JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xian Zhang,Yuhang Yang,Jiage Yu,Ziming Li,Youyong Zhang,Xiangsheng Xie,Zhongping Zhang,Yunfeng Guan,Yuqiang Pi,Feng Wang,Yu Ding
Various strategies have shown promise for addressing the volume expansion issue of silicon (Si)-based anode materials and enhancing their electrochemical performance, such as nanocrystallization and the use of carbon-encapsulated nano-Si particles. However, the agglomeration of nano-Si particles remains a challenge, limiting their full potential. In this study, Zn-MOF-74 was employed to improve the dispersion of nano-Si powder in a carbon source. Subsequently, polyacrylonitrile was used in an electrospinning process to prepare an effective coating, followed by heat treatment to prepare nitrogen-doped Si/C flexible anode composites. The influence of the coating degree on electrochemical performance was investigated, and the Si/C-MOF-74/CNFs-2 composite prepared with 30.3 wt% nano-Si particles exhibited specific discharge capacities of 1030.1 mAh·g −1 after 150 cycles at 0.1 A·g −1 , 610.8 mAh·g −1 after 300 cycles at 1.0 A·g −1 , and 409.1 mAh·g −1 after 300 cycles at 2.0 A·g −1 .
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BIOELECTROCHEMISTRY
·
2025
·
IF 4.5
Ping Gao,Qiang Zhang,Jing Sun,Zhongmin Su,Qi Chang,Leijiao Li,Wenliang Li
Although natural enzymes exhibit high selectivity and catalytic efficiency, their complex structures and inherent variability limit the long-term monitoring capabilities. Metal-organic frameworks (MOFs) biomimetic mineralization offers stability protection for enzymes, but it increases diffusion obstruction and reduces activity of encapsulated enzymes. To overcome these challenges, a biosensor based on MOF-74 biomimetic mineralization of three enzymes and combined with arginine-derived carbon dots (Argdot) was designed for monitoring key indicators (glucose, lactic acid, and xanthine) of muscle fatigue. The Boron‑nitrogen co-doped porous carbon nanospheres/reduced graphene oxide electrode (B,NMCNS/rGO) was used as the sensing substrate and the MOF-74/enzyme/Argdot was served as selective recognition layer. The detection sensitivities for glucose, lactic acid, and xanthine are 182.4 nA μM −1 cm −2 , 386.6 nA mM −1 cm −2 , and 207.6 nA μM −1 cm −2 . The sensors exhibit excellent linear ranges that fully encompass the physiological concentration intervals of all three biomarkers in sweat, and maintain over 94 % of its current response over 60 day-storage. Experiments conducted under several conditions demonstrate that the sensing system can dynamically monitor the variation of glucose, lactic acid, and xanthine in sweat. This study highlights the considerable promise of a noninvasive and continuous sensing system for point-of-care assessment and effective management in sports health.
研究领域:
生物传感器
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可穿戴电子设备
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运动健康监测
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即时检测
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纳米材料
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酶固定化
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电化学传感
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
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IF 6.2
Tong Wu,Fang Ren,Zhengzheng Guo,Jiale Zhang,Xin Hou,Zhengyan Chen,Yanling Jin,Penggang Ren
The flourishing development of electronic devices and radar detection technologies necessitates the urgent creation of high-efficiency electromagnetic wave (EMW) absorption materials with expansive absorption bandwidths. Although MXene has garnered significant interest in the domain of EMW absorption due to its tunable dielectric properties and structural designability, its high permittivity often results in poor impedance matching and a single loss mechanism, which makes it difficult to realize optimal EMW absorption capabilities. In this work, CoNi bimetallic metal–organic frameworks (MOFs) derived bayberry-like magnetic porous carbon (CoNiMPC)@carbon nanotubes (CNTs)/MXene (CNCM) hybrids were initially synthesized via simple solution precipitation, thermal treatment, and electrostatic self-assembly strategy. As anticipated, excellent EMW absorption characteristics were achieved by adjusting the ratio of CoNiMPC@CNTs and MXene. Multi-heterointerfaces consisting of zero-dimensional porous carbon , one-dimensional carbon nanotubes, and two-dimensional (2D) MXene, electrical/magnetic coupling effects, and polarization loss induced by abundant heterointerfaces endow the prepared CNCM hybrids with high-performance EMW absorption. Notably, the CNCM-7 hybrid material exhibits a minimum reflection loss (RL min ) of − 65.3 dB at 6.8 GHz with a mere 2.7 mm thickness and an effective absorption bandwidth (EAB, RL < −10 dB) of 5.0 GHz at a thickness of 1.27 mm. This study proposes a unique viewpoint and approach towards the design and preparing high-performance MXene-based EMW absorption materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Yi-Shan Ouyang,Qing-Yuan Yang
Photocatalyst systems generally consist of catalysts and cocatalysts to realize light capture, charge carrier migration, and surface redox reactions. Developing a single photocatalyst that performs all functions while minimizing efficiency loss is extremely challenging. Herein, rod-shaped photocatalysts Co 3 O 4 /CoO/Co 2 P are designed and prepared using Co-MOF-74 as a template, which displays an outstanding H 2 generation rate of 6.00 mmol·g −1 ·h −1 when exposed to visible light irradiation. It is 12.8 times higher than pure Co 3 O 4 . Under light excitation, the photoinduced electrons migrate from the catalysts of Co 3 O 4 and CoO to the cocatalyst Co 2 P. The trapped electrons can subsequently undergo a reduction reaction to produce H 2 on the surface. Density functional theory calculations and spectroscopic measurements reveal that enhanced performance results from the extended lifetime of photogenerated carriers and higher charge transfer efficiency. The ingenious structure and interface design presented in this study may guide the general synthesis of metal oxide/metal phosphide homometallic composites for photocatalysis.
研究领域:
材料科学
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能源化学
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高影响因子
APPLIED CATALYSIS A-GENERAL
·
2025
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IF 4.8
Kunpeng Song,Haojie Lin,Qing Guo,Fang Liao,Chunmei Zeng
ZnIn 2 S 4 is a semiconductor photocatalyst with a suitable band gap for renewable energy production. However, its efficiency in photocatalytic hydrogen evolution is limited by the rapid recombination of photogenerated charge carriers. In this study, a ZnIn 2 S 4 @Ni-MOF-74 heterojunction nanocomposite was designed and synthesized via an in-situ hydrothermal growth method. This unique structure promotes intimate interfacial contact between the two materials and ensures a well-aligned band structure. The optimized ZnIn 2 S 4 @Ni-MOF-74 composite achieves a photocatalytic hydrogen evolution rate of 1823.7 μmol·g −1 ·h −1 without the use of precious metal cocatalysts, significantly surpassing that of pristine ZnIn 2 S 4 . Cycling tests demonstrated that the photocatalyst maintains stable performance over 12 consecutive cycles without significant degradation. The enhanced photocatalytic activity can be attributed to the well-matched band alignment and intimate interfacial contact, which collectively facilitate the formation of a type-II heterojunction structure, thereby promoting efficient charge separation and migration.
研究领域:
材料科学
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光催化
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可再生能源
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纳米复合材料
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半导体物理
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Qianqian Chen,Zhengyan Xue,Fengchun Wei,Qiaohuan Cheng,Renjie Wang,Tianyu Hu,Chunlong Guan,Bo Ouyang,Sankui Xu,Bingbing Fan,Xiaochen Li
Optimizing the composition and structure of metal-organic framework (MOF) materials has been proven effective in enhancing the performance of the oxygen evolution reaction (OER). However, rapid and controllable synthesis of MOF materials still faces challenges. In this work, we employed microwave assistance and surfactant soft templating to achieve rapidly synthesize CoNi-MOF-74 with controllable morphology. By incorporating 4% polyvinyl pyrrolidone (PVP), we successfully synthesized uniform hexagonal PVP4%-CoNi-MOF-74 within a remarkably short time of only 20 min. The PVP4%-CoNi-MOF-74 exhibited a mesoporous structure, displaying an impressive BET surface area of 1321.8 m 2 /g. PVP4%-CoNi-C alloy was obtained through a direct high-temperature treatment of PVP4%-CoNi-MOF-74 in an N 2 environment. The PVP4%-CoNi-C alloy successfully preserved their initial morphology and pore structure , and exhibited excellent OER performance. At a current density of 10 mA/cm 2 in a 1.0 M KOH solution, it demonstrated an overpotential of 310 mV, outperforming the commercial precious metal catalyst RuO 2 (overpotential of 394 mV). Impressively, even after 3000 cycles, the overpotential of PVP4%-CoNi-C alloy only experienced a minimal positive shift of 0.02 V, showcasing its excellent stability. Through a combination of experimental findings and DFT calculations, it is believed that the superior OER performance of the PVP4%-CoNi-C alloy can be attributed to its morphological dependence induced by the hexagonal prism structure, its large specific surface area facilitating more active sites, as well as the enhanced coordination interactions and faster electron transfer capabilities provided by the unique CoNi active site module.
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DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 27
·9346-9355
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IF 4
Qihang Chen,Wenna Zhao,Zihao Huang,Guochang Li,Kai Tao,Lei Han
Binary transition metal sulfides are considered to be a promising material for supercapacitors, possessing richer electrochemically active sites and superior electrochemical performance. Metal–organic frameworks (MOFs) are often used as self-sacrificing templates in the preparation of metal sulfides. Usually, direct sulfidation of MOFs tends to cause collapse of the morphological structure and blockage of the ion transport channels, so that the morphology of the original MOF template can be well preserved by using pyrolysis followed by S2− ion exchange. In this paper, we first prepared NiCo–MOF-74 on nickel foam by an in situ transformation method from layered double hydroxides (LDHs) through a ligand exchange reaction. Then, CoNi2S4 was synthesized in two steps involving the pyrolysis of NiCo–MOF-74 and a subsequent S2− ion exchange reaction. Compared with direct sulfidation, this synthetic strategy can well maintain the rod-like morphology of MOF-74 arrays and prevent structural collapse. The surface of CoNi2S4 has a fine nanosheet structure, which exposes more active sites and shows a high specific capacitance of 7.50 F cm−2 at 2 mA cm−2 and an excellent Coulomb efficiency (96.32%). In addition, the hybrid supercapacitor assembled with activated carbon shows a high energy density of 0.64 mW h cm−2 at a power density of 1.64 mW cm−2 and a high capacitance retention of 88.39% after 5000 cycles. These results indicate that rod-shaped CoNi2S4 can be controllably prepared from MOF-74 involving an exchange reaction and has promising application in high-performance supercapacitors.
研究领域:
材料科学
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电化学
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ACS Applied Materials & Interfaces
·
2023
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IF 9.5
Hui Guo,Xu Peng,Xiangyu Dong,Jiangge Li,Chong Cheng,Qiang Wei
Bone regenerative biomaterials are essential in treating bone defects as they serve as extracellular matrix (ECM) mimics, creating a favorable environment for cell attachment, proliferation, and differentiation. However, the currently used bone regenerative biomaterials mostly exhibit high stiffness, which may lead to difficulties in degradation and thus increase the risk of foreign body ingestion. In this study, we prepared soft fibrous scaffolds modified with Zn-MOF-74 nanoparticles via electrostatic spinning. The soft fibers (only 1 kPa) permit remodeling under cellular adhesive force, optimizing the mechanical cues in the microenvironment to support cell adhesion and mechanosensing. In addition, the incorporation of Zn-MOF-74 nanoparticles enables the stable and sustained release of zinc ions, promoting stem cell mechanotransduction and osteogenic differentiation. Therefore, the hybrid soft fibers facilitate the regeneration of new bone in the rat femoral defect model, which provides a promising approach for regenerative medicine.
研究领域:
生物材料
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组织工程
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再生医学
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纳米技术
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生物力学
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 44
·34779-34794
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IF 4.4
Wen Lihan,Shen Juan,Wu Shuangxian,Jin Bo
Radioactive strontium ( 90 Sr) contamination in water bodies poses one of the most persistent and serious threats to both ecological safety and public health, owing to its long half-life, high environmental mobility, and strong propensity for biological accumulation. However, a rapid and sustainable synthetic route for bimetallic MOF-74 with high Sr 2+ adsorption capacity remains lacking. This study reports a solvent‑free mechanochemical strategy for the synthesis of a bimetallic Cu/Zn-MOF-74 (CZ-M74-11) using a spiral gas-solid flow (S-GSF) method in just 1 min. The material achieves 98.26% Sr 2+ removal within 15 min and exhibits a maximum Langmuir adsorption capacity of 295.13 mg·g −1 at 303.15 K. Kinetic and thermodynamic analyses indicate that the adsorption is spontaneous and exothermic. XPS and FT-IR analyses, together with cyclic desorption data, reveal that Sr 2+ uptake proceeds primarily through outer-sphere complexation, with a minor contribution from inner‑sphere coordination involving carboxylate groups. This work addresses the gap in rapid and sustainable routes for bimetallic MOF-74 synthesis by introducing an S-GSF method that achieves excellent adsorption capacity and ultrafast kinetics for Sr 2+ removal. Graphical abstract
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Linjie Wang,Qing Jin,Youlin Xiang,Lu Gan,Lijie Xu,Ying Wu,Xingyu Fang,Haiqin Lu,Shuguang Han,Juqing Cui
Spinel structured Co x Mn 3-x O 4 nanoparticles embedded carbon composites (Co x Mn 3-x O 4 -C) were rationally designed and prepared using Co/Mn bimetallic metal organic frameworks (MOFs) as the template. The Co x Mn 3-x O 4 -C represented prominent bisphenol A (BPA) degradation capability by activating peroxymonosulfate (PMS), in which Co 1.5 Mn 1.5 O 4 -C exhibited the highest BPA degradation efficiency. Specifically, Co 1.5 Mn 1.5 O 4 -C (0.1 g/L) could completely degrade 0.1 mM of BPA within 3 min, which was better than many previous reported catalysts. Moreover, the Co 2+ leaching was limited in the Co 1.5 Mn 1.5 O 4 -C/PMS system. It was revealed that hydroxyl radical (•OH) and singlet oxygen ( 1 O 2 ) were the main active species in the reaction system, which dominated a dual pathway mechanism for BPA degradation. Furthermore, the Co 1.5 Mn 1.5 O 4 -C could maintain its performance in a variety of water matrices with promising recyclability. This study encourages the rational design and preparation of high-efficient catalysts by employing tunable MOFs precursors for refractory organic pollutant degradation.
研究领域:
环境科学
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材料科学
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Nana Li,Liangqiang Chen,Wanqiu Huang,Mengdi Hao,Huabin Tu,Hao Shen,Fan Yang,Shaoning Yu
As one of the most important industrial enzymes, α-amylase is widely used in food processing, such as starch sugar and fermentation, bringing high added value to industry of more than a trillion dollars. We developed a multi-enzyme system (Glu&Gox@Cu-MOF-74) prepared by embedding α-glucosidase (Glu) and glucose oxidase (Gox) into the biomimetic metal-organic framework Cu-MOF-74 using in situ encapsulation within 15 min at room temperature for efficient and sensitive detection of α-amylase activity. Benefitting from the remarkable peroxidase-mimicking property and rigid skeleton of Cu-MOF-74, the biocatalytic platform exhibited excellent cascade activity and tolerance in various extremely harsh environments compared to natural enzymes. On this basis, a cascade biocatalytic platform was constructed for the detection of α-amylase activity with wide linear range (5–100 U/L) and low limit of detection (1.45 U/L). The colorimetric cascade scheme is important for the sensitive and selective determination of α-amylase in complex fermentation samples, and the detection time is short (∼0.5 h). This work provides new ideas for the detection of α-amylase based on the cascade amplification method.
研究领域:
生物化学
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生物技术
·
分析化学
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yue Zhang,Dan Zhou,Bingjian Ai,Lin Zhao,Shujing Lin,Zhihong Shi,Hongyi Zhang
Yolk-shell magnetic ZIF-8@MOF-74 was synthesized via a facile method at room temperature. • Yolk-shell magnetic ZIF-8@MOF-74 based MSPE was optimized. • High specific surface area and hierarchical pores enhance MSPE performance. • MSPE-HPLC method developed for efficient BUs detection in fresh juices. • Greenness verified by ComplexGAPI index, aligning with green chemistry principles. Yolk-shell magnetic ZIF-8@MOF-74 was synthesized and utilized as a magnetic solid-phase extraction (MSPE) adsorbent for the detection of benzoylurea insecticides (BUs) residues in freshly-squeezed fruit and vegetable juices. The fabrication of magnetic ZIF-8@MOF-74 was conducted under mild and simple conditions without high-temperature/pressure or energy-intensive equipment. With a large specific surface area (880.78 m 2 g −1 ) providing abundant adsorption sites, the mesoporous architecture (average pore size 2.57 nm) and yolk-shell structure of magnetic ZIF-8@MOF-74 enable efficient mass transfer, achieving equilibrium within 7 min as an MSPE adsorbent for BUs. The established analytical method demonstrates good linearity in the concentration range of 0.5–200 μg L −1 , with low limit of detection (LOD) between 0.1 and 0.3 μg L −1 . The recoveries of BUs in freshly-squeezed pear juice and tomato juice samples were in the range of 81%–114% and 102%–120%, respectively. Evaluation via the ComplexGAPI index confirms its environmental sustainability. Download: Download high-res image (118KB) Download: Download full-size image
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