CARBON
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2024
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IF 10.5
Luyao Han,Haibo Yang,Zhixin Cai,Ying Lin
Although carbon fibers have significant dielectric loss, poor impedance matching often results in a narrow effective absorption bandwidth, which in turn induces unsatisfactory microwave absorption (MA). The composition and microstructure are remarkably critical factors in order to optimize the MA performance. Herein, the flexible magnetic carbon nanofibers (CoFe@CNFs) were prepared based on one-dimensional carbon nanofibers and core-shell MOF derivatives by electrospinning technology and subsequent high-temperature heat treatment. The integration of core-shell ZIF-67@ CoFe-PBA derivatives, the three-dimensionalconductive network of carbon nanofibers and the synergistic magnetic loss and dielectric loss significantly optimizes the impedance matching, which enables the CoFe@CNFs to simultaneously achieve favorable MA performance and lightweight characteristics. The CoFe@CNFs show a minimum reflection loss value of −47.9 dB and the maximum effective absorption bandwidth of 6.5 GHz when the filling ratio is only 7.5 wt%. In addition, the complex composition and unique microstructure endow the composites with excellent flexibility. This work provides a meaningful guidance for constructing lightweight MA materials with broadband absorption characteristics.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Xiaohong Tan,Hao Lin,Jiahao Zhou,Zhanhua Su,Bingbing Wan,Xiangming Li,Zhongqun Zhou,Yuge Liu,Guiyin Li
Hepatocellular carcinoma (HCC) is a leading cause of cancer-related mortality worldwide. Early detection of HCC is pivotal for early treatment, thereby improving survival rates. Golgi protein 73 (GP73) is a promising biomarker for early HCC diagnosis, making it crucial to develop a sensitive method to detect GP73. In this study, a novel ratiometric electrochemical aptasensor was fabricated for the sensitive detection of GP73 using Hemin-Cu-based metal-organic framework (Hemin-Cu-MOF) nanocomposites and GP73 aptamers. The Hemin-Cu-MOF nanocomposites possessed not only excellent electroactive property with the Hemin and Cu-MOF as dual signal outputs, but also good electroconductivity to amplify the electrochemical signals. The Hemin-Cu-MOF nanocomposites with numerous active sites was used to label the GP73 aptamer (AptI) and construct the Hemin-Cu-MOF-AptI signal probe. Another sulfhydryl-modified GP73 aptamer (AptⅡ) was immobilized on the gold nanoparticles (Au) modified screen-printed carbon electrode (Au/SPCE) through gold-sulfur (Au-S) bonds and used as a capture probe. Upon adding GP73, AptI and AptⅡ specifically recognized GP73 to form the sandwich complex AptⅡ@GP73@Hemin-Cu-MOF-AptI, making the dual signal of Hemin-Cu-MOF change and indicating GP73 level. Under optimal experimental conditions, the ratio of two oxidation peak currents (I Cu-MOF /I Hemin ) was proportional to the GP73 concentration (1.0–300.0 ng/mL), with a detection limit as low as 0.625 ng/mL. Furthermore, the aptasensor was tested in real human serum samples using the standard recovery method, with recoveries ranging from 104.10 % to 116.66 %. Thus, the proposed aptasensor has great potential in clinical analysis for detecting GP73 and early diagnosing of HCC.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yan-Ling Guo,Sai-Nan Guo,Ke-Qing Liu,Yan Wei,He Zheng,Jie-Xin Wang
The degradation of nerve agents is essential due to their high toxicity and lethality. The Zr-based metal–organic framework MOF-808 has emerged as a promising catalyst for the destruction of nerve agents and their simulants. However, its efficient synthesis is still a great challenge. In this study, we reported a convenient method for rapidly preparing MOF-808 nanoparticles in a rotating packed bed (RPB) reactor using high-gravity technology. Compared to a conventional stirred tank reactor, the preparation time of MOF-808 in the RPB was greatly shortened from 12 h to 30 min, while the mean particle size was obviously decreased by about 74 %. The obtained MOF-808 nanoparticles exhibited excellent catalytic performance for the hydrolysis of the nerve agent simulant O, O-diethyl S-phenyl phosphorothioate (DEPPT). Particularly, the 339 nm MOF-808 can rapidly degrade DEPPT with a half-life (t 1/2 ) of 4.36 min and an equilibrium degradation rate of 92.6 % at a dosage of 2.5 mg, respectively 1.5 and 1.25 times higher than those of 1.3 µm MOF-808 (t 1/2 = 6.36 min, 74.3 %). Furthermore, the DEPPT degradation mechanism was elucidated through a combination of experimental studies and density functional theory calculations. This work provides valuable insights into the efficient synthesis of nano-MOFs with enhanced catalytic activity for the hydrolysis of nerve agents.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yong Li,Lin Zhang,Ziyi Zhang,Tongdong Shen,Kun-Yi Andrew Lin,Shaoping Tong
Cobalt-magnesium oxide–carbon microsphere composite (Co-MgO-CMS), Cobalt-carbon nanosheet composite (Co-CNS), and magnesium oxide–carbon nanorod composite (MgO-CNR) were synthesized by the MOFs self-sacrificing template method. And they were used as the catalysts for catalytic ozonation of thiamphenicol (20 mg/L) in water at an initial pH of 7.0. The phase of Co-MgO-CMS is mainly composed of metallic cobalt, magnesium oxide and carbon according to X-ray diffraction and transmission electron microscopy analyses. Thiamphenicol removal efficiency is enhanced through Co-MgO-CMS catalytic ozonation (75.4 %, in 6 min), compared with those in ozonation alone (39.8 %), Co-CNS catalytic ozonation (43.2 %), MgO-CNR catalytic ozonation (65.1 %) and Mg-Co binary oxide (Mg 2 CoO y ) catalytic ozonation (69.0 %). Self-increasing of solution pH, protonated hydroxyl groups and electron transfer on metallic Co and lattice Co 2+ are advantageous for the ozone decomposition into reactive oxygen species in Co-MgO-CMS catalytic ozonation. Owing to the metallic Co in Co-MgO-CMS, the electron transfer ability of Co-MgO-CMS is better than that of Mg 2 CoO y according to the in situ electrochemical test. Moreover, electron transfers directly from metallic Co to ozone. While protonated hydroxyl groups are the key for electron transfer on lattice Co 2+ . A possible degradation pathway for thiamphenicol in Co-MgO-CMS catalytic ozonation is proposed according to the detected intermediates. This work provides insight into improvement on electron transfer ability of concerted acid-base catalyst in heterogeneous catalytic ozonation.
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高影响因子
FUEL
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2024
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IF 6.7
Yuhang Jing,Feng Gong,Sijun Wang,Wenbin Wang,Peng Yang,Enkang Fu,Rui Xiao
Plasma-assisted ammonia synthesis (PAAS) can produce ammonia using highly energetic, electronically excited nitrogen and Hydrogen radicals at low temperatures and atmospheric pressure, which has been regarded as a prospective alternative to the Haber − Bosch process. PAAS can exclusively use renewable power (solar, wind, etc.) to achieve green, decentralized and efficient ammonia synthesis. However, current catalysts for PAAS are suffering from low efficiency, poor stability and cyclability. Herein, we demonstrate a one-step hydrothermal synthesis of Ni-Co bimetallic metal–organic frameworks (MOFs) for PAAS. Attributed to the amplified gas transport capability and bimetallic coupling, the Ni-Co-MOF exhibits significantly improved PAAS performance: 88.21 μmol g −1 ·min −1 , above 30 % increase over 5 wt% Ni/Al 2 O 3 . The high stability of Ni-Co-MOF under the harsh electric field enables its durable performance (36 h) and excellent cyclability (24 cycles). Finally, to determine the viability of PAAS for industrial applications, we construct a hypothetical zero-carbon ammonia plant using only renewable energy sources, and the outcomes indicate that PAAS has significant competitiveness for future ammonia production.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Wenyu Yang,Mingbo Yang,Lingzhi Li,Siyuan Feng,Jiafan Wu,Na Du,Zinuo Shen,Tao Li,Zheyu Li,Ying Li,Zhihao Li
Two-dimensional metal–organic frameworks (2DMOFs)-based hybrid nanozymes integrate the excellent catalytic activity of 2DMOFs with intriguing properties of other functional nanomaterials, offering great opportunities in biosensing and catalysis applications. However, the versatile synthesis of 2DMOF-based hybrid nanozymes remains challenging due to the difficulty in precisely controlling interactions between 2DMOFs and other functional nanocomponents. In this work, a trifunctional surface ligand-mediated strategy was developed to rationalize these interactions and promote the general synthesis of 2DMOF hybrid nanozymes. The surface ligand not only prevents the nanocomponents from self-aggregation and keeps 2DMOF monodispersed to form ultrathin nanosheets, but also drives the assembly of 2DMOF and nanocomponent to form composite nanostructures. Using this strategy, a series of customizable hybrid nanozymes exhibiting synergistically catalytic activity, recyclability, cascade catalysis, and photo-enhanced catalysis were fabricated, respectively. Moreover, these hybrid nanozymes displayed excellent performance in H 2 O 2 detection, glucose sensing, and pollutant degradation. The successful demonstration of a general and facile strategy for synthesizing two-dimensional metal–organic framework (2D MOF) hybrid nanozymes paves the way for the development of 2D MOF-based nanomaterials and nanozymes with customizable functions. These materials hold significant potential in various applications, including catalysis, biosensing, disease diagnosis, and energy conversion.
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Lan Ma,Guilan Zhang,Yan Wan,Teng Wang,Xinyan Li,Yin Zhang,Tianfeng He,Rui Han,Liyun Zhang
In recent years, developing an efficient nanofiltration membrane had been a thorny challenge for dye/salt wastewater purification. In this study, a novel graphene oxide-based nanofiltration membrane (GO/UiO@S-GO-8) was constructed by intercalating the synergistic polyelectrolytes-Zr-MOF hydrated construction (UiO@S-GO) into GO nanosheets . Here, combining the hydrophilic high-density anionic sulfonic groups (SO 3 - ) with cationic amino groups (-NH 2 ), GO-based nanofiltration membrane demonstrated outstanding separation ability, anti-pollution performance and structure stability. Compared to pure GO membrane, benefiting by effective expansion of graphene layer spacing from intercalation effect of UiO@S-GO, the water permeance of GO/UiO@S-GO-8 membrane increased to 8 times (about 66.3 ± 1.5 L m −2 h −1 bar −1 ). Importantly, the permeances of various dyes wastewater also reached up to 65.1 ± 1.8 L m −2 h −1 bar −1 at the high removal rate (exceeding 99.4%). Furthermore, strong hydratability of polyelectrolytes and hard porous crystal constructed the robust anti-fouling micro/nano rough structures onto the membrane surface, which made flux recovery rate (FRR) of GO/UiO@S-GO-8 enhanced to 96.7 ± 1.3%. Remarkably, the salt-resistant behavior of the polyelectrolytes and porous MOF could maintain the stability of the membrane filtration channels, the GO/UiO@S-GO-8 membrane could realize efficient removal rate of dyes (over 98%) faced the complex dye wastewater with different salt concentrations. Meanwhile, the GO/UiO@S-GO-8 membrane also could maintain the high permeance (46.7 ± 1.5 L m −2 h −1 bar −1 ) as well as excellent removal rate (97.2 ± 1.4%) after 10 cycle experiments. Hence, the GO/UiO@S-GO-8 nanofiltration membrane with Polyelectrolytes-Zr-MOF hydrated construction possessed a broad application inspiration in the purification of high-salt/dye wastewater.
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高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Vinayak Hegde,Mahesh P. Bhat,Jae-Ho Lee,Cheol Soo Kim,Kyeong-Hwan Lee
Pesticide delivery carriers provide protection against pathogens but face significant challenges, including limited loading capacity, rapid release rates, and inconsistent performance. To address these issues, this study develops a dual-stimuli-responsive pesticide delivery carrier, featuring an iron–copper bimetal–organic framework (Fe–Cu MOF) supported on diatomaceous earth (DE) and coated with lauric acid (LA). Here, DE serves as a biocompatible scaffold, enhancing the adhesion and retention of MOF particles at target sites, thereby improving the pesticide localization and delivery efficiency. The carrier exhibits a high thiabendazole (Tbz) loading capacity of 38.14% owing to its nanoporous structure. The LA coating functions as a pH- and temperature-responsive barrier, regulating pesticide release to prolong the treatment duration and minimizing the need for repeated applications. The carrier demonstrates controlled release rates of 80.73% at pH 5 and 96.55% at 40 °C, confirming its dual-stimuli responsiveness. In vitro assays reveal 92.26% inhibition of Botrytis cinerea at 1 μg mL–1, while in vivo experiments on tomato plants and fruits show complete inhibition at 200 μg mL–1. Additionally, the developed composites adhere strongly to leaves through electrostatic and hydrogen-bonding interactions, reducing the loss of pesticide due to rain erosion. Overall, DE-MOF-Tbz-LA presents a promising and efficient alternative to conventional pesticide applications.
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PubMed
高影响因子
CHINESE CHEMICAL LETTERS
·
2024
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IF 9.4
Linxin Zheng,Shuai Li,Liuting Zhang,Tao Zhong,Xiuzhen Wang,Ting Bian,Petr Senin,Ying Wu
Magnesium hydride (MgH 2 ) demonstrates immense potential as a solid-state hydrogen storage material, while its commercial utilization is impeded by the elevated operating temperature and sluggish reaction kinetics. Herein, a MOF derived multi-phase FeNi 3 -S catalyst was specially designed for efficient hydrogen storage in MgH 2 . Experiments confirmed that the incorporation of FeNi 3 -S into MgH 2 significantly lowered the desorption temperature and accelerated the kinetics of hydrogen desorption and reabsorption. The initial dehydrogenation temperature of the MgH 2 + 10 wt% FeNi 3 -S composite was 202°C, which was 123°C lower than that of pure MgH 2 . At 325°C, the MgH 2 + 10 wt% FeNi 3 -S composite released 6.57 wt% H 2 (fully dehydrogenated) within 1000 s. Remarkably, MgH 2 + 10 wt% FeNi 3 -S composite initiated rehydrogenation at room temperature and rapidly absorbed 2.49 wt% H 2 within 30 min at 100°C. Moreover, 6.3 wt% H 2 was still retained after 20 cycles at 300°C, demonstrating the superior cycling performance of the MgH 2 + 10 wt% FeNi 3 -S composite. The activation energy fitting calculations further evidenced the addition of FeNi 3 -S enhanced the de/resorption kinetics of MgH 2 ( E a = 98.6 kJ/mol and 43.3 kJ/mol respectively). Through phase and microstructural analysis, it was determined that the exceptional hydrogen storage performance of the composite was attributed to the in-situ formation of Mg/Mg 2 Ni + Fe/MgS and MgH 2 /Mg 2 NiH 4 + Fe/MgS hydrogen storage systems. Further mechanistic analysis revealed that Mg 2 Ni/Mg 2 NiH 4 served as “hydrogen pump” and Fe/MgS served as “hydrogen diffusion channel”, thus accelerating the dissociation and recombination of hydrogen molecules. In conclusion, this work offers insight into catalysts combining transition metal alloys and transition metal sulfide for exerting muti-phase synergistic effect on boosting the dehydrogenation/hydrogenation reactions of MgH 2 , which can also inspire future pioneering work on designing and fabricating high efficient catalysts in other energy storage related areas.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Guangyuan Chen,Linzhen Wu,Zeru Wang,Ruixi Liu,Chuan Tan,Yi Tan,Yawen Liu,Miaomiao He,Hao Zhang,Yikun Huang,Jiongzhi Zhu,Tao Duan,Lin Zhu
The capture of radioactive gaseous iodine is essential for the sustainable development of nuclear energy and the long-term safe supply of nuclear fuel. However, the presence of nitrogen oxides in the exhaust gas generated during spent fuel reprocessing poses significant challenges to the stability of iodine adsorbents. It is crucial to consider the impact of NOx on the structure and adsorption performance of the materials. We report here the development of an aluminum-based metal–organic framework (MOF), CAU-1, engineered for efficient iodine capture. Synthesized through a cost-effective and straightforward method, CAU-1 exhibits excellent structural stability and robust adsorption performance, with a maximum iodine vapor adsorption capacity of 1277.18 mg/g at 130 °C and methyl iodide adsorption capacity of 533.10 mg/g, highlighting its potential for efficient iodine vapor removal. Notably, CAU-1 retains its structural integrity and iodine adsorption performance even in the presence of 5 % NO 2 , maintaining high adsorption capacities for I 2 (1129.41 mg/g) and CH 3 I (436.79 mg/g). Mechanistic analysis revealed the key role of the –NH 2 group in the iodine adsorption process. Additionally, co-adsorption studies with I 2 and NO 2 showed that CAU-1 can still capture iodine in the form of both I 2 and I 3 - in the presence of NO 2 . This study illustrates the potential of CAU-1 as an effective industrial adsorbent for removing iodine from NO 2 -containing gas streams.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2024
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IF 4.1
Jinting Zhu,Linhan Fan,Wenqing Li,Xinru Qi,Changyan Sun,Wenjun Li,Zhidong Chang
The accumulation of heavy metal ions in nature will not only lead to the further deterioration of the environment, but also directly do harm to human health. And as a gas pollutant, excessive inhalation of formaldehyde is also harmful to human health. Herein, a novel Eu-MOF was synthesized by solvothermal method using Eu 3+ , 2-pyridine-4-yl-3H-benzimidazole-5-carboxylic acid (HL) and 1,10-phenanthroline (phen), which can be used as a ratio fluorescent probe to detect Hg 2+ , Cd 2+ and formaldehyde, and the limits of detection(LOD) can reach 34, 9.91 and 194 nM respectively. Among them, the LOD of Eu-MOF for Cd 2+ has reached the lowest level at present. Noticeable, Eu-MOF can detect formaldehyde in both liquid and gas phases, and the response time is extremely short. In addition, Eu-MOF has been applied to trace detection of Hg 2+ and Cd 2+ in tap water, lake water and sea water with satisfactory recoveries (ranging from 98.10 % to 103.0 %). A program has been developed for quickly calculating the concentration of the substances to be detected by capturing the fluorescent color of the solvents under the ultraviolet light.
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高影响因子
Nanomedicine-Nanotechnology Biology and Medicine
·
2024
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IF 4.2
Yuan Gao,Jun Wang,Weiwei Zhang,Fei Ge,Wanzhen Li,Feiyang Xu,Ting Cui,Xing Li,Kai Yang,Yugui Tao
Calcium overload therapy refers to the condition of intracellular Ca 2+ overload, which causes mitochondrial damage and leads to the uncontrolled release of apoptotic factors into the cytoplasm through the open mitochondrial permeability pore. Based on this, it is playing an increasingly important role in the field of oncology due to its good efficacy and small side effects. However, the regulation of calcium homeostasis by cancer cells themselves, insufficient calcium ions (Ca 2+ ) in tumor sites and low efficiency of calcium entering tumor have limited its efficacy, resulting in unsatisfactory therapeutic effect. Therefore, a novel CAP/BSA@TCP-ZIF-8 nanoparticle drug carrier system was constructed that can provide Ca 2+ from exogenous sources for pH-controlled degradation and drug release at the same time. Both in vivo and in vitro experiments have proved that the nanomaterial can activate TRPV1 channels and provide exogenous Ca 2+ to cause Ca 2+ overload and apoptosis, thus achieving anti-tumor effects.
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PubMed
高影响因子
危险品化学品经营许可证（带存储）