JOURNAL OF MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Peige Qin,Dengke Chen,Mengyuan Li,Dan Li,Yanmei Gao,Shiping Zhu,Mengyao Mu,Minghua Lu
In this work, a magnetic carbon nanotube-decorated nitrogen-doped carbon (CNT/Fe@N-C) composite was successfully prepared by carbonization of melamine and MIL-101(Fe) under inert atmosphere at 900 °C. In order to study the removal performance of adsorbents for the organic dyes, different mass ratios melamine/MIL-101-derived CNT/Fe@N-C were prepared. The results show that the as-prepared CNT/Fe@N-C material delivers a high performance for removal of organic dyes (Rhodamine B, malachite green, and methyl orange) with mass ratio of MIL-101(Fe) and melamine at 1:3. The experimental parameters including amount of adsorbent, pH, contact time, and initial concentration of organic dyes were investigated. Under the optimized conditions, the maximum adsorption amount of CNT/Fe@N-C for three dyes are in the range of 182.1–196.5 mg/g. The adsorption process of three dyes on the CNT/Fe@N-C material was consistent with Langmuir isotherm model and pseudo-second-order model. The results indicate that the adsorption may be the monolayer chemisorption process. The adsorption mechanism of organic dyes on the adsorbent material is may be due to the electrostatic interactions and π-π stacking interaction. Finally, the CNT/Fe@N-C material can be reused 5 times without a significant reduction in the removal rate. The results indicate that the CNT/Fe@N-C material is a promising sorbent for removing organic dyes. This work provides a new strategy to prepare CNT/metal@N-doped carbon material with excellent adsorption properties from nitrogen-free raw MOF materials by calcining a mixture of MOF and melamine at high temperature.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 11
·722
·
IF 5.4
Yin Fengqin,He Xudong,Liu Xueting,Guo Dong,Wang Jiahui,Cui Xinxin,Fang Zongping,Ye Tai,Cao Hui,Hao Liling,Xu Fei
An enhanced ratiometric fluorescence sensor Ru@HFeO@NH 2 -MIL-101 (Fe) for the determination of arsenate was constructed by using HFeO-modified NH 2 -MIL-101 (Fe) as the response signal and Ru(bpy) 3 2+ as the reference signal, which can be used for sensitive and visual detection of As(V). Because the HFeO nanoparticles were cleverly in-situ generated within the NH 2 -MIL-101(Fe) framework, the adsorption capacity of As(V) was enhanced 32% and further increased fluorescence ratio. The sensor exhibited a good linear relationship within As(V) concentration range 0.05-1 and 3–30 µM, with a detection limit (LOD) of 0.039 µM. The sensor also exhibited good selectivity and practical application performance, and can be utilized by a smartphone for visual detection of As(V). This provides an effective method for the sensitive detection of As(V) in complex environmental conditions. Graphical
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Si Duan,Yuanhua Lin,Guihong Lan,Yudi Jing,Mohd Talha
Antibiotic pollution and resistance spread pose urgent environmental risks, compounded by coexisting multiple antibiotics. To address this, this study aims to enhance the adsorption of typical antibiotics (tetracycline, TC; ciprofloxacin, CIP) through structural and functional modulation of metal-organic frameworks (MOFs). Focusing on MIL-101(Fe), a series of NH 2 -MIL-101(Fe) materials with tunable amination degrees were prepared via a mixed-ligand strategy, which involves adjusting the molar ratio of terephthalic acid (H 2 BDC) to 2-amino terephthalic acid (NH 2 -H 2 BDC). This strategy breaks through the limitations of traditional single-ligand systems. Results revealed that the NH 2 -MIL-101(Fe)-3 (H 2 BDC: NH 2 -H 2 BDC = 1:3) exhibited remarkable adsorption performance in both single and binary systems. The maximum adsorption capacities for TC and CIP reached 827.75 mg/g and 806.26 mg/g, respectively, representing significant increases of 46.34 % and 52.44 % compared to pristine MIL-101(Fe). Although the adsorption capacities decreased in the competitive binary system, they still achieved 641.17 mg/g and 588.43 mg/g for TC and CIP, respectively, outperforming most reported adsorbents. Additionally, NH 2 -MIL-101(Fe)-3 demonstrated robust tolerance to interference from inorganic ions and natural organic matter, along with excellent cyclic regeneration performance. FTIR, XPS, and density functional theory (DFT) calculations clarified mechanisms: -NH 2 groups enhanced the material's polarity and hydrophilicity, facilitating hydrogen bonding; Fe 3 + -antibiotic chelation dominated, supplemented by π-π stacking and pore-filling effects. This multi-mechanism synergy, quantified by DFT-derived binding energies (coordination > hydrogen bonding > π-π interactions). Overall, this study underscores the potential of mixed-ligand functionalized MOFs in addressing complex pollution systems, providing a theoretical foundation for high-performance adsorbent design and antibiotic pollution control.
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Abdelazeem S. Eltaweil,Eman M. Abd El-Monaem,Ahmed M. Omer,Randa E. Khalifa,Mona M. Abd El-Latif,Gehan M. El-Subruiti
MIL-101(Fe) iron-benzene dicarboxylate based metal-organic framework (MOF) was synthesized via a solvothermal method for adsorptive removal of cationic methylene blue (MB) dye from aqueous solution. The prepared MIL-101(Fe) was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, thermal gravimetric analyzer, X-ray photoelectron spectroscopy, and Brunauer–Emmett–Teller analysis tools. Various parameters affecting the removal efficiency were deliberated such as pH medium, contact time, solution temperature, MOF dosage, and initial MB dye concentrations. Results showed that MIL-101(Fe) has a maximum adsorption capacity of 58.82 mg/g at pH 9. Moreover, data obtained from isotherm studies were more fitted to the Langmuir isotherm model (R 2 = 0.997), while the adsorption kinetics followed the pseudo-second-order model. The thermodynamic studies proved that the adsorption process of MB dye onto MIL-101(Fe) was spontaneous and endothermic. Besides, MIL-101(Fe) showed higher adsorption ability towards cationic MB dye compared to the anionic methyl orange dye. Finally, the MIL-101(Fe) adsorbent showed excellent reusability for removing MB dye with efficiency exceeded 70% after ten consecutive cycles. Therefore, the as-prepared MIL- 101(Fe) could be applied as a reusable adsorbent for removing cationic dyes from their aqueous solutions.
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Guobin Huang,Zhonghua Pan,Qilong Wang,Qingqing Liang,Jiayi Wu,Yanmei Zhou,Tianju Chen,Wangchuan Xiao
Background Phthalate acid esters (PAEs) are endocrine-disrupting contaminants that require reliable trace-level monitoring in environmental waters. Magnetic dispersive solid-phase extraction (MDSPE) offers a green sample-preparation approach, but its performance is often constrained by the limited adsorption capacity, poor structural integrity, limited reusability, and high material cost of existing sorbents. Developing a stable, magnetically responsive, and high-affinity nanocomposite to overcome these limitations remains a critical challenge. Results A novel ternary magnetic MWCNTs@Fe 3 O 4 @MIL-101(Fe) nanocomposite was successfully synthesized via a facile hydrothermal strategy, where multi-walled carbon nanotubes (MWCNTs) serve as a conductive scaffold intertwining Fe 3 O 4 nanoparticles and MIL-101(Fe) crystals. This unique architecture endows the sorbent with high saturation magnetization (58.9 emu/g) for rapid separation, a large specific surface area (1127.28 m 2 /g), and abundant π-electron-rich sites for enhanced adsorption. Under optimized MDSPE conditions coupled with gas chromatography-flame ionization detection (GC-FID), the method achieved wide linear ranges (0.05-2500 μg/L), ultra-low limits of detection (0.005-0.05 μg/L), and satisfactory absolute recoveries (89.5%-110.6%) in real environmental water samples. The sorbent exhibited good reusability (≥90% after five cycles) and excellent precision (RSDs <9.0%). Greenness assessment using the AGREE metric yielded a score of 0.65, reflecting a moderate-to-high level of environmental sustainability. Significance and novelty This work presents a novel “MWCNT-bridged” strategy that successfully integrates magnetic responsiveness, high porosity, and π-π interaction sites into a single, stable sorbent, resolving the common trade-off between functionality and recoverability in magnetic MOF composites. The rationally designed nanocomposite provides a robust, highly sensitive, and environmentally sustainable platform for monitoring trace PAEs in complex aqueous matrices, advancing the development of functional materials for green analytical chemistry.
✓ 已验证
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Rui Cheng,Xuejin Mao,Jiaying Yu,Fan Liu,Lan Guo,Dongmei Luo,Yiqun Wan
In view of the molecular structure of Aristolochic acid I (AA-I) and Aristolochic acid II (AA-II), MIL-101(Fe) was selected as the sorbent to develop a dispersive solid-phase extraction (d-SPE) method for capturing the two analytes from Houttuynia cordata. The interactions between the sorbent and analytes were investigated by FT-IR, XPS and UV–Vis DRS spectra. The optimized method demonstrated good linearity with R 2 > 0.9999. The limit of detections (LODs) were 0.007 mg/L and 0.014 mg/L for AA-I and AA-II, respectively, lower than the limit stipulated by Chinese Pharmacopoeia (0.001 %, w/w). The recoveries for AA-I and AA-II were within the range of 73.3–106.4 %. The precisions of intra-day and inter-day were 0.9–5.8 % and 2.1–5.8 %, respectively. Thus, the established method demonstrated to be efficient and reliable to determine AA-I and AA-II in Houttuynia cordata.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2022
·Vol. 14
·期 8
·798-805
·
IF 3.532
Hongmei Liu,Shihao Dang,Mingdeng Li,Baogui Ye
Increasing the adsorption sites and effective interactions between sorbents and the targets can improve the solid-phase extraction (SPE) efficiency. Herein, based on the advantages of MOFs and TiO2 nanotubes (TiO2 NTs), an MIL-101(Fe)@TiO2 NT composite was prepared and applied to extract non-steroidal anti-inflammatory drugs (NSAIDs) from water samples coupled with high performance liquid chromatography (HPLC). Through characterization, it was established that MIL-101(Fe) was effectively composited on the surface and inside the TiO2 nanotubes, increasing effective adsorption sites. The obtained composite material well retains the structure and functional groups of the two original materials, and while retaining the original force with the target, it achieves a synergistic effect and produces more interactions with the target. Therefore, the extraction efficiency was greatly improved. The recovery efficiency reached 97.7–105.1% with an RSD of less than 6.71%, the detection limit was 0.1–0.2 μg L−1, and the linear range was 1–200 μg L−1 with a determination coefficient of 0.9972–0.9994. Owing to the stability of the two original materials, the composite material could be recycled and reused to extract NSAIDs up to 15 times without a loss of the recovery rate. Satisfactory results were obtained when it was used to extract NSAIDs from the Yellow River. These results indicate that the synthesized MIL-101(Fe)@TiO2 NT material is a promising sorbent to extract NSAIDs at trace concentrations with high efficiency and long lifetimes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Renjie Pan,Zongchen Li,Tian-Yang Zhang,Qi Fu,Zheng-Xiong Zheng,Jun Shi,Jian Lu,Chen-Yan Hu,Yu-Lin Tang,Mohamed Gamal El-Din,Bin Xu
Peracetic acid-based advanced oxidation processes (PAA–AOPs), which generate various reactive radicals, have garnered substantial attention for degradation emerging contaminants (ECs). However, nonselective radical-based PAA–AOPs often suffer from interference by water matrix components, causing low contaminants removal efficiency. This study explores the use of amino-(NH 2 )-functionalized metal–organic frameworks (MIL-101(Fe)-NH 2 ) as heterogeneous catalysts for PAA activation, enabling the generation of high-valent iron- (Fe)–oxo species (Fe(IV)) capable of efficiently degrading ECs (80 −100 %, within 30 min). The Fe(II) clusters in MIL-101(Fe)-NH 2 , modulated by electron-donating −NH 2 groups, play a pivotal role in Fe(IV) generation. Scavenger and probe experiments confirmed Fe(IV) as the primary reactive species responsible for ECs degradation. Density functional theory calculations demonstrated that the four-electron transfer to generate Fe(IV) has lower free energy than the two-electron transfer to generate organic radicals (e.g., CH 3 COO • and CH 3 C(O)OO • ). Furthermore, thermodynamically unfavorable CH 3 COO • desorption further promotes Fe(IV) generation. The PAA/MIL-101(Fe)-NH 2 system efficiently degraded SMX ( k app = 121.2 −287.2 M −1 s −1 ) and other ECs ( k app = 40 −432 M −1 s −1 ) with minimal interference from water matrix components and excellent reusability. This study demonstrates that MIL-101(Fe)-NH 2 is a robust catalyst for PAA activation and provides a novel approach for selectively generating Fe(IV) for ECs degradation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2026
·
IF 6.7
Xiao Liang,Haifeng Wei,Xiantao Zeng,Yan Zhang,Cheng Rui,Mingyue Shen,Fan Liu,Lan Guo,Yiqun Wan
Prepared dishes, one of the prominent modern foods, carry the risk of alternaria toxins (ATs) contamination. To address this concern, an efficient dispersed solid-phase extraction (d-SPE) method based on MIL-101(Fe) coupled with ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method was developed for the analysis of six ATs in prepared dishes. Characterization results confirmed that the synthesized MIL-101(Fe) possesses a high specific surface area and appropriate pore sizes distribution. Furthermore, computational simulations revealed that ATs could be efficiently absorbed and purified by MIL-101(Fe) via hydrogen bonding, π-π stacking, and Lewis acid-base interactions. Under optimized conditions, the method exhibited excellent linearity (R 2 ≥ 0.9990), and the limit of quantifications (LOQs) ranging from 0.07 to 0.37 μg/L, with recoveries in the range of 76.2%-108.3% and relative standard deviations (RSDs) below 9.8%. this study aims to bridge this gap by utilizing UHPLC-MS/MS to develop a robust method for the high-sensitivity and high-accuracy quantification of ATs in prepared dishes. Furthermore, the adsorption mechanism of MIL-101(Fe) for target toxins was elucidated by grand canonical Monte Carlo (GCMC) simulation and Density Functional Theory (DFT) calculation.
✓ 已验证
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 18
·7055-7074
·
IF 8.307
Rutong Song,Jun Yao,Mei Yang,Zhongbin Ye,Zhuang Xie,Xiang Zeng
Water pollution control is one of the major challenges currently faced. With the development of photocatalytic technology, an increasing number of new and efficient catalysts have been developed, but most of the catalysts have limited light capture ability and catalytic degradation efficiency. Therefore, in this work, hydrogen peroxide was further introduced to establish a photo-Fenton system to improve the photocatalytic effect by constructing a Z-scheme, and the degradation ability of the catalyst was maximized. Moreover, we successfully adhered bismuth tungstate nanosheets onto the surface of a MIL-101(Fe) framework and changed the number of active sites with iron ions of different doping amounts. We found that the number of active sites in the photo-Fenton system does not increase linearly, but increases and decreases regularly, which is similar to the change in band structure after doping. In addition, the results of the radical scavenger experiment and electron paramagnetic resonance (EPR) revealed that both hydroxide radical (˙OH) and superoxide radical (˙O2−) participated in methylene blue (MB) degradation, of which ˙OH was the main active species for pollutant degradation. Based on high-performance liquid chromatography-mass spectrometry (HPLC-MS) analysis, the possible degradation pathways were proposed. We believed that this work will provide insights into the heterojunction photo-Fenton system.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yarui Wang,Chengzhuo Yu,Sen Wang,Jin Xu,Fanglan Geng,Silong Wang,Jitao Lv,Lixia Zhao,Yawei Wang
Humic acids (HA) released during algal bloom poses a key challenge for efficient photocatalytic degradation of Microcystin-LR (MC-LR) due to their scavenging function on active species. Herein, MIL-101(Fe)/TiO 2 -P25 (M/P) was constructed to diminish the inhibitory effect of HA on the photocatalytic degradation of MC-LR. Results showed that MC-LR could be efficiently removed assigning to the photogenerated holes (h + ) and superoxide radical (O 2 •− ) oxidation under visible light irradiation, where the carboxy groups of D -glutamic acid (Glu) and methyl- D -aspartic acid (MeAsp), and Adda side chain related to MC-LR biotoxicity were selectively destroyed to achieve MC-LR detoxication. More importantly, HA exerted non-inhibitory effect on MC-LR removal by M/P. The counteracting mechanisms were studied. Firstly, the location of TiO 2 in the pore structure of MIL-101(Fe) could occupy the adsorption sites of HA, and decrease the HA adsorption on M/P. Furthermore, XPS analyses suggested the coordination of unsaturated Fe metal sites on the surface of M/P hybrids complexed with –OH and –COOH of HA, which could accelerate the electron transfer and reduce hole consumption. Thus, the inhibitory effect of HA was alleviated during photocatalytic MC-LR treatment. This work offers a possible way to remove MC-LR in an abundant HA matrix water system efficiently.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yuanhong Xie,Chenrui Liu,Dejian Li,Yun Liu
Herein, a novel composite of MIL-101(Fe) loaded with nitrogen doped carbon quantum dots (NCQDs/MIL-101(Fe), denoted as NQML), which can construct dual effect of photocatalysis and photo-Fenton for organic pollutants removal, was prepared by solvent impregnation method. Characterization methods proved that NQML had been synthesized successfully. Additionally, the adding volume of NCQDs could effectively influence the photocatalytic activities of NQML-x composites (x represents the adding volume of NCQDs) for tetracycline (TC) degradation, and NQML-8 exhibited the optimum photocatalytic performance among the studied catalysts upon visible light illumination under natural pH, which can completely degrade TC within 180 min. By comparison, the TC degradation kinetic constant in the system with NQML-8 was as 15.85 and 8.24 folds of that in the NCQDs and MIL-101(Fe) systems, respectively. The mechanism study proved that the enhanced photocatalytic performance of NQML was resulted from the visible light up-conversion property, electron-hole separation and transfer capacity of NCQDs. Meanwhile, NQML could not only produce h + but also lead to in-situ generation of O 2 - and H 2 O 2 by activation of O 2 under visible light. The generated H 2 O 2 could react with Fe(II) in MIL-101(Fe) to produce OH so as to construct a dual effect of photocatalysis and photo-Fenton in TC removal.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）