APPLIED CATALYSIS B-ENVIRONMENTAL
·
2014
·
IF 6.007
Hongmei Dai,Bingquan Xia,Lan Wen,Cheng Du,Jun Su,Wei Luo,Gongzhen Cheng
Highly dispersed bimetallic AgPd nanoparticles with different composition have been successfully deposited on the metal-organic frameworks (ZIF-8) by using a simple liquid impregnation method. The resultant catalysts are composition dependent toward dehydrogenation of formic acid, while Ag 18 Pd 82 @ZIF-8 exhibits exceedingly high catalytic activity, with the turnover frequency (TOF) value of 580 h −1 , and 100% hydrogen selectivity at 80 °C.
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高影响因子
POLYMER
·
2017
·
IF 3.684
Dan Liu,Chengjian Li,Yaling Xu,Dapeng Zhou,Hongmei Wang,Ping Sun,Huasheng Jiang
Novel 8-hydroxyquinoline-terminated hyperbranched polyesters (1-HBPQ and 2-HBPQ) were synthesized and characterized by 1 H-NMR and UV-Vis analyses. Then, two erbium complexes (1-HBPQ-Er 3+ -HQ and 2-HBPQ-Er 3+ -HQ) were prepared by using 1-HBPQ or 2-HBPQ as the macromolecular ligand and 8-hydroxyquinoline (HQ) as a second ligand. The FTIR spectra and UV-Vis absorption spectra confirmed that both the macromolecular ligand and the second ligand were successfully coordinated with Er 3+ ions. The erbium complexes emitted intense near-infrared luminescence at about 1530 nm, which corresponds to the 4 I 13/2 - 4 I 15/2 transition of Er 3+ ions. Moreover, their full width at half maximum (FWHM) values were greater than 80 nm. The erbium complexes exhibited good solubility in conventional solvents and excellent near-infrared luminescence properties, indicating their promising potential as gain medium materials in optical amplification devices.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Lin Jiang,Xiaoting Ma,Zhongqiong Feng,Yan Xu
Efficient uranium extraction is critical for ensuring nuclear fuel supply and minimizing environmental risks. Although polyamidoxime (PAO) exhibits strong and selective binding toward uranyl ions, conventional PAO-based materials suffer from limited adsorption efficiency due to suboptimal pore architecture and restricted mass transfer. Herein, we combine the ice-templating technique with an in-situ growth strategy to integrate PAO with ZIF-8, forming hierarchically porous PAO@ZIF-8 aerogels for efficient uranium extraction. The integration of a hierarchical porous architecture and multiple synergistic active sites endows the aerogels with high uranium adsorption capacity of 741.6 mg g −1 in deionized water. The aerogels demonstrate good mechanical strength, hydrophilicity, and thermal stability, ensuring their structural integrity and operational reliability in practical applications. Moreover, the PAO@ZIF-8 aerogels show high selectivity for uranyl ions (UO 2 2+ ), significantly surpassing common competing ions. This superior performance arises from the synergistic effect of amidoxime functional groups and the ZIF-8 framework, which provide abundant coordination sites and rapid mass transfer pathways. With facile synthesis, high efficiency, and superior selectivity, the PAO@ZIF-8 aerogels hold great promise for practical uranium recovery from seawater and remediation of nuclear wastewater, advancing the sustainable development of nuclear energy and environmental protection.
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2025
·Vol. 39
·期 9
·e70365
·
IF 0
Jing Lv,Danni Wang,Dongjing Wang,Xiu Ning,Xiao Wang,Xiaoyang Xu,Xiaofang Wang,Bin Liu
Pathogenic microorganisms pose a growing threat to public health, particularly in light of the escalating challenge of antibiotic resistance. Consequently, there is a pressing demand for the development of innovative antimicrobial strategies. In recent years, sonodynamic antimicrobial chemotherapy (SACT) has emerged as a promising approach. In this investigation, we engineered a nanoscale organic–inorganic hybrid sonosensitizer Curcumin@ZIF-8 (CCM@ZIF-8), which featured a large surface area, high porosity, and excellent sonodynamic activity. It was mainly reflected that, under ultrasonic irradiation, CCM@ZIF-8 not only reduced the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values of the three strains but also its bactericidal effect was significantly higher than that of the nonultrasound group. Furthermore, mechanistic studies revealed that its superior sonodynamic antibacterial performance was attributed to the comprehensive effect, such as boosting intracellular reactive oxygen species generation, enhancing bacterial uptake of CCM, consistently releasing CCM, disrupting bacterial biofilms, inducing protein leakage, and ultimately achieving bactericidal effects. These insights contribute to a deeper understanding of the potential mechanisms underlying SACT. In conclusion, this study presents a novel antimicrobial therapeutic strategy for combating infectious diseases.
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ANALYTICA CHIMICA ACTA
·
2021
·
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
·
分析化学
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高影响因子
MOLECULES
·
2024
·Vol. 29
·期 22
·5330
·
IF 4.2
Shuzhen Yang,Fulin Lü,Li Wang,Sinan Liu,Zhisai Wu,Yanqin Cheng,Fan Liu
A smart and environmentally friendly pesticide system was developed that could respond to environmental stimuli while mitigating environmental risks. In this study, thiabendazole (Thi), an effective fungicide, was loaded onto zeolitic imidazolate framework-8 (ZIF-8) using the impregnation method to fabricate a pH-responsive nano hybrid delivery system (Thi@ZIF-8). The results demonstrated that Thi@ZIF-8 had a rhombic dodecahedral morphology and a loading capacity of approximately 25%. Notably, the amount of Thi released from Thi@ZIF-8 at a pH of 5.0 reached 79.54%, which was higher than that at pH 7.0 and 9.0, for 251 h. Such pH-responsive release characteristics of Thi@ZIF-8 were probably related to the pH-dependent structure stability of ZIF-8. The release mechanism of Thi@ZIF-8 conformed to non-Fickian diffusion. Additionally, Thi@ZIF-8 showed a higher control efficacy againstB. cinereacompared with Thi alone. Importantly, the ZIF-8 carrier could effectively reduce the leaching loss of Thi in soil and showed no negative effects on the three varieties of tomato seedlings, implying good biocompatibility. This work provides a novel and eco-friendly approach to control B. cinerea effectively that has great potential in modern sustainable agriculture.
研究领域:
农业科学
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材料科学
·
环境科学
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PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Dujuan Wu,Ruiqi Xin,Lingling Hu,Onder Tor,Ye Song,Song Li,Meiling Chen,Wenkai Zhu
Indoor air pollution presents a significant challenge to human health, driving the development of advanced materials for indoor environmental remediation. Metal–organic frameworks (MOFs) derived materials possess great promise as promising candidates for addressing this challenge. In this work, the delignified bamboo with multi-scale structure was employed as a substrate to fabricate ZIF-8@bamboo by in-situ and ex-situ growth strategies. The results demonstrated that the delignified bamboo exposed polysaccharided cellulose active group originally present in the bamboo cell walls. The pretreated bamboo was facilitated to the uniform growth of ZIF-8 crystals, and the loaded ZIF-8 exhibited high crystallinity and well-distributed morphological characteristics. Moreover, the successful growth of ZIF-8 increased the bamboo’s specific surface area. Additionally, the formaldehyde adsorption tests revealed that the ZIF-8@bamboo exhibited a 227.73 % improvement for formaldehyde adsorption rate at room temperature. Meanwhile, it also showed a rapid adsorption rate, high adsorption capacity, and reusable performance for formaldehyde. Furthermore, the as-prepared ZIF-8@bamboo demonstrated high removal efficacy for other indoor pollutants, including PM2.5 and PM10. Moreover, the ZIF-8@bamboo exhibited high indoor pollutant removal efficiency after five repeated cycles. Therefore, the ZIF-8@bamboo proposed in this work provides an effective solution to address indoor environmental pollution.
研究领域:
材料科学
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环境科学
·
室内环境治理
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Hongxu Tao,Haiqian Lian,Jingxian Hua,Shengui Ju,Yichang Pan
The MOF membrane has shown great promise for the gases or organic solvent mixtures separation. However, the implementation of MOF membranes remains challenged by defect formation during membrane fabrication. Herein, we reveal that the activation solvent plays a critical role in governing the degree of defect and separation performance in secondary-growth-derived ZIF-8 membranes. The isopropanol activation process exerts excellent membrane structure protection through a synergistic dual mechanism to limit the generation of ZIF-8 membrane defects during drying: (a) The isopropanol inhibits the ZIF-8 seed layer recrystallization and maintains its porous architecture to mitigate interfacial stress during drying through its elastic deformation. (b) The low surface tension of isopropanol minimizes the capillary force during solvent removal to reduce the risk of structural damage. While methanol activation and n-propanol activation have no such structure control. The optimized isopropanol-activated membrane achieves a C 3 H 6 /C 3 H 8 selectivity of 141 to show a 4.8-fold and a 4.4-fold compared to n-propanol- and methanol-activated membranes at room temperature and 1 bar. This study highlights low-surface-tension as an effective strategy for defect suppression in MOF membranes, advancing their potential for industrial hydrocarbon separations.
研究领域:
材料科学
·
化学工程
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高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2015
·Vol. 54
·期 8
·1056-1064
·
IF 3.113
Wenjuan Wang,Ling Lin,Jiang Lu,Hui Liang,Hao Feng,Lifen Hu
Triblock copolymers (MPEG- b -PCEMA- b -PHQHEMA) bearing cinnamoyl and 8-hydroxyquinoline side groups with different block length are synthesized by a two-step reversible addition fragmentation chain transfer polymerization of cinnamoyl ethyl methacrylate (CEMA) and 2-((8-hydroxyquinolin-5-yl)methoxy)ethyl methacrylate (HQHEMA), respectively. The self-assembly of MPEG- b -PCEMA- b -PHQHEMA in mixture of THF and ethanol is investigated by varying the ratio of THF and ethanol. Spheric micelles with diameter of 63.7 nm and polydispersity of 0.128 are obtained for MPEG 113 - b -PCEMA 15 - b -PHQHEMA 17 in THF/ethanol with a volume ratio (v/v) of 5/5. The PCEMA inner shell of the resulted micelles is photo-crosslinked under UV radiation to give stabilized micelles. The complex reaction of the stabilized micelles with Zn(II) is investigated under different conditions to give zinc(II)-bis(8-hydroxyquinoline)(Znq 2 )-containing micelles. When the complex reaction is carried out in THF/ethanol (v/v = 5/5) or THF/toluene (v/v = 6/4) with zinc acetate, fluorescent Znq 2 -containing micelles are obtained without obvious change in diameters and morphologies. The fluorescent micelles exhibit green emission with λ max at 520 nm. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 , 54 , 1056–1064
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高影响因子
Experimental and Therapeutic Medicine
·
2018
·Vol. 17
·期 1
·519-524
·
IF 1.41
Li Wang,Wei Gu,Ying Shi,Yubao Chen,Yan Tan
The diaphragmatic fatigue that results from airflow obstruction is associated with the severe morbidity of patients with chronic obstructive pulmonary disease. Astragaloside IV (AS‑IV) has antioxidant, anti‑apoptotic and anti‑inflammatory activities in various cell types. The present study aimed to evaluate the protective effects of AS‑IV in diaphragmatic muscle cells. Diaphragmatic muscle cells extracted from neonatal rats were treated with a series of AS‑IV concentrations (5, 10 or 20 mg/l) and the AKT inhibitor GSK690693 in the presence of interleukin‑8 (IL‑8). Cell proliferation and AKT phosphorylation were measured using Cell Counting Kit‑8 and western blot assays, respectively. Cell apoptosis and reactive oxygen species (ROS) production were evaluated using flow cytometric analysis. Caspase activity and concentrations of proinflammatory factors (tumor necrosis factor‑α, IL‑6 and IL‑8) were assessed using a caspase colorimetric assay and ELISA, respectively. IL‑8 treatment resulted in decreased rates of cell proliferation and increased rates of AKT phosphorylation, cell apoptosis, caspase 3/9 activity, ROS production and proinflammatory factor production. AS‑IV and GSK690693 treatment reversed the effects of IL‑8. The effects of AS‑IV were dose‑dependent. The present results suggested that AS‑IV is a candidate for the treatment of diaphragmatic fatigue due to its antioxidant, anti‑apoptotic and anti‑inflammatory activity.
研究领域:
药理学
·
肺科学
·
细胞生物学
·
免疫学
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 10
·5629
·
IF 6.208
Yunbo Zhao,Hongshui Wang,Xianrui Zou,Donghui Wang,Ying Fan,Xiaoyan Zhao,Mingjun Li,Lei Yang,Chunyong Liang
Bone substitutes with strong antibacterial properties and bone regeneration effects have an inherent potential in the treatment of severe bone tissue infections, such as osteomyelitis. In this study, vancomycin (Van) was loaded into zeolitic imidazolate framework-8 (ZIF-8) to prepare composite particles, which is abbreviated as[email protected]As a pH-responsive particle, ZIF-8 can be cleaved in the weak acid environment caused by bacterial infection to realize the effective release of drugs. Then,[email protected]was loaded into polyvinyl alcohol (PVA) fiber by electrospinning to prepare PVA/[email protected]composite bone filler. The drug-loading rate of[email protected]was about 6.735%. The membranes exhibited super hydrophilicity, water absorption and pH-controlled Van release behavior. The properties of antiE. coliandS. aureuswere studied under the pH conditions of normal physiological tissues and infected tissues (pH 7.4 and pH 6.5, respectively). It was found that the material had good surface antibacterial adhesion and antibacterial property. The PVA/[email protected]membrane had the more prominent bacteria-killing effect compared with the same amount of single antibacterial agent containing membrane such as ZIF-8 or Van loaded PVA, and the antibacterial rate was up to 99%. The electrospun membrane had good biocompatibility and can promote MC3T3-E1 cell spreading on it.Keywords:ZIF-8;drug loading;electrospinning;antibacterial activity;cell adhesion
研究领域:
材料科学
·
生物医学工程
·
药学
·
组织工程
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DOI
PubMed
高影响因子
Catalysts
·
2017
·Vol. 7
·期 10
·289
·
IF 3.082
Liwu Wang,Xiaonan Qu,Ying Xie,Shaowu Lv
Glutathione peroxidase is key for the removal of H2O2and other hydroperoxides and therefore, it has an important role in the maintenance of the reactive oxygen species (ROS) metabolic balance in vivo. The native enzymes of the glutathione peroxidase family (GPx) have many defects, such as instability in vitro and poor availability. GPx mimetics has become a topic of considerable interest in artificial enzyme research. Many forms of GPx mimics have been synthesized, by including selenium and tellurium (double-bridged and single-bridged, 2-substituted and 6-substituted) in a mother molecule but differences the GPx mimics enzymatic activity have rarely been compared. We designed and synthesized eight cyclodextrin derivatives and used two types of enzyme assays to determine their activities. The results show that: (a) tellurium-containing GPx mimics have higher activity than that of selenium-containing GPx mimics; (b) dual-bridged mimics have higher activity than bis-bridged mimics; and (c) 2-position modified cyclodextrin has higher activity than 6-position modified cyclodextrin.Keywords:glutathione peroxidase;mimic enzyme;cyclodextrin derivatives;enzyme activity;kinetics
研究领域:
生物化学
·
医学
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高影响因子
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