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Artykuły w czasopismach na temat „MIL-100(Fe)”

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Data publikacji: 25 maja 2024

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1

Chen, Zhiming, Bo Xu, Xiaomei Wang, Li Zhang, Xiaoqing Yang i Cuncheng Li. "Sandwich-like MIL-100(Fe)@Pt@MIL-100(Fe) nanoparticles for catalytic hydrogenation of 4-nitrophenol". Catalysis Communications 102 (grudzień 2017): 17–20. http://dx.doi.org/10.1016/j.catcom.2017.08.015.

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Pasaribu, Marvin Horale, Karelius Karelius, Eka Putra Ramdhani, Retno Agnestisia, Zimon Pereiz i Erwin Prasetya Toepak. "Synthesis of Mil-100(Fe)@Fe₃O₄ Composite using Zircon Mining Magnetic Waste as an Adsorbent for Methylene Blue Dye". BIO Web of Conferences 70 (2023): 02010. http://dx.doi.org/10.1051/bioconf/20237002010.

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The objectives of the present study are to synthesize MIL-100(Fe)@Fe3O4 composite and to clarify its ability as an adsorbent for methylene blue dye. The magnetite (Fe3O4) was synthesized using iron precursor from the zircon mining magnetic waste. The MIL-100(Fe) was composited with magnetite using a room-temperature in situ synthesis method. The MIL-100(Fe)@Fe3O4 composite obtained was then characterized using the Fourier transform infrared spectroscopy and X-ray diffraction. The synthesized MIL-100(Fe) and MIL-100(Fe)@Fe3O4 were then used to adsorb methylene blue dye from aqueous phase. The maximum methylene blue removal from both adsorbents was obtained at pH of 9. The adsorption kinetics showed that the adsorption followed a pseudo second-order kinetics model with the rate constant values for MIL-100(Fe) and MIL-100(Fe)@Fe3O4 were 1.012 x 10-2 and 3.963 x 10-2 g/mg.menit, respectively. The results also showed that the adsorption isotherm of MIL-100(Fe) and MIL-100(Fe)@Fe3O4 follows the Langmuir isotherm for adsorption capacities were 137.70 and 151.47 mg/g, respectively. The results indicate that the iron content in the zircon mining magnetic waste as precursor for synthesis MIL-100(Fe)@Fe3O4 composite can be employed as an excellent adsorbent for removal of methylene blue dye from aqueous phase.

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3

Mokhtarian, Fatemeh, Banafsheh Rastegari, Sedigheh Zeinali, Maryam Tohidi i Hamid Reza Karbalaei-Heidari. "Theranostic Effect of Folic Acid Functionalized MIL-100(Fe) for Delivery of Prodigiosin and Simultaneous Tracking-Combating Breast Cancer". Journal of Nanomaterials 2022 (12.01.2022): 1–16. http://dx.doi.org/10.1155/2022/1108865.

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The metal organic framework (MOF) member, MIL-100(Fe), is considered as attractive drug nanocarrier that may be due to the great porosity, colloidal stability, and biocompatibility. In the present study, the new electrochemical synthesis procedure was presented for MIL-100(Fe) building block, and secondly, folic acid (FA) was introduced to the structure for assessing its potential targeted ability to be entrapped by folic acid-positive breast cancer cells, MCF-7. Several techniques such as SEM, XRD, and FT-IR were used to characterize synthesized nanostructures. Both MIL-100(Fe) and MIL-100(Fe)/FA nanoparticles were between 50 to 200 nm with a slightly positive net charge with an area of 1350 and 831.84 m2/g, respectively. The prodigiosin (PG) is selected as a model drug for MIL-100(Fe) and MIL-100(Fe)/FA-targeted delivery owing to its natural fluorescence and cancer cell selectiveness. The loading capacity of both nanocarrier was around 40% with 93-97% loading efficacy. Moreover, the pH-sensitive prodigiosin release rate of MIL-100(Fe)@PG and MIL-100(Fe)/FA@PG showed that 69 to 73% of the drug was released after 24 hours in an acidic environment with around 20% unwanted leakage. The anticancer potential MIL-100(Fe)/FA cells showed the improvement of selective index (SI) from 3.21 to 12.48 which means that folic acid acts as an effective ligand. The study of cells treated with fluorescence microscopy and flow cytometry analysis reveals the dependence of the receptor on the nanoparticle through endocytosis. Considering the effects of nanoparticles on healthy cells, MIL-100(Fe) and MIL-100(Fe)/FA nanoparticles can be introduced as targeted drug delivery systems for smart targeting breast cancer cells with minimal side effects.

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4

Le Thanh Bac. "Green synthesis of MIL-100(Fe) metal-organic frameworks as a carrier for chloroquine delivery". Journal of Military Science and Technology, nr 76 (12.12.2021): 61–67. http://dx.doi.org/10.54939/1859-1043.j.mst.76.2021.61-67.

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The metal-organic framework MIL-100(Fe) was synthesized by the green process using the ultrasonic method and water. By using this approach, the energy consumption was reduced by 100 times compared to the hydrothermal method. The prepared MIL-100(Fe) was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and BET surface area measurements. The XRD pattern showed characteristic peaks of MIL-100 (Fe) with the main peaks at 6.3o, 10.3o, 11.1o, and 20.1o. The prepared MIL-100(Fe) was of particle size in a range of from 100 nm to 200 nm, and surface area of 950 m2/g with a pore volume of 0.52 cm3/g. The obtained MIL-100 (Fe) showed a high loading capacity for the chloroquine drug with a maximal capacity of 555 mg/g.

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5

Pereiz, Zimon, Yunus Pebriyanto, Oktaviani Naulita Turnip, Miranti Maya Sylvani, Karelius Karelius, Eka Putra Ramdhani, Chuchita Chuchita, Retno Agnestisia, Marvin Horale Pasaribu i Erwin Prasetya Toepak. "Synthesis of MIL-100(Fe)@Fe₃O₄ from Magnetic Zircon Mining Waste Modified by CTAB for Naphthol Dye in Water Removal". BIO Web of Conferences 79 (2023): 12005. http://dx.doi.org/10.1051/bioconf/20237912005.

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The synthesis of MIL-100(Fe)@Fe3O4 composite modified by CTAB has been reported in this study. This research begins with synthesis of magnetite (Fe3O4), using an iron precursor from zircon mining magnetic waste. The MIL-100(Fe)@Fe3O4 was composited with CTAB using a room-temperature in situ synthesis method. The MIL-100(Fe)@Fe3O4-CTAB composite obtained was then characterized using Fourier Transform Infrared spectroscopy and X-ray diffraction. The synthesized MIL-100(Fe)@Fe3O4-CTAB was then used to adsorb naphthol dye from the aqueous phase. The maximum naphthol removal was obtained at a concentration of CTAB of 0.4 M and pH of 6. The adsorption kinetics showed that the adsorption followed a pseudo second-order kinetics model, with the rate constant values for MIL-100(Fe)@Fe3O4-CTAB being 1,712 x 10-2 g/mg.menit, respectively. The results also showed that the adsorption isotherm of MIL-100(Fe)@Fe3O4-CTAB follows the Langmuir isotherm for adsorption capacities of 63,036 mg/g, respectively. The results indicate that naphthol dye can be effectively removed from the aqueous phase by using the iron content in the magnetic waste from zircon mining, which was used as a precursor for the manufacture of MIL-100(Fe)@Fe3O4-CTAB composite.

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6

Chen, Gongsen, Xin Leng, Juyuan Luo, Longtai You, Changhai Qu, Xiaoxv Dong, Hongliang Huang, Xingbin Yin i Jian Ni. "In Vitro Toxicity Study of a Porous Iron(III) Metal‒Organic Framework". Molecules 24, nr 7 (28.03.2019): 1211. http://dx.doi.org/10.3390/molecules24071211.

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A MIL series metal‒organic framework (MOF), MIL-100(Fe), was successfully synthesized at the nanoscale and fully characterized by TEM, TGA, XRD, FTIR, DLS, and BET. A toxicological assessment was performed using two different cell lines: human normal liver cells (HL-7702) and hepatocellular carcinoma (HepG2). In vitro cytotoxicity of MIL-100(Fe) was evaluated by the MTT assay, LDH releasing rate assay, DAPI staining, and annexin V/PI double staining assay. The safe dose of MIL-100(Fe) was 80 μg/mL. It exhibited good biocompatibility, low cytotoxicity, and high cell survival rate (HL-7702 cells’ viability >85.97%, HepG2 cells’ viability >91.20%). Therefore, MIL-100(Fe) has a potential application as a drug carrier.

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7

Elharony, Noura Elsayed, Ibrahim El Tantawy El Sayed, Abdullah G. Al-Sehemi, Ahmed A. Al-Ghamdi i Ahmed S. Abou-Elyazed. "Facile Synthesis of Iron-Based MOFs MIL-100(Fe) as Heterogeneous Catalyst in Kabachnick Reaction". Catalysts 11, nr 12 (29.11.2021): 1451. http://dx.doi.org/10.3390/catal11121451.

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An effective technique was proposed for the synthesis of novel α-aminophosphonates: a three-component one-pot condensation reaction of aniline, aromatic aldehydes, and triphenyl phosphite in the presence of (MIL-100(Fe)) as a heterogeneous catalyst. Initially, MIL-100(Fe) was synthesized using H3BTC and ferric nitrate at low temperature and atmospheric pressure. Further, MIL-100(Fe) was characterized using various techniques such as XRD, BET surface area, scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR), and thermogravimetric analysis (TGA). Herein, MIL-100(Fe) showed exceptional catalytic performance for the synthesis of α-aminophosphonate and its derivatives compared with conventional solid catalysts, and even homogeneous catalysts. The study demonstrated that MIL-100(Fe) is an ecofriendly and easily recyclable heterogeneous catalyst in Kabachnick reactions for α-aminophosphonate synthesis, with high yield (98%) and turnover frequency (TOF ~ 3.60 min−1) at room temperature and a short reaction time (30 min).

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8

Han, Rui, Yuanling Sun, Yanna Lin, Hao Liu, Yuxue Dai, Xiaodong Zhu, Dandan Gao, Xueying Wang i Chuannan Luo. "A simple chemiluminescent aptasensor for the detection of α-fetoprotein based on iron-based metal organic frameworks". New Journal of Chemistry 44, nr 10 (2020): 4099–107. http://dx.doi.org/10.1039/c9nj05870b.

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9

Matskan, P. A., E. V. Evdokimova i G. V. Mamontov. "MIL-100(Fe)/Diatomite Composites for Photo-Fenton Degradation of Phenol". Кинетика и катализ 64, nr 4 (1.07.2023): 418–27. http://dx.doi.org/10.31857/s045388112304007x.

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Porous materials based on metal-organic framework MIL-100(Fe) and diatomite were synthesized. Composites possess specific surface area of 322 and 441 m2/g and hierarchical porous structure with broad pores of diatomite and narrow pores of MIL-100(Fe) particles. Influence of synthesis strategy on structure of materials and their catalytic properties in photocatalytic degradation of phenol was investigated. Composite obtained with preliminary wet impregnation of iron nitrate solution show predominant formation of MIL-100(Fe) particles inside the pores of diatomite. Materials demonstrate catalytic activity in phenol degradation by photo-Fenton process. Composite synthesized without preliminary wet impregnation displays highest catalytic activity with predominant formation of MIL-100(Fe) particles on external surface of diatomite.

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10

Chen, Xi, Yanshuang Zhang, Xiangyun Kong, Zanru Guo, Wenyuan Xu, Zhili Fang, Shaohui Wang, Lingzhi Liu, Yongxin Liu i Jiali Zhang. "Controlling crystal growth of MIL-100(Fe) on Ag nanowire surface for optimizing catalytic performance". RSC Advances 10, nr 42 (2020): 25260–65. http://dx.doi.org/10.1039/d0ra04211k.

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11

Delgado-Marín, José J., Javier Narciso i Enrique V. Ramos-Fernández. "Effect of the Synthesis Conditions of MIL-100(Fe) on Its Catalytic Properties and Stability under Reaction Conditions". Materials 15, nr 18 (19.09.2022): 6499. http://dx.doi.org/10.3390/ma15186499.

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MIL-100(Fe) is a metal–organic framework (MOF) characterized by the presence of Lewis acid and Fe(II/III) redox sites. In this work, different synthesis methods for the preparation of MIL-100(Fe) are studied. Depending on the source of fluorine, different phases can be obtained: MIL-100(Fe) and an Fe trimesate with unknown structure which we call Fe(BTC). These materials were characterized using numerous techniques and applied in the reaction of CO2 cycloaddition with epichlorohydrin, a reaction catalyzed by Lewis acid sites. It was observed that samples with more Fe(BTC) phase were more active in the reaction. However, all samples, under reaction conditions, transformed into a less active phase.

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12

Wang, Dengke, Yujie Song, Jingyu Cai, Ling Wu i Zhaohui Li. "Effective photo-reduction to deposit Pt nanoparticles on MIL-100(Fe) for visible-light-induced hydrogen evolution". New Journal of Chemistry 40, nr 11 (2016): 9170–75. http://dx.doi.org/10.1039/c6nj01989g.

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13

Quintero-Álvarez, Fátima Gisela, Cintia Karina Rojas-Mayorga, Didilia Ileana Mendoza-Castillo, Ismael Alejandro Aguayo-Villarreal i Adrián Bonilla-Petriciolet. "Physicochemical Modeling of the Adsorption of Pharmaceuticals on MIL-100-Fe and MIL-101-Fe MOFs". Adsorption Science & Technology 2022 (8.03.2022): 1–14. http://dx.doi.org/10.1155/2022/4482263.

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The adsorption of naproxen (NAP), diclofenac (DFC), and acetaminophen (APAP) molecules from aqueous solutions using MIL-100-Fe and MIL-101-Fe metal organic frameworks (MOFs) has been analyzed and modeled. Adsorption isotherms of these pharmaceuticals were experimentally quantified at 30 and 40°C and pH 7. Textural parameters and surface chemistry of these MOFs were analyzed, and results were utilized to explain the pharmaceutical adsorption mechanism. Density Functional Theory (DFT) calculations were performed to understand the reactivity of pharmaceutical molecules, and a statistical physics model was employed to calculate the main physicochemical parameters related to the adsorption mechanism. Results showed that the adsorption of these pharmaceuticals on MOFs was multimolecular and exothermic. Both MOFs displayed the highest adsorption capacities, up to 2.19 and 1.71 mmol/g, for NAP and DFC molecules, respectively. MIL-101-Fe showed better pharmaceutical adsorption properties than MIL-100-Fe due to its highest content of Fe-O clusters and mesopore volume. Adsorption mechanism of these organic molecules could involve hydrogen bond, van der Waals forces, and electrostatic interactions with MOF surfaces. In particular, MIL-101-Fe MOF is a promising material to prepare composites with competitive adsorption capacities for facing the water pollution caused by pharmaceutical compounds.

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14

Sturini, Michela, Constantin Puscalau, Giulia Guerra, Federica Maraschi, Giovanna Bruni, Francesco Monteforte, Antonella Profumo i Doretta Capsoni. "Combined Layer-by-Layer/Hydrothermal Synthesis of Fe3O4@MIL-100(Fe) for Ofloxacin Adsorption from Environmental Waters". Nanomaterials 11, nr 12 (2.12.2021): 3275. http://dx.doi.org/10.3390/nano11123275.

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A simple not solvent and time consuming Fe3O4@MIL-100(Fe), synthesized in the presence of a small amount of magnetite (Fe3O4) nanoparticles (27.3 wt%), is here presented and discussed. Layer-by-layer alone (20 shell), and combined layer-by-layer (5 shell)/reflux or /hydrothermal synthetic procedures were compared. The last approach (Fe3O4@MIL-100_H sample) is suitable (i) to obtain rounded-shaped nanoparticles (200–400 nm diameter) of magnetite core and MIL-100(Fe) shell; (ii) to reduce the solvent and time consumption (the layer-by-layer procedure is applied only 5 times); (iii) to give the highest MIL-100(Fe) amount in the composite (72.7 vs. 18.5 wt% in the layer-by-layer alone); (iv) to obtain a high surface area of 3546 m2 g−1. The MIL-100(Fe) sample was also synthesized and both materials were tested for the absorption of Ofloxacin antibiotic (OFL). Langmuir model well describes OFL adsorption on Fe3O4@MIL-100_H, indicating an even higher adsorption capacity (218 ± 7 mg g−1) with respect to MIL-100 (123 ± 5 mg g−1). Chemisorption regulates the kinetic process on both the composite materials. Fe3O4@MIL-100_H performance was then verified for OFL removal at µg per liter in tap and river waters, and compared with MIL-100. Its relevant and higher adsorption efficiency and the magnetic behavior make it an excellent candidate for environmental depollution.

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Dao, Xiao-Yao, Jin-Han Guo, Xiao-Yu Zhang, Shi-Qing Wang, Xiao-Mei Cheng i Wei-Yin Sun. "Structure-dependent iron-based metal–organic frameworks for selective CO2-to-CH4 photocatalytic reduction". Journal of Materials Chemistry A 8, nr 48 (2020): 25850–56. http://dx.doi.org/10.1039/d0ta10278d.

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Chen, Mao-Long, Shu-Yang Zhou, Zhou Xu, Li Ding i Yun-Hui Cheng. "Metal-Organic Frameworks of MIL-100(Fe, Cr) and MIL-101(Cr) for Aromatic Amines Adsorption from Aqueous Solutions". Molecules 24, nr 20 (16.10.2019): 3718. http://dx.doi.org/10.3390/molecules24203718.

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MIL-100(Fe, Cr) and MIL-101(Cr) were synthesized by the hydrothermal method and applied to the adsorptions of five aromatic amines from aqueous solutions. These three metal-organic frameworks (MOFs) were well characterized by powder X-ray diffraction (PXRD), scanning electron microscope (SEM), transmission electron microscope (TEM), thermogravimetric analysis (TGA) and surface area analysis. The adsorption mechanism of three MOFs and the effects of the structures of MOFs on the adsorption of aromatic amines were discussed. The results show that the cavity system and suitable hydrogen bond acceptor were important factors for the adsorption for five aromatic amines of aniline, 1-naphthalamine, o-toluidine, 2-amino-4-nitrotoluene and 2-nitroaniline: (a) the saturated adsorption capacity of aniline, 1-naphthylamine and o-toluidine on MIL-100(Fe) were 52.0, 53.4 and 49.6 mg/g, respectively, which can be attributed to the intermolecular hydrogen bond interaction and cavity system diffusion. (b) The adsorption capacity of 2-nitroaniline and 2-amino-4-nitrotoluene on MIL-101(Cr) were 54.3 and 25.0 mg/g, respectively, which can be attributed to the more suitable pore size of MIL-101(Cr) than that of MIL-100(Fe, Cr). The MOFs of MIL-100(Fe) and MIL-101(Cr) can be potential materials for removing aromatic amines from aqueous solutions.

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Iacomi, Paul, U.-Hwang Lee, Anil H. Valekar, Jong-San Chang i Philip L. Llewellyn. "Investigating the effect of alumina shaping on the sorption properties of promising metal–organic frameworks". RSC Advances 9, nr 13 (2019): 7128–35. http://dx.doi.org/10.1039/c9ra00534j.

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Hamedi, Asma, Francesco Trotta, Mahmood Borhani Zarandi, Marco Zanetti, Fabrizio Caldera, Anastasia Anceschi i Mohammad Reza Nateghi. "In Situ Synthesis of MIL-100(Fe) at the Surface of Fe3O4@AC as Highly Efficient Dye Adsorbing Nanocomposite". International Journal of Molecular Sciences 20, nr 22 (9.11.2019): 5612. http://dx.doi.org/10.3390/ijms20225612.

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A new magnetic nanocomposite called MIL-100(Fe) @Fe3O4@AC was synthesized by the hydrothermal method as a stable adsorbent for the removal of Rhodamine B (RhB) dye from aqueous medium. In this work, in order to increase the carbon uptake capacity, magnetic carbon was first synthesized and then the Fe3O4 was used as the iron (III) supplier to synthesize MIL-100(Fe). The size of these nanocomposite is about 30–50 nm. Compared with activated charcoal (AC) and magnetic activated charcoal (Fe3O4@AC) nanoparticles, the surface area of MIL-100(Fe) @Fe3O4@AC were eminently increased while the magnetic property of this adsorbent was decreased. The surface area of AC, Fe3O4@AC, and MIL-100(Fe) @Fe3O4@AC was 121, 351, and 620 m2/g, respectively. The magnetic and thermal property, chemical structure, and morphology of the MIL-100(Fe) @Fe3O4@AC were considered by vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), zeta potential, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Brunner-Emmet-Teller (BET), and transmission electron microscopy (TEM) analyses. The relatively high adsorption capacity was obtained at about 769.23 mg/g compared to other adsorbents to eliminate RhB dye from the aqueous solution within 40 min. Studies of adsorption kinetics and isotherms showed that RhB adsorption conformed the Langmuir isotherm model and the pseudo second-order kinetic model. Thermodynamic amounts depicted that the RhB adsorption was spontaneous and exothermic process. In addition, the obtained nanocomposite exhibited good reusability after several cycles. All experimental results showed that MIL-100(Fe) @Fe3O4@AC could be a prospective sorbent for the treatment of dye wastewater.

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Shi, Jing, Shengtao Hei, Huanhuan Liu, Yanghe Fu, Fumin Zhang, Yijun Zhong i Weidong Zhu. "Synthesis of MIL-100(Fe) at Low Temperature and Atmospheric Pressure". Journal of Chemistry 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/792827.

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MIL-100(Fe), a mesoporous metal-organic framework (MOF), has a large BET specific surface area and pore volume with the presence of a significant amount of accessible Lewis acid metal sites upon dehydration. The structural characteristics of MIL-100(Fe) make it a good candidate for potential applications in gas storage, separation, and heterogeneous catalysis. Mainly, this MOF is obtained by the hydrothermal synthesis in a Teflon-lined autoclave at high temperature (>150°C) under static conditions. However, this method has several disadvantages such as high temperature, high (autogenous) pressure, long time, and comparable low MOF yield. Therefore, development of a facile method for synthesis of MIL-100(Fe) is vitally important for fundamental understanding and practical application. Herein, MIL-100(Fe) is synthesized by a facile low-temperature (<100°C) synthesis route at atmospheric pressure by reaction of metallic iron and trimesic acid in water. Due to our synthesis is conducted with agitation, higher MOF yield (>90%) still could be achieved, suggesting that this simple and energy saving method has the potential to be used practically.

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Tanimoto, Yutaro, i Shin-ichiro Noro. "Influence of carbohydrate polymer shaping on organic dye adsorption by a metal–organic framework in water". RSC Advances 11, nr 38 (2021): 23707–13. http://dx.doi.org/10.1039/d1ra03348d.

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Zurong, Song, Tao Ali i Feng Xuehua. "Research on the synthesis of chitosan@MIL-100(Fe)". E3S Web of Conferences 245 (2021): 03089. http://dx.doi.org/10.1051/e3sconf/202124503089.

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Objective: Studying new carrier materials to solve the problems of bioavailability and side effects of drugs in the body and choose the suitable carrier to coat the drug. This carrier not only improves the release and absorption of drug molecules in the body, but also significantly improves the bioavailability and reduces the toxic side effects of high concentrated drugs. Therefore, this paper focuses on the research of the synthesis of a new carrier material. Methods:Using ferric nitrate as iron source, first add ferric nitrate, 1,3,5-benzene tricarbonic acid, chitosan solution and deionized water pro rata, then synthesize the product using mechanical stirring, and purify and dry the product. Results:The maximum yield of chitosan is obtained when the concentration of chitosan is 1% using mechanical stirring method, and the yield is 0.6330 g. Conclusion:The results show that the thinner the concentration of chitosan solution is, the better synthesizes the chitosan@MIL-100(Fe) and the higher the yield is. And it reaches the best result when the concentration is 1%.

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Pak, Alexandra M., Elena A. Maiorova, Elizaveta D. Siaglova, Teimur M. Aliev, Elena N. Strukova, Aleksey V. Kireynov, Alexey A. Piryazev i Valentin V. Novikov. "MIL-100(Fe)-Based Composite Films for Food Packaging". Nanomaterials 13, nr 11 (23.05.2023): 1714. http://dx.doi.org/10.3390/nano13111714.

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A biocompatible metal–organic framework MIL-100(Fe) loaded with the active compounds of tea tree essential oil was used to produce composite films based on κ-carrageenan and hydroxypropyl methylcellulose with the uniform distribution of the particles of this filler. The composite films featured great UV-blocking properties, good water vapor permeability, and modest antibacterial activity against both Gram-negative and Gram-positive bacteria. The use of metal–organic frameworks as containers of hydrophobic molecules of natural active compounds makes the composites made from naturally occurring hydrocolloids attractive materials for active packaging of food products.

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Yang, Jia, Xiaojun Niu, Shaorong An, Weiyi Chen, Jie Wang i Wei Liu. "Facile synthesis of Bi2MoO6–MIL-100(Fe) metal–organic framework composites with enhanced photocatalytic performance". RSC Advances 7, nr 5 (2017): 2943–52. http://dx.doi.org/10.1039/c6ra26110h.

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A novel Bi₂MoO₆–MIL-100(Fe) photocatalyst was synthesized by a facile solvothermal method for the first time, and characterized by XRD, SEM, XPS, UV-vis, TEM, and PL. The Bi₂MoO₆–MIL-100(Fe) exhibited excellent photocatalytic activity and stability.

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Bezverkhyy, Igor, Guy Weber i Jean-Pierre Bellat. "Degradation of fluoride-free MIL-100(Fe) and MIL-53(Fe) in water: Effect of temperature and pH". Microporous and Mesoporous Materials 219 (styczeń 2016): 117–24. http://dx.doi.org/10.1016/j.micromeso.2015.07.037.

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Tran, Thien Vinh, i Dien Huu Huynh. "A study on the synthesis of MIL-100(Fe) and its application in the catalytic degradation of methylene blue". Science and Technology Development Journal - Natural Sciences 1, T5 (29.11.2018): 149–57. http://dx.doi.org/10.32508/stdjns.v1it5.548.

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In the present paper, a study on the synthesis of MIL-100(Fe) by hydrothermal process and its application in the catalytic degradation of methylene blue (MB) was demonstrated. The obtained samples were characterized by X-ray Diffraction (XRD), scaning electron microscope (SEM), Fourier-transform infrared spectroscopy (FT-IR), Brunauer, Emmett and Teller (BET) and energy-dispersive X-ray spectroscopy (EDX). The results showed that the synthesized MIL- 100(Fe) exhibited high crystallinity and surface area. Its catalytic activity was evaluated by measuring the rate of conversion of MB after oxidation reaction by H2O2. The results indicated that the MIL-100(Fe) showsed high catalytic activity for the oxidation reaction of MB and at pH = 10, MB was degraded almost completely after after 3 hours of presence of the catalyst.

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Jakhar, Sonu, Nirankar Singh i Samarjeet Singh Siwal. "In‐situ synthesis of reduced graphene oxide templated MIL‐53(Fe) nanorods for photo‐catalytic degradation of organic dyes under sunlight". Vietnam Journal of Chemistry 61, nr 5 (25.07.2023): 646–54. http://dx.doi.org/10.1002/vjch.202300126.

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AbstractDue to outstanding chemical and physical characteristics, metal‐organic‐frameworks (MOFs) are frequently apprenticed for environmental clean‐up. Within this article, we present a thorough and straightforward hydrothermal method towards the production of reduced graphene oxide templated MIL‐53(Fe) hybrids RGO@MIL‐53(Fe). The structural characteristics of created hybrids were identified by using BET, FESEM, powder X‐ray diffraction, and FTIR techniques. Methylene blue (MB) dye (a model water pollutant) was used to evaluate H2O2‐assisted photo‐catalytic efficiency of RGO@MIL‐53(Fe). In contrast to pristine MIL‐53(Fe)‐H2O2, the RGO@MIL‐53(Fe)‐H2O2 system demonstrated improved photodegradation efficiency (>99%) for the elimination of MB over 60 minutes of solar irradiation. Furthermore, another dye rhodamine B (RhB) was almost 100% degraded in similar conditions within 80 minutes of sunlight. The RGO@MIL‐53(Fe) hetero‐structure, which promotes quick electron transport and reduces the rate at which photo‐induced charge carriers recombine, is credited as the main cause of the improvement in photo‐catalytic efficiency.

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Hei, Shengtao, Yan Jin i Fumin Zhang. "Fabrication ofγ-Fe2O3Nanoparticles by Solid-State Thermolysis of a Metal-Organic Framework, MIL-100(Fe), for Heavy Metal Ions Removal". Journal of Chemistry 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/546956.

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Porousγ-Fe2O3nanoparticles were prepared via a solid-state conversion process of a mesoporous iron(III) carboxylate crystal, MIL-100(Fe). First, the MIL-100(Fe) crystal that served as the template of the metal oxide was synthesized by a low-temperature (<100°C) synthesis route. Subsequently, the porousγ-Fe2O3nanoparticles were fabricated by facile thermolysis of the MIL-100(Fe) powders via a two-step calcination treatment. The obtainedγ-Fe2O3was characterized by X-ray diffraction (XRD), N2adsorption, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) techniques, and then used as an adsorbent for heavy metal ions removal in water treatment. This study illustrates that the metal-organic frameworks may be suitable precursors for the fabrication of metal oxides nanomaterials with large specific surface area, and the prepared porousγ-Fe2O3exhibits a superior adsorption performance for As(V) and As(III) ions removal in water treatment.

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Xie i Huang. "Enzymatic Production of Biodiesel Using Immobilized Lipase on Core-Shell Structured Fe3O4@MIL-100(Fe) Composites". Catalysts 9, nr 10 (12.10.2019): 850. http://dx.doi.org/10.3390/catal9100850.

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In this research, core–shell structured Fe3O4@MIL-100(Fe) composites were prepared by coating Fe3O4 magnetite with porous MIL-100(Fe) metal-organic framework (MOF) material, which were then utilized as magnetic supports for the covalent immobilization of the lipase from Candida rugosa through amide linkages. By using the carbodiimide/hydroxysulfosuccinimide (EDC/NHS) activation strategy, the lipase immobilization efficiency could reach 83.1%, with an activity recovery of 63.5%. The magnetic Fe3O4@MIL-100(Fe) composite and immobilized lipase were characterized by several techniques. The characterization results showed that the Fe3O4 core was coated with MIL-100(Fe) shell with the formation of perfect core–shell structured composites, and moreover, the lipase was covalently tethered on the magnetic carrier. The immobilized lipase displayed a strong magnetic response and could be facilely separated by an external magnetic field. With this magnetic biocatalyst, the maximum biodiesel conversion attained 92.3% at a methanol/oil molar ratio of 4:1, with a three-step methanol addition manner, and a reaction temperature of 40 °C. Moreover, the biocatalyst prepared in the present study was recycled easily by magnetic separation without significant mass loss, and displayed 83.6% of its initial activity as it was reused for five runs, thus allowing its potential application for the cleaner production of biodiesel.

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Xie, Xinyu, Joy Thomas, Chang-Tang Chang i Hong Tao. "Influence of Alkalinization Over Metal Organic Frameworks MIL-100(Fe) for Enhanced Volatile Organic Compounds (VOCs) Adsorbents". Journal of Nanoscience and Nanotechnology 21, nr 11 (1.11.2021): 5510–21. http://dx.doi.org/10.1166/jnn.2021.19474.

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Substantial attempts have been undertaken for the improvement of the air quality over decades; and Volatile Organic Compounds (VOCs) from the chemical and textile industries are truly listed as severe issue to be controlled. To come up with modus operandi for this issue, a novel composite of metal organic frameworks (MOFs) MIL-100(Fe) with salient tuned features of natrite was designed by a green and facile method. Mineralized composite MOFs exhibited enhanced crystallinity than pure MIL-100(Fe) as well showcased a higher surface area of 1300 m2 g−1. Through dynamic acetone pressure swing adsorption setup, MIL-0.05Na (MIL-100(Fe) synthesized with 0.05 mM Na2CO3 solution) revealed an enhanced acetone adsorption of 210 mg g 1 at room temperature. Gas phase adsorption isotherms confirmed the mono layer adsorption behavior. The kinetics models evaluated that the external mass transfer was the rate limiting step for surface adsorption. The thermodynamic study manifested that the adsorption reaction was spontaneous and exothermic. The proposed mechanism of adsorption was the act of physisorption which enriched the adsorbents reusability. This research work provides a futuristic vista to design mineralized Fe-MOFs composites for an energy saving adsorbents for VOCs removal.

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Wang, Tao, Xiqing Liu, Mei Liu, Runhua Liao, Hongquan Zhan, Xiaoxue Qi, Yongqing Wang i Yanju Huang. "The enhanced photocatalytic activity of TiO₂(B)/MIL-100(Fe) composite via Fe–O clusters". New Journal of Chemistry 46, nr 2 (2022): 739–46. http://dx.doi.org/10.1039/d1nj04569e.

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Cheng, Ruolin, Elke Debroye, Johan Hofkens i Maarten B. J. Roeffaers. "Efficient Photocatalytic CO2 Reduction with MIL-100(Fe)-CsPbBr3 Composites". Catalysts 10, nr 11 (20.11.2020): 1352. http://dx.doi.org/10.3390/catal10111352.

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Bromide-based metal halide perovskites (MHPs) are promising photocatalysts with strong blue-green light absorption. Composite photocatalysts of MHPs with MIL-100(Fe), as a powerful photocatalyst itself, have been investigated to extend the responsiveness towards red light. The composites, with a high specific surface area, display an enhanced solar light response, and the improved charge carrier separation in the heterojunctions is employed to maximize the photocatalytic performance. Optimization of the relative composition, with the formation of a dual-phase CsPbBr3 to CsPb2Br5 perovskite composite, shows an excellent photocatalytic performance with 20.4 μmol CO produced per gram of photocatalyst during one hour of visible light irradiation.

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Lee, Jong-Gun, Bhavana N. Joshi, Edmund Samuel, Seongpil An, Mark T. Swihart, Ji Sun Lee, Young Kyu Hwang, Jong-San Chang i Sam S. Yoon. "Supersonically sprayed gas- and water-sensing MIL-100(Fe) films". Journal of Alloys and Compounds 722 (październik 2017): 996–1001. http://dx.doi.org/10.1016/j.jallcom.2017.06.190.

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Yang, Cheng-Xiong, Chang Liu, Yi-Meng Cao i Xiu-Ping Yan. "Metal–organic framework MIL-100(Fe) for artificial kidney application". RSC Adv. 4, nr 77 (22.08.2014): 40824–27. http://dx.doi.org/10.1039/c4ra05111d.

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Huynh, Tuan-Anh, Nghi Nguyen Huu, Duyen Pham Thi Hong i Du Pham Dinh. "Synthesis and evaluation of catalytic activities in rhodamine B degraded reaction by H2O2 of MIL-53(Al) dopping with iron". Vietnam Journal of Catalysis and Adsorption 11, nr 2 (27.07.2022): 34–41. http://dx.doi.org/10.51316/jca.2022.026.

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In the present study, MIL-53(Al) metal-organic framework material dopping with iron (denoted as Fe-MIL-53(Al)) had been synthesized and applied as a catalyst to degrade rhodamine B (RB) in aqueous solution by H2O2. The obtained materials were characterized using X-ray diffraction (XRD), thermogravimetry analysis (TG), transmission electron microscopy (TEM), and energy dispersive X-ray (EDX). The influence of iron content on the structure of MIL-53(Al) and treated temperature of Fe-MIL-53(Al) were investigated. The results showed that the obtained Fe-MIL-53(Al), which was synthesized at mole ratio of Fe/Al = 1/9, had high catalytic activity for RB oxidation reaction by H2O2, RB degradation efficiency was 92%, and achieved 100% under UV radiation ([RB] = 10 mg/L). The treatment at 280 ºC had almost no effect on the structure of the material, but also slightly enhanced the catalytic activity.

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Xu, Bo, Xuejiao Li, Zhiming Chen, Tao Zhang i Cuncheng Li. "Pd@MIL-100(Fe) composite nanoparticles as efficient catalyst for reduction of 2/3/4-nitrophenol: Synergistic effect between Pd and MIL-100(Fe)". Microporous and Mesoporous Materials 255 (styczeń 2018): 1–6. http://dx.doi.org/10.1016/j.micromeso.2017.07.008.

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Lestari, Witri Wahyu, Joni Hartono, Marisa Adreane, Khoirina Dwi Nugrahaningtyas, Candra Purnawan i Sentot Budi Rahardjo. "Electro-Synthetic Optimization of Host Material Based on MIL-100(Fe)". Molekul 11, nr 1 (16.05.2016): 61. http://dx.doi.org/10.20884/1.jm.2016.11.1.195.

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Electro-synthesis of Metal-Organic Frameworks types of MIL-100(Fe) (MIL = Material Institute of Lavoisier) in ethanol: water (1: 1) with electrolyte TBATFB 0.1 M has been optimized by varying voltage (12, 13, 14 and 15 Volt) and temperature (room temperature, 40, 60 and 80 °C). The product showed light brown powder which upon activation becomes dark brown. Optimum condition achieved during use voltage of 15 Volts and at a temperature of 40 °C with 33% yield. The obtained material was characterized by XRD and compared to CCDC 640536 simulated patterns to confirm the phase purity of the product. As comparison hydrothermal and reflux method have been carried out. Characterization by FTIR has also undertaken to ensure the coordination between the metal cation (Fe3+) and the BTC ligand (BTC = 1,3,5-Benzene Tri Carboxylate). Meanwhile pore analysis using SAA confirmed that MIL-100(Fe) obtained by electrolysis method has a BET surface area reached till 569.191 m²/g with a total pore volume of 0.4540 cc/g and an average pore diameter reached 16 Å. Based on SEM analysis, morphology material show particle size between 0.4-8.6 μm and has a thermal stability up to 350 °C according thermo-gravimetric analysis. Due to the presence of Lewis acid sites on Fe-trimeric unit, porosity features on MIL-100(Fe) and a fairly high thermal stability, this material is potentially used as the host material for the catalyst in the conversion reactions model for green diesel production.

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Chen, Mao-Long, Tian-Hui Lu, Ling-Li Long, Zhou Xu, Li Ding i Yun-Hui Cheng. "NH2-Fe-MILs for effective adsorption and Fenton-like degradation of imidacloprid: Removal performance and mechanism investigation". Environmental Engineering Research 27, nr 2 (19.03.2021): 200702–0. http://dx.doi.org/10.4491/eer.2020.702.

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This investigation enables amino-functionalized metal–organic frameworks (MOFs) materials for the removal of imidacloprid (IMC). Two Fe-based MOF materials of NH2-MIL-88B(Fe) and NH2-MIL-101(Fe) both exhibited high adsorption capacity and Fenton-like degradation ability for IMC which were utilized to remove IMC from aqueous solution. Although the adsorption capacity of NH2-MIL-101(Fe) was higher than that of NH2-MIL-88(Fe), the degradation abilities of both MOF materials were similar. The removal efficiencies were evaluated through several basic studies, including concentrations of catalyst (0.12–0.3 g/L) and IMC (20–100 mg/L), pH of solution (3–11), and amounts of 30% H2O2 (0–2.0 μL/mL). By optimizing the above factors, the total removal ratio of IMC by NH2-MIL-88B(Fe) was as high as 93%, whereas the removal ratio of NH2-MIL-101(Fe) was 97%. Moreover, these MOF materials were proven to be stable and recyclable. The free radical quenching experiment and density functional theory calculation were applied to research the removal mechanism, and the hydroxyl radicals (·OH) was found to be the key active intermediate. The high catalytic efficiency can be attributed to the synergy of the Fe3+/Fe2+ redox cycle.

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Le, Bac Thanh, Phuong Hoai Thi Nguyen, Duong Duc La, Phuong Thi Nguyen i Le Cam Thi Tran. "Study on Chloroquine phosphate loading capacity of MIL-100(Fe) synthesized by sonochemical method". Vietnam Journal of Catalysis and Adsorption 12, nr 3 (24.10.2023): 37–44. http://dx.doi.org/10.51316/jca.2023.045.

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Iron-based metal-organic framework (MIL-100(Fe)) was successfully synthesized by sonochemical method at the frequency of 20.5kHz, power of 1080 W in 10 minutes. Several physical measurements were conducted to characterize the MIL-100(Fe) including XRD, FT-IR, Raman, BET, and SEM methods. The analysis results show that the material has characteristic diffraction peaks at 11o, 19o, 24o, and 28o, the specific surface area of the material reaches 1080 m2/g according to BET, and the particle size from 200-400 nm according to SEM. The chloroquine phosphate loading capacity of MIL-100(Fe) was evaluated according to different adsorption kinetic and isothermal models. The results show that the chloroquine phosphate loading process by material consists of two stages: surface adsorption and intra-particle diffusion. The maximum chloroquine phosphate adsorption capacity of the material reached 236 (mg/g) according to the Langmuir model.

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Nasrollahpour, Atefe, i Seyyed Ershad Moradi. "A Simple Vortex-Assisted Magnetic Dispersive Solid Phase Microextraction System for Preconcentration and Separation of Triazine Herbicides from Environmental Water and Vegetable Samples Using Fe3O4@MIL-100(Fe) Sorbent". Journal of AOAC INTERNATIONAL 101, nr 5 (1.09.2018): 1639–46. http://dx.doi.org/10.5740/jaoacint.17-0374.

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Abstract A vortex-assisted magnetic dispersive solid phase microextraction coupled with high-performance liquid chromatography has been developed for the extraction and determination of triazine herbicides by using magnetic metal organic frameworks [Fe3O4@MIL-100(Fe)] in environmental water and vegetable samples. The Fe3O4@MIL-100(Fe) composite has been characterized by using X-ray diffraction spectroscopy, tunneling electron microscopy, thermogravimetric measurement, and Brunauer-Emmett-Teller analysis. The method is based on the sorption of triazine herbicides on Fe3O4@MIL-100(Fe) because of the complex formation between iron oxide nanoparticles and triazine herbicides beside π-π interactions between organic parts of Fe3O4@MIL-100(Fe) and triazine herbicides. The experimental parameters for the preconcentration of triazine herbicides, such as the type and volume of the eluent, pH, time of the sorption and desorption, and the amount of the sorbent, were optimized. Under the optimized conditions, the method was linear over the concentration range of 0.0061 to 70 ng/mL for each triazine herbicide, and the correlation coefficients ranged from 0.9988 to 0.9997. The limit of detection of the method at a signal-to-noise ratio of 3 was 2.0 to 5.3 ng/mL. The relative standard deviations for inter- and intraday assays were in the range of 5.8 to 10.2% and 3.8 to 6.3%, respectively.

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He, Xinying, Yunqiu Yu i Yan Li. "Facile synthesis of boronic acid-functionalized magnetic metal–organic frameworks for selective extraction and quantification of catecholamines in rat plasma". RSC Advances 8, nr 73 (2018): 41976–85. http://dx.doi.org/10.1039/c8ra07356b.

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MG@MIL-100-B takes magnetic Fe₃O₄microparticles as core and coated by MIL-100-B shows great potential as a SPE absorbent material for the analysis of catecholamines, due to its rapid magnetic separation, outstanding sensitivity and selectivity.

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Jiang, Yuning, Yanzheng Cai, Sen Hu, Xiaoyu Guo, Ye Ying, Ying Wen, Yiping Wu i Haifeng Yang. "Construction of Au@Metal-organic framework for sensitive determination of creatinine in urine". Journal of Innovative Optical Health Sciences 14, nr 04 (6.05.2021): 2141003. http://dx.doi.org/10.1142/s1793545821410030.

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Creatinine level in urine is an important biomarker for renal function diseases, such as renal failure, glomerulonephritis, and chronic nephritis. The Au@MIL-101(Fe) was prepared by in situ growth of Au nanoparticles in MIL-101(Fe) as a selective SERS substrate. The Au@MIL-101(Fe) offers the great local surface plasmon resonance (SPR) effect due to gold nanoparticles aggregation inside metal-organic frameworks. The framework structure could enrich trace target samples and drag them into SPR hot spots. The optimal Au@MIL-101(Fe) composite substrate is used for analyzing creatinine in urine and the limit of detection is down to 0.1[Formula: see text][Formula: see text]mol/L and a linear relationship is ranging from 1[Formula: see text][Formula: see text]mol/L to 100[Formula: see text][Formula: see text]mol/L.

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Valekar, Anil H., Kyung-Ho Cho, U.-Hwang Lee, Ji Sun Lee, Ji Woong Yoon, Young Kyu Hwang, Seung Gwan Lee, Sung June Cho i Jong-San Chang. "Shaping of porous metal–organic framework granules using mesoporous ρ-alumina as a binder". RSC Advances 7, nr 88 (2017): 55767–77. http://dx.doi.org/10.1039/c7ra11764g.

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Taherzade, Seyed Dariush, Mehrnaz Abbasichaleshtori i Janet Soleimannejad. "Efficient and ecofriendly cellulose-supported MIL-100(Fe) for wastewater treatment". RSC Advances 12, nr 15 (2022): 9023–35. http://dx.doi.org/10.1039/d1ra08949h.

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Rojas, Sara, Francisco J. Carmona, Carmen R. Maldonado, Elisa Barea i Jorge A. R. Navarro. "RAPTA-C incorporation and controlled delivery from MIL-100(Fe) nanoparticles". New Journal of Chemistry 40, nr 7 (2016): 5690–94. http://dx.doi.org/10.1039/c5nj02741a.

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Kim, Dong-Woo, Hyeon-Gook Kim i Deug-Hee Cho. "Catalytic performance of MIL-100 (Fe, Cr) and MIL-101 (Fe, Cr) in the isomerization of endo- to exo-dicyclopentadiene". Catalysis Communications 73 (styczeń 2016): 69–73. http://dx.doi.org/10.1016/j.catcom.2015.10.006.

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Chen, Xi, Yanshuang Zhang, Yihu Zhao, Shan Wang, Lingzhi Liu, Wenyuan Xu, Zanru Guo, Shaohui Wang, Yongxin Liu i Jiali Zhang. "Encapsulating Pt Nanoparticles through Transforming Fe3O4 into MIL-100(Fe) for Well-Defined Fe3O4@Pt@MIL-100(Fe) Core–Shell Heterostructures with Promoting Catalytic Activity". Inorganic Chemistry 58, nr 18 (6.09.2019): 12433–40. http://dx.doi.org/10.1021/acs.inorgchem.9b02114.

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He, Wenjuan, Zuopeng Li, Shengchen Lv, Mingxin Niu, Wenfeng Zhou, Jing Li, Runhua Lu, Haixiang Gao, Canping Pan i Sanbing Zhang. "Facile synthesis of Fe3O4@MIL-100(Fe) towards enhancing photo-Fenton like degradation of levofloxacin via a synergistic effect between Fe3O4 and MIL-100(Fe)". Chemical Engineering Journal 409 (kwiecień 2021): 128274. http://dx.doi.org/10.1016/j.cej.2020.128274.

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Huang, Shan, Kai-Li Yang, Xiao-Fang Liu, Hu Pan, Heng Zhang i Song Yang. "MIL-100(Fe)-catalyzed efficient conversion of hexoses to lactic acid". RSC Advances 7, nr 10 (2017): 5621–27. http://dx.doi.org/10.1039/c6ra26469g.

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Hindocha, S., i S. Poulston. "Study of the scale-up, formulation, ageing and ammonia adsorption capacity of MIL-100(Fe), Cu-BTC and CPO-27(Ni) for use in respiratory protection filters". Faraday Discussions 201 (2017): 113–25. http://dx.doi.org/10.1039/c7fd00090a.

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The metal–organic frameworks (MOFs) MIL-100(Fe), Cu-BTC and CPO-27(Ni) were synthesised in 1 kg batches. The materials were then formed in two different industrially relevant ways. Firstly, dry granulation was used to produce pellets which were sieved to give material with a 300–1000 μm size, and the fines were subsequently recycled to mimic a large scale industrial process. Secondly, wet granulation with a polymer was used to produce granules which were again sieved to 300–1000 μm. XRD data shows that the structures of MIL-100(Fe) and CPO-27(Ni) remain intact during both forming processes, whilst Cu-BTC is shown to degrade during processing. This is in line with the ammonia adsorption data obtained for the formed materials which evaluated the ammonia adsorption capacity of the materials using breakthrough measurements. MIL-100(Fe) and CPO-27(Ni) are shown to have capacities of 47 mg g⁻¹ and 62 mg g⁻¹ respectively whilst Cu-BTC has a decreased capacity of 37 mg g⁻¹ from 97 mg g⁻¹ upon forming. The formed materials were also aged at 25 °C and 80% humidity for a week and the ammonia adsorption capacity re-evaluated. As expected, Cu-BTC decomposed under these conditions, whilst MIL-100(Fe) and CPO-27(Ni) show slightly decreased ammonia adsorption capacities of 36 mg g⁻¹ and 60 mg g⁻¹ respectively.

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Christodoulou, Ioanna, Pengbo Lyu, Carla Vieira Soares, Gilles Patriarche, Christian Serre, Guillaume Maurin i Ruxandra Gref. "Nanoscale Iron-Based Metal–Organic Frameworks: Incorporation of Functionalized Drugs and Degradation in Biological Media". International Journal of Molecular Sciences 24, nr 4 (8.02.2023): 3362. http://dx.doi.org/10.3390/ijms24043362.

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Metal–organic frameworks (MOFs) attract growing interest in biomedical applications. Among thousands of MOF structures, the mesoporous iron(III) carboxylate MIL-100(Fe) (MIL stands for the Materials of Lavoisier Institute) is among the most studied MOF nanocarrier, owing to its high porosity, biodegradability, and lack of toxicity. Nanosized MIL-100(Fe) particles (nanoMOFs) readily coordinate with drugs leading to unprecedented payloads and controlled release. Here, we show how the functional groups of the challenging anticancer drug prednisolone influence their interactions with the nanoMOFs and their release in various media. Molecular modeling enabled predicting the strength of interactions between prednisolone-bearing or not phosphate or sulfate moieties (PP and PS, respectively) and the oxo-trimer of MIL-100(Fe) as well as understanding the pore filling of MIL-100(Fe). Noticeably, PP showed the strongest interactions (drug loading up to 30 wt %, encapsulation efficiency > 98%) and slowed down the nanoMOFs’ degradation in simulated body fluid. This drug was shown to bind to the iron Lewis acid sites and was not displaced by other ions in the suspension media. On the contrary, PS was entrapped with lower efficiencies and was easily displaced by phosphates in the release media. Noticeably, the nanoMOFs maintained their size and faceted structures after drug loading and even after degradation in blood or serum after losing almost the totality of the constitutive trimesate ligands. Scanning electron microscopy with high annular dark field (STEM-HAADF) in conjunction with X-Ray energy-dispersive spectrometry (XEDS) was a powerful tool enabling the unraveling of the main elements to gain insights on the MOF structural evolution after drug loading and/or upon degradation.

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