MICROCHIMICA ACTA
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2021
·Vol. 188
·期 10
·1-11
·
IF 5.833
Qin
Peige,Han Lizhen,Zhang Xiaowan,Li Mengyuan,Li Dan,Lu Minghua,Cai Zongwei
Abstract Using MIL-101(Fe) as the source of carbon and Fe, a magnetic porous carbon (MPC) material with Fe 3 C nanoparticles encapsulated in porous carbon was prepared through one-pot pyrolysis under N 2 atmosphere. With MPC as adsorption material, a stir bar sorptive-dispersive microextraction (SBSDME) method was proposed to extract and preconcentrate sulfonamides (SAs) prior to HPLC-DAD determination. To investigate their extraction ability, different MPC materials were prepared under different carbonization temperatures (600, 700, 800, 900, and 1000 °C). The material prepared under 900 °C (MPC-900) exhibited the highest extraction ability for SAs. The as-prepared MPC materials were also characterized by Raman spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, zeta potential, and other techniques. The main parameters that affect extraction were systematically studied. Under optimal conditions, favorable linearity ( R 2 ≥ 0.9938) and detection limits (0.02–0.04 ng mL −1 ) of sulfonamides were obtained. The average recoveries for spiked milk and lake water samples ranged from 76.9 to 109% and from 75.4 to 118% with RSDs of 3.10–9.63% and 1.71–11.3%, respectively. Sulfameter and sulfisoxazole were detected in milk sample. Sulfisoxazole was detected in the lake water sample. The MPC-900 material demonstrated excellent reusability. It can be reused 24 times with peak areas having no obvious decline. The method can be applied to extract ultra-trace compounds in complex sample matrices. Graphical abstract
Schematic presentation of a stir bar sorptive-dispersive microextraction (SBSDME) by using magnetic porous carbon (MPC) composites as sorbent combined with high-performance liquid chromatography for sensitive analysis of sulfonamides in milk and lake water samples.
研究领域:
分析化学
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环境科学
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF CLUSTER SCIENCE
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2023
·Vol. 34
·期 6
·3095-3103
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IF 2.8
Liu Xiangyi,Zheng Qianye,Jia Deqi,Wang Wenwen,Zhao Hong,Tao Xiansen,Sha Jingquan
To explore novel nanozymes as colorimetric biosensors with highly activities, the ternary MIL-101(Fe)@P 2 W 18 @SWNT nanocomposite was successfully fabricated based on the optimal matching principle, namely, Wells–Dawson-type polyoxometalates (POMs, H 6 P 2 W 18 O 62 abbreviated as P 2 W 18 ) were encapsulated in a custom MIL-101(Fe) cavity, and single-walled carbon nanotubes (SWNT) was then fixed. The peroxidase-like activities of MIL-101(Fe)@P 2 W 18 @SWNT nanocomposite were evaluated by detecting hydrogen peroxide (H 2 O 2 ) and glucose (GLC). Compared with the MIL-101(Fe), P 2 W 18 and SWNT, the MIL-101(Fe)@P 2 W 18 @SWNT exhibits better peroxidase-like properties and stability due to the nature of all components and their optimal synergy. Based on the excellent catalytic activity of MIL-101(Fe)@P 2 W 18 @SWNT , two colorimetric biosensors for detecting H 2 O 2 and GLC with linear ranges of 0–80 μM (H 2 O 2 ) and 0–150 μM (GLC) were constructed, and the low detection limit of 0.3 μM for H 2 O 2 and 0.2 μM for GLC are superior to the most reported nanozymes. The work opens a promising route in constructing heterogeneous MOFs and POMs-based nanozymes for biosensing application.
研究领域:
生物传感
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材料科学
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化学
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产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2019
·Vol. 26
·期 6
·1839-1850
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IF 1.947
He Lei,Zhang Yaqin,Zheng Yane,Jia Qingming,Shan Shaoyun,Dong Yanan
An effective catalyst of MIL-101(Fe)/TiO 2 composite was synthesized by solvothermal method. The resultant MIL-101(Fe)/TiO 2 was used for advanced oxidation degradation of tetracycline (TC) for the first time. The results indicated that the MIL-101(Fe)/TiO 2 showed higher TC degradation efficiency than pure MIL-101(Fe) or TiO 2 with the persulfate. Using 1 g L −1 MIL-101(Fe)/TiO 2 and persulfate at pH 7, 90.15% degradation rate was achieved under xenon lamp irradiation in 5 min for 20 mg L −1 TC. TiO 2 introduced in the composite played an important role in the degradation process, in which TiO 2 had a synergetic effect with Fe 3+ to generate Fe 2+ , Ti 3+ and radicals. Fe 2+ reacted with persulfate to produce Fe 3+ and a number of · OH to degrade TC. This reaction process was so fast that MIL-101(Fe)/TiO 2 with persulfate could degrade TC fairly rapidly. A novel TiO 2 -based metal–organic frameworks (MOFs) composite was more efficient for degrading pharmaceutical wastewater.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Catalysts
·
2019
·Vol. 9
·期 11
·906
·
IF 3.444
Jieyang Yang,Zequan Zeng,Zhanggen Huang,Yan Cui
In this work, the activation effect of vacuum thermal treatment on MIL-101(Fe) (MIL: Materials of Institute Lavoisier) was investigated for the first time. It demonstrated that vacuum thermal activation could accelerate the activation of persulfate (PS) by MIL-101(Fe), and the enhancement of the catalytic capacity of MIL-101(Fe) was mainly attributed to the change in the FeII/FeIII mixed-valence center. The results of the SEM and XRD showed that vacuum thermal activation had a negligible effect on the crystal structure and particle morphology of MIL-101(Fe). Meanwhile, the higher temperature of vacuum thermal activation caused a higher relative content ratio of FeII/FeIII. A widely used azo dye, X-3B, was chosen as the probe molecule to investigate the catalytic performance of all samples. The results showed that the activated samples could remove X-3B more effectively, and the sample activated at 150 °C without regeneration could effectively activate PS to remove X-3B for at least 5 runs and approximately 900 min. This work highlights the often-overlooked activation effect of vacuum thermal treatment and provides a simple way to improve the catalytic capacity and reusability of MIL-101(Fe) which is beneficial for the application of MIL-101(Fe)/PS systems in azo dye wastewater treatment.Keywords:vacuum thermal activation;MIL-101(Fe);persulfate;azo dye
研究领域:
环境科学
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催化
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材料科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2024
·Vol. 25
·期 18
·9855
·
IF 4.9
Yiting Luo,Rongkui Su
Tetracycline’s accumulation in the environment poses threats to human health and the ecological balance, necessitating efficient and rapid removal methods. Novel porous metal–organic framework (MOF) materials have garnered significant attention in academia due to their distinctive characteristics. This paper focuses on studying the adsorption and removal performance of amino-modified MIL-101(Fe) materials towards tetracycline, along with their adsorption mechanisms. The main research objectives and conclusions are as follows: (1) NH2-MIL-101(Fe) MOF materials were successfully synthesized via the solvothermal method, confirmed through various characterization techniques including XRD, FT-IR, SEM, EDS, XPS, BET, and TGA. (2) NH2-MIL-101(Fe) exhibited a 40% enhancement in tetracycline adsorption performance compared to MIL-101(Fe), primarily through chemical adsorption following pseudo-second-order kinetics. The adsorption process conformed well to Freundlich isotherm models, indicating multilayer and heterogeneous adsorption characteristics. Thermodynamic analysis revealed the adsorption process as a spontaneous endothermic reaction. (3) An increased adsorbent dosage and temperature correspondingly improved NH2-MIL-101(Fe)’s adsorption efficiency, with optimal performance observed under neutral pH conditions. These findings provide new strategies for the effective removal of tetracycline from the environment, thus holding significant implications for environmental protection.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
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2025
·
IF 3.9
Mingyang Xiong,Yao Zeng,Ruisi Qiu,Hongxing He,Yi Zhang,Zhifeng Nie,Bing Wang
Bisphenol A (BPA) is extensively utilized as an industrial chemical in the production of certain plastics and epoxy resins. They are frequently found in environmental water and have the potential to cause risks to both the environment and human health. To efficiently remove the endocrine disruptor BPA from aqueous solutions, sea urchin-like magnetic material Fe3O4@PDA@NH2-MIL-101 (Fe) was synthesized via hydrothermal methods. Fe3O4@PDA@NH2-MIL-101 (Fe) has excellent adsorption performance, with a theoretical maximum adsorption capacity of 300.47 mg/g for BPA. The adsorption kinetics of BPA by Fe3O4@PDA@NH2-MIL-101 (Fe) followed the pseudo-second-order kinetic model and Liu’s isotherm model. Magnetic separation experiments reveal a high recovery efficiency, maintaining 94.82% of its initial adsorption capacity after five cycles. The primary adsorption mechanisms of Fe3O4@PDA@NH2-MIL-101 (Fe) on BPA included pore filling, hydrogen bonding, π–π interaction, and Lewis acid–base interaction. Additionally, the material showed excellent removal performance of BPA, with a maximum adsorbed amount of 135.27 mg/g for total organic carbon (TOC) in the shale gas fracturing flowback fluid. These findings suggest that Fe3O4@PDA@NH2-MIL-101 (Fe) holds significant potential as an adsorbent for BPA removal from actual wastewater, offering promising prospects for practical applications.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2022
·
IF 4.326
Jiakang Wan,Ling Wang,Wentao Xu,Zehai Xu,Junsheng Yuan,Guoliang Zhang
Design and synthesis of high-efficiency and stable heterogeneous catalysts for the electro-Fenton process remain challenging. In this study, a co-doped Ce and N metal–organic framework MIL-101(Fe) heterogeneous catalyst (Ce/N-MIL-101(Fe) was synthesized by a facile one-step solvothermal method. Polyvinyl pyrrolidone played dual roles during the fabrication process, which not only acted as a nitrogen source for doping but also prevented MIL-101(Fe) molecules from aggregating and reinforcing the formation crystal with a complete polyhedral crystal shape. The introduction of Ce significantly enhanced the density of active sites and promoted the Fe3+/Fe2+ cycle of the reaction system. Owing to the specific structure and properties, the rate of electron transfer in the catalytic process was significantly promoted. The synthesized Ce/N-MIL-101(Fe) catalyst exhibited a high degradation rate for dyes (>98%) with competitive stability and reusability. Moreover, compared with common electro-Fenton catalysts usually operated in a limited pH range of 3.0–6.0, the working pH range of Ce/N-MIL-101(Fe) was widened up to 10.0. The design concept for producing abundant active sites with co-doping into frameworks can be extended to more heterogeneous electro-Fenton catalysts constituted by other porous materials.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Hao Wang,Renting Huang,Wei Mao,Hao Xu,Chutong Ling,Junru Zhao,Fan Yi,Yongxin Zhou,Jinghong Zhou
Iron-based metal-organic frameworks (MOFs) represent a potentially important tool for controlling organic pollutants . However, the structural stability of most iron-based MOFs in the aqueous environment is limited. Therefore, this study sought to improve the aqueous stability and photocatalytic activity of MIL-101(Fe) using an in-situ modification strategy. A novel and highly water-stable MIL-101(Fe)@IPA 4 was prepared using ligand regulation. Owing to the in-situ modification effect, MIL-101(Fe)@IPA 4 exhibited remarkable hydrophobicity with a water contact angle at 102.4° while maintaining minimal leaching of iron ions (0.46 mg/L), even after five cycles of photocatalysis . Under MIL-101(Fe)@IPA 4 /UV/H 2 O 2 conditions, the removal rates of ciprofloxacin and total organic carbon reached 100% and 49.16%, respectively, within 60 min. These researches suggest that introducing IPA improves the light absorption properties of MIL-101(Fe)@IPA 4 and facilitates electron-hole separation, thereby promoting the generation of active species. The ecotoxicity assessment of major degradation intermediates of ciprofloxacin was conducted using the ECOSAR system. Our findings provide novel insights for enhancing the water stability of iron-based MOFs through an in-situ modification strategy, which is crucial for pollution control efforts.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2021
·Vol. 45
·期 6
·3120-3127
·
IF 3.591
Yixuan Huang,Liyan Xie,Kangji Zhuo,Hao Zhou,Yanhui Zhang
MIL-101(Fe)-based composite materials and their application for the generation of H2 by the catalytic reduction of nitro organics are reported in this study. NaBH4 and water contribute hydrogen for the catalytic reduction of nitro organics, but the possibility of nitro organics as a potential hydrogen source is often overlooked due to the simplicity of the reaction. However, experiments have revealed that the reaction process is accompanied by the production of H2, which is affected by the concentration of nitro organics. Moreover, the reaction is more conducive to the generation of H2 compared to NaBH4 hydrolysis under the same conditions. Unlike specially catalyzing the expensive NaBH4 hydrolysis, hydrogen is a by-product of the reduction of pollutants by inexpensive catalysts (NaBH4 acted as an electron donor for the catalyst). Accordingly, the reaction mechanism of p-nitrophenol hydride reduction was optimized. This work provides a new perspective on the application of this reaction.
研究领域:
化学工程
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2023
·
IF 5.5
Huifang Feng,Yitong Sun,Qiaozhen Xu,Hong Liu
Developing efficient photocatalyst to promote the conversion of CO 2 into value-added chemicals remains challenging. Here, novel NH 2 -MIL-101(Fe)@Bi 2 MoO 6 S-scheme heterojunctions were fabricated via a solvothermal method, in which Bi 2 MoO 6 (BMO) nanoparticles uniformly growing on the NH 2 -MIL-101(Fe) (NM101) octahedrons with intimate contact interface. The resultant heterojunctions revealed significantly enhanced activity for CO 2 photoreduction. The optimal performance was achieved when the content of BMO was 10 wt%, and the formation rate of CO reached 67.0 μmol·g −1 ·h −1 under visible light illumination (with apparent quantum efficiency of 0.09 % at 450 nm), which was 3.2-fold of individual NM101. The boosting activity benefited from the formation of S-scheme heterojunction at the NM101 @BMO interfaces, which facilitated the separation of photoinduced electron-hole pairs with strong redox ability at the interface. This S-scheme charge transfer mechanism was further validated by the in-situ XPS and fluorescence probe molecular experiment. Besides, the intermediates and preliminary mechanism of photoreaction were unraveled based on in-situ DRIFTS analysis. This work provides some novel insights for designing efficient S-scheme photocatalysts for CO 2 photoreduction.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Yi-Hao Tong,Yu-Zhe Wu,Zhen-Liang Xu,Li-Han Luo,Sun-Jie Xu
This work was expected to develop a new loose NF membrane with facile materials to conduct dye/salt separation and endow it with versatile capacities to offer an applicable solution to treat textile wastewater. Ethylene vinyl alcohol (EVAL) was first chosen to fabricate loose nanofiltration (NF) membrane through non-solvent induced phase separation (NIPS) method. Besides, MIL-101(Fe) showed outstanding photocatalytic capacity in degrading organic molecules while a low-cost bio-inspired coating, catechol, was utilized to modify MIL-101(Fe). A combination of modified MIL-101(Fe) and EVAL could have a high water permeability (43.2 L·m −2 ·h −1 ·bar −1 ) with superior rejection to small molecule negative charged dyes (Chlorazol black T: 99.8%, Congo Red: 99.7%, Eriochrome black T: 98.4%) and low rejection to various salts (Na 2 SO 4 : 4.8 %, NaCl: 2.1 %, MgCl 2 : 2.9%, MgSO 4 : 4.9% and CaCl 2 : 3.3%). Meanwhile, the EVAL loose NF membrane with the best performance had excellent antifouling capacity and long-term stability in EBT/Na 2 SO 4 separation. Moreover, the membrane could degrade dyes to self-clean the membrane surface through photocatalytic process, which originated from the Fe-O clusters in MIL-101(Fe).
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Chemistry
·
2021
·
IF 5.221
Zhang Hui,Zhou Liang,Li Jing,Rong Sijia,Jiang Jianping,Liu Shengquan
Herein, we report a novel carboxymethyl cellulose (CMC)/MIL-101 (Fe)/poly(β-cyclodextrin) (β-CDP) hydrogel with high photocatalytic activity. β-CDP can significantly enhance the photoactivity of MIL-101(Fe) in the hydrogel prepared by a simple solvothermal method. The structure and property of this composite hydrogel were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Tetracycline was selected as a model pharmaceutical antibiotic to evaluate the photocatalytic activity of the composite hydrogel under visible light irradiation and darkness, respectively. This composite hydrogel shows excellent activity for degrading pharmaceutical antibiotics under visible light irradiation. The increased photocatalytic activity can be attributed to β-CDP, which acts as a promoter and affords an efficient separation of photogenerated electron-hole pairs of MIL-101(Fe). Moreover, the composite hydrogel is shown to have good water retainability. The hydrogel is inexpensive and shows high photocatalytic activity. Hence, it can be used as an efficient photocatalytic material.
研究领域:
环境科学
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材料科学
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药学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）