ANALYTICA CHIMICA ACTA
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2021
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IF 6.558
Ning Wu,Hao Guo,Mingyue Wang,Yujuan Cao,Lei Sun,Fan Yang,Tingting Zhang,Liping Peng,Yinsheng Liu,Wu Yang
Metal-organic frameworks (MOFs) can perform later transformation without compromising the integrity of the overall framework, and a variety of chemical reactions can be used to modify framework components. Postsynthetic modification (PSM) of MOFs has been developed as an alternative strategy that can expand the range of MOF functional groups. Considering the p-type semiconducting visible light active performance of CuBi 2 O 4 (CBO) and the unique porous nanostructure and stability of zeolitic imidazolate framework-8 (ZIF-8), in this work, a novel core-shell coordination assembled hybrid based on p-type semiconductor@MOFs (Eu-CBO@ZIF-8) is prepared for the first time via in-situ growth and postsynthetic metal exchange. A series of detailed characterizations were conducted to confirm the successful synthesis of the material. Moreover, we are focusing on using this material as a new dual-functional sensing material for simultaneous detection and removal of tetracycline (TC), which shows an outstanding analytical performance with a low detection limit of 17 nM, relatively broad linear range (0–70 μM), fast response of less than 120 s, and excellent adsorption performance (377.07 mg g −1 ) toward TC. In addition, the sensitive luminescence response caused by TC makes Eu-CBO@ZIF-8 undergo a significant color transition from dark to red under UV-lamps, which is beneficial for visual analysis with the naked eye. The possible detection and adsorption mechanisms, including coordination between Eu 3+ and the detected substance, the hydrogen bond between ligand and the detected substance, were further discussed. In addition, the practical feasibility of Eu-CBO@ZIF-8 for TC sensing was also studied, with a satisfactory recovery rate of 96.9%–104.6% and RSD ≤3.32%. These results indicate that this material can be used for the detection and adsorption of TC in actual samples.
研究领域:
材料科学
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环境科学
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分析化学
✓ 已验证
DOI
高影响因子
Materials Today Nano
·
2021
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IF 8.109
B. Yi,H. Zhao,L. Cao,X. Si,Y. Jiang,P. Cheng,Y. Zuo,Y. Zhang,L. Su,Y. Wang,C.-K. Tsung,L.-Y. Chou,J. Xie
Mixed-metal metal-organic frameworks (MM-MOFs) contain more than one type of metal node, which can improve or even introduce new features compared with the single metal frameworks. Traditionally, most of the MM-MOFs are synthesized by solution method which requires all the metal ions to form stable coordination with the ligand in a single framework and therefore limits the choice of the metal ions. In this work, Pt-doped Zn-MOF-74 (PtZn-MOF-74) has been prepared through a mechanochemical conversion approach from Pt-doped ZnO (Pt–ZnO) directly. The absence of a large quantity of solvent limits the solvation and diffusion of growth species during the mechanochemical conversion and therefore prevented the agglomeration of Pt dopants in PtZn-MOF-74. CO oxidation was used to evaluate the catalytic performance of the prepared MM-MOFs. Compared with inert Zn-MOF-74, PtZn-MOF-74 with unsaturated coordinated Pt at elevated temperature can act as the active sites to catalyze CO oxidation reaction. This study provides a novel design strategy for the synthesis of MM-MOFs with extended functionalities.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Shuo Guan,Chuantong Cheng,Yunhao Ning,Bao Zhang,Bingyu Qin,Beiju Huang
Crystal engineering using passivation to reduce perovskite defects is crucial to improving the quality of perovskite crystals and optoelectronic properties. Because of their unique properties, metal–organic framework materials have been used as an emerging and effective passivator for perovskite materials and optoelectronic devices. This paper focuses on the differences in the optoelectronic properties of zeolite imidazolium ester framework materials (ZIF-11 & ZIF-23) doped with different conjugated ring ligands for perovskite photodetectors. This paper proposes a simple and effective method to dope zeolite imidazolium ester framework nanoparticles (ZIF-11 & ZIF-23) into organic–inorganic perovskite MAPbI3 films. The crystalline quality of the perovskite films was improved after doping with ZIF-11 and ZIF-23. Meanwhile, the performance of the planar photoconductive devices was significantly improved. The photoresponsivity of the photodetector doped with ZIF-23 was 0.185A/W, and the detectivity was 4.22 × 1012 Jones. The photoresponsivity of the photodetector doped with ZIF-23 was 0.164 A/W, and the detectivity was 3.27 × 1012 Jones. The devices maintained long-time operational stability, operating without significant degradation for 480 s under the 1.2 V bias voltage operating condition. In addition, we observed a significant suppression of the ion migration process in ZIF-23 for a voltage-controlled ion migration process. The potential application of perovskite and MOF heterojunction materials for image information acquisition and storage is demonstrated.
研究领域:
材料科学
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光电技术
✓ 已验证
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
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2021
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IF 6.986
Mengya Cao,Hao Wang,Haoran Tang,Dandan Zhao,Yongxin Li
Metal–organic frameworks (MOFs) can improve the stability and activity of enzymes under the MOF encapsulation. However, it remains a challenge to explore the effects of the MOF environment on enzymatic activity in a confined space. In this work, we immobilized the enzyme inside a glass nanopore to study the catalytic activity and stability of the enzyme in the MOF environment. Horseradish peroxidase (HRP) is encapsulated in zeolitic imidazolate framework-90 (ZIF-90) and zeolitic imidazolate framework-8 (ZIF-8), which are used as the catalytic platforms. The HRP can catalyze 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)diammonium salt (ABTS) molecules to generate ABTS+ ions, and the change of the transmembrane ion current will be monitored in real time. As the concentration of H2O2 increases, the amount of produced ABTS+ will increase; thus, the ionic current increases. The effects of the MOF structure on enzyme activity and stability are also investigated. The HRP encapsulated in the MOF and modified inside the nanopore provides a novel and unlabeled design for studying enzymatic catalysis in a confined environment, which should have extensive applications in chemical-/bio-sensing, electrocatalysis, and fundamental electrochemistry.
研究领域:
生物化学
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材料科学
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分析化学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Hui Zong,Le Hu,Zhenguo Wang,Ruijuan Qi,Ke Yu,Ziqiang Zhu
It is significant to exploit novel electrode materials because at present the severe capacity decline and slow ion kinetics limit the broad application of lithium-based batteries. Herein, we have prepared the metal–organic frameworks-derived CoP anchored on Ti 3 C 2 MXene (MOFs-CoP@MXene) and fully explored its synergy as an efficient bifunctional electrode for enhanced lithium storage for the first time. It is gratifying that the prepared MOFs-CoP@MXene provides a high capacity of 706.5 mAh g −1 after 200 cycles at 0.2 A g −1 , as the anode for lithium-ion batteries (LIBs). It can provide 585.8 mAh g −1 after 1000 cycles with 0.5 A g −1 . The MOFs-CoP@MXene anode has robust lithium-ion storage capacity, indicating that it can increase the charge transfer rate and improve Li + diffusion kinetics with enhanced electrochemical activity. As lithium-sulfur batteries (LSBs) cathode, MOFs-CoP@MXene/S shows 796.9 mAh g −1 after 300 cycles at 0.2C. MOFs-derived CoP coupling with MXene exhibits enhanced capture capacity of sulfur, facilitating the conversion of polysulfides. The results show that the MOFs-CoP@MXene composite prepared for the first time are feasible as both the anode of LIBs and the cathode of LSBs.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Huilan Zhuang,Lun Wang,Sijie Shao,Haitong Jing,Panpan Xue,Tingjie Bai,Jinpeng Deng,Xuemei Zeng,Xian Qin,Shuangqian Yan
Ferroptosis has emerged as a novel approach to suppress tumor growth through the iron-dependent accumulation of lipid peroxides, providing new opportunities for cancer therapy. However, the effectiveness of ferroptosis is impeded by the substantial neutralization of reactive oxygen species (ROS), generated through the Fenton reaction, by the high level of glutathione in cancer cells. Here we report a titanium metal–organic frameworks (MOFs)-derived method to create black TiO 2 nanoparticles with excellent photocatalytic performance. The nanoparticle has a narrow bandgap of 1.02 eV, multiple discrete gap states, and a high density of oxygen vacancies (46.2 %), facilitating ROS generation under 1064-nm light irradiation. When coated with a tannic acid/Fe 3+ layer, the resulting nanocomposite possesses the ability to deplete glutathione concentration, preventing the newly generated ROS from being neutralized and promoting ferroptotic cancer cell death. Complemented by photothermal and chemodynamic effects, in vivo experiments demonstrate a high tumor inhibition rate of 89.8 %. The utilization of MOF-derived nanomaterials represents a universal strategy, offering a solution for ferroptosis-based therapy in solid tumors and contributing to the development of smart, optically active materials with diverse applications in biological contexts.
研究领域:
生物医学
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材料科学
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肿瘤学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Yating Zhong,Keying Zhang,Xinru Wang,Haibo Liang,Ying Yu,Manli Guo,Yujuan Cao,Bixia Lin
It is important to develop sensitive and accurate methods for the detection of tetracycline (TC). For this purpose, a dual emission probe Eu-DPA/BDC-(OH) 2 was developed based on the green fluorescence of the ligand 2, 5-dihydroxyterephthalic acid (BDC-(OH) 2 ), and the red fluorescence of Eu 3+ sensitized by another ligand 2, 6-pyridine dicarboxylic acid (DPA). TC was able to quench the fluorescence of ligand BDC-(OH) 2 at 545 nm by the internal filter effect (IFE), and coordinate with Eu 3+ to enhance the fluorescence at 625 nm by the antenna effect (AE). I 625 /I 545 showed a linear relationship with TC concentration with an LOD at 55 nM. At the same time, the fluorescence color of Eu-DPA/BDC-(OH) 2 changed from green to yellow to red with the increase of TC concentration. On this basis, the RGB method was also developed for the visual detection of TC with an LOD at 0.2 μM. These methods have been successfully applied for the detection of TC in fish feed and pork with recovery rates of 93 % -110 %, indicating excellent applicability in the detection of real samples.
研究领域:
分析化学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Zhenliang Zhu,Jianfei Xiao,Min Zhang,Yaoqi Huang,Shaojun Yuan
The development of ethane (C 2 H 6 )-selective porous materials for the direct production of polymer-grade ethylene (C 2 H 4 ) from a C 2 H 6 /C 2 H 4 mixture in a single energy-efficient adsorption step is of crucial importance. However, it remains a considerable challenge, particularly due to the potential detrimental effect of moisture impurities on material performance. Hence, there is an urgent need to design durable hydrophobic C 2 H 6 -selective adsorbents suitable for industrial applications. In this study, two isostructural ultramicroporous metal–organic frameworks (M−BTTB−BPY) featuring fsc topology and two-fold interpenetrated structures were synthesized via a pillar-layered method using tetradentate carboxylic ligands along with bipyridine and Zn(II) or Co(II) ions. Both frameworks demonstrated remarkable water stability, with pore environments enriched by low-polarity aromatic groups that facilitated strong interactions with C 2 H 6 molecules. Experimental adsorption isotherms further revealed excellent separation efficiency for the C 2 H 6 /C 2 H 4 gas mixture, attributed to the unique C 2 H 6 uptake capacity of Zn-BTTB-BPY (3.1 mmol/g) and a high C 2 H 6 /C 2 H 4 selectivity of 2.3 at 298 K and 1 bar. Furthermore, GCMC and DFT calculations indicated that the cooperative van der Waals interactions between the MOFs and C 2 H 6 enhanced the efficient separation of the C 2 H 6 -C 2 H 4 mixture. Notably, both MOFs exhibited significant hydrophobicity with minimal water adsorption, enabling them to effectively produce polymer-grade C 2 H 4 (≥99.9 %) directly from the C 2 H 6 /C 2 H 4 mixture, even under conditions of 100 % relative humidity.
研究领域:
化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
THERMOCHIMICA ACTA
·
2024
·
IF 3.1
Hailong Zhou,Jiuyu Chen,Yunlan Sun,Naiqiang Huang,Jiang Liu,Xuan Jiang,Baozhong Zhu
Boron (B) powder has been considered a promising high-energy material due to its high calorific value. Nevertheless, the low combustion efficiency and the difficulty in ignition restrict its application. To solve the problems, in this study, an energetic metal-organic framework (EMOF) was used as a modifier for the nano-sized B powder, and its effect on the ignition and burning performance of B powder was examined. EMOF can significantly increase the heat release of B powder and lower its initial oxidation temperature. The best improvement is achieved with 10% EMOF contents in air, while the highest heat release is obtained with 25% EMOF contents in pure oxygen. Furthermore, EMOF can also reduce the ignition delay of B powder, enhance the flame intensity, and increase the flame propagation rate. This study offers new perspectives on modifying B powder with incorporating EMOF to develop multifunctional energetic particles with improved ignition and combustion characteristics.
研究领域:
材料科学
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燃烧学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2025
·
IF 9.5
Chang'an Wang,Zuoshuai Xi,Tao Ban,Zhiyuan Liu,Yibin Luo,Hongyi Gao,Ge Wang,Xingtian Shu
The fine design and regulation of the microenvironment surrounding active sites in metal–organic frameworks (MOFs) are crucial for optimizing electron distribution and enhancing oxygen activation, thereby achieving superior catalytic performance in epoxidation reactions. In this study, we focus on the synergistic modulation of the cobalt (Co) microenvironment in MOF-74 through the introduction of lanthanum (La) sites and defect engineering. The incorporation of rare-earth La species effectively redirects the electron density of Co sites, enhancing their oxygen activation capabilities. Additionally, the presence of coordination-unsaturated Co sites facilitates rapid electron transfer from active sites to substrates, promoting the generation of superoxide radicals. Notably, the Co0.50La0.50-MOF-74-4eq sample demonstrates exceptional molecular oxygen utilization and epoxidation performance, achieving a cyclohexene conversion of 92.2% with a selectivity of 93.9% for 1,2-epoxycyclohexane at 40 °C within 1 hour. Furthermore, this catalyst exhibits broad applicability across different substrates. Density functional theory calculations, complemented by in situ analysis, confirm that molecular oxygen activation occurs at Co sites while suppressing the allylic oxidation pathway, thus favoring the conversion of cyclohexene to epoxides. This work elucidates how strategically tailoring the electronic properties around catalytic sites can dramatically influence catalytic behavior in heterogeneous catalysis, providing new insights for the rational design of advanced catalysts.
研究领域:
催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYHEDRON
·
2025
·
IF 2.6
Kuiyu Yi,Congyin Zhang
A meticulously crafted nanoscale fluorescence sensor, featuring Eu 3+ -functionalized ZIF-8 (Eu 3+ @ZIF-8), has been triumphantly synthesized utilizing a streamlined and effective process. This fluorescence sensor ingeniously harnesses the robust complexation between oxytetracycline (OTC) and Eu 3+ ions within Eu 3+ @ZIF-8, markedly augmenting the characteristic fluorescence of Eu 3+ via an exquisite antenna effect. This enhancement facilitates ultrasensitive fluorescence-based sensing of OTC. This groundbreaking application introduces a novel paradigm for OTC detection, accompanied by an exhaustive elaboration on the potential mechanism underlying OTC testing. The Eu 3+ @ZIF-8 fluorescence sensor stands as an exemplary advanced tool for OTC detection, evidenced by its remarkable attributes: swift response, unparalleled selectivity, and exquisite sensitivity. Its application in detecting spiked OTC in environmental samples, such as lake water and tap water, has demonstrated impeccable performance, validating its reliability and presenting a versatile platform technology with vast potential for environmental monitoring.
研究领域:
材料科学
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环境科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yao Zhang,Guizhen Li,Xu Wang,Mingrong Lu,Jiaxiong Li,Xiuying Fang,Wenrong Yang,Min Yang,Hongbin Wang
The development of effective methods for identifying and eliminating antibiotics from wastewater is urgently needed, and it continues to pose significant challenges. In this study, a zirconium-based metal–organic framework (UiO-66) was synthesized using a straightforward one-pot method for the dual purpose of detecting and adsorbing tetracycline (TC). Characterization by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analysis demonstrated that UiO-66 exhibited abundant surface functional groups and an exceptionally high specific surface area, resulting in a high TC removal efficiency of 85.14 % (initial concentration: 20 mg/L) over a wide pH range. The adsorption data were accurately described by the pseudo-second-order kinetic and Freundlich isotherm models. Notably, the UiO-66 material adsorbed with TC could be well regenerated at least two cycles, showing no significant loss in adsorption efficiency. Furthermore, the adsorbent demonstrated blue emission when excited at 310 nm. As the concentration of TC increased, a corresponding decrease in the fluorescence intensity of UiO-66 was observed. This change exhibited a linear correlation within the concentration range of 0.01 to 30 mg/L, achieving a detection limit as low as 0.003 mg/L. The UiO-66 probe exhibited exceptional specificity for TC and strong anti-interference capability, achieving satisfactory recoveries in the analysis of TC from real samples. These findings are poised to assist researchers in creating comprehensive strategies for the concurrent detection and elimination of antibiotics in the environment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
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