CELLULOSE
·
2023
·Vol. 30
·期 15
·9607-9623
·
IF 5.7
Wang Zhile,Yu Dehai
The photocatalytic degradation of organic pollutants represents an efficacious, energy-conserving, and eco-friendly methodology. MIL-101 is a porous crystalline material composed of metal ions (or metal clusters) and organic linkers. As a prominent metal-organic framework material, MIL-101 exhibits remarkable thermal and chemical resilience, rendering it ideal for diverse applications encompassing gas storage, separation, and catalytic processes. However, its potency in the degradation of dye molecules is impeded by its innate hydrophobicity and predisposition to precipitate in aqueous solutions. In this study, MIL-101(Fe)/cellulose nanocrystal (CNC) hybrid nanoparticles (MCs) with high photocatalytic activity were prepared by in situ growth. Owing to their unique amphiphilicity and interfacial adsorption, the Pickering emulsions stabilised by MCs showed uniform particle size and stability. The MCs were uniformly adsorbed at the oil–water interface of the emulsion and dispersed in the water phase through a three-dimensional network with clusters. This facilitated complete contact of the MCs with pollutants, thereby significantly increasing the photocatalytic efficiency. The tuneable wettability of MIL-101(Fe) induced by CNCs considerably affected the stabilization and photocatalytic degradation performance. In the presence of 0.5 wt% CNCs, the MCs had a three-phase contact angle of 92°, resulting in the highest photocatalytic degradation rate and emulsion stability of the samples studied herein. An emulsion was produced with a constant emulsification index of 100% by using 0.4 wt% MCs and an oil-phase volume fraction of approximately 0.2. The MC-stabilised emulsion system exhibited high photocatalytic degradation efficiency for Rhodamine B. Moreover, the MCs could be recycled several times while ensuring a degradation efficiency within an acceptable range. Herein we introduce a new approach for improving and fabricating green, sustainable photocatalysts for the degradation of organic pollutants in aqueous systems.
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高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 8
·216
·
IF 3.5
Liu Sinan,Wang Li,Lü Fulin,Yang Shuzhen
Fusarium graminearum is a pathogenic fungus responsible for significant plant diseases. To combat infections caused by this pathogen, we designed a pH-responsive nano-pesticide thiabendazole@MIL-101(Fe). Through systematic optimization of the loading parameters, the optimal preparation conditions were determined as follows: the thiabendazole solution concentration was 3 mg/mL, the amount of carrier used was 0.0400 g, and the loading time was 6 h. Structural characterization revealed that MIL-101(Fe) possesses a uniform octahedral structure with a smooth surface. Thiabendazole was successfully loaded into its pores without damaging the crystal structure of MIL-101(Fe). Regarding release behavior, thiabendazole@MIL-101(Fe) exhibited significant pH-responsive characteristics. After 238 h, the cumulative release rate of thiabendazole reached 74.08% at pH = 5.0, while the cumulative release rates at pH = 7.0 and 9.0 were 62.17% and 57.22%, respectively. The release kinetics study showed that the release process of thiabendazole@MIL-101(Fe) followed a first-order model. Furthermore, Ritger-Peppas model fitting suggested that the release mechanism is consistent with Fickian diffusion across pH = 5.0, 7.0, and 9.0. The prepared thiabendazole@MIL-101(Fe) displayed antibacterial activity comparable to that of conventional SC Thi and exhibited no adverse effects on wheat seed germination or seedling growth. This study provides new ideas and methods for the development of efficient and environmentally friendly nano-pesticides.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Huiying Lei,Xuechang Ren,Ning Fu,Gongrong Chen,Yajun Wei,Zhongshan Li,Hongjin Chen,Zerui Lu
To address the low Fe 3+ /Fe 2+ redox cycling efficiency of Fe-based catalysts during peroxymonosulfate (PMS) activation, this study successfully constructed a MIL-101(Fe)/WS 2 composite catalytic material. The results show that the MW 1:1 composite exhibits excellent performance toward PMS activation. By leveraging the cooperative effect of dual-metal cycling between Fe 3+ /Fe 2+ and W 4+ /W 6+ , as well as unsaturated sulfur vacancies, it achieves 97% phenol degradation within 60 min, with a reaction constant of 0.1038 min −1 , which is approximately 110 times that of single MIL-101(Fe) and WS 2 . The effects of key operating parameters such as catalyst dosage, PMS concentration, pH value and coexisting anions on phenol degradation efficiency were systematically evaluated. Through in-depth radical quenching experiments and electron spin resonance (ESR) spectroscopy analysis, it was clearly identified that sulfate radical ( SO 4 ∙ − ) and singlet oxygen ( 1 O 2 ) were the main active oxide species driving the degradation reaction. Furthermore, this study further elucidated the degradation means of phenol, proclaimed the reaction mechanisation, and evaluated the ecological toxicity of phenol and its intermediate products using the ECOSAR model. This work provides new insights for constructing efficient iron-based catalysts to activate PMS and promoting its application in the control of refractory organic pollutants.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124778
·
IF 7.5
Nanke Ma,Huiling Peng,Anqi Wei,Yuan Jin,Guangli Li
The extensive use of ciprofloxacin (CIP) has raised growing concerns regarding environmental pollution, food safety, and public health, thereby driving an urgent demand for rapid, sensitive and cost-effective detection methods. Herein, an electrochemical sensing platform is constructed by integrating MIL-101(Fe) with MWCNTs-COOH, which synergistically couples the effective analyte preconcentration and catalytic Fe–O active sites of MIL-101(Fe) with the exceptional conductivity and large surface area of MWCNTs-COOH. Notably, the reversible Fe 2+ /Fe 3+ redox cycle in MIL-101(Fe) facilitates rapid electron shuttling, further amplifying the electrochemical signal toward CIP oxidation. This dual-functional interface enables simultaneous preconcentration and signal amplification, yielding a broad linear response spanning 0.05–15 μM, accompanied by a high sensitivity of 5.6492 μA·μM −1 , as well as an ultralow LOD of 0.006 μM. Additionally, this sensor also demonstrates outstanding selectivity, good repeatability, excellent reproducibility, and durable stability, retaining approximately 96.1% of its initial current signal after 21 days of storage. Furthermore, to rigorously validate practical feasibility, acceptable recoveries between 92.9% and 105.3% were measured in honey, tap water, and CIP eye drops, demonstrating its versatility across food, environmental, and pharmaceutical matrices. Overall, this work establishes a design blueprint for high-performance electrochemical sensors based on MIL-series MOF/carbon composites, opening new avenues for rapid, on-site antibiotic monitoring to ensure food safety, environmental protection, and pharmaceutical quality control.
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高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 3
·82
·
IF 3.5
Zhao Xu,Guo Hongyan,Zhang Nannan,Yue Zhi,Gu Xungang
A novel dual Z-scheme BiOBr/NH 2 -MIL-101(Fe)/g-C 3 N 4 (BNG) heterojunction was constructed via a simple two-step solvothermal process. NH 2 -MIL-101(Fe) nanoparticles and BiOBr microspheres were uniformly deposited on the surface of g-C 3 N 4 . The prepared BNG exhibited significantly enhanced photocatalytic performance for tetracycline (TC) degradation compared to single catalyst. The optimized BNG-19 composite (with 19% NH 2 -MIL-101(Fe)/g-C 3 N 4 ) achieved 92.38% degradation of TC within 75 min under visible light, which was 2.47, 1.78, and 1.84 times higher than that of pure g-C 3 N 4 , NH 2 -MIL-101(Fe), and BiOBr, respectively. Moreover, the composite exhibited excellent stability with 82.4% removal efficiency after five cycles. The enhanced photocatalytic performance was attributed to the synergistic dual Z-scheme charge transfer mechanism, which was directly evidenced by in-situ irradiated XPS showing opposite directional shifts of Bi 4f (positive) and Fe 2p/N 1s (negative). This unique charge transfer pathway effectively promoted the separation of photogenerated carriers, with •OH and •O 2 ⁻ identified as the dominant reactive species. This work provides a new strategy for constructing g-C 3 N 4 -based dual Z-scheme heterostructures with direct mechanistic evidence for efficient environmental remediation.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Xu Zhang,Zeyu Song,Xiaochen Yu,Xiaoqian Dong,Yadi Peng,Kexin Wei,Leichao Cao,Xiao He,Zhehan Zhang,Jibin Fan
A heterostructured MIL-101(Fe)/Ce/g-C 3 N 4 (MCCN) composite was designed and synthesized by solvothermal method . The composite was characterized by XRD , SEM, EDS , FT-IR, BET, XPS , UV–Vis DRS , PL and EIS. The MCCN photocatalyst exhibits superior photocatalytic performance for the degradation of rhodamine B (RhB) and methylene blue (MB), and the efficiencies are found to be 90.36% and 88.17%, respectively. The kinetic constants k of MCCN-3 against RhB and MB dyes are 0.04094 min −1 and 0.03319 min −1 , respectively, under visible light for 75 min irradiation. The improved degradation efficiency of MCCN attributed to the enhanced light absorption and the transport channels of electron-hole pairs by forming a heterojunction between MIL-101(Fe) and Ce/g-C 3 N 4 with a favourable band position. Moreover, the possible mechanism of photocatalytic degradation of dyes was proposed though free radical trapping experiments. This work provides an effective way for constructing novel visible-light-driven photocatalyst in the removal of organic molecules from waste water .
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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.
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高影响因子
SOLID STATE SCIENCES
·
2021
·
IF 3.059
Cong Huang,Jun Wang,Mengjun Li,Xiaofang Lei,Qiang Wu
The construction of Z-scheme systems is a valid strategy to effectively enhance photocatalytic property in the field of photocatalysis . In the present work, a novel Z-scheme V 2 O 5 /NH 2 -MIL-101(Fe) heterojunction photocatalyst was prepared via a simple one-pot solvothermal method for the first time. The phase structure, morphology and optical property of the as-prepared V 2 O 5 /NH 2 -MIL-101(Fe) composite were carried out by a series of characterizations. The photocatalytic property of V 2 O 5 /NH 2 -MIL-101(Fe) heterojunction photocatalyst was investigated by photodegrading tetracycline (TC) under ultraviolet–visible light irradiation. The systematic studies indicate that the obtained V 2 O 5 /NH 2 -MIL-101(Fe) heterojunction photocatalyst possesses superior photocatalytic performance toward TC removal. Furthermore, a Z-scheme photocatalytic degradation mechanism for TC over V 2 O 5 /NH 2 -MIL-101(Fe) composites was proposed. The results show that Z-scheme V 2 O 5 /NH 2 -MIL-101(Fe) heterojunction photocatalyst has potential application in the treatment of TC wastewater. This research will broaden the studies of NH 2 -MIL-101(Fe)-based Z-scheme photocatalysts.
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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
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TALANTA
·
2017
·
IF 4.162
Xue Qian Tang,Yi Dan Zhang,Zhong Wei Jiang,Dong Mei Wang,Cheng Zhi Huang,Yuan Fang Li
In this work, Fe 3 O 4 and metal–organic framework MIL-101(Fe) composites (Fe 3 O 4 /MIL-101(Fe)) was demonstrated to possess excellent catalytic property to directly catalyze luminol chemiluminescence without extra oxidants. We utilized Fe 3 O 4 /MIL-101(Fe) to develop a ultra-sensitive quantitative analytical method for H 2 O 2 and glucose. The possible mechanism of the chemiluminescence reaction had been investigated. Under optimal conditions, the relative chemiluminescence intensity was linearly proportional to the logarithm of H 2 O 2 concentration in the range of 5–150 nM with a limit of detection of 3.7 nM (signal-to-noise ratio = 3), and glucose could be linearly detected in the range from 5 to 100 nM and the detection limit was 4.9 nM (signal-to-noise ratio = 3). Furthermore, the present approach was successfully applied to quantitative determination of H 2 O 2 in medical disinfectant and glucose in human serum samples.
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PubMed
高影响因子
TALANTA
·
2024
·
IF 5.6
Shengyuan Zhang,Haiyan Li,Dezhi Yang,Yaling Yang
In the present research, Fe-based metal-organic frameworks (MIL-101(Fe)–NH 2 ) nanoparticles were synthesized by simple solvothermal methods and used to assay Cr(Ⅵ). The MIL-101(Fe)–NH 2 performs dual functions: the 2-aminoterephthalic acid (NH 2 -BDC) ligand endows a strong fluorescence emission, and the Fe metal nodes are able to facilitate the oxidation of 3,3′,5,5′- tetramethylbenzidine (TMB) directly, resulting in the generation of oxidized-TMB (ox-TMB). Our research results showed that reducing agents such as ascorbic acid (AA) can collapse the structures of MIL-101(Fe)–NH 2 because of the reduction of Fe 3+ by AA, resulting in release of NH 2 -BDC. In the presence of Cr(Ⅵ), the fluorescence intensity of the MIL-101(Fe)–NH 2 + AA system will be decreased due to the competitive reduction of Fe 3+ and Cr(Ⅵ). Nevertheless, Cr(Ⅵ) can significantly accelerate the oxidation of TMB by MIL-101(Fe)–NH 2 as it boosts the electron transfer rate between Fe 3+ and Fe 2+ . Therefore, a fluorescent/colorimetric dual-mode platform was developed for the detection of Cr(Ⅵ) with an extensive linear range (7.5–750 μg/L and 13.3–1000 μg/L) as well as a remarkably low detection limit (0.99 μg/L and 1.98 μg/L). This MOF with the ability to release ligands not only provides inspiration for the design of new luminescent materials, but also offers a novel and reliable solution for the detection of Cr(Ⅵ).
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PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 5
·1-17
·
IF 3.8
Zhou Zhuyou,Ji Yufeng,Wang Yong,Liu Menghe,Xu Ying,Liu Ruijie,Yang Mingjie,Zou Congyang
In this study, the carbon-doped bimetallic organic framework C 60 /MIL-101(Fe,Cu) catalyst was prepared for the first time via solvothermal synthesis method. The catalysts were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and a series of other instruments. At the same time, methylene blue (MB) was used as the target degradation material to investigate the catalytic performance of H 2 O 2 for MB degradation under visible light. The degradation experiment showed that the removal rate of C 60 /MIL-101(Fe,Cu) to MB reached 99.2% within 80 min. Furthermore, cyclic experiments demonstrated good stability and reusability of the catalyst. Finally, the degradation mechanism of the reaction was deduced by quenching experiment, UV–vis diffuse reflection and mott-Schottky plots. The results show that hydroxyl radical (·OH) and superoxide radical (·O 2 − ) play a major role in the degradation of MB during photo-Fenton process.
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