitive ratiometric detection of Hg 2+ . • Intrinsic Ce 4+ /Ce 3+ redox couple in MOF provides a stable reference signal. • Chitosan coating promotes Hg 2+ enrichment and stabilizes the modified film. • The sensor showed a 3.73 nM LOD and 95.0%–105.3% recovery in pond water. Mercury pollution remains a serious environmental concern because of its toxicity, persistence, and bioaccumulation in aquatic environments. Herein, a ratiometric electrochemical sensor for Hg 2+ detection was developed using a chitosan/Ce-UiO-66 (Cts/Ce-UiO-66) composite. Ce-UiO-66 was used as a redox-active sensing scaffold. Its porous framework may provide accessible interfacial sites that may contribute to Hg 2+ accumulation, while the intrinsic Ce 4+ /Ce 3+ redox response provides a built-in electrochemical signal for internal normalization under controlled measurement conditions. Chitosan was introduced as a film-forming matrix. The amino and hydroxyl groups of chitosan may contribute to Hg 2+ interfacial preconcentration, while the polymer matrix improves the stability of the modified film. The integration of the proposed Cts-assisted Hg 2+ interfacial accumulation and the intrinsic Ce-related normalization signal enabled ratiometric Hg 2+ quantification. Under optimized differential pulse voltammetry conditions, the sensor exhibited a linear response toward Hg 2+ over the concentration range of 0.10–3.00 μM, with a limit of detection of 3.73 nM. The sensor was further evaluated in a fish-pond water sample, achieving recoveries of 95.00–105.33% at the tested spiking levels. These results support the preliminary feasibility of the Cts/Ce-UiO-66-based ratiometric sensor for Hg 2+ determination in the tested fish-pond water matrix under the present experimental conditions. Scheme 1. Schematic illustration of the preparation and sensing processes of Cts/Ce-UiO-66/GCE. Download: Download high-res image (108KB) Download: Download full-size image
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2026
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IF 7.1
Yong-hong Niu,Yuan Tian,Lifei Yang
Hydrogen-rich syngas was produced from co-gasification of CS and CG. • 4Ce-8Ni/C-CaO markedly enhanced H 2 formation and syngas quality. • The maximum H 2 content reached 59.71 mol%. • Ce promoted Ni dispersion, oxygen vacancy formation, and coke resistance. The catalytic co-gasification of agricultural residues and coal-derived solid wastes offers an industrially promising route for converting low-value carbon resources into hydrogen-rich syngas. In this study, a Ce-Ni/C-CaO composite catalyst was prepared by impregnation and applied to the steam-assisted co-gasification of corn stover (CS) and coal gangue (CG) in a two-stage fixed-bed system. The effects of metal loading, feedstock ratio, temperature, and steam flow rate were investigated, the structure-performance relationship of the catalyst was further examined using XRD, SEM/BET, TEM/STEM-EDS, XPS, H 2 -TPR and O 2 -TG analyses. Under the optimal conditions of CS:CG = 5:5, pyrolysis at 850 ℃, reforming at 900 ℃, and a steam flow rate of 1 mL/min, the 4Ce/8Ni-C/CaO catalyst achieved an H 2 content of 59.71 mol% and a total gas yield of 19.13 mmol/g and an H 2 /CO ratio of 5.22. Characterization results indicated that the Ce species regulated the distribution of surface oxygen species, enhanced oxygen mobility, promoted the Ce 4+ /Ce 3+ redox cycle, and influenced the evolution of catalyst pore structure during the reaction. Download: Download high-res image (221KB) Download: Download full-size image
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MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Haiyan Wu,Jianlei Wu,Nian Huang,Jean-François Masson,Haifeng Zhou,Wenjuan Zhou,Wei Lin,Guobin Liang
A sensitive ratiometric electrochemical strategy for MMC detection is developed. • Polythionine serves as an internal reference for improved response stability. • Ce-Ni-MOF/MWCNTs enhance interfacial electron transfer. • Molecular imprinting enables selective MMC recognition. • MMC detection is validated by UPLC-QTOF-MS in water samples. Mitomycin C (MMC) is a widely used antitumor antibiotic, and its rapid and selective detection is crucial for monitoring its occurrence in environmental water samples. In this work, a ratiometric electrochemical sensor was constructed by sequential modification of a bimetallic Ce-Ni-metal-organic framework (Ce-Ni-MOF)/multi-walled carbon nanotube (MWCNTs) composite, polythionine (pThi) and a molecularly imprinted polymer (MIP) on a glassy carbon electrode. The Ce-Ni-MOF/MWCNTs composite facilitated electron transfer, contributing to the enhanced sensitivity of the sensing platform. The pThi was electropolymerized onto the modified electrode surface to provide an internal reference signal, while the ratiometric response was achieved through two electrochemical channels, with the [Fe(CN)₆] 3−/4 − redox probe serving as the response signal and the pThi signal as the reference, enabling effective correction of measurement variations. Under optimized conditions, the sensor exhibited a linear response to MMC over the concentration range of 0.1–100 nM, with a low detection limit of 0.046 nM and a limit of quantification of 0.075 nM. Owing to the specific molecular recognition of the MIP layer and the internal reference function of pThi, the proposed sensor demonstrated satisfactory selectivity, repeatability, reproducibility and stability. Furthermore, the sensor was successfully applied to the determination of MMC in water samples, achieving recoveries of 87–112%. The analytical performance of the proposed sensor was further validated by comparison with the results obtained using ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS). This work presents a reliable and sensitive ratiometric electrochemical sensing strategy and demonstrates its feasibility through a proof-of-concept study for MMC detection in environmental water samples. Download: Download high-res image (304KB) Download: Download full-size image
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MICROCHIMICA ACTA
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2026
·Vol. 193
·期 7
·455
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IF 5.4
Zhao Zhenghong,Xu Yue,Xu Shuzhen,Zhang Lianming,Li Jianping
The detection of carbohydrate antigen 19 − 9 (CA19-9), a critical serum marker for gastrointestinal malignancies, is particularly challenging because of its typically low concentration and substantial matrix interference, creating a critical demand for improved detection technologies. Herein, we rationally designed and synthesized a nanozyme with dual-ligand cerium-organic framework (Ce-MOF-BN) nanozyme for glycosyl-imprinted colorimetric biosensing via a one-pot method. The crystalline porous framework is densely functionalized on its surface with spatially accessible amino and boronic acid groups, enabling the recognition and oriented immobilization of imprinting templates. A well-defined core–shell molecularly imprinted composite was successfully fabricated through the systematic optimization of the ligand ratio. The composite exhibits intrinsic oxidase-like activity without requiring H 2 O 2 , and the molecularly imprinted polymer (MIP) shell supplies specific cavities for the highly selective recognition of CA19-9. Under optimized assay conditions, the sensor achieves the quantitative detection of CA19-9 across a broad linear range of 0.0001–100 U/mL, with a limit of detection as low as 2.7 × 10 − 5 U/mL. This work provides valuable insights for designing next-generation high performance biomimetic sensing materials and advancing their clinical diagnostic applications. Graphical The alternative text for this image may have been generated using AI.
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Ji Zhou,Xin Feng,Yisha Huang,Runmin Mao,Meitong Ye,Haohang Zou,Yigang Yan,Ding Zhu,Chaoling Wu,Lishan Peng,Yao Wang
Cerium(III) oxygenated domain has been successfully decorated on the surface of PtCo particles. • The control of *CHO adsorption at Pt–O–Ce(III) interface achieves a non-CO pathway for MOR. • The *HCOOH deprotonation kinetics governed by the coverage of cerium(III) oxidation domain affects the overpotential of MOR. • The Ce-PtCo/C catalyst achieves a mass activity that is 4.8 times as high as that of Pt/C. The poisoning of *CO remains a longstanding challenge for Pt-based catalysts in methanol oxidation reaction (MOR). This study demonstrates that the non-CO pathway is governed by the moderate adsorption of *CHO species and the ability to rapidly oxidize intermediate, both of which can be fulfilled by the Pt-O-Ce(III) interface rather than Pt-O-Ce(IV). In contrast to traditional CeO 2 -supported Pt-based catalyst, this surface-modified Pt-based catalyst has been constructed with abundant Pt-O-Ce(III) interface, providing stable and sufficient active sites to simultaneously optimize the above two factors to catalyze MOR with non-CO pathway. Furthermore, we first reveal that the coverage of this Pt-O-Ce(III) interface is crucial. By rationally regulating the coverage of cerium(III) oxygenated domains, we modulate the thermodynamic adsorption properties of key intermediate species without affecting the subsequent deprotonation kinetics of *HCOOH, thereby achieving the maximum leverage. This novel catalyst steering the non-CO pathway shows promising application potential in actual DMFCs. Download: Download high-res image (137KB) Download: Download full-size image
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高影响因子
FOOD RESEARCH INTERNATIONAL
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2026
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IF 8.8
Ke Han,Jiankang Ren,Boyan Sun,Xiaomei Wang,Qian Ran,Haiyang Jiang
A novel phage HH3 of E. coli was isolated and characterized. • A colorimetric sensor was developed for E. coli detection within 35 min. • The biosensor shows high sensitivity and accuracy in various food and water matrices. • The biosensor exhibited a wide linear range and a low LOD of 3.2 CFU/mL. • It distinguishes viable E. coli from dead cells, beyond conventional methods. A phage HH3-functionalized Ce-UiO-66-NH₂ nanozyme-based colorimetric biosensor was developed for the quantification of viable Escherichia coli ( E. coli ), overcoming the drawbacks of slow detection and inadequate live/dead bacterial discrimination in conventional analytical methods. The proposed platform achieves target detection within 35 min, with a low limit of detection (LOD) of 3.2 CFU/mL and satisfactory spiked recoveries ranging from 82.75% to 122.06%. Mechanistically, Ce-UiO-66-NH₂ exhibits intrinsic oxidase-like activity that directly catalyzes the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to blue-colored oxTMB. The color intensity of this chromogenic reaction is positively correlated with E. coli concentration, enabling quantitative analysis. Benefiting from the specific recognition capability of phage HH3, the biosensor shows negligible responses to non-host bacteria and heat-inactivated E. coli . This distinctive advantage cannot be achieved by antibody- or PCR-based strategies. This nanozyme-phage platform outperforms most reported sensors and possesses promising potential for rapid and selective quantification of viable E. coli in complex food and environmental matrices. Download: Download high-res image (252KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Zhifang Liu,Le Liu,Kunxiang Deng,Jiejun Li,Caiyu Ge,Xiang Ye,Yixi Xie,Pengcheng Zhao,Junjie Fei
Cotton-derived carbon coupled with Ce-doped ZnO via in-situ pyrolysis. • Portable Ce-ZnO-CNF@CC/SPE sensor was developed for on-site CPZ detection. • DFT verified optimized electronic structure and accelerated charge transfer. • Ultrasensitive response with a low limit of detection. • Reliable recovery in real samples for environmental monitoring. On-site monitoring of the emerging organic pollutant chlorpromazine (CPZ) is severely limited by the absence of low-cost, portable, and high-performance sensors. Herein, a disposable screen-printed sensor (Ce-ZnO-CNF@CC/SPE) was fabricated by in-situ growing Ce-doped ZIF-8 on cotton-derived carbon, followed by a one-step pyrolysis strategy. Density functional theory (DFT) calculations confirmed that trace Ce doping induces robust p-d-f orbital hybridization with the host lattice without structural disruption. The introduction of Ce 4f impurity levels narrows the band gap and significantly elevates the density of states near the Fermi energy. This robust electronic modulation accelerates charge-transfer kinetics and optimizes the CPZ adsorption affinity. Under optimized conditions, the fabricated sensor exhibited a remarkably broad linear range and an ultra-low limit of detection, along with excellent anti-interference, reproducibility, and stability. Furthermore, highly accurate and reliable recoveries were achieved in complex real-world matrices, including human serum and environmental water samples. This work provides a reliable portable platform for on-site CPZ monitoring and establishes an electronic structure-activity paradigm for designing highly dispersed, biomass-derived carbon-based sensors. Download: Download high-res image (151KB) Download: Download full-size image
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高影响因子
Journal of Physical Chemistry C
·
2025
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IF 3.2
Yanan Qiao,Wenqin Yang,Daqian Xiao,Houde She,Xiaoping Chen,Jingwei Huang,Lei Wang,Qizhao Wang
Titanium dioxide (TiO2) is considered a promising metal oxide due to its good stability and appropriate conduction band potential. However, photocatalytic carbon dioxide reduction solely with TiO2 is still limited by the low solar energy conversion efficiency. To enhance the photocatalytic carbon dioxide reduction performance, researchers synthesized a composite material based on Er-doped TiO2 and Ce-modified UiO-66(Zr) using a simple solvent evaporation method. The experimental results reveal that compared with pristine UiO-66, this composite material exhibits a significantly improved CO2 conversion rate and product selectivity. The excellent activity of this catalyst is attributed to the direct Z-type heterojunction, which greatly improves photogenerated charge separation. Furthermore, UiO-66 (Zr/Ce)/Er-TiO2 (henceforth U1(0.5% Er-T3)) composite material exhibited excellent cycling stability in five consecutive stability tests, indicating long-term application potential. This research underscores the importance of designing and modifying MOF-based photocatalysts for efficient CO2 reduction and provides valuable insights for the development of sustainable energy conversion systems.
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高影响因子
DYES AND PIGMENTS
·
2025
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IF 4.2
Xiang-Yi He,Gui-Xin Guo,Qing Li
This study introduces a dual-mode sensing platform based on a cerium-based metal-organic framework (UIO-66-NH 2 (Ce)) that exhibits dual-enzyme-like activity for the sensitive and selective detection of tetracycline (TC) in water and milk. It employs feedback-regulated dual-enzyme cascades along with Ce 3+ /Ce 4+ redox-mediated ligand-to-metal charge transfer (LMCT) to achieve signal inversion in both colorimetric and fluorescence outputs. The phosphatase-like activity of UIO-66-NH 2 (Ce) hydrolyzes L-ascorbyl-2-phosphate (AAP), resulting in the generation of ascorbic acid (AA), which subsequently reduces Ce 4+ to Ce 3+ within UIO-66-NH 2 (Ce). This reduction suppresses its oxidase-like activity while enhancing fluorescence through LMCT inhibition. In the presence of TC, the phosphatase-like activity is selectively inhibited, thereby restoring Ce 4+ -driven oxidase activity and quenching fluorescence. The platform offers broad detection ranges, low limits (5.95 nM fluorescence, 17.54 nM colorimetry), high selectivity, and real sample applicability, with smartphone-based analysis via RGB signals for rapid, on-site testing, aiding environmental and food safety monitoring.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
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IF 6
Kaiyun Li,Shuo Huang,Ziang Luo,Liye Ding,Jing Yang,Li Ma,Hongyun Jin
High-entropy zirconates represent one of the most promising thermal barrier coatings (TBCs) materials. In this work, high-entropy fluorite zirconates were synthesized via a reverse coprecipitation route, and their structural, mechanical, and thermal properties were systematically evaluated. All compositions crystallized into single-phase fluorite structure. Sc incorporation enhances hardness, while Ce enrichment promotes thermal expansion behavior. Notably, the Ce-Sc co-doped composition ( x = 0.1) achieves a synergistic optimization of properties, exhibiting low grain growth rate (0.0437 μm·h -1 ), high fracture toughness (1.64 MPa·m 1/2 ), a desirable thermal expansion coefficient (11.65 × 10 -6 K -1 , RT-1500 °C), and ultralow thermal conductivity (0.93 W·m -1 ·K -1 at 1500 °C). The markedly reduced thermal conductivity originates from enhanced phonon scattering induced by severe lattice distortion in the high-entropy fluorite lattice. These findings highlight Ce-Sc co-doping as an effective strategy to simultaneously optimize mechanical and thermal behavior, making the ceramic a strong candidate for advanced TBCs applications under extreme environments.
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