Journal of Energy Chemistry
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2019
·
IF 5.162
Tian-Tian Chen,Rui Wang,Lin-Ke Li,Zhong-Jun Li,Shuang-Quan Zang
Metal–organic framework (MOF) derived hybrid materials have been developed as an efficient non-noble-metal electrocatalysts for clean energy conversion systems. In this work, a Co-based MOF containing nitrogen and oxygen heteroatoms (Co-NOMOF) mixed with the thiomolybdate [Mo 3 S 13 ] 2− nanoclusters was used to prepare the N, S, O-doped carbon encapsulating Co 9 S 8 and MoS 2 (Co 9 S 8 /MoS 2 @NSOC) nanocomposite by one-step pyrolysis . The Co 9 S 8 /MoS 2 @NSOC nanocomposite exhibited remarkable catalytic performance for hydrogen evolution reaction (HER) with overpotential of 194 and 233 mV in 1 M KOH and 0.5 M H 2 SO 4 solution under 10 mA cm −2 , respectively, which was ascribed to the multiheteroatom-doped hierarchical porous carbon matrix and the synergistic effect of intrinsic activity of Co 9 S 8 and MoS 2 . This work provides new opportunity for developing highly efficient non-precious metal electrochemical catalysts.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Caiqin Su,Defeng Hu,Hongtian Yang,Yide Han,Yufeng Liu,Ying Zhang,Xia Zhang
In this study, bi-functions of surface adsorption and laccase like catalysis were integrated by the hybrid membranes of Cu-MOF (Cu-2MI) uniformly incorporated polyvinylidene fluoride (PVDF) for the first time, which endow an unexpected utility in surface physical adsorption and chemical catalytic engineering. In which, the loading of Cu-2MI was varied to optimize the surface performance of the membranes. The adsorption conditions were optimized based on batch adsorption experiments, and the adsorption kinetics, isotherms, and thermodynamics were discussed by using theoretical models to elucidate the adsorption mechanism. In addition, the laccase-mimicking catalytic performance of these Cu-2MI/PVDF hybrid membranes was explored based on the colorimetric reaction of 2,4-dichlorophenol (2,4-DP). The laccase-like catalytic kinetics, including K m and V max , were determined, and their catalytic stability under varying pH, temperature, organic solvents, and storage time was systematically tested and compared to that of free laccase. The maximum adsorption capacity of the obtained Cu-2MI/PVDF hybrid membrane for acid fuchsin (AF) is 4789.5 μg cm −2 . Moreover, the hybrid membrane exhibits a good linear relationship in the range of 5.0–750 μM in adrenaline detection, with a detection limit of 3.60 μM. This work highlights the exceptional surface activity and stability of the Cu-MOF/PVDF hybrid membranes, which ensure promising applicability in surface physical and chemical engineering.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Lin Ma,Xiaotong Chen,Hua Kang,Zijiang Liu,Guixin Wan,Shuyi Ma,Tingting Wang,Liang Cheng,Nina Ma,Ping Ni
Recently, materials derived from metal-organic frameworks (MOFs) have garnered increasing attention owing to their exceptional gas-sensing performance. In this study, hollow ship-like α-Fe 2 O 3 with oxygen vacancy defects and thin shells were successfully synthesized via a simple calcination method using MIL-88A (Fe) as a precursor. Characterization results revealed that the α-Fe 2 O 3 exhibited a porous structure composed of nanoparticles featuring a rough surface. Notably, under the optimum operating temperature of 180 °C, the sensor based on α-Fe 2 O 3 demonstrated remarkable performance in detecting triethylamine gas (TEA), exhibiting an ultra-high response (527 at 50 ppm), rapid response/recovery times (20/8 s at 2 ppm), and excellent selectivity. These outstanding TEA-sensing properties are primarily attributed to the unique morphologic structures and suitable defects, suggesting that this research will facilitate the efficient and rapid development of high-performance gas sensors for TEA.
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Current Analytical Chemistry
·
2025
·Vol. 21
·期 1
·57-67
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IF 1.7
Mengfei Yang,Jing Shi,Taiming Luo,Xiaozhan Yang
Aims By using terephthalic acid, 2, 5-furandicarboxylic acid, and terbium nitrate hexahydrate, a Tb-MOF with a core-shell structure was successfully designed and prepared. Methods A one-pot method was employed to design and synthesize core-shell Tb-MOF. The morphology, luminescence performance, and stability were well characterized. Results Tb-MOF demonstrated good water stability, acid and alkali resistance, and thermal stability. Tb-MOF was found to have high sensitivity to detect Cr3+, Bi3+, and acetone in an aqueous solution, and the LOD of Cr3+, Bi3+, and acetone were calculated to be 0.18 μM, 4.22 μM, and 0.26%, respectively. The sensing mechanism of Cr3+ and acetone was explained as energy-competitive absorption, and the sensing mechanism of Bi3+ was explained as ion replacement. Conclusion The prepared Tb-MOF can be developed as a multifunctional light-emitting sensor with high selectivity.
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Nano Today
·
2025
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IF 10.9
Mingkai Wang,Ruiyang Li,Shihao Sheng,Huijian Yang,Xuan Tang,Jian Wang,Fuxiao Wang,Qin Zhang,Long Bai,Xiao Chen,Jie Gao,Xiaoxiang Ren,Han Liu,Jiacan Su
The rising prevalence of multidrug-resistant pathogens poses a significant threat to human health, with methicillin-resistant Staphylococcus aureus (MRSA) being particularly concerning. Although vancomycin has long been the standard treatment for MRSA, its repeated use can lead to antibiotic tolerance and resistance. The accumulation of bacterial metabolites contributes to this tolerance, suggesting that modulation of bacterial metabolic pathways may provide a novel solution. Herein, we developed Ga/Cu-MOF nanomyze, characterized by a high specific surface area, which could be capable of loading antibiotics and serve as a dual-metal ion reservoir for the sustained release of gallium ions (Ga 3 + ) and copper ions (Cu 2+ ). These ions independently inhibited nitric oxide (NO) production and promoted the decomposition of S-nitrosothiols (RSNO), significantly reducing MRSA's tolerance to vancomycin. Moreover, Ga/Cu-MOF induced programmed cell death in MRSA, specifically targeting ferroptosis and cuproptosis. Antibiotic-loaded nanomyze exhibited robust synergistic antibacterial properties, including the inhibition of biofilm formation and the clearance of intracellular bacteria in macrophages. In preclinical models of skin defect infections in mice and osteomyelitis in rats, Ga/Cu-MOF showed the ability to regulate the host inflammatory response, facilitating faster recovery. Our goal is to reduce bacterial tolerance by modulating metabolic pathways and enhance antibacterial efficacy through bacterial cell death, thereby presenting a potential novel therapeutic strategy for the clinical management of multidrug-resistant bacteria.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 15
·1-17
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IF 2.8
Wang Renjie,Hu Mengmeng,Zhu Yifan,Jin Xiaxue,Ge Siying,Cai Runjing,Wang Tongliang,Cheng Qiaohuan,Ran Huijuan,Peng Fei
Dopamine is a critical neurotransmitter, and its dysfunction is strongly linked to various neurological disorders, including Parkinson’s disease, depression, and schizophrenia. Current detection techniques exhibit limitations in clinical applications; therefore, developing a method with high sensitivity and rapid response for dopamine detection holds significant importance. In this study, poly(3,4-ethylenedioxythiophene) (PEDOT) was synthesized via the solvent method, and a novel electrochemical sensor was constructed by integrating titanium metal–organic framework (Ti-MOF) with PEDOT through an in-situ synthesis strategy. This sensor combines the REDOX properties of Ti-MOF with the high conductivity of PEDOT, demonstrating exceptional sensitivity toward dopamine. The linear detection range spans from 8 to 400 μM, with a detection limit of 3.815 μM. In the presence of ascorbic acid (AA), dopamine (DA), and uric acid (UA), the sensor exhibits remarkable selectivity for DA. Repeatability testing reveals that the relative standard deviation of the sample response current is less than 5%, indicating high data consistency. Furthermore, after one month of storage, the senso’s response to DA decreases by only 12%, reflecting excellent reproducibility. Additionally, this study provides an in-depth analysis of the sensor’s REDOX mechanism, offering theoretical support for its optimization and practical application. The successful development of this sensor introduces an innovative, efficient, and highly sensitive approach for dopamine detection, thereby expanding the application scope of Ti-MOF in the field of electrochemical sensing.
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Journal of Materials Chemistry B
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2025
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IF 5.7
Rong Luo,Zhao Chen,Man Zhe,Wenting Wu,Yuzhen Xiao,Jiabao Jiang,Hao Liu,Ming Liu,Fei Xing
The management of bone defects poses a significant challenge for clinicians, necessitating effective strategies to regulate immune inflammation, angiogenesis, and osteogenic differentiation for successful bone regeneration. In this study, we developed a novel hydrogel composed of carboxymethyl chitosan (CMCS) and gelatin methacryloyl (GelMA) designed for the sustained release of the bioactive component calcitonin gene-related peptide (CGRP) and zeolitic imidazolate framework-8 (ZIF-8). CGRP was initially encapsulated within ZIF-8 and subsequently integrated into the CMCS/GelMA hydrogel matrix. In vitro evaluations revealed that the hydrogel exhibited exceptional biocompatibility and antimicrobial properties, effectively promoting osteogenesis and angiogenesis while modulating M2 macrophage polarization. Furthermore, in vivo assessments indicated that the CGRP@MOF/CG hydrogel significantly regulated the local immune microenvironment and accelerated the healing of cranial defects in rat models. This study provides valuable references for the design and fabrication of multifunctional materials for enhancing bone regeneration.
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PubMed
高影响因子
LANGMUIR
·
2025
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IF 3.9
Shijiang Feng,Rong Qiang,Yulong Shao,Lei Rong,Fangjie Ren,Na Xiao,Siyuan Zhang,Zheng Guo,Caihong Chen,Qing Miao
The construction of hollow structures and the incorporation of metal nanoparticles have been shown to be two potential approaches to achieving high-performance microwave absorption. In this study, a hollow polyhedron material featuring an FeN/Fe-doped carbon matrix was synthesized by an acidification corrosion and pyrolysis strategy. The formation of heterojunctions, coupled with the design of hollow structures, significantly improved the dielectric loss capacity of the material. Furthermore, the incorporation of magnetic metal nanoparticles not only increased the magnetic loss but also enriched the loss mechanisms of the material, leading to an overall improvement in the magnetic loss. Under the synergistic effects of these factors, the material exhibited exceptional microwave absorption properties. In particular, at a material thickness of only 2.3 mm, the minimum reflection loss value of the FeN/Fe@HC nanocomposite reached −64.5 dB with an effective absorption bandwidth of 5.1 GHz. These results further highlight the importance of a hollow structure design and metal atom doping in improving microwave absorption performance.
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STAR Protocols
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2022
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IF 0
Haiqiang Luo,Bo Li,Jian-Gong Ma,Peng Cheng
Summary The morphology of nano-Cu 2 O profoundly determines its catalytic performance. Here, we provide two universal and reliable techniques to modify the surface of nano-Cu 2 O. First, we detail steps for the systematic tuning of the exposed facets of nano-Cu 2 O ranging from low index to high index using reductant-controlled technique in the presence of sodium dodecyl sulfate. Second, we describe steps for facet-directed precipitation in which the morphology-dependent ZIF-8 (a type of zeolitic imidazolate frameworks) shells on different nano-Cu 2 O are well introduced. For complete details on the use and execution of this protocol, please refer to Luo et al. (2022) .
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PubMed
Small
·
2019
·Vol. 15
·期 24
·1901156
·
IF 10.856
Lei Sun,Yurui Xu,Ya Gao,Xinyu Huang,Shujun Feng,Jianmei Chen,Xuekun Wang,Leilei Guo,Meng Li,Xia Meng,Jikang Zhang,Junliang Ge,Xueying An,Dang Ding,Yadong Luo,Yu Zhang,Qing Jiang,Xinghai Ning
Cancer cells are susceptible to oxidative stress; therefore, selective elevation of intracellular reactive oxygen species (ROS) is considered as an effective antitumor treatment. Here, a liposomal formulation of dichloroacetic acid (DCA) and metal–organic framework (MOF)-Fe 2+ (MD@Lip) has been developed, which can efficiently stimulate ROS-mediated cancer cell apoptosis in vitro and in vivo. MD@Lip can not only improve aqueous solubility of octahedral MOF-Fe 2+ , but also generate an acidic microenvironment to activate a MOF-Fe 2+ -based Fenton reaction. Importantly, MD@Lip promotes DCA-mediated mitochondrial aerobic oxidation to increase intracellular hydrogen peroxide (H 2 O 2 ), which can be consequently converted to highly cytotoxic hydroxyl radicals (•OH) via MOF-Fe 2+ , leading to amplification of cancer cell apoptosis. Particularly, MD@Lip can selectively accumulate in tumors, and efficiently inhibit tumor growth with minimal systemic adverse effects. Therefore, liposome-based combination therapy of DCA and MOF-Fe 2+ provides a promising oxidative stress–associated antitumor strategy for the management of malignant tumors.
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Journal of the Iranian Chemical Society
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2020
·Vol. 17
·期 9
·2335-2343
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IF 1.552
Wang Liping,He Jiao,Chen Xueying,Lv Yanling
A lanthanide metal–organic framework (MOF) Yb(BTC)(H 2 O)·(DMF) (BTC = 1,3,5-benzenetricarboxylate, DMF = N , N -dimethylformamide) was prepared from Yb(NO 3 ) 3 ·5H 2 O and H 3 BTC using the solvothermal method and characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, N 2 adsorption–desorption technology, and temperature-programmed desorption. The results show that Yb(BTC)(H 2 O)·(DMF) is a lanthanide MOF with an excellent thermal stability. The coordinated water molecules and DMF guest molecules were removed from the channels by calcination to form a porous solid Yb (BTC) with coordinatively unsaturated Yb 3+ sites. The BET surface area and pore size of Yb(BTC) are 695 m 2 /g and 0.68 nm, respectively. As a heterogeneous Lewis acid catalyst, the activity of Yb(BTC) for the synthesis of polycarbonate diol (PCDL) via transesterification between diphenyl carbonate and diol was investigated. Compared with nine reported catalysts, Yb(BTC) exhibits the highest catalytic activity for the synthesis of PCDL.
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ACS Applied Materials & Interfaces
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2021
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IF 9.229
Ping Xue,Xin Pan,Jiming Huang,Yijun Gao,Wei Guo,Junsheng Li,Mi Tang,Zhengbang Wang
Construction of porous metal–organic framework (MOF)/covalent organic framework (COF) hybrid photocatalysts for enriched structures and unprecedented properties is still a great challenge but highly desirable. Herein, a new series of Cu3(HHTP)2-MOF/Tp-Pa-1-COF hybrids with different MOF content are successfully fabricated. The as-prepared MOF/COF hybrids exhibit intimate interaction based on the coordination of Cu ions with the carbonyl oxygen and enamine nitrogen groups in Tp-Pa-1. The integrated conductive Cu3(HHTP)2 is able to act as an excellent electron extractor instead of noble metal cocatalysts to significantly promote the charge transfer and inhibit the recombination of photogenerated electron–hole pairs. As a results, the optimized photocatalyst with Cu3(HHTP)2:Tp-Pa-1 ratio of 1:15 achieves the highest hydrogen evolution rate of 1.76 mmol·h–1·g–1 under visible-light irradiation, which is about 93 times higher than that of the pure Tp-Pa-1 and even slightly higher than that of the Tp-Pa-1 with Pt (3 wt %) as a cocatalyst.
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