INORGANICA CHIMICA ACTA
·
2023
·
IF 2.8
Tian-Yu Zhang,Xue-Qian Wu,Heng-Yu Ruan,Yi Yuan,Le Wang,Ya-Pan Wu,Qing-Wen Han,Ruan Chi,Dong-Sheng Li
Designing economical and efficient anode catalysts is critical for the commercial use of direct alcohol fuel cells (DAFCs). In this work, a novel Ni(II)-based metal–organic framework (MOF), {[Ni 3 ( μ 3 -OH)(TMBTI)(1,4-bib)(H 3 O)} n (H 6 TMBTI = 2,4,6-trimethylbenzene-1,3,5-triylisophthalate, 1,4-bib = 1,4-bis(1-imidazoly)benzene) (CTGU-38, CTGU = China Three Gorges University), was successfully synthesized through solvothermal method. Structural analyses reveal that the CTGU-38 possesses a unique Ni 6 ( μ 3 -OH) 2 (COO) 12 cluster and 3D porous framework with a rare (6,16)-connected topology. Further electrochemical experiments demonstrate that the CTGU-38 exhibits good electrocatalytic oxidation performance towards various alcohol fuel molecules, including the methanol oxidation reaction (MOR), ethanol oxidation reaction (EOR), n -propanol oxidation reaction (NPOR), and isopropanol oxidation reaction (IPOR), with peak current densities ranging from 26.9 to 54.46 mA cm −2 in alkaline solution. These results indicate that the CTGU-38 appears to be a potential non-noble metal-based electrocatalyst for DAFCs, and this work provides new insights into the design of more efficient electrocatalysts at the atomic scale for energy conversion.
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BIOSENSORS & BIOELECTRONICS
·
2021
·
IF 10.618
Sihan Wang,Xiaoli Zhu,Qingyi Meng,Pimiao Zheng,Jing Zhang,Zhiwei He,Haiyang Jiang
Accurate and rapid detection of foodborne pathogens is a key to prevent foodborne disease outbreaks. In this study, a novel impedance immunosensor based on a metal-organic framework (Mn-MOF-74) is used to rapidly and sensitively detect Listeria monocytogenes ( L. m ) in milk. Divalent manganese ions are released by the MOF reduction reaction mediated by hydrogen peroxide. Consequently, the impedance signal was detected by high conductive single-crystalline gold interdigitated microelectrode to achieve quantification of L. m . First, the capture antibodies (Ab 1 ) are modified on the surface of the magnetic beads to generate immunomagnetic beads (MBs@Ab 1 ), which are used specifically to separate L. m cells in the matrices. Later, the immunosensor (Mn-MOF-74@Ab 2 ) is added to the matrices to form a sandwich complex (MBs@Ab 1 - L. m -Mn-MOF-74@Ab 2 ). Henceforward, Mn 2+ is released from the sandwich composite via the action triggered by H 2 O 2 . The release of Mn 2+ significantly changes the impedance of interdigitated microelectrodes, leading to ultrasensitive detection of L. m . The recoveries for L. m cells at the concentration between 1.0 × 10 0 and 1.0 × 10 4 CFU/mL are 90.2%–101.7% in water and 88.5%–96.2% in milk. The detection limit of this approach for L. m cells in water and milk are 7.1 and 9.2 CFU/mL, respectively. This approach can achieve rapid quantification of L. m cells within 60 min, and can also be employed to monitor other foodborne pathogens.
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Processes
·
2023
·Vol. 11
·期 5
·1398
·
IF 3.5
Bohan Ai,Mingsheng Luo,Iltaf Khan
Environmental protection laws require effective and green solutions to tackle water and air pollution issues. For this purpose, perovskite photocatalytic materials have proven to be a promising solution. In this study, CsSnBr3perovskite, coupled with ZIF-67 and decorated with noble metal Au, was shown to effectively enhance the charge separation and increase the light-absorbing capacity, and thus make the photocatalytic reaction more efficient by surface plasmon resonance. Characterization results from XRD, FTIR, and UV-visible diffuse reflectance spectroscopy indicated that a mixture of cubic and tetragonal crystalline phases was found in the prepared catalyst material. XPS also revealed that in the presence of two oxidation states for tin (Sn), the Au 4f XPS peaks of Au NPs coincided with those retained in colloidal Au particles. Using malachite green as a model compound, organic pollutant photocatalytic degradation tests proved that CsSnBr3generated good photocatalytic activity for aromatic pollutant degradation. In this research, the synthesized 4Au-7ZIF-CsSnBr3catalyst yielded an MG degradation rate twice as high as the unpromoted CsPbBr3.
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SCIENCE OF THE TOTAL ENVIRONMENT
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2020
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IF 6.551
Zhuxiu Zhang,Yue Xiao,Yifan Lei,Jihai Tang,Xu Qiao
The antibiotics abuse and the proliferation of antibiotic-resistant bacteria in the environment have a severe impact on both human health and ecosystem. In this study, a silica-nanocasting method was applied in Mg-MOF-74 template to generate a series of MgO/SiO 2 catalysts for the hydrolysis of β-lactam antibiotics. The Mg-based subunits in MOF-74 were converted to highly dispersed MgO nanoparticles with controllable particle size. MgO/SiO 2 -80 with the smallest MgO particle size exhibits the best catalytic performance in the hydrolysis of four β-lactam antibiotics. The kinetics study reveals the higher degradation rate and lower activation energy of MgO/SiO 2 -80 than other benchmark solid base catalysts. The proposed mechanism suggests that small MgO particle size provides more accessible oxygen anions with high proton affinity for the cleavage of the β-lactam ring, so that all hydrolytic products lose antimicrobial activity. The MgO/SiO 2 -80 serves as the potential high-performance solid base catalyst for the real-world antibiotic wastewater treatment .
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PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2014
·
IF 5.825
Zhuomin Zhang,Yichun Huang,Weiwei Ding,Gongke Li
Ethylene, an important plant hormone, is of utmost importance during many developmental processes of plants. However, the efficient enrichment and analysis of trace ethylene still remains a challenge. A simple and mild multilayer interparticle linking strategy was proposed to fabricate a novel hybrid MOF-199 enrichment coating. Strong chemical interparticle linkages throughout the coating improved the durability and reproducibility of hybrid MOF-199 coating dramatically. This coating performed a significant extraction superiority of ethylene over commonly used commercial coatings, attributed to the multiple interactions including “molecular sieving effect”, hydrogen bonding, open metal site interaction, and π–π affinity. The hybridization of multiwalled carbon nanotubes (MWCNTs) with MOF-199 further improved the enrichment capability and also acted as a hydrophobic “shield” to prevent the open metal sites of MOF-199 from being occupied by water molecules, which effectively improved the moisture-resistant property of MOF-199/CNTs coating. Finally, this novel enrichment method was successfully applied for the noninvasive analysis of trace ethylene, methanol, and ethanol from fruit samples with relatively high humidity. The low detection limit was 0.016 μg/L for ethylene. It was satisfactory that trace ethylene could be actually detected from fruit samples by this noninvasive method. Good recoveries of spiked grape, wampee, blueberry, and durian husk samples were obtained in the range of 90.0–114%, 79.4–88.6%, 78.5–86.8%, and 85.2–105% with the corresponding relative standard deviations of 4.8–9.8%, 6.9–8.9%, 3.8–8.1%, and 9.3–10.5% (n = 3), respectively.
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PubMed
高影响因子
Science Advances
·
2024
·Vol. 10
·期 15
·
IF 11.7
Kerong Chen,Anwei Zhou,Xinyuan Zhou,Jielei He,Yurui Xu,Xinghai Ning
Disruptions in metal balance can trigger a synergistic interplay of cuproptosis and ferroptosis, offering promising solutions to enduring challenges in oncology. Here, we have engineered a Cellular Trojan Horse, named MetaCell, which uses live neutrophils to stably internalize thermosensitive liposomal bimetallic Fe-Cu MOFs (Lip@Fe-Cu-MOFs). MetaCell can instigate cuproptosis and ferroptosis, thereby enhancing treatment efficacy. Mirroring the characteristics of neutrophils, MetaCell can evade the immune system and not only infiltrate tumors but also respond to inflammation by releasing therapeutic components, thereby surmounting traditional treatment barriers. Notably, Lip@Fe-Cu-MOFs demonstrate notable photothermal effects, inciting a targeted release of Fe-Cu-MOFs within cancer cells and amplifying the synergistic action of cuproptosis and ferroptosis. MetaCell has demonstrated promising treatment outcomes in tumor-bearing mice, effectively eliminating solid tumors and forestalling recurrence, leading to extended survival. This research provides great insights into the complex interplay between copper and iron homeostasis in malignancies, potentially paving the way for innovative approaches in cancer treatment.
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PubMed
高影响因子
PLASMA CHEMISTRY AND PLASMA PROCESSING
·
2023
·Vol. 43
·期 6
·2079-2091
·
IF 3.6
Li Yingwen,Gao Fei,Li Yang,Shen Chenyang,Liu Chang-jun
There exist always some H 2 S in natural gas. The industrialized process for H 2 S removal is an energy intense process and must be applied in a large scale. An alternative process is needed. Herein, we report a removal of H 2 S from a model natural gas mixture with methane, ethane and propane by dielectric barrier discharge (DBD), with which the dielectric (quartz) is frosted and coated with a layer of zeolite imidazole framework-67 (ZIF-67) nanoparticles. Compared to the DBD without coating, the average electric field as well as the mean electron energy of the DBD with ZIF-67 coating are higher at the same specific energy input (SEI), leading to a high H 2 S conversion of 75.4% with the limited conversion of methane (less than 2%). No conversions of other low alkanes can be detected. This provides a potential way for the H 2 S removal from the natural gas sources in the remote or isolated region. Graphical abstract
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ADVANCED POWDER TECHNOLOGY
·
2017
·
IF 2.659
Dezhi Chen,Caiqin Chen,Weisong Shen,Hongying Quan,Shasha Chen,Shasha Xie,Xubiao Luo,Lin Guo
Magnetic porous carbon-based sorbent (MPCS) with core-shell structure was prepared from the pyrolysis of Fe III -modified MOF-5. The component, structure and surface properties of the as-obtained sorbent were investigated by Raman spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. Sorption behaviors of five organic micropollutants (OMPs), such as atrazine, carbamazepine, bisphenol A, norfloxacin and 4-nitrophenol, onto the magnetic porous MPCS were studied in a batch system. The adsorption capacities of the five OMPs onto MPCS followed the order of 4-nitrophenol > norfloxacin > bisphenol A > carbamazepine > atrazine. All isotherms were fitted well by the Dubinin-Ashtakhov (DA) model, and the approximate site energy distributions were acquired. The possible adsorption mechanisms of the five OMPs onto as-prepared MPCS were discussed in detail. This study will aid in further understanding of interactions between the OMPs and MOF-derived carbon-based materials.
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ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Yu Cao,Luona Wang,Chengyin Wang,Xiaoya Hu,Yunling Liu,Guoxiu Wang
A photoelectrochemical (PEC) sensor based on hierarchically porous Cu-BTC/g-C 3 N 4 nanosheet (Cu-BTC/CN-NS, BTC = benzene-1,3,5-tricarboxylic acid) material was constructed for the first time. As a composite material, the hierarchically porous Cu-BTC can help to efficiently capture suitable pesticide molecules and accelerate signal transmission, while CN-NS possesses good optical performance. Under the irradiation of visible light, the Cu metal center can coordinate with the added glyphosate to form Cu-glyphosate complexes, leading to the increased steric hindrance of electron transfer and consequently resulted in an obvious decrease in photocurrent . Through this strategy, the constructed sensor can realize the detection of glyphosate from non-electroactive to electroactive. The results indicate that this photoelectrochemical sensor has a low detection limit of 1.3 × 10 −13 mol L −1 and a wide detection range (1.0 × 10 −12 –1.0 × 10 −8 mol L −1 and 1.0 × 10 −8 ∼ 1.0 × 10 −3 mol L −1 ). Furthermore, this Cu-BTC/CN-NS based sensor has the characteristics of short detection time and easy operation. It has great potential applications in photoelectrochemical analysis.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Yuchen Cong,Jing Li,Haiping Su,Yazhuo Shang,Honglai Liu
Solid polymer electrolytes have emerged as one of the most promising solid electrolytes due to their excellent flexibility and interfacial contact. However, their practical applications are hindered by low ionic conductivity and Li dendrite growth. Herein, metal–organic framework (ZIF-67) modified Li6.4La3Zr1.4Ta0.6O12 (LLZTO) were used as nanofillers (LZ) for PEO-based composite solid polymer electrolytes (CSPE). The electrospinning method was applied to promote the uniform dispersion of LZ particles in the film that helps to construct continuous Li+ transport channels. In addition, the ZIF-67 interact with both ether oxygen in PEO and anion in Li salt and can release more free lithium ions, thereby significantly enhancing the ionic conductivity (1.39 × 10–4 S cm–1, RT) and the Li+ transference number (0.62). The Li/Li symmetric cell continuously cycled without short-circuiting for a long duration over 2000 h, proving the high interface stability of Li-solid electrolyte. The Li/CSPE-LZ/LiFePO4 full cell delivered an initial discharge capacity of 154.3 mA h g–1 at 1 C, with a capacity retention rate of 95.4% after 220 cycles, demonstrating the feasibility of this CSPE for high performance all-solid-state lithium metal batteries.
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Shuyan Han,Yuan Liu,Tong Zhang,Keke Yao,Yanyan He,Bo Wang,Jinling Li,Teck-Peng Loh
In-situ growth of Co-MOF on carbon paper via one-step electrodeposition. • Co-MOF@CP electrochemical sensor was developed for sensitive detection of nitrite. • The sensor exhibits a wide linear range of 1–10,000 μmol/L, with LOD of 0.091 μmol/L for nitrite. • The sensor shows excellent selectivity, stability, repeatability, and reproducibility. • High sensitivity in the detection of nitrite in real samples. Reliable quantification of nitrite (NO 2 − ) is of great practical significance for food-safety supervision. In this work, a binder-free self-standing Co-MOF@CP electrode was prepared through a one-step electrodeposition route for high-performance nitrite determination in practical samples. Three-dimensional carbon paper (CP) acts as a porous conductive scaffold, supplying abundant nucleation sites while facilitating analyte accumulation. Meanwhile, Co-MOF delivers large specific surface area and plentiful catalytically active centers. Benefiting from their interfacial synergistic effect, charge-transport behavior and electrocatalytic reaction kinetics are greatly promoted, which further improves catalytic performance and long-term operational stability. Multiple characterizations including SEM, XRD, XPS, EIS and cyclic voltammetry (CV) demonstrate that CoMOF@CP possesses much larger electrochemically active surface area as well as lower charge-transfer resistance compared with Co(OH) 2 @CP and bare carbon paper. The constructed sensor achieves a low limit of detection of 0.091 μmol/L, accompanied by favourable anti-interference capacity, acceptable repeatability, fabrication reproducibility and operational stability. Real-sample recovery measurements yield spike recovery values ranging from 98.50% to 101.50%, with all RSD values less than 5.0%. This study not only establishes a dependable sensing platform for nitrite analysis but also offers a generalizable fabrication route for electrochemical sensors targeting trace contaminant detection. Download: Download high-res image (156KB) Download: Download full-size image
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CRYSTAL GROWTH & DESIGN
·
2018
·
IF 3.972
Xiaodong Feng,Yufei Wang,Faheem Muhammad,Fuxing Sun,Yuyang Tian,Guangshan Zhu
It has been widely recognized that nanosized metal–organic frameworks (nano-MOFs) possess prominent advantages over bulky MOFs in both chemical and physical aspects, while the synthesis of nano-MOFs with well-tuned crystal sizes and shapes still remains a challenge. Herein, with the aid of microwave heating and growth modulation, we successfully synthesized the nanosized counterpart of medi-MOF-1. Cubic-shaped, nanosized medi-MOF-1 with the length of 200 nm has been produced by adding a certain amount of capping ligands which cause competitive coordination interactions during the crystal growth process. It is found that crystal sizes and morphology were controlled by changing the concentration of the capping ligand. Furthermore, hierarchical porosity was introduced to nanosized medi-MOF-1 due to the existence of defects. It is believed that the nanosized counterpart of medi-MOF-1 would have remarkable potential applications in gas storage as well as the medical and pharmaceutical fields.
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