Journal of Energy Storage
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2024
·
IF 8.9
Jiaming Ye,Mingcheng Ye,Wenbin Ye,Zuyong Feng,Deping Xiong,Miao He
Lithium titanate (Li 4 Ti 5 O 12 /LTO) has been widely recognized for its superior stability and long cycle life as a negative electrode material for lithium-ion batteries. However, its limited specific capacity and poor rate performance have hindered broader applications. This study introduces an innovative approach to address these limitations by preparing Zr-doped Li 4 Ti 5 O 12 coated with reduced graphene oxide (rGO) (LTO-0.1Zr@rGO) using a wet chemical method combined with freeze-drying technology. The incorporation of Zr ions into the LTO lattice resulted in an increase in the lattice parameter and the unit cell volume. This increase facilitated the transmission of lithium ions and enhanced the material's conductivity. Furthermore, the rGO coating was found to significantly enhance the rate performance and cycle stability of the material. The LTO-0.1Zr@rGO composite demonstrated a high rate capacity ranging from 396.5 to 263.6 mAh g −1 at current densities varying from 0.2 to 5.0 A g −1 , with a stable capacity of 310.2 mAh g −1 maintained after 1000 cycles at a current density of 1.0 A g −1 . These results indicate the potential of LTO-0.1Zr@rGO as a promising anode material for high-rate and stable lithium-ion batteries.
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高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Huajing Zhang,Chao Xu,Xiangyu Sun,Bowen Xu,Zhirong Liao,Huawei Liu
Ca-based materials are considered to be promising energy storage materials for the 3rd generation concentrated solar power (CSP) plants due to their high energy storage density , high operating temperature , and low energy loss . However, the poor cyclic stability, low solar absorption capability, and slow reaction kinetics of conventional Ca-based materials seriously limit large-scale applications. Here, we successfully synthesized a Zr-Mn co-doped CaO-based composite, achieving good cyclic stability, enhanced solar absorption capability, and fast carbonation reaction kinetics simultaneously. The energy storage performance of 20Ca-0.5Zr-0.5Mn was evaluated at a high carbonation reaction temperature of 850 °C. Results showed that the performance decay of 20Ca-0.5Zr-0.5Mn was only 10.11 % over 30 cycles. By co-doping Zr and Mn elements, the carbonation reaction kinetics of CaO-based composites were promoted because of increased basicity and oxygen vacancies . Compared with pure CaO, the average solar absorptance of 20Ca-0.5Zr-0.5Mn was enhanced by about 376 %. Therefore, the proposed Zr-Mn co-doped CaO-based composite indicates the bright applied prospect in CSP plants for solar energy storage .
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Journal of Cleaner Production
·
2025
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IF 10
Tong Xu,Xiaopei Ding,Chengcai Li,Haoyang Cheng,Guojin Liu,Hailin Zhu,Yuhai Guo,Xueliang Jiang,Jiuming Li
Accelerated industrial expansion has led to significant wastewater pollution, with effluent containing the toxic heavy metal Cr(VI) posing severe threats to ecosystems and human health. The combination of metal-organic frameworks (MOFs) and membrane separation techniques offers promising solutions for pollutant removal. This study developed a polytetrafluoroethylene (PTFE)-based composite membrane for effective Cr(VI) removal from aqueous solutions. This membrane was prepared through the in-situ synthesis of zinc-zirconium bimetallic MOFs on a PTFE membrane that had been modified with L-DOPA/PEI. The composite membrane demonstrated optimal Cr(VI) adsorption at a Zr:Zn molar ratio of 1:4, under conditions of 45 °C and pH = 2, with a maximum adsorption capacity of 335.1 mg/g. The adsorption process of Cr(VI) onto the composite membrane adhered to both the pseudo-second-order kinetic model and the Freundlich adsorption isotherm. Thermodynamic analyses confirmed a spontaneous, endothermic process. The composite membrane, with its excellent adsorption capacity, filtration performance, and recyclability, stands out as a highly effective material for the removal of Cr(VI) from aqueous solutions. Furthermore, it addresses the issues of aggregation, difficulty in separation, and the recycling challenges associated with powder-like MOFs, demonstrating significant potential for practical applications.
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Journal of Materials Chemistry A
·
2025
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IF 9.5
Jianfei Xiao,Jifei Ma,Zhenliang Zhu,Yao-Qi Huang,Shaojun Yuan
The separation of methanol-to-olefins (MTO) products to obtain high-purity ethylene (C₂H₄) and propylene (C₃H₆) is a critical yet challenging task. However, developing adsorbents with high C₃H₆/C₂H₄ selectivity and productivity for one-step C₂H₄ purification and C₃H₆ recovery remains an industrially significant but demanding objective. In this study, a site-engineering strategy was employed to tailor cage size and polarity within a confined pore space. Using post-synthetic modification, the robust Zr-based metal-organic framework (MOF-808) was functionalized with oxygen- and benzene ring-containing ligands, including benzoic acid (Ben), 2-formylbenzoate (For), and 2-acetylbenzoic acid (Ace). Among these, MOF-808-For exhibited a twofold increase in both C₃H₆ adsorption capacity (5.7 mmol·g⁻¹) and C₃H₆/C₂H₄ separation efficiency compared to unmodified MOF-808 under identical conditions. Additionally, MOF-808-For enabled the simultaneous recovery of C₃H₆ and C₂H₄ through a one-step adsorption-desorption process. Adsorption thermodynamics and theoretical calculations revealed that C₃H₆ interacted more strongly with the framework than C₂H₄. The optimal cage size and oxygen-binding sites of MOF-808-For facilitated the selective trapping of C₃H₆ via multiple strong C-H···C and C-H···O hydrogen bonds, resulting in exceptional C₃H₆/C₂H₄ selectivity (11.1) and high C₂H₄ productivity (99.1 L·kg⁻¹ at 2 mL·min⁻¹ for 1:1 C₃H₆/C₂H₄ mixture) among reported MOFs. Furthermore, multi-cycle experiments demonstrated no significant loss in separation performance, confirming the excellent reusability of MOF-808-For for MTO product separation.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Mengyao Chen,Wenjing Qin,Yanli Wang,Yu Song,Fei Tian,Hanlin Zhai,Changshun Gu,Le Ge,Song Xue,Xinxin Li,Xiangchuan Zhao,Yixin Xu,Zeyu Ming,Shengrong Li,Shougen Yin
3D printing hydrogel shows a broad application prospect in soft actuator/robot and flexible electronics due to its adaptable structure and designable chemical composition. Herein, a Zr 4 + -deep eutectic solvent (DES)-PAAc hydrogel is developed via digital light processing (DLP) 3D printing technology. By synergistically integrating hydrogen bonding, Zr⁴⁺-carboxylate ionic coordination bonds, and electrostatic interactions between DES and PAAc chains, the hydrogel achieves a unique soft-hard phase-separated dual-network architecture. This design provides an internal energy dissipation-storage mechanism, endowing the hydrogel with exceptional mechanical robustness (maximum stress of 1.86 MPa), high conductivity (conductivity of 0.51 S/m), and cyclic compression stability (energy dissipation of 2.69 kJ m⁻³), thereby overcoming the trade-off between toughness and functionality in conventional hydrogels. Leveraging DLP 3D printing, the hydrogel is precisely tailored into complex architectures (e.g., bioelectrodes, impact-resistant structures). Remarkably, the hydrogel serves as a self-powered pressure-sensing electrolyte in Zn-Cu batteries and a weather-resistant bioelectrode for real-time monitoring of bio-signals. Furthermore, its tailored structures exhibit programmable impact resistance for delicate device protection. The combination of additive manufacturing and cross-domain functionality establishes a paradigm for hydrogels in wearable healthcare, soft robotics, and energy-autonomous sensing systems.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 8
·1-10
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IF 5.3
Yang Juanli,Chen Xingnu,Ji Yi,Tan Mengyuan,Hu Qin,Gao Lu,Zheng Kaiyi,Yang Zhen-quan,Li Xin,Xu Xuechao
Staphylococcus aureus , a prevalent foodborne pathogenic bacterium, poses a significant threat to human health. Herein, a dual-mode sensing method is proposed for detecting S. aureus in food using aptamer-modified Fe/Zr metal organic framework (Apt@Fe/Zr MOF). The Apt@Fe/Zr MOF was prepared through self-assembly of Fe/Zr MOF followed by surface modification with an aptamer. It exhibits peroxidase-like activity, catalyzing the 3,3′,5,5′-tetramethylbenzidine (TMB) chromogenic reaction. Meanwhile, Apt@Fe/Zr MOF demonstrates fluorescent characteristics, emitting a fluorescence signal at 428 nm upon excitation with light at 350 nm. Based on this feature, dual-mode sensing of S. aureus with comparable specificity and excellent anti-interference was achieved through the integration of colorimetry and fluorometry. The limits of detection (LOD) for both colorimetric and fluorometric analyses were 3.25 × 10 1 and 1.47 × 10 1 CFU mL −1 , respectively. Actual detection of food samples indicates that this method exhibits excellent reliability and accuracy, with recoveries ranging from 91.12 to 107.55% (colorimetry) and 94.40 to 109.47% (fluorometry). The results are highly consistent with those obtained from traditional culture-based methods. Therefore, it is evident that the dual-mode detection of S. aureus using Apt@Fe/Zr MOF offers a rapid and reliable method for ensuring food safety. Graphical
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Zarfashan Shahid,Bairong Fu,Saima Rehman,Zia Ahmad,Jiping Chen,Xianbo Lu
Bisphenol compounds, including BPA and BPS, are significant pollutants found in the environment, food, and daily necessities. They pose various adverse effects, including estrogenic, immunotoxic, metabolic, and reproductive toxicity, which severely threaten human health and ecological safety. Achieving simultaneous rapid detection of BPA and BPS is still very challenging due to their similar structures and co-existence in actual samples at ultratrace level. This study addresses the problem of developing an effective method for the rapid detection of BPA and BPS simultaneously. A new electrochemical nanosensor based on ionic liquid (IL) coupled Zr-MOF@GO was developed for ultrasensitive real-time detection of BPA and BPS. The Zr-MOF@GO/IL nanocomposite features a custom-built structure with an ordered framework, abundant pores, and highly coupled interfaces. The experimental findings demonstrate that the introduction of IL enhances the conductivity and dispersibility of the nanocomposite, improves the absorption capability for target bisphenols, and significantly improves the detection limit and linear range of the Zr-MOF@GO based electrochemical sensor. The sensor demonstrated wide linear ranges with detection limits of 5.5 nmol/L for BPA and 7.1 nmol/L for BPS (S/N = 3), respectively. Comparative studies revealed that the detection limits of the Zr-MOF@GO/IL-based sensor improved by an order of magnitude compared to the Zr-MOF@GO-based sensor. Additionally, the sensor exhibited superior analytical performance regarding reproducibility, stability, and selectivity. This study investigated the capability and synergy of IL coupled high-valent stable transition metal Zr IV -based MOFs in electrochemical sensing for the first time. This development sets a new benchmark in non-enzymatic electrochemical sensing, establishing the Zr-MOF@GO/IL-based sensor as a promising platform for the individual or simultaneous rapid detection of bisphenols in actual samples.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Chaoting Shi,Ninghan Tang,Shan Pu,Hui Xin,Lan Wu,Xiandeng Hou
Metal-Organic Frameworks (MOFs) have been widely used for the antibiotic pollution control. However, it remains a challenge to simple design and synthesis of multifunctional MOFs for sensing and degradation antibiotics. Herein, a multifunctional UiO-66(Zr/Ce)-NH 2 ratiometric fluorescence sensing and photocatalytic degradation platform was rapidly and simply constructed at room temperature by a one-pot method using a dielectric barrier discharge device. The mixed-metal centers and mixed-ligands of this platform enabled effective ratiometric fluorescence sensing of tetracycline (TC), along with a visual fluorescence shift from blue to yellow-green color. The platform demonstrated a detection of TC ranged from 200 nM to 15 μM, with a detection limit of 43 nM. Moreover, the UiO-66(Zr/Ce)-NH 2 exhibited strong light absorption and efficient photogenerated carrier separation, thus offering excellent degradation performance of TC compared with that of MOFs with single metal center, mixed ligands or mixed metal centers. The mechanism of fluorescence detection and potential charge transfer pathways by the UiO-66(Zr/Ce)-NH 2 were analyzed. This work provided a new approach for the simple design and synthesis of multifunctional MOFs platforms.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2020
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IF 4.872
Ying Su,Sicen Wang,Nan Zhang,Ping Cui,Yan Gao,Tao Bao
Phenoxy herbicides are widely applied in agricultural weeding. The determination of herbicides is important in environmental protection, agricultural production, food safety, and public health. In this study, a facile and efficient analytical method was proposed for the trace detection of phenoxy herbicides in soil, cucumber, and tap water samples by coupling pipette tip solid phase extraction (PT-SPE) with high performance liquid chromatography . UiO-66-funtionalized cotton ( [email protected] ) was packed into pipette-tip as sorbent to fabricate extraction device. The modification of UiO-66 on cotton fiber was confirmed using scanning electron microscope , Fourier transform infrared spectroscopy , and X-ray diffraction. The main factors affecting the adsorption of [email protected] for four phenoxy herbicides were evaluated by response surface methodology in detail. Under optimized conditions, [email protected] displayed excellent properties in the extraction of phenoxy herbicides with good peak shape. Linear ranges of 4-chlorophenoxyacetic acid, dicamba, 2,4-dichlorophenoxyacetic acid, and 2-(2,4-dichlorophenoxy) propionic acid were 1.4–72 μg/L, 5.6–280 μg/L, 2.8–140 μg/L and 3.2–160 μg/L (RSDs < 6.3%), respectively. The recoveries were between 83.3 and 106.8% with RSDs <6.7%, with detection limits ranging from 0.1 μg/L to 0.3 μg/L. The results show that [email protected] in PT-SPE is an effective method for monitoring phenoxy herbicides in complex samples.
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PubMed
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 20
·5902-5911
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IF 5
Haoxi Jiang,Liping Yi,Guochao Yang,Lingtao Wang
Hierarchical Zr-β zeolite is a promising catalyst in the conversion of ethanol to 1,3-butadiene owing to the improved accessibility of active sites inside the zeolite to bulky substrates. Accordingly, hierarchical nanocrystalline Zr-β zeolite with sufficient intercrystalline mesoporosity and microporosity was prepared in this work via silanization-based hydrothermal synthesis. A systematic investigation was conducted to determine the effect of the secondary porosity on the textural, acidic and catalytic properties. The results suggested that neither acid amount, strength nor location varied with the additional secondary porosity. However, an appropriate proportion of micropores and mesopores would provide significant contributions to enhanced catalytic performance, arising from the available confined environment around the active sites inside the micropores, enhanced accessibility of such sites and improved diffusion of reactants and products due to mesopores.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2019
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IF 2.752
Wen Cui,Xiaoli Kang,Xiaoying Zhang,Xudong Cui
A highly efficient Rhodamine B (RhB) adsorbent based on a gel-like ZnO/Zr-metal-organic framework (ZnO/Zr-MOF) composite was prepared by reacting ZnO nanoparticles with glacial-acetic-acid-modulated Zr-MOF(bpy) via a sample solvothermal method. Introduction of ZnO greatly improved the texture properties of the parent Zr-MOF(bpy), and the resulting material exhibited an agglomerate morphology consisting of numerous quadrate nanoparticles, which is quite different from the cubo-polyhedron morphology of Zr-MOF(bpy). In this way, this composite showed a considerable RhB absorption capacity from aqueous solution in a wide pH range. The adsorption kinetics , isotherms and thermodynamics of the RhB adsorption by ZnO/Zr-MOF(bpy) were discussed and confirmed that this adsorption process satisfied pseudo-second-order kinetics and the Langmuir model, and was a spontaneous exothermic process. Moreover, the excellent adsorption performance is likely related to the synergism of hydrogen bonding , electrostatic interactions and π–π interactions between the ZnO/Zr-MOF(bpy) nanocomposite and RhB. The excellent texture properties of ZnO/Zr-MOF(bpy) promote the adsorption and diffusion of RhB on it, which is also crucial during the adsorption process.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2021
·Vol. 36
·期 2
·196-202
·
IF 0.957
Xie Dayan,Zhang Kuibao,Li Weiwei,Luo Baozhu,Guo Haiyan
We reported a rapid synthesis of Sm 3+ /Zr 4+ co-doped Gd 2 Ti 2 O 7 pyrochlore simulated nuclear wastes solidification by self-propagation plus quick pressing technique. With increment excess contents of Sm 2 O 3 and ZrO 2 from 0 to 10wt%, the phase composition of the products is a mixed phase of pyrochlore structure and defective fluorite structure by X-ray diffraction (XRD) analysis and Raman spectrum. In addition, the SEM results demonstrate the fracture surface and microstructure of Gd 2 Ti 2 O 7 -based pyrochlore. The densified pyrochlore waste form exhibits high bulk density of 5.56 g·cm −3 and vickers hardness of 11.20±0.2 GPa. The leaching tests show that the elemental leaching rates of Gd, Sm, and Cu after 42 days are 1.92×10 −4 , 1.51×10 −4 , and 3.90×10 −3 g·m −2 ·d −1 , respectively.
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危险品化学品经营许可证（带存储）