Materials Today Communications
·
2025
·
IF 4.5
Biying Zhong,Dingjun Wang,Xiaotong Lai,Xiao Huang,Qiaowen Wang,Xinghan Ren,Xinyue Shen,Li Liu,Tiantian Liu
In recent years, the burden of disease caused by Staphylococcus aureus and Escherichia coli infections has been significant. Currently, the development of antibiotics faces severe challenges, as the long-term misuse of traditional antibiotics has accelerated the evolution of resistance, while the pace of novel drug development lags far behind the rate of bacterial evolution. Therefore, the development of new antibacterial agents is urgently needed. This study presents a metal-organic framework composite material loaded with zinc oxide and kaempferol (MIL-101(Fe)@Zn-KF). The prepared material was characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), ultraviolet-visible spectrophotometry (UV-Vis), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and zeta potential analysis. Peroxidase-like activity, biosafety and antioxidant property of the composite were evaluated. The in vitro antibacterial effect of the composite against Staphylococcus aureus and Escherichia coli was investigated using the plate coating method and bacterial growth curves experiment. The synthesized material exhibited multifunctionality, such as enzyme-like activity, antibacterial property and antioxidant capacity. Compared to MIL-101(Fe)@Zn, MIL-101(Fe) and kaempferol alone, the MIL-101(Fe)@Zn-KF composite demonstrated superior antibacterial effect, with inhibition rate of 98.76% and 98.34% against Staphylococcus aureus and Escherichia coli , respectively. MIL-101(Fe)@Zn-KF was able to catalyze hydrogen peroxide to generate reactive oxygen species, which synergized with the composite itself to exert bactericidal effect. Systematic evaluation of the cytotoxicity and hemolytic effect of MIL-101(Fe)@Zn-KF revealed the excellent biosafety and clinical potential of the composite. In summary, the composite material synthesized in this study combined peroxidase-like activity, antibacterial performance, antioxidant capacity and excellent biocompatibility, providing new insights for the development of efficient and safe antibacterial materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zejun Cao,Ruixi Xiao,Yuxia Chen,Jiangtao Dong,Xuezhong Du
The widespread global use of paraquat (PQ) is attributed to its high herbicidal efficacy and low cost, however, the unresolved issue of its fatal toxicity to humans after ingestion remains a major challenge. The nanocarriers MIL-101(Cr)@MoS 2 @Fe 3 O 4 (MMF) are synthesized to load PQ through the strong π–p electron coupling between the delocalized π electrons of PQ and the localized p electrons of S atoms of MoS 2 at the interface, and then encapsulated with chitosan to construct magnetically recyclable PQ nanoherbicides with excellent stability and biosafety. The release of PQ from the nanoherbicides in simulated human gastrointestinal environments is inhibited (“PASS0” logic gate) from the source, thereby enhancing user safety. Under natural sunlight conditions, the near-infrared photothermal effect of MMF weakens the strong interfacial π–p electron coupling between PQ and MMF, resulting in the release of PQ (“YES” logic gate). The PQ nanoherbicides maintain the herbicidal efficacy of bare PQ in practical applications. The residual nanoherbicides can be easily recovered using magnets, with the collection ratios of 97.8 % and 91.1 % in water and soil, respectively, at a magnetic field strength of 0.5 T. Seed dressing, cytotoxicity, and mouse models demonstrate that the nanoherbicides have excellent biosafety for both plant growth and PQ-ingesting users. The creative PQ nanoherbicides simultaneously address the challenging issues of user safety, herbicidal efficacy, and environmental friendliness from the source.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yi-Lin Liu,Changgui Guo,Ping Cao,Qingyan Zhang,Ling Wang,Qingyi Zeng
The rapid development of the nuclear industry has made the efficient treatment of uranium-containing wastewater a significant challenge in environmental radiochemistry. This study aimed to develop a high-performance adsorbent for the removal of UO 2 2+ from water. A series of MIL-125/Ti 3 C 2 nanocomposites were successfully constructed via an in-situ solvothermal method, by integrating two-dimensional Ti 3 C 2 MXene with rich surface functional groups and porous MIL-125(Ti) MOF. The composite material not only retained the regular pore structure of MIL-125 but also exposed a greater number of active sites, exhibiting optimal adsorption performance. Under neutral conditions (pH = 7), the adsorption of U(VI) onto MIL-125/Ti 3 C 2 –2 followed the pseudo-second-order kinetic model and reached equilibrium within 50 min, with a remarkable maximum adsorption capacity of 661.07 mg/g, clear superior to most reported adsorbents. The adsorption isotherm fitted the Langmuir model, indicating monolayer chemisorption. Furthermore, the material demonstrated excellent anti-interference ability and selectivity in the presence of various coexisting ions (except for Cu 2+ and Ca 2+ ) and humic acid, along with satisfactory regeneration performance (85.6% retention after 5 cycles). The adsorption mechanism involves strong coordination interactions between surface functional groups (-NH 2 , -OH) and UO 2 2+ , while the potential reducing ability of MXene also facilitates the partial reduction of U(VI) to the more stable U(IV), forming a dual fixation mechanism of ‘synergistic adsorption-reduction’. This work provides new insights and experimental evidence for designing efficient and stable MOF/MXene adsorbents for treating actual uranium-containing wastewater.
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PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 16
·23924-23941
·
IF 0
Li Kaiqian,Zhang Xupeng,Huang Xueqin,Li Xianghong,Chang Qiaowen,Wang Jing,Deng Shuduan,Zhu Gang
In response to the escalating concerns over antibiotics in aquatic environments, the photo-Fenton reaction has been spotlighted as a promising approach to address this issue. Herein, a novel heterogeneous photo-Fenton catalyst (Fe 3 O 4 /WPC) with magnetic recyclability was synthesized through a facile two-step process that included in situ growth and subsequent carbonization treatment. This catalyst was utilized to expedite the photocatalytic decomposition of ciprofloxacin (CIP) assisted by H 2 O 2 . Characterization results indicated the successful anchoring of MIL-101(Fe)-derived spindle-like Fe 3 O 4 particles in the multi-channeled wood-converted porous carbon (WPC) scaffold. The as-synthesized hybrid photocatalysts, boasting a substantial specific surface area of 414.90 m 2 ·g −1 and an excellent photocurrent density of 0.79 μA·cm −2 , demonstrated superior photo-Fenton activity, accomplishing approximately 100% degradation of CIP within 120 min of ultraviolet-light exposure. This can be attributed to the existence of a heterojunction between Fe 3 O 4 and WPC substrate that promotes the migration and enhances the efficient separation of photogenerated electron–hole pairs. Meanwhile, the Fe(III)/Fe(II) redox circulation and mesoporous wood carbon in the catalyst synergistically enhance the utilization of H 2 O and accelerate the formation of •OH radicals, leading to heightened degradation efficiency of CIP. Experiments utilizing chemical trapping techniques have demonstrated that •OH radicals are instrumental in the CIP degradation process. Furthermore, the study on reusability indicated that the efficiency in removing CIP remained at 89.5% even through five successive cycles, indicating the structural stability and excellent recyclability of Fe 3 O 4 /WPC. This research presented a novel pathway for designing magnetically reusable MOFs/wood-derived composites as photo-Fenton catalysts for actual wastewater treatment.
研究领域:
环境科学
·
材料科学
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PubMed
KEY ENGINEERING MATERIALS
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2015
·
IF 0
Xin Liu,Yan Ying Zhao
An N, N-dimethylformamide (DMF)-functionalized metal–organic framework, namely, DMF-MIL-101(Cr), was prepared and then used for the adsorptive removal of methylene blue (MB), a cationic dye, from aqueous solutions. MIL-101(Cr) was synthesized by the hydrothermal method. Next, by dipping the MIL-101(Cr) sample in DMF, DMF-MIL-101(Cr) was synthesized. The results of X-ray diffraction analysis, Fourier transform infrared spectroscopy, and thermogravimetric analysis confirmed that DMF and MIL-101 could be combined successfully. More importantly, the MB uptake capacity of DMF-MIL-101(Cr) was significantly higher than that of MIL-101(Cr). Unlike MIL-101(Cr), DMF-MIL-101(Cr) could adsorb the entire MB in a solution with a concentration of 10.92 mg/L, owing to the electrostatic interactions between DMF and the MB molecules. In 100 mL of a 10.92-mg/L MB solution, DMF-MIL-101(Cr) can reach a state of absorbance equilibrium within10 min. After that, the adsorption process exhibited the characteristics of a zero-order reaction. This result indicates that it may be possible to exploit different functionalization methods and improve the rate of adsorption of dyes onto metal–organic frameworks.
研究领域:
环境化学
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材料科学
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吸附技术
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废水处理
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Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 18
·5451-5460
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IF 6.641
Wubin Wu,Jingchao Wang,Tianyong Zhang,Shuang Jiang,Xiaoyuan Ma,Guanghui Zhang,Xia Zhang,Xingwei Chen,Bin Li
Different fusiform-shaped MIL-88A materials were successfully prepared by adjusting the mole ratio of the central metal ion and the organic ligand and using different polar solvents. With differently shaped MIL-88A supports, several Ag/AgCl@MIL-88A (ACML) were prepared successfully using the in situ growth method. These ACML composites showed a good photocatalytic activity under the simulated sunlight and visible light. The employment of Cl− ions, anchored on the surface of MIL-88A, could improve the dispersion and stability of the loaded Ag/AgCl nanoparticles. The s-ACML composite showed excellent photocatalytic stability during the cycle tests. The in situ growth strategy provided a facile method to design and synthesize MOF composite photocatalysts for wastewater treatment. In addition, based on the related optical and electrical characterization analysis, a possible mechanism of the ACML composite photocatalytic activity was proposed.
研究领域:
材料科学
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光催化
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环境工程
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纳米复合材料
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金属有机框架材料（MOFs）
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高影响因子
ANALYTICAL BIOCHEMISTRY
·
2019
·
IF 2.507
Ying Jiang,Qi-Meng Yang,Qiu-Ju Xu,Shi-Yu Lu,Lin-Yu Hu,Mao-Wen Xu,Ying-Shuai Liu
Biothiols play critical roles in many biological processes and their aberrant is related to a variety of syndromes. A simple and reliable colorimetric method is developed in this work for biothiols detection based on an oxidase mimic, a metal organic framework (MOF) MIL-53(Fe), and a peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB). In this design, MIL-53(Fe) is utilized to catalyze the conversion of TMB to a blue colored 3,3′,5,5′-tetramethylbenzidine diimine, which can be read on a spectrophotometer at 652 nm. The oxidation-induced blue color generation can be efficiently inhibited by biothiols, thus a colorimetric analytical method is proposed for biothiols detection based on the above system. Under optimal conditions, a linear relationship in a range from 1 to 100 μM and a limit of detection (LOD) at 120 nM are achieved with Cys as a model target. The developed platform is further applied to evaluate cellular biothiols in normal (RWPE-1) and cancer (LNCap) cell lines, revealing that the overall biothiols level in LNCap is much higher than that in RWPE-1. This work renders a powerful tool for identifying cancer cells in a simple manner for biomedical diagnosis associated with biothiols.
研究领域:
材料科学
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分析化学
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纳米技术
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生物医学诊断
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生物无机化学
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高影响因子
ChemCatChem
·
2026
·Vol. 18
·期 5
·e70662
·
IF 4.1
Mengjiao Yu,Xiong-Fei Zhang,DongEn Zhang,Jianhao Qiu,Jianfeng Yao
The development of stable, efficient catalysts for fructose conversion to 5-hydroxymethylfurfural (5-HMF) remains a challenge. While sulfonation enhances Brønsted acidity in metal–organic frameworks (MOFs), it often compromises their structural integrity. This work addresses the critical challenge by demonstrating that amino (–NH 2 ) functionalization in MIL-53(Al) acts as a stabilizer, enabling the framework to withstand direct modification with chlorosulfonic acid and facilitating the introduction of sulfonic acid groups. The resulting sulfonated catalyst, MIL-53-N/S(1), achieves an outstanding 5-HMF yield of 84.3% in a biphasic system (170°C, 6 h). This work underscores the dual role of amino functionalization in stabilizing MOFs and enabling efficient acid catalysis for biomass conversion. Graphical A strategy using amino-functionalized MIL-53(Al) was proposed, where pre-grafted –NH 2 groups facilitate effective sulfonation to create abundant –SO 3 H sites without compromising framework stability. This approach addresses the challenge between acidity and structural degradation of MOFs. Under optimized conditions, MIL-53-N/S(1) achieves an HMF yield of 84.3%, demonstrating its potential for practical biomass valorization.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123915
·
IF 7.5
Jumeng Di,Xiaohua Li,Songyu Guan,Wenwen Ma,Wen Li,Jie Gao,Yuzhi Xu,Bing Yu,Hailin Cong
Nanoplastics (NPs) pose severe risks to aquatic environments, and adsorption technology provides a promising strategy for their removal. Metal-organic frameworks (MOFs) are promising adsorbents, but their practical application is limited by insufficient water stability and restricted pore accessibility. To bridge this gap, defect-engineered Al/Mn bimetallic MOFs were synthesized via mild post-synthetic ion exchange. n-Octanoic acid (OA) was employed to modulate the crystallization process of MIL-53(Al), inducing missing linker defects, suppressing excessive crystal growth, and generating mesoporous structure. Subsequently, the partial substitution of terephthalic acid linkers with manganese clusters could introduce additional active sites, alter the surface properties while maintain the overall crystallinity of MOFs. The optimized Mn-0.2-OA maintained high PS removal efficiency under acidic to neutral conditions, with removal efficiencies above 92% over pH 1–7. It also showed good tolerance to representative interference factors, retaining removal efficiencies above 97.5% in the presence of common cations and 89.37% at 40 mg/L humic acid. The adsorption of 500 nm polystyrene microspheres was mainly driven by the synergistic effects of electrostatic attraction, π-π interactions, enhanced hydrophobic affinity, and hierarchical pore structure. Meanwhile, Mn-0.2-OA achieved a Langmuir-fitted maximum adsorption capacity of 849.17 mg/g and exhibited rapid adsorption kinetics, removing 96.4% of PS within 10 min at an initial concentration of 25 mg/L. Regeneration tests further confirmed its acceptable reusability for repeated PS adsorption. This strategy provides a feasible approach for designing efficient and reusable adsorbents for nanoplastic removal from aquatic environments.
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高影响因子
CHEMICAL ENGINEERING COMMUNICATIONS
·
2025
·
IF 2
Fan Pan,Lijiang Tian,Fulong Chen,Jie Zhang
The photocatalytic efficiency of titanium dioxide(TiO2) is easy to restrict by rapid recombination of carriers, narrow spectrum response range, and low specific surface area. Constructing heterojunctions has been widely acknowledged as a viable strategy to enhance the photocatalytic performance of TiO2. Here, TiO2@MIL-101(Cr) heterojunction was synthesized via the in-situ method and applied to adsorbing and photocatalytic degrading of gaseous benzene. The findings demonstrate 40TM exhibited the best adsorption(1157.03 μgC6H6/(g·h)) and photocatalytic(817.80 μgC6H6/(g·h)) performance, which were 2.05 and 5.21 times of TiO2, respectively. The enhancement of adsorption performance probably resulted from the higher specific surface area(637.33 m2/g) and the micro-mesoporous structure. The excellent photocatalytic performance might stem from the extended wavelength response range(400–700 nm) and the Z-scheme heterojunction formation. The possible mechanism is that electrons in MIL-101(Cr) and holes in TiO2 could participate in redox reactions to generate radicals, with superoxide radicals(∙O2−) and hydroxyl radicals(∙OH) being identified as the primary active species for benzene degradation. Overall, this investigation offers a valuable reference for the application of heterojunction catalysts in the field of adsorption-photocatalytic degradation of volatile organic compounds (VOCs).
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yao Zhang,Ruixue Bai,Fanyong Yan,Yidi Wang,Yu Wang,Juanru Huang
Metal-organic frameworks (MOFs) have attracted wide attention owing to unique structural advantages and excellent catalytic properties, yet the inherent poor conductivity and limited visible-light responsiveness constrain their practical applications. Herein, a dual modification strategy based on the thermal decomposition of ligands to construct nitrogen-doped carbon dots (NCDs) decorated MIL-53(Fe) with oxygen vacancies (Ov) is reported in this work. By selectively removing thermally unstable ligands from the dual-ligand MIL-53(Fe) at elevated temperatures, oxygen vacancies were successfully introduced into the MOF framework while maintaining structural integrity. The subsequently integrated amino-rich NCDs facilitated interfacial charge transfer and contributed to improved light utilization. The optimized NCDs@Ov-MIL-53 composites exhibited excellent photocatalytic performance for the degradation of tetracycline. Under visible light irradiation, a removal rate of 93.72 % was achieved within 60 min, which was 2.8 times higher than that of the original MIL-53 (Fe). Systematic characterization showed that oxygen vacancies promoted carrier separation and created active sites, while NCDs acted as electron acceptors. A new insight into defect engineering through ligand-selective pyrolysis is provided by this work and offers a viable strategy for the design of MOF-based photocatalysts for environmental applications.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Guoxiang Yang,Longyang Wang,Chencheng Zhang,Ping Li,Hao Du,Yanjie Mao,Mengyi Qiu,Qiang Li,Derek Hao,Qi Wang
Bacterial infection threatens human health, so the design of efficient and stable photocatalytic antibacterial materials has attracted widespread attention. In this regard, a novel photocatalyst GQDs/NH 2 -MIL-125 (GQDs: graphene quantum dots) was prepared by the solvothermal method for photocatalytic disinfection. Since the addition of GQDs enhanced the absorption of visible light and also accelerated the transfer of photogenerated electrons, the photocatalytic performance of GQDs/NH 2 -MIL-125 was significantly improved. 5 wt% GQDs loading sample (2-GQDs/NH 2 -MIL-125) exhibited the best antibacterial properties. The killing efficiency by 2-GQDs/NH 2 -MIL-125 against E. coli and S. aureus (10 7 CFU·mL −1 ) increased from 40 % and 75 % by NH 2 -MIL-125 to 92 % and 93 % within 60 min, respectively. Moreover, through the single-wavelength antibacterial experiments, it was found that the introduction of GQDs led to a wide-range-responsive antibacterial effect. Through photocatalytic trapping experiments and ESR analysis, the dominant roles of superoxide radicals (•O 2 – ) were confirmed in the antibacterial process. Finally, by studying the state of bacteria via TEM, confocal fluorescent images, and gel electrophoresis, it was found that the active substances not only destroyed the cell membranes but also further destroyed DNA to achieve the purpose of completely killing bacteria. This work provides a new method for the rapid disinfection of pathogenic microorganisms using GQDs-related photocatalysts.
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高影响因子
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