SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Qing Kang,Tong Lin,Jingbo Jiao,Yidi Liu,Yurong Guo,Chenjing Ma,Xinjun Du,Shuo Wang
Salmonella typhimurium ( S. typhimurium ) contamination has become the main source of foodborne diseases and has substantial effects on human well-being. Herein, we present a nucleic acid-responsive colorimetric biosensor for ultrasensitive detection of S. typhimurium , integrating a multifunctional Fe 3 O 4 @Zr-MOF/GOx nanoprobe with exponential amplification reaction (EXPAR). The system integrates glucose oxidase (GOx) encapsulated within a Zr-based metal-organic framework (Zr-MOF) modified with magnetic Fe 3 O 4 nanoparticles. In the presence of S. typhimurium , the EXPAR reaction is triggered, and the controlled release of GOx is achieved by DNA strand displacement. The detection mechanism leverages GOx-catalyzed glucose oxidation to generate H 2 O 2 , which oxidizes 3,3’,5,5’-tetramethylbenzidine (TMB) for colorimetric signal readout. The biosensor demonstrates high specificity for S. typhimurium , with a detection limit of 2.26 CFU mL⁻¹ , and practical applicability in spiked milk samples, achieving recoveries of 89.6–111.5 %. The strategy employing stimuli-responsive DNA/MOF composites demonstrated significant potential in food quality monitoring and analysis.
研究领域:
微生物学
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食品安全
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生物传感器
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分子诊断
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纳米生物技术
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分析化学
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CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Yumin An,Mingyao Song,Jiabao Xu,Yongshuai Xie
In this paper, Ce-Zr oxide ceramic fiber aerogels (CZOf) with effective thermal insulation properties were successfully prepared by a simple two-step method of solution blow spinning and pyrolysis. In the spinnable precursor cerium-zirconium carboxylate, the organic carboxylic acid ligands and metal inorganic salts enhanced its structural stability through coordination interactions. The effect of thermal treatment temperature and Ce doping amounts on the crystal structure of CZOf were analyzed based on XRD. At the same time, the microstructures of the CZOf heat treated at different temperatures were analyzed by SEM in detail. In addition, CZOf exhibited a compressive stress of 24.9 kPa under 80 % compressive strain, and still showed a compressive stress of 20.2 kPa after 20 compression cycles. The room-temperature thermal conductivity of CZOf was in the range of 31.4–38.3 mW m −1 K −1 . The CZOf with a thickness of 10 mm could reduce the hot surface temperature from 1200 °C to about 210.5 °C after 10min, demonstrating excellent thermal insulation performance.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Zexian Xu,Wen Zhu,Weixing Liu,Wenbo Liu,Zican Liu,Ken Chen,Kang Li,Peiqi Lun,Jiawei Zhu,Muhammad Idrees,Saima Batool
The garnet-type Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) is considered a promising solid-state electrolyte (SSE) due to its high ionic conductivity and electrochemical stability. However, the surface of LLZTO easily reacts with H 2 O and CO 2 in the air, forming a passivation layer of Li 2 CO 3 . This reaction further deteriorates the interface between LLZTO and the Li anode, resulting in poor wettability. Consequently, significant gaps form between LLZTO and the Li anode, leading to uneven deposition of Li during the cycling. Li dendrites can grow into these gaps, eventually penetrating the electrolyte and causing a short circuit in the battery. In this study, a surface modification method is investigated, where a thin film of titanium is deposited onto the surface of LLZTO electrolyte tablets using magnetron sputtering. The effects of magnetron sputtering deposition titanium film process parameters—chamber pressure, bias voltage, and temperature—on the electrochemical properties of button cells were investigated. The results indicated that LLZTO electrolyte tablets coated with titanium exhibited low interfacial resistance, high cycle stability, and significant inhibition of Li dendrites under optimized conditions of 1.0 Pa chamber pressure, 100 V bias voltage, and 150 ℃ temperature. Under these conditions, the interface resistance decreased significantly from 1437.9 Ω to 190.19 Ω. Additionally, the Li symmetric cell assembled with the titanium-coated LLZTO electrolyte tablet demonstrated stable cycling for over 1200 h at 25 ℃ under a current density of 0.1 mA·cm −2 .
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Jiawei Xie,Yaoying Li,Jia Li,Zhiping Wu,Yaoxuan Huang,Haifu Huang,Xianqing Liang,Guangxu Li,Peilin Qing,Dan Huang,Haizhen Liu,Zhiqiang Lan,Wenzheng Zhou
Lithium-sulfur (Li-S) batteries have emerged as one of the most promising rechargeable energy storage systems, owing to sulfur’s high theoretical specific capacity (1675 mAh g -1 ) and the battery’s ultrahigh energy density (2600 Wh kg -1 ). Nevertheless, their commercialization remains critically hindered by poor cycling durability, primarily stemming from two challenges: the shuttle effect of lithium polysulfides (LiPSs) between electrodes and the substantial volume expansion/contraction of the sulfur cathode during charge-discharge cycles. To address this issue, multifunctional composite material, MXene/CNT-1Zr, was prepared by a hydrothermal method as host material for sulfur in Li-S batteries. The enhancement of the electrical conductivity of sulfur is facilitated by the carbon nanotubes (CNTs), which also disperse and hold MXene to form a 3D framework. The in-situ loaded nano-ZrO 2 by hydrothermal method exhibits robust catalytic activity of the host material, facilitates the host to have a high-intensity chemisorption capacity for polysulfides, which effectively inhibits the shuttling effect of sulfur, thereby improving the cycling stability of batteries. Due to the multifunctional synergistic effect of framework structure, good conductivity, high specific surface area, strong adsorption ability for polysulfides, and strong catalytic activity of ZrO 2 nanoparticles, S@MXene/CNT-1Zr electrode material exhibited excellent cycling stability. The initial discharge capacity of S@MXene/CNT-1Zr at 1.0 C current was 904.8 mAh g -1 when the areal sulfur loading is 2.0 mg cm -2 , and the residual discharge capacity was 381.1 mAh g -1 after 1000 cycles, with a capacity retention rate of 43.6% and a decay rate of only 0.057% per cycle. The multifunctional MXene/CNT-1Zr composite developed in this study shows potential for use as cathode material in Li-S batteries, offering effective solutions to the challenges encountered by these batteries.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Yi Xiang,Zidan Mei,Lulu Zhou,Yue Li,Yongdong Chen
The hydrogenation of CO2 to light olefins is a promising method for CO2 resource utilization. Tandem catalysts composed of metal oxides and zeolites have been widely studied for the hydrogenation of CO2 to light olefins, but there are bottleneck problems in terms of CO2 conversion and light olefins yield. ZnO-ZrO2 catalyst is extensively employed in CO2 hydrogenation because of its excellent stability at high temperatures, but there is still a "seesaw" problem between the CO2 conversion and light olefins selectivity. In addition, the synergetic effect between Zn and Zr sites on the reaction process remains unclear. In this work, a series of ZnO-ZrO2 catalytic materials with various Zn: Zr ratios were synthesized by co-precipitation, and the interaction between Zn and Zr could be regulated by altering the Zn: Zr ratio. XRD and TEM results confirmed the successful synthesis of ZnO-ZrO2 composite oxide and the existence of a certain interaction between Zn and Zr. CO2-TPD, H2-TPR and XPS results indicated that the interaction between Zn and Zr could improve the hydrogenation capacity of the catalyst and also induce the generation of abundant oxygen vacancies to effectively promote the adsorption and activation of CO2. Catalytic performance results showed that ZnO-ZrO2(1:4)/SAPO-34 exhibits the best CO2 to light olefins activity with a CO2 conversion rate of 26.4% and a C2=-C4=selectivity of 72.6%. This work provides a feasible strategy for rational designing and optimizing of CO2 hydrogenation catalyst.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Yujia Zhao,Xianquan Li,Jifeng Pang,Wenguang Yu,Peifang Yan,Yang Su,Lin Li,Mingyuan Zheng
Catalytic conversion of bio-ethanol (EtOH) into 1,3-butadiene (1,3-BD, ETB) represents a low-carbon technology contributing to the sustainable production of renewable 1,3-BD. However, the low selectivity towards 1,3-BD and poor stability of catalysts hinder practical applications of the ETB process. In this work, we presented a novel Zn-Zr catalyst supported on dendrite-structured mesoporous silica (DSMS). Compared to the typical meso- or micro- porous materials such as SBA-15, meso-SiO 2 and Silicate-1 supported catalysts, the Zn-Zr/DSMS catalysts exhibited outstanding catalytic performance and exceptionally high stability in the ETB reaction. Over the representative 0.5%Zn2%Zr/DSMS catalyst, selectivity of 1,3-BD > 65 % and EtOH conversions of 72 %–100 % were obtained at temperatures in a wide range of 350–400 °C. More attractively, the distinguished performance was stable in a long time on stream of 172 h, and able to be effectively restored by calcining the spent catalyst. Systematic characterizations revealed that Zn and Zr species were highly dispersed on the DSMS support nearly at an atomic level, forming abundant Lewis acid sites without Bronsted acidity. This may account for the exceptionally high activity and 1,3-BD selectivity over the 0.5%Zn2%Zr/DSMS catalyst. The unique dendritic structure of the catalyst played important roles in stabilizing the catalytic performance. Correlated to the results of in-situ spectroscopy and conditional experiments, the roles of active sites and the contribution of the catalyst structure were proposed for the ETB process over the Zn-Zr/DSMS catalysts.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Huadong Fu,Yong Xie,Rui Chen,Wenzhen Qin,Xiu Wang,Yan Qin
Designing multifunctional integrated materials for thermal protection and microwave absorption in extreme environments is significantly challenging. In this work, surface-hydroxylated multiwalled carbon nanotubes (OH-MWCNTs) were incorporated into silicon-zirconium (CNTs/Si-Zr) hybrid phenolic aerogel to fabricate lightweight composites having a density of 0.42 g/cm 3 and thermal conductivity of 0.130 W/(m·K). The OH-MWCNTs enhanced the graphitization of pyrolytic carbon and promoted in situ formation of ZrO 2 /SiC multiphase ceramic layers during ablation, demonstrating an ultralow linear ablation rate of 0.034 mm/s under oxyacetylene flame at 2.0 MW/m 2 . The hierarchical porous structure of the hybrid aerogel composites, combined with the encapsulation mosaic architecture of OH-MWCNTs and ceramic-enriched matrices, facilitated multiple electromagnetic wave scattering and interfacial polarization. Consequently, the OH-MWCNTs incorporated CNTs/Si-Zr aerogel composites exhibited broadband microwave absorption, covering 100 % of the Ku-band and 50 % of the X-band. This work demonstrates a synergistic ceramic-forming strategy to integrate thermal protection and microwave absorption in a single material, advancing the development of multifunctional aerogel-based composites for extreme environment applications.
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ADSORPTION SCIENCE & TECHNOLOGY
·
2024
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IF 2.8
Yinghao Zhuang,Shuai Sun,Kai Jia,Lei Shi,Xiangshan Yang
Thorium is a promising nuclear fuel; however, even a small amount in nuclear wastewater can cause significant radioactive pollution. Therefore, it is urgent to develop effective adsorbents for the efficient removal of thorium to solve this problem. Herein, the phytic acid modification of carboxylated Zirconium-based metal-organic framework materials (UiO-66-COOH-PA) has been obtained by rapid high-temperature carbonization, which exhibits excellent performance in removing thorium (IV) in acidic aqueous solutions. The maximum adsorption capacity of UiO-66-COOH-PA-2 (with 40% mass ratio of phytic acid) in solution reaches 315.5 mg/g at a pH of 4, which is more than twice that of the unmodified Zr-based metal organic framework (MOF) material. The adsorption kinetics of UiO-66-COOH-PA on thorium has been analyzed using two different isothermal adsorption models, the Langmuir and Freundlich isotherm adsorption models. It turns out that the Freundlich model is more suitable for the data. The thorium adsorption process reaches dynamic equilibrium very quickly, while the adsorption dynamics of UiO-66-COOH-PA on thorium follows the pseudo-second-order adsorption kinetic model. The excellent adsorption performance of UiO-66-COOH-PA-2 at low pH values indicates that adsorption material containing phosphorus is suitable for the removal of thorium especially in acidic systems. It also exhibits excellent selectivity (up to 90.2%) for Th(IV) adsorption in the presence of several coexisting rare-earth ions. Overall, the integration of phosphorus-modified in Zr-MOFs represents a significant advancement in thorium adsorption technology, offering a pathway toward more effective management of radioactive acidic waste liquid.
研究领域:
环境科学
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核化学
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高影响因子
ELECTROCHIMICA ACTA
·
2021
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IF 6.901
Na Li,Yaru Peng,Zeng Chen,Wenjuan Xiong,Jiaqi Sun,Yiming Chen,Putao Zhang,Meiyue Liu,Shengjun Li
The electro-deoxidation of MgO does not proceed efficiently due to the electrical insulation properties of MgO and large molar volume of metallic magnesium. In this experiment, an attempt was done to prepare Mg-Zr alloy from their oxides using the method of electro-deoxidation. The electrochemical mechanism of the deoxidation process of MgO, ZrO 2 and MgO-ZrO 2 composite was studied through cyclic voltammetry using metallic cavity electrode (MCE). There was an intermediate phase (Zr 3 O) in the reduction process of ZrO 2 . The electro-deoxidation of MgO occurred for MgO-ZrO 2 composite in CaCl 2 -NaCl molten salt. Moreover, the electro-deoxidation of MgO was promoted by the addition of polyvinyl butyral (PVB). The formation of metal phase Mg was confirmed by XRD, EDS, Raman spectroscopy, and inductively-coupled plasma spectroscopy. The electro-deoxidation products showed significant differences with the concentration of PVB and the ratio between MgO and ZrO 2 . The electro-deoxidation of MgO and ZrO 2 was favorable when the PVB concentration was 5.0% (wt.%). Pure metal phase of Mg-Zr alloys was formed when the molar ratio of MgO and ZrO 2 was 1:2. The atomic fraction of Mg in the electrolytic product was ca. 28.0 mol.%. This work shows that MgO could be directly electro-deoxidized to Mg without the formation of intermediate phase oxide.
研究领域:
材料科学
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冶金工程
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无机化学
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电化学
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金属合金制备
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Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 21
·12599-12608
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IF 10.7
Yiming Yang,Jiachen Lu,Xinyu Zhang,Yanuo Shi,Peng Du,Xiao Ling,Nan Yang,Qianli Chen
Y-doped Ba(Zr,Ce)O3 (BZCY) proton conducting ceramics have attracted extensive attention because of their promising applications as electrolytes for intermediate-temperature proton ceramic electrochemical cells. The proton conductivity of BZCY is governed by their lattice volume and crystal symmetry; however, systematic studies of the competition between these two factors are lacking, hindering further improvement of their proton conductivity at low and intermediate temperatures. In this work, the crystal symmetry of BZCY epitaxial films deposited on NdGaO3 (110) is compared to that of polycrystalline bulk BZCY based on Raman spectra. The Raman signal of BZCY epitaxial films is amplified using surface-enhanced Raman spectroscopy and subsequently extracted utilizing the nonnegative matrix factorization method. The relative Raman intensity ratio of the BO6 octahedra motion to the Ba-BO6 relative motion in the ABO3 structure indicates that as the Ce content increases, the crystal symmetry of polycrystalline bulk BZCY decreases, whereas that of the epitaxial films on NdGaO3 remains consistently lower compared to bulk BZCY. The relationship between the activation energy and relative Raman intensity of epitaxial films and bulk BZCY indicates quantitatively that higher activation energy is observed in the crystal structure with lower symmetry. This work suggests that crystal symmetry has a predominant effect on the activation energy of BZCY. The results provide a deeper insight for developing proton conducting electrolyte membranes with high proton conductivity and low activation energy.
研究领域:
材料科学
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固体离子学
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光谱学
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能源材料
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陶瓷电解质
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DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2026
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IF 5.9
Shuyan Qi,Yang Wang,Ling Guan,Xu Hu,Haiyang Li
This study addresses antibiotic water pollution by synthesizing Zr-doped Bi₂₄O₃₁Cl₁₀ (Bi₂₄(₁₋ₓ)Zr₁₈ₓO₃₁Cl₁₀) photocatalysts via hydrothermal method for tetracycline hydrochloride (TC-HCl) removal. Zr doping ratios (6–14%) were systematically investigated, with the optimal BZOC4 (12% Zr) degrading 91.24% of 20 mg/L TC-HCl within 120 min under 500 W xenon lamp irradiation (pH = 9). Its reaction rate constant (0.0239 min −1 ) is triple that of pristine Bi₂₄O₃₁Cl₁₀. Zr doping reduces the band gap from 3.12 eV to 2.8 eV, improves visible light utilization (absorption edge red-shifted to 525 nm), accelerates electron transfer, and reduces e − /h + recombination—supported by UV –Vis DRS, PL, and electrochemical tests. Superoxide radicals (O₂ − ·) and holes (h + ) are primary active species, confirmed by radical trapping and ESR. TOC analysis confirms 32.4% mineralization of TC-HCl to CO₂ and H₂O.This work offers new design strategies for bismuth halide-based photocatalysts in antibiotic remediation by integrating structural regulation and electronic modulation via Zr doping.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Fangfang Li,Jinjin Wang,Ying-Hua Zhou
Metal-organic frameworks (MOFs) possess highly tunable structures, making them promising heterogeneous catalysts for efficient CO 2 conversion reactions. In this work, cerium-modified zirconium-based metal-organic frameworks (ZrCe-UiO-66) were engineered and post-synthetically functionalized with dicationic ionic liquid moieties, enabling the simultaneous introduction of strong Lewis acidic sites and nucleophilic ionic liquid units without the need for external co-catalysts. The resulting ZrCe 0.5 -UiO-66-DIL(n-PyRIm) ( n = 2, 3, 4; R = Et, Pr, Bu, Pe) functionalized MOFs were prepared via a modular grafting approach and exhibited remarkable catalytic performance. Among them, ZrCe 0.5 -UiO-66-DIL(2-PyBuIm) converted epichlorohydrin into the corresponding cyclic carbonate with 96% yield and 98% selectivity under solvent-free conditions at 110 °C and a CO 2 pressure of 0.1 MPa. This outstanding activity arises from a cooperative activation mechanism, in which the mixed Zr 4+ /Ce 4+ activate the epoxide substrate through Lewis acid coordination with the epoxide oxygen, thereby facilitating C O bond activation, while the bromide anions embedded in the ionic liquid moieties promote nucleophilic ring opening. In addition to high catalytic efficiency, the MOF hybrids demonstrated excellent recyclability and broad substrate tolerance. Combined CO 2 adsorption measurements and in situ infrared spectroscopy further revealed key surface intermediates, enabling a plausible mechanistic pathway for the cycloaddition process to be proposed.
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