MOLECULES
·
2026
·Vol. 31
·期 19
·3412
·
IF 5.1
Xinyao Su,Wen Guo,Qunming Zhou,Tingting Xie,Lingyan Wu,Shangyang Wang,You Fu,Shurong Li,Wei Peng,Peijun Meng
Cancer theranostics urgently demands multifunctional nanomaterials capable of simultaneously enabling high-sensitivity imaging and multimodal synergistic therapy. In this study, a three-layer core–shell nanocomposite, NaYF4:Yb,Tm@NaGdF4:Eu@NH2-MIL-53(Fe), was designed and synthesized. The NaYF4:Yb,Tm nanoparticle core provides upconversion luminescence upon near-infrared (NIR) excitation and can serve as an excitation source for photodynamic therapy. An epitaxially grown NaGdF4:Eu intermediate shell was introduced to enhance luminescence and provide T1-weighted magnetic resonance imaging (MRI) capability. The outermost NH2-MIL-53(Fe) metal–organic framework shell was subsequently coated to provide potential chemodynamic therapy (CDT) capability. The effects of the Eu3+doping concentration, reaction temperature, reaction time, and oleic acid (OA)/1-octadecene (ODE) ratio on the anisotropic growth into a dumbbell-like morphology were examined to determine the optimal conditions. Under the optimal conditions (10 mol% Eu3+, 300 °C, 60 min, OA/ODE = 4:16), core–shell nanocrystals with regular morphology, uniform size, and the strongest upconversion luminescence were obtained. Polyvinylpyrrolidone (PVP)-mediated surface functionalization successfully induced the in situ growth of the NH2-MIL-53(Fe) outer shell, thereby constructing a three-layer core–shell nanocomposite as a potential theranostic platform. Various characterizations confirmed that the resulting composite integrates upconversion luminescence, paramagnetism, and hydroxyl radical generation capability, suggesting potential for NIR-driven dual-modal imaging-guided synergistic therapy.
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高影响因子
LANGMUIR
·
2026
·
IF 4.4
Jianguo Bai,Yanchen Zhu,Linli Qin,Hao Ren,Muhammad Wajid Ullah,Huamin Zhai
The pervasive toxicity of hexavalent chromium (Cr(VI)) to aquatic life and humans urgently demands integrated platforms capable of simultaneous detection and remediation. Herein, a bifunctional platform (CMC/PEI/MIL-53(Fe)/Nap/CP) capable of simultaneous fluorescence detection and photocatalytic removal of Cr(VI) was constructed by in situ growing MIL-53(Fe) on a carboxymethyl cellulose/polyethylenimine (CMC/PEI) matrix grafted with naphthalimide and combining it with cellulose paper (CP). In situ growth ensures the uniform dispersion of active sites, while the paper-based design enhances processability and recyclability. The protonated amino groups of PEI enrich Cr(VI) through electrostatic interactions, while MIL-53(Fe) provides photocatalytic active sites through the Fe3+/Fe2+ redox cycle. Due to the synergistic effect of adsorption and photocatalysis, the removal efficiency reached 99% within 5 h, with a reduction rate of 96%, following pseudo-first-order kinetics (k = 0.9119 h–1). Compared to other recent studies, it offers an excellent removal performance. At the same time, the enrichment effect of PEI enhanced the interaction between Cr(VI) and the naphthalimide fluorophore, achieving a detection limit of 0.34 μM and a KSV of 8.73 × 103 M–1. The good selectivity for Cr(VI) was theoretically verified through simulations by using Materials Studio software (MS). This platform provides a practical bifunctional platform for efficient fluorescence detection and removal of Cr(VI), with broad application prospects in the fields of environmental monitoring and water treatment.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124460
·
IF 7.5
Ruiting Jian,Manli He,Jiushan Cheng,Bowen Liu,Zhengduo Wang,Zhongwei Liu
Tetracycline is one of the most widely used broad-spectrum antibiotics, and its continuous release into aquatic environments has become a serious environmental concern. Although metal–organic frameworks (MOFs) have demonstrated great potential for photocatalytic wastewater treatment, conventional synthesis methods generally suffer from long reaction times and limited capability for controllable defect engineering. To address these challenges, a needle–plate pulsed discharge plasma strategy was developed for the direct synthesis of MIL-53(Fe). The effects of key plasma discharge parameters on the structure, defect structure, and photocatalytic performance of MIL-53(Fe) were investigated. Under the optimized conditions (6.2 kV, 120 min, an FeCl 3 /TPA molar ratio of 1:1, and Ar atmosphere), the obtained MIL-53(Fe) catalyst achieved an average tetracycline degradation efficiency of 91.57% within 120 min. Structural and photoelectrochemical analyses revealed that the obtained MIL-53(Fe) exists plasma-induced oxygen-vacancy-related defects while preserving the crystal framework of MIL-53(Fe). These defects promoted the separation and migration of photogenerated charge carriers, thereby significantly enhancing the photocatalytic activity under xenon-lamp irradiation. These findings demonstrate that needle–plate pulsed discharge provides an effective strategy for the controllable synthesis of defect-regulated MIL-53(Fe), offering new opportunities for developing high-performance photocatalysts for antibiotic-contaminated wastewater treatment.
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MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 9
·1-13
·
IF 6.408
Chen Jing,Li Shuying,Chen Ying,Yang Jiao,Dong Jianbin
Adenine (A) and guanine (G) are mainly found in deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) and play a crucial role in genetic information transfer and protein synthesis. In this study, NH 2 -MIL-53(Fe)/CS/MXene nanocomposites were prepared for detecting guanine and adenine. With high specific surface area, excellent water dispersion, and numerous active sites, MXene (transition metal carbides, nitrides, and carbonitrides) provides a good platform for loading primitive metal-organic frameworks (MOFs). At the same time, the problem of poor conductivity and dispersion of MOFs is solved. The electrochemical catalytic oxidation of adenine and guanine of NH 2 -MIL-53 (Fe)/CS/MXene nanocomposites was carried out by differential pulse voltammetry (DPV). Operating voltage of DPV: 0.7–0.9 V (vs. Ag/AgCl) for G, 1.0–1.2 V (vs. Ag/AgCl) for A, 0.8 V (vs. Ag/AgCl), and 1.1 V (vs. Ag/AgCl) for G and A. The concentration ranges for detecting A and G were 3–118 μM and 2–120 μM with detection limits of 0.57 μM and 0.17 μM (S/N = 3), respectively. The nanocomposite was used for detecting G and A in herring sperm DNA, and the content of G and A was found to be about 9 and 11 μM; the RSD values were 3.4 and 1.3%, respectively. Graphical abstract
研究领域:
生物化学
·
分析化学
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Journal of Environmental Sciences
·
2022
·
IF 6.796
Xuedong Du,Wenyang Fu,Pei Su,Qizhan Zhang,Minghua Zhou
An ultra-efficient electro-Fenton catalyst with porous carbon coated Fe-Mo metal (FeMo@PC), was prepared by calcining MIL-53(Fe)@MoO 3 . This FeMo@PC-2 exhibited impressive catalytic performance for sulfamethazine (SMT) degradation with a high turnover frequency value (7.89 L/(g·min)), much better than most of reported catalysts. The mineralization current efficiency and electric energy consumption were 83.2% and 0.03 kWh/g TOC , respectively, at low current (5 mA) and small dosage of catalyst (25.0 mg/L). The removal rate of heterogeneous electro-Fenton (Hetero-EF) process catalyzed by FeMo@PC-2 was 4.58 times that of Fe@PC/Hetero-EF process. Because the internal-micro-electrolysis occurred between PC and Fe 0 , while the co-catalysis of Mo accelerated the rate-limiting step of the Fe 3+ /Fe 2+ cycle and greatly improved the H 2 O 2 utilization efficiency. The results of radical scavenger experiments and electron paramagnetic resonance confirmed the main role of surface-bound hydroxyl radical oxidation. This process was feasible to remove diverse organic contaminants such as phenol, 2,4-dichlorophenoxyacetic acid, carbamazepine and SMT. This paper enlightened the importance of the doped Mo, which could greatly improve the activity of the iron-carbon heterogeneous catalyst derived from metal-organic frameworks in EF process for efficient removal of organic contaminants.
研究领域:
环境科学
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材料科学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Ximin Chen,Yingqing Zhan,Wei Yang,Ao Sun,Hongshan Jia,Junlei Tang,Bing Lin
The complicated oily wastewater containing hazardous organics post a great challenge to the membrane separation technology . Herein, a multilayer porous multifunctional MXene/MOF composite membrane with high permeability and photocatalytic degradation performance was prepared by embedding rod-shaped MIL-53(Fe) into layered MXene nanosheets and self-assembling them onto porous polyacrylonitrile fibrous mat. It was found that the embedment of rod-like MIL-53(Fe) with rough nanostructures could effectively avoid the dense physical stacking of MXene nanosheets and regulate the layer spacing, which was conducive to the enhancement of water channel and permeability of membrane. Moreover, the hydrophilic modification of TA could render the super-wetting feature (WCA=0°, UOCA>150°) and enhance the oil resistance of the membrane. Thence, the composite membrane exhibited favorable separation flux (904.3 ∼ 1226.5 L·m −2 ·h −1 ) and retention rate (99.06 ∼ 99.62%) for different O/W emulsions. In addition, the coupling of rod-like MIL-53(Fe) and MXene nanosheets endowed the composite membrane with efficient photocatalytic performance, which could degrade various dyes contained in oily wastewater (CV: 62.4%, MeB : 99.0%, CR: 79.5%, MO: 84.1%). Overall, this study opens up a new way for the preparation of super-wetting and multi-functional fibrous composite membrane, showing the broad application prospects in the purification of multi-component oily wastewater.
研究领域:
环境科学
·
材料科学
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Catalysts
·
2026
·Vol. 16
·期 9
·759
·
IF 4.5
Shuangyan Meng,Bin Liu,Jijie Zhao,Kaizhou He,Minglin Xie,Xiangqian Wang,Zhiwang Yang,Xiaoping Gao
Developing cost-effective photocatalysts with high activity remains a key challenge in photocatalysis. In this study, a low-cost nickel phosphide (Ni2P) cocatalyst was combined with MIL-53(Fe) to fabricate Ni2P/MIL-53(Fe) nanocomposites via a simple hydrothermal method. The as-prepared composites were systematically characterized by XRD, FT-IR, SEM, UV-vis DRS, PL, and EIS to evaluate their structural, morphological, optical, and electrochemical properties. The introduction of Ni2P significantly promoted the separation of photogenerated electron–hole pairs on the MIL-53(Fe) surface, thereby enabling valence band holes (h+) to participate in alcohol oxidation, as confirmed by photoelectrochemical analysis. Under optimized conditions, the Ni2P/MIL-53(Fe) nanocomposite achieved a significant photocatalytic alcohol conversion rate of 74%, which is 7.4-fold and 2.5-fold higher than those of pristine Ni2P and MIL-53(Fe), respectively. Furthermore, mechanistic studies revealed that valence band holes are primarily responsible for the selective oxidation of aromatic alcohols.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Wei Dong,Chunyan Du,Yin Zhang,Jiao Cao,Jingyi Jiang,Lu Zhou,Guanlong Yu,Yulv Zou,Huaiyuan Peng,Rong Yan,Yu Yang
Visible light-driven photocatalysis often struggles with fast recombination of photogenerated electron-hole pair and unsatisfactory degradation efficiency of hazardous micropollutants, such as antibiotics. Constructing an effective heterojunction can address these challenges. In this study, a novel S-scheme MIL-53(Fe)/FeOCl heterojunction composite was synthesized using a hydrothermal method. Factors influencing oxytetracycline (OTC) removal and the underlying reaction mechanism were investigated. The MF-10 composite demonstrated a remarkable removal efficiency of 90 %, significantly higher than that of MIL-53(Fe), which was 54 %. Even after six cycles, the degradation efficiency only decreased by 8 %, and the composition of MF-10 remained unchanged, indicating excellent durability. The photocatalytic process involves crucial reactive species such as · OH, SO 4 • – , O 2 • – , and h + . The heterojunction construction extends the absorption range of visible light, and the internal electric field enhances the separation of photogenerated electron-hole pairs while maintaining robust electron and hole activity. Additionally, photogenerated electrons facilitate the Fe(II)/Fe(III) cycling, resulting in the production of more reactive species for OTC degradation. This work introduces a novel approach to enhance the activity of photocatalysts and provides valuable insights into the design of peroxydisulfate activators.
研究领域:
环境科学
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材料科学
·
光催化技术
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Ruina Xuan,Jiwen Chen,Yixin Dou,Zhuo Jiang,Xiaofang Li,Deng Ding,Chunlei Wang,Juntao Yan,Linbing Sun
Dual-co-catalyst-modified photocatalysts enhance charge separation efficiency, but the traditional dual co-catalyst is still difficult to get a high separation efficiency due to size and aggregation. Herein, we report bimetallic MIL-53(Fe/Mn) as dual co-catalysts with separate electron and hole mediators. CdS NPs were in-situ grown into MIL-53(Fe/Mn) at varying ratios. 20 %CdS/MIL-53(Fe/Mn) composites shown optimum photocatalytic CO 2 reduction activity. The XPS results shown the strong interaction between CdS and MIL-53(Fe/Mn). The EPR measure proved the carriers of CdS can be transferred to MIL-53(Fe/Mn) oxidation cluster by the oxo-Fe(III)/Fe(II) and oxo-Mn(II)/Mn(III) redox cycling, and the results also suggest the oxo-Fe(III) and oxo-Mn(II) were redox active sites. We believe the approach that bimetallic MOFs act as dual cocatalyst to improve the photocatalytic activity would open a new avenue for the separation efficiency of photo-generated charge carriers.
研究领域:
材料科学
·
环境科学
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高影响因子
Journal of Analytical Methods in Chemistry
·
2023
·
IF 2.6
Xiuzhen Yang,Changye Wang,Bin Zhou,Shuangchan Cheng
Iron-based organic frame material MIL-53 (Fe) was synthesized by the hydrothermal method with Cu2+ incorporated to obtain bimetallic composite MIL-53 (Fe, Cu). The structure and morphology of the material were characterized by SEM, XRD, BET, FTIR, XPS, and zeta potential. The adsorption performance of MIL-53 (Fe, Cu) on methyl orange was tested under a variety of conditions, including the effects of pH and material dosage, by the static adsorption test. The results show that under the condition of pH = 7, a temperature of 30°C, and an adsorbent dosage of 20 mg, the removal rate of MIL-53 (Fe, Cu) for methyl orange can reach more than 96% within 4 h, and the maximum adsorption capacity after fitting by the thermodynamic model can reach 294.43 mg/g, showing the excellent adsorption performance of MIL-53 (Fe, Cu) on methyl orange. In addition, by exploring the adsorption mechanism of MIL-53 (Fe, Cu) on methyl orange, it is found that the adsorption of MIL-53 (Fe, Cu) on methyl orange depends on chemical adsorption, as evidenced by combining Fe3+ and Cu2+ in the material with methyl orange molecules to form complexes to achieve adsorption. While the specific surface area of the material had no obvious effect on adsorption, the effects of pH, temperature, and concentration were explored. At a pH of 6.5, greater adsorption occurred at higher temperatures, as determined by thermodynamic model fitting, as well as with higher initial methyl orange molecule concentration.
研究领域:
材料科学
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环境化学
·
分析化学
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DALTON TRANSACTIONS
·
2016
·Vol. 45
·期 19
·7952-7959
·
IF 4.177
Qiao Sun,Min Liu,Keyan Li,Yitong Han,Yi Zuo,Junhu Wang,Chunshan Song,Guoliang Zhang,Xinwen Guo
A series of MIL-53(Fe)-type materials, Fe(BDC)(DMF,F), were prepared by using different ratios of n(FeCl3)/n(FeCl2), which have varied amounts of Fe2+ in their frameworks. From FeCl3 to FeCl2, the structures of the synthesized samples transform from MIL-53(Fe) to Fe(BDC)(DMF,F). Along with this structure transformation, the crystal morphology goes through a striking change from a small irregular shape to a big triangular prism. This phenomenon indicates that the addition of FeCl2 is beneficial for the formation of a Fe(BDC)(DMF,F) structure. The catalytic activity of these iron-containing MOFs was tested in phenol degradation with hydrogen peroxide as an oxidant at near neutral pH and 35 °C. The degradation efficiency of these samples increases gradually from MIL-53(Fe) to Fe(BDC)(DMF,F). 57Fe Mössbauer spectra reveal that Fe2+ and Fe3+ coexist in the Fe(BDC)(DMF,F) framework, and the highest amount of Fe2+ in the sample prepared with mixed FeCl3 and FeCl2 is 26.0%. The result illustrates that the amount of Fe2+ in the samples can be controlled using varied n(FeCl3)/n(FeCl2) in the feed. The diverse amount of Fe2+ in this series of FeMOF materials exactly explains the distinction of reaction efficiency. The iron leaching tests, structures of the fresh and used catalysts, and the data of the recycling runs show that the Fe-containing MOFs are stable in this liquid-phase reaction.
研究领域:
材料科学
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环境化学
·
催化
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高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Xianjin Qi,Guizhi Yan,Boyu Du,Mengmeng Wang,Yongkui Li
Arsenic (As) contamination is a global problem that requires innovative remediation, this study successfully synthesized a novel MnFe 2 O 4 -Zn/Co ZIFs@MIL-53(Fe) (MFZM) using a solvent method to remove As(V) from contaminated water. The MFZM exhibited a rhomboidal dodecahedron structure with a high specific surface area of 158.93 m 2 /g, which contributed to its exceptional adsorption performance under both acidic and neutral pH conditions. Notably, the adsorption capacity for As(V) reached approximately 599.90 mg/g at an equilibrium concentration of 500 mg/L, surpassing the performance of several previously reported adsorbents. The kinetic modelling results indicated that the adsorption process followed a pseudo-second-order mechanism, suggesting chemisorption as the dominant process. However, the isotherm studies demonstrate favorable single-layer adsorption, with the Langmuir model providing the best fit for the experimental data. The X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) analysis revealed that the Fe/Mn/Co on the MFZM surface can hydrolyze and generate Fe/Mn/Co-OH groups under pH conditions ranging from 3 to 7, facilitating the formation of stable coordination complexes with As(V). Furthermore, the MFZM provided abundant positively charged adsorption sites that effectively attracted HAsO 4 2− via electrostatic interactions, leading to efficient As(V) removal. These findings underscore the potential of the MFZM as a promising adsorbent for the effective remediation of As-contaminated wastewater, supporting sustainable environmental management.
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