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Lebrón JA, Ostos FJ, Martínez-Santa M, García-Moscoso F, López-López M, Moyá ML, Bernal E, Bachiller S, González-Ulloa G, Rodríguez-Lucena D, Lopes-Costa T, Fernández-Torres R, Ruiz-Mateos E, Pedrosa JM, Rafii-El-Idrissi Benhnia M, López-Cornejo P. Biocompatible metal-organic frameworks as promising platforms to eradicate HIV reservoirs ex vivo in people living with HIV. J Mater Chem B 2024; 12:5220-5237. [PMID: 38695162 DOI: 10.1039/d4tb00272e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The HIV attacks the immune system provoking an infection that is considered a global health challenge. Despite antiretroviral treatments being effective in reducing the plasma viral load in the blood to undetectable levels in people living with HIV (PLWH), the disease is not cured and has become chronic. This happens because of the existence of anatomical and cellular viral reservoirs, mainly located in the lymph nodes and gastrointestinal tract, which are composed of infected CD4+ T cells with a resting memory phenotype and inaccessible to antiretroviral therapy. Herein, a new therapeutic strategy based on nanotechnology is presented. Different combinations of antiretroviral drugs (bictegravir/tenofovir/emtricitabine and nevirapine/tenofovir/emtricitabine) and toll-like receptor agonists were encapsulated into metal-organic frameworks (MOFs) PCN-224 and ZIF-8. The encapsulation efficiencies of all the drugs, as well as their release rate from the carriers, were measured. In vitro studies about the cell viability, the hemocompatibility, and the platelet aggregation of the MOFs were carried out. Epifluorescence microscopy assays confirmed the ability of ZIF-8 to target a carboxyfluorescein probe inside HeLa cell lines and PBMCs. These results pave the way for the use of these structures to eliminate latent HIV reservoirs from anatomical compartments through the activation of innate immune cells, and a higher efficacy of the triplet combinations of antiretroviral drugs.
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Affiliation(s)
- José A Lebrón
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Prof. García González 1, 41012 Seville, Spain.
| | - Francisco J Ostos
- Department of Medical Biochemistry, Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain
- Institute of Biomedicine of Seville, IBiS/Virgen del Rocío University Hospital/CSIC/University of Seville, Clinical Unit of Infectious Diseases, Microbiology and Parasitology, 41013 Seville, Spain
| | - Marta Martínez-Santa
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Prof. García González 1, 41012 Seville, Spain.
| | - Francisco García-Moscoso
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Ctra. Utrera Km. 1, 41013, Seville, Spain
| | - Manuel López-López
- Department of Chemical Engineering, Physical Chemistry and Materials Science, Campus 'El Carmen', Faculty of Experimental Sciences, University of Huelva, 21071, Huelva, Spain
| | - María L Moyá
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Prof. García González 1, 41012 Seville, Spain.
| | - Eva Bernal
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Prof. García González 1, 41012 Seville, Spain.
| | - Sara Bachiller
- Department of Medical Biochemistry, Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain
- Institute of Biomedicine of Seville, IBiS/Virgen del Rocío University Hospital/CSIC/University of Seville, Clinical Unit of Infectious Diseases, Microbiology and Parasitology, 41013 Seville, Spain
| | - Gabriel González-Ulloa
- Department of Medical Biochemistry, Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain
- Institute of Biomedicine of Seville, IBiS/Virgen del Rocío University Hospital/CSIC/University of Seville, Clinical Unit of Infectious Diseases, Microbiology and Parasitology, 41013 Seville, Spain
| | - David Rodríguez-Lucena
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Ctra. Utrera Km. 1, 41013, Seville, Spain
| | - Tania Lopes-Costa
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Ctra. Utrera Km. 1, 41013, Seville, Spain
| | - Rut Fernández-Torres
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Prof. García González, 1, 41012, Seville, Spain
| | - Ezequiel Ruiz-Mateos
- Institute of Biomedicine of Seville, IBiS/Virgen del Rocío University Hospital/CSIC/University of Seville, Clinical Unit of Infectious Diseases, Microbiology and Parasitology, 41013 Seville, Spain
| | - José M Pedrosa
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Ctra. Utrera Km. 1, 41013, Seville, Spain
| | - Mohammed Rafii-El-Idrissi Benhnia
- Department of Medical Biochemistry, Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain
- Institute of Biomedicine of Seville, IBiS/Virgen del Rocío University Hospital/CSIC/University of Seville, Clinical Unit of Infectious Diseases, Microbiology and Parasitology, 41013 Seville, Spain
| | - Pilar López-Cornejo
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, C/Prof. García González 1, 41012 Seville, Spain.
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Sun M, Wang L, Zhuo Y, Xu S, Liu H, Jiang X, Lu Z, Wang X, Wang Y, Yue G, Feng B, Rao H, Wu D. Multi-Enzyme Activity of MIL-101 (Fe)-Derived Cascade Nano-Enzymes for Antitumor and Antimicrobial Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309593. [PMID: 38126566 DOI: 10.1002/smll.202309593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/14/2023] [Indexed: 12/23/2023]
Abstract
The clinical application of oncology therapy is hampered by high glutathione concentrations, hypoxia, and inefficient activation of cell death mechanisms in cancer cells. In this study, Fe and Mo bimetallic sulfide nanomaterial (FeS2@MoS2) based on metal-organic framework structure is rationally prepared with peroxidase (POD)-, catalase (CAT)-, superoxide dismutase (SOD)-like activities and glutathione depletion ability, which can confer versatility for treating tumors and mending wounds. In the lesion area, FeS2@MoS2 with SOD-like activity can facilitate the transformation of superoxide anions (O2 -) to hydrogen peroxide (H2O2), and then the resulting H2O2 serves as a substrate for the Fenton reaction with FMS to produce highly toxic hydroxyl radicals (∙OH). Simultaneously, FeS2@MoS2 has an ability to deplete glutathione (GSH) and catalyze the decomposition of nicotinamide adenine dinucleotide phosphate (NADPH) to curb the regeneration of GSH from the source. Thus it can realize effective tumor elimination through synergistic apoptosis-ferroptosis strategy. Based on the alteration of the H2O2 system, free radical production, glutathione depletion and the alleviation of hypoxia in the tumor microenvironment, FeS2@MoS2 NPS can not only significantly inhibit tumors in vivo and in vitro, but also inhibit multidrug-resistant bacteria and hasten wound healing. It may open the door to the development of cascade nanoplatforms for effective tumor treatment and overcoming wound infection.
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Affiliation(s)
- Mengmeng Sun
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Liling Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Yong Zhuo
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, P. R. China
| | - Shengyu Xu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, P. R. China
| | - Hehe Liu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, P. R. China
| | - Xuemei Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, P. R. China
| | - Zhiwei Lu
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Xianxiang Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Yanying Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Guizhou Yue
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - Bin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, P. R. China
| | - Hanbing Rao
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, P. R. China
| | - De Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, P. R. China
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Le T, Esfahani MR. Superfast adsorption of small and uncharged urea from water using post-sonicated iron-based metal-organic framework. CHEMOSPHERE 2024; 347:140566. [PMID: 37939927 DOI: 10.1016/j.chemosphere.2023.140566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/10/2023]
Abstract
Urea is widely used in fertilizer production for agricultural purposes which risks runoff into soil and water sources. An excess of urea can result in algal or toxic blooms which can poison wildlife or even humans by accumulation in food sources. The removal of urea from water is challenging due to the small size (0.254 nm) and uncharged surface of urea. Intensive research has been conducted on a variety of methods to remove environmental concentrations of urea using adsorbents, but most of them lack effective removal, require long (>2 h) process time, and lack re-generability. Metal-organic frameworks (MOFs) are the new generation of adsorbents with excellent structural and functional group tunability. In this study, we synthesized MIL-100 (Fe), an iron-based MOF, as an efficient adsorbent for the removal of uncharged urea from water. The urea adsorption capacity of MIL-100 (Fe) was tested under varying experimental conditions such as pH (2-10), temperature (25-65 °C), MOF concentration (25-400 ppm), and urea concentration (25-1000 ppm). The results showed the superfast adsorption (more than 85% removal within 2 min) of neutrally charged urea molecules on MIL-100 (Fe). The MOF was able to reach a maximum adsorption efficiency of around 85% with a maximum uptake capacity of 3321 mg/g. The MIL-100 (Fe) showed acceptable re-generability by retaining up to 90% removal efficiency after four regeneration cycles. The urea adsorption followed pseudo 2nd-order adsorption kinetics and dipole-dipole interactions and π-NH bonding were the primary adsorption mechanism.
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Affiliation(s)
- Tin Le
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL 35487, United States
| | - Milad R Esfahani
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL 35487, United States.
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Lee H, Kim DI, Kim Y, Jang A. Efficient one-pot synthesis of magnetic MIL-100(Fe) using nitric acid without additional Fe ion addition and adsorption behavior of charged organic compounds. CHEMOSPHERE 2023; 314:137696. [PMID: 36586448 DOI: 10.1016/j.chemosphere.2022.137696] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
Metal organic frameworks (MOFs) are attracting attention as high-performance adsorbents because of their high specific surface area and porosity. In particular, magnetic MIL-100(Fe) has the both characteristics of Fe3O4 and MIL-100(Fe), which are magnetic characteristics, high specific surface area and open metal sites. However, multiple synthetic steps are required for synthesis of magnetic MOF, and there is limitation that the residual organic linker and unreacted Fe center ions can be discharged, and they cause water pollution. In this study, magnetic MIL-100(Fe) was synthesized within 4 h without the addition of Fe ions by using nitric acid for the surface modification of Fe3O4. Magnetic MIL-100(Fe) was confirmed through XRD, FTIR, and TEM surface analysis, and the optimal conditions for nitric acid addition were selected through magnetization measurements and BET analysis of synthesized magnetic MIL-100(Fe). Thereafter, adsorption evaluation was performed using MB and MO, which are representative cationic and anionic dyes, respectively. The pseudo-second-order Langmuir model showed a relatively high correlation compared to the other models. This shows that the adsorption mechanism depends on both the amount of adsorbent and adsorbate, and Fe3O4 modification with nitric acid does not cause any change in the adsorption mechanism. In the case of adsorption selectivity between the MB and MO, removal rates of 93.27% and 58.73% were obtained, respectively. The above results can contribute to the simplification of the manufacturing of magnetic metal organic frameworks for removing ionic organic compounds and the minimization of water pollution in the manufacturing process.
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Affiliation(s)
- Hyeonho Lee
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea.
| | - David Inhyuk Kim
- EHS Research Center, Samsung Electronics Co., Ltd., Samsungjeonja-ro 1, Hwasung-si, Gyeonggi-do, 18448, Republic of Korea.
| | - Youjin Kim
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea.
| | - Am Jang
- Department of Global Smart City, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea
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State of Art and Perspectives in Catalytic Ozonation for Removal of Organic Pollutants in Water: Influence of Process and Operational Parameters. Catalysts 2023. [DOI: 10.3390/catal13020324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The number of organic pollutants detected in water and wastewater is continuously increasing thus causing additional concerns about their impact on public and environmental health. Therefore, catalytic processes have gained interest as they can produce radicals able to degrade recalcitrant micropollutants. Specifically, catalytic ozonation has received considerable attention due to its ability to achieve advanced treatment performances at reduced ozone doses. This study surveys and summarizes the application of catalytic ozonation in water and wastewater treatment, paying attention to both homogeneous and heterogeneous catalysts. This review integrates bibliometric analysis using VOS viewer with systematic paper reviews, to obtain detailed summary tables where process and operational parameters relevant to catalytic ozonation are reported. New insights emerging from heterogeneous and homogenous catalytic ozonation applied to water and wastewater treatment for the removal of organic pollutants in water have emerged and are discussed in this paper. Finally, the activities of a variety of heterogeneous catalysts have been assessed using their chemical–physical parameters such as point of zero charge (PZC), pKa, and pH, which can determine the effect of the catalysts (positive or negative) on catalytic ozonation processes.
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Lutic D, Sescu AM, Siamer S, Harja M, Favier L. Excellent ambient oxidation and mineralization of an emerging water pollutant using Pd-doped TiO 2 photocatalyst and UV-A irradiation. CR CHIM 2022. [DOI: 10.5802/crchim.145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Jia F, Zhao D, Shu M, Sun F, Wang D, Chen C, Deng Y, Zhu X. Co-doped Fe-MIL-100 as an adsorbent for tetracycline removal from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:55026-55038. [PMID: 35307798 DOI: 10.1007/s11356-022-19684-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
In the study, Fe-MIL-100 was modified by adding Co2+ in the synthesis process; Co/Fe-MIL-100 was successfully synthesized and used to adsorb tetracycline. The addition of Co2+ increased the thermal stability of Fe-MIL-100 without changing the crystal structure. It was found that Co/Fe-MIL-100 exhibited satisfactory performance in tetracycline removal, the tetracycline removal efficiency reached almost 100% in the initial concentration range of 10-40 mg/L, and it still reached 82.38% under the condition of 60 mg/L tetracycline. Besides, the factors of tetracycline concentration, pH and inorganic anion on removal efficiency were explored. The coexistence of inorganic anion decreased the adsorption capacity of tetracycline due to the competitive adsorption. CO32- had a more obvious inhibition effect on the adsorption efficiency of tetracycline than Cl-. The fitting correlation coefficient of Langmuir model was higher and the kinetics better fitted by pseudo-second-order, respectively. As a result of its high removal efficiency and excellent recycling performance, it has great potential in application fields such as removing tetracycline from wastewater.
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Affiliation(s)
- Feiyue Jia
- Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai, 200120, China
| | - Donghua Zhao
- Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai, 200120, China
| | - Mengzhao Shu
- Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai, 200120, China
| | - Feifei Sun
- Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai, 200120, China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.
- Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, People's Republic of China.
| | - Chen Chen
- Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai, 200120, China
| | - Yu Deng
- Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai, 200120, China
| | - Xiaoming Zhu
- Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai, 200120, China
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Pt nanoclusters embedded Fe-based metal-organic framework as a dual-functional electrocatalyst for hydrogen evolution and alcohols oxidation. J Colloid Interface Sci 2022; 616:279-286. [PMID: 35219193 DOI: 10.1016/j.jcis.2022.02.073] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 12/14/2022]
Abstract
Design and construction of high-efficiency and durable dual-functional electrocatalyst for clean energy electrocatalytic reaction is urgently desirable for mitigating the energy shortage and environmental deterioration issues. Herein, we prepared Pt nanoclusters with exposed (111) face plane embedded Fe-based metal-organic frameworks (Fe-MOF, MIL-100(Fe)) catalyst for electrocatalytic hydrogen evolution reaction (HER) and ethylene glycol oxidation reaction (EGOR). It is noted that the available oxygen sites on the surface of MIL-100(Fe) would form Pt-O interaction with Pt nanoclusters to acquire strong interfacial interaction, which endows Pt/MIL-100(Fe) electrocatalyst effective electron transfer, increasing catalytic active sites, accelerating proton-electron coupling, and improving conductivity. Benefitting from the desirable metal-supports interaction and derive merits for catalysis, the high electrocatalytic activity and durability for HER and EGOR were achieved as expected. Impressively, superior HER performance with higher current density, lower overpotential (46/29 mV in acidic/alkaline electrolyte) and smaller Tafel slope (19.7/37.8 mV dec-1 in acidic/alkaline electrolyte) were acquired compared to commercial Pt/C. Moreover, Pt/MIL-100(Fe) electrode exhibits a rather high mass activity of 11826 mA mg-1Pt and long-term stability for EGOR. The present investigation demonstrates the promise of active metal/MOF combination for the interfacial strategy and rational design of dual-functional electrocatalyst, which has potential applications for future electrocatalysis field.
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Physicochemical Modeling of the Adsorption of Pharmaceuticals on MIL-100-Fe and MIL-101-Fe MOFs. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/4482263] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
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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Hu Z, Liu H, Zuo Y, Ji Y, Li S, Zhang W, Liu Z, Chen Z, Zhang X, Wang X. Facile synthesis of magnesium-based metal-organic framework with tailored nanostructure for effective volatile organic compounds adsorption. ROYAL SOCIETY OPEN SCIENCE 2022; 9:211544. [PMID: 35360355 PMCID: PMC8965413 DOI: 10.1098/rsos.211544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/22/2022] [Indexed: 05/03/2023]
Abstract
A novel Mg(II) metal-organic framework (Mg-MOF) was synthesized based on the ligand of 2,2'-bipyridine-4,4'-dicarboxylic acid. Single-crystal X-ray structural analysis confirmed that three-dimensional-nanostructure Mg-MOFs formed a monoclinic system with a channel size of 15.733 Å × 23.736 Å. N2 adsorption isotherm, Fourier transform infrared spectroscopy, thermogravimetric analysis and high-resolution transmission electron microscopy were performed to characterize the thermal stability and purity of the Mg-MOFs. The adsorption studies on four typical volatile organic compounds (VOCs) emitted during wood drying showed that Mg-MOFs have noteworthy adsorption capacities, especially for benzene and β-pinene with adsorptions of 182.26 mg g-1 and 144.42 mg g-1, respectively. In addition, the adsorption of Mg-MOFs mainly occurred via natural adsorption, specifically, multi-layer physical adsorption, accompanied by chemical forces, which occurred in the pores where the VOCs molecules combined with active sites. As an adsorbent, Mg-MOFs exhibit versatile behaviour for toxic gas accumulation.
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Affiliation(s)
- Zichu Hu
- College of Science, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
| | - Hui Liu
- College of Material Science and Art Design, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
| | - Ya Zuo
- College of Science, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
| | - Yufei Ji
- College of Science, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
| | - Shujing Li
- College of Material Science and Art Design, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
| | - Wanqi Zhang
- College of Material Science and Art Design, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
| | - Zhechen Liu
- College of Material Science and Art Design, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
| | - Zhangjing Chen
- Department of Sustainable Biomaterials, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
| | - Xiaotao Zhang
- College of Science, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
- Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization, Hohhot, 010018, People's Republic of China
| | - Ximing Wang
- College of Material Science and Art Design, Inner Mongolia Agriculture University, Hohhot 010018, People's Republic of China
- Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization, Hohhot, 010018, People's Republic of China
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Co3O4 modified Mn0.2Cd0.8S with different shells forms p-n heterojunction to optimize energy/mass transfer for efficient photocatalytic hydrogen evolution. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Regulating N content to anchor Fe in Fe-MOFs: Obtaining multiple active sites as efficient photocatalysts. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2021.10.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ren Y, Zhang J, Ji C, Wang S, Lv L, Zhang W. Iron-based metal-organic framework derived pyrolytic materials for effective Fenton-like catalysis: Performance, mechanisms and practicability. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 809:152201. [PMID: 34890672 DOI: 10.1016/j.scitotenv.2021.152201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/28/2021] [Accepted: 12/01/2021] [Indexed: 06/13/2023]
Abstract
In this study, a new catalyst was fabricated by pyrolysis under nitrogen atmosphere with MIL-53(Fe) as the precursor, and was applied to catalyze Fenton-like process. Effects of calcination temperature and pH on decontamination performance, and stability of materials were investigated. Under optimal conditions (calcination temperature of 500 °C and pH of 5.0), the new Fenton-like system remained low iron leaching, and achieved high pseudo-first-order rate constant of 0.0251 min-1 for bisphenol S (BPS) removal, which is much higher than those in MIL-53(Fe), and nano-Fe3O4 catalyzed Fenton-like systems. The superiority of the new catalyst for Fenton-like catalysis was attributed to high specific surface area, as well as formed Fe(II), coordinatively unsaturated iron center and the Fe-O/Fe-C compounds based on the analyses of characterizations. Furthermore, main active species for BPS degradation was identified as hydroxyl radicals, and total hydroxyl radical generation was determined by trapping experiments. The degradation pathways of BPS were also proposed by intermediates monitoring. Moreover, this catalyst showed good potential for practical application, according to the evaluation of reuse, different pollutants degradation, and BPS removal in real wastewater. We believe this study developed a new catalyst with high catalytic activity, high stability and wide application scope, and also sheds light on further development of metal-organic frameworks for Fenton-like catalysis.
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Affiliation(s)
- Yi Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Jing Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Chenghan Ji
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Shu Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Lu Lv
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; State Environmental Protection Engineering Center for Organic Chemical Wastewater Treatment and Resource Reuse, Nanjing 210023, China
| | - Weiming Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; State Environmental Protection Engineering Center for Organic Chemical Wastewater Treatment and Resource Reuse, Nanjing 210023, China.
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Brillas E. A critical review on ibuprofen removal from synthetic waters, natural waters, and real wastewaters by advanced oxidation processes. CHEMOSPHERE 2022; 286:131849. [PMID: 34426267 DOI: 10.1016/j.chemosphere.2021.131849] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/07/2021] [Indexed: 05/20/2023]
Abstract
Ibuprofen (IBP) is one ubiquitous drug prescribed as anti-inflammatory, analgesic, and antipyretic. It has been detected in effluents of wastewater plant treatments, sewage sludge, hospital wastewaters, surface waters, and drinking water due to its continuous release to the environment, mainly from the excretion in the urine of animals and humans. IBP is a carcinogenic and non-steroidal endocrine disrupting drug with harmful effects over fungal, bacterial, algae, microorganisms, crustacean, and fish species, and can be potentially hazard for human health. Since conventional treatments remove inefficiently this drug, many advanced oxidation processes (AOPs) have been developed aiming their abatement from waters to avoid their harmful health problems. This paper presents an exhaustive and critical review on the application of AOPs to treat synthetic waters, natural waters, and real wastewaters polluted with IBP alone or mixed with other common drugs covering up to 2020. The characteristics and main results obtained for single, hybrid, and sequential treatments are described. Dielectric barrier or pulsed-corona discharges are detailed among the single processes. Hybrid processes such as photocatalysis (UV/H2O2, UV/chlorine, TiO2/UV), hybrid ozonation (O3/H2O2, electro-peroxone, catalytic ozonation), Fenton-based processes (photo-Fenton, electro-Fenton, photoelectro-Fenton), zero-valent iron, ultrasonic, peroxymonosulfate, and persulfate, are discussed. The effect of the kind of irradiation (UV, visible, solar) on photo-assisted processes is analyzed. Sequential processes with biological pre- or post-treatments using or not membranes for natural water and real wastewater remediation are described. Finally, 38 by-products detected during IBP removal by AOPs are reported, allowing envisaging three parallel pathways for its initial degradation.
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Affiliation(s)
- Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Secció de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain.
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15
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Li Q, Li R, Ma X, Zhang W, Sarkar B, Sun X, Bolan N. Efficient removal of antimonate from water by yttrium-based metal-organic framework: Adsorbent stability and adsorption mechanism investigation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127877] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Joseph J, Iftekhar S, Srivastava V, Fallah Z, Zare EN, Sillanpää M. Iron-based metal-organic framework: Synthesis, structure and current technologies for water reclamation with deep insight into framework integrity. CHEMOSPHERE 2021; 284:131171. [PMID: 34198064 DOI: 10.1016/j.chemosphere.2021.131171] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/03/2021] [Accepted: 06/07/2021] [Indexed: 06/13/2023]
Abstract
Water is a supreme requirement for the existence of life, the contamination from the point and non-point sources are creating a great threat to the water ecosystem. Advance tools and techniques are required to restore the water quality and metal-organic framework (MOFs) with a tunable porous structure, striking physical and chemical properties are an excellent candidate for it. Fe-based MOFs, which developed rapidly in recent years, are foreseen as most promising to overcome the disadvantages of traditional water depolluting practices. Fe-MOFs with low toxicity and preferable stability possess excellent performance potential for almost all water remedying techniques in contrast to other MOF structures, especially visible light photocatalysis, Fenton, and Fenton-like heterogeneous catalysis. Fe-MOFs become essential tool for water treatment due to their high catalytic activity, abundant active site and pollutant-specific adsorption. However, the structural degradation under external chemical, photolytic, mechanical, and thermal stimuli is impeding Fe-MOFs from further improvement in activity and their commercialization. Understanding the shortcomings of structural integrity is crucial for large-scale synthesis and commercial implementation of Fe-MOFs-based water treatment techniques. Herein we summarize the synthesis, structure and recent advancements in water remediation methods using Fe-MOFs in particular more attention is paid for adsorption, heterogeneous catalysis and photocatalysis with clear insight into the mechanisms involved. For ease of analysis, the pollutants have been classified into two major classes; inorganic pollutants and organic pollutants. In this review, we present for the first time a detailed insight into the challenges in employing Fe-MOFs for water remediation due to structural instability.
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Affiliation(s)
- Jessy Joseph
- Department of Chemistry, Jyväskylä University, Jyväskylä, Finland
| | - Sidra Iftekhar
- Department of Applied Physics, University of Eastern Finland, Kuopio, 70120, Finland
| | - Varsha Srivastava
- Department of Chemistry, Jyväskylä University, Jyväskylä, Finland; Research Unit of Sustainable Chemistry, Faculty of Technology, University of Oulu, Oulu, 90014, Finland.
| | - Zari Fallah
- Faculty of Chemistry, University of Mazandaran, Babolsar, 47416-95447, Iran
| | | | - Mika Sillanpää
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; School of Resources and Environment, University of Electronic Science and Technology of China (UESTC), NO. 2006, Xiyuan Ave., West High-Tech Zone, Chengdu, Sichuan, 611731, PR China; Faculty of Science and Technology, School of Applied Physics, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia; School of Chemistry, Shoolini University, Solan, Himachal Pradesh, 173229, India; Department of Biological and Chemical Engineering, Aarhus University, Nørrebrogade 44, 8000, Aarhus C, Denmark
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17
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Yin Y, Xin Z, Xu G, Liu Y. A new type of dual-nuclear binary composite catalyst BiCoPc/MIL-100(Fe) for synergistic photocatalytic degradation of dyes. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.2001721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yanbing Yin
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Zhaosong Xin
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Guopeng Xu
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
| | - Yang Liu
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, China
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18
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Wu D, Jiang J, Tian N, Wang M, Huang J, Yu D, Wu M, Ni H, Ye P. Highly efficient heterogeneous photo-Fenton BiOCl/MIL-100(Fe) nanoscaled hybrid catalysts prepared by green one-step coprecipitation for degradation of organic contaminants. RSC Adv 2021; 11:32383-32393. [PMID: 35495505 PMCID: PMC9041883 DOI: 10.1039/d1ra06549a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 09/23/2021] [Indexed: 11/21/2022] Open
Abstract
An excellent heterojunction structure is vital for the improvement of photocatalytic performance. In this study, BiOCl/MIL-100(Fe) hybrid composites were prepared via a one-pot coprecipitation method for the first time. The prepared materials were characterized and then used as a photo-Fenton catalyst for the removal of organic pollutants in wastewater. The BiOCl/MIL-100(Fe) hybrid exhibited better photo-Fenton activity than MIL-100(Fe) and BiOCl for RhB degradation; in particular, the hybrid with 50% Bi molar concentration showed the highest efficiency. The excellent performance can be ascribed to the presence of coordinatively unsaturated iron centers, abundant Lewis acid sites, fast H2O2 activation, and efficient carrier separation on BiOCl nanosheets due to the high charge carrier mobility of the nanosheets. The photo-Fenton mechanism was studied, and the results indicated that ˙OH and h+ were the main active species for organic pollutant degradation. The coprecipitation-based hybridization approach presented in this paper opens up an avenue for the sustainable fabrication of photo-Fenton catalysts with abundant coordinatively unsaturated metal centers and efficient electron–hole separation capacity. An excellent heterojunction structure is vital for the improvement of photocatalytic performance.![]()
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Affiliation(s)
- Doufeng Wu
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China .,Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Jiantang Jiang
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Nini Tian
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Mei Wang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Jing Huang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Deyou Yu
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Minghua Wu
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Huagang Ni
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China .,Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Peng Ye
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China .,Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
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19
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Abrile MG, Ciucio MM, Demarchi LM, Bono VM, Fiasconaro ML, Lovato ME. Degradation and mineralization of the emerging pharmaceutical pollutant sildenafil by ozone and UV radiation using response surface methodology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:23868-23886. [PMID: 33219934 DOI: 10.1007/s11356-020-11717-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 11/16/2020] [Indexed: 06/11/2023]
Abstract
Pharmaceuticals and their degradation products which are present in wastewater and superficial waters are becoming an ecological issue. This research investigated the degradation and mineralization of synthetic solutions of the pharmaceutical compound sildenafil citrate (SC) by single ozonation and ozonation jointed with UV radiation (O3/UV). The effects of initial drug concentration (50-125 mg L-1), inlet ozone concentration (35-125 g Nm-3), and UV radiation on SC degradation and decrease of total organic carbon (TOC) were investigated using response surface methodology based on a central composite experimental design. Through the RSM analysis, it was possible to confirm the removal of SC for the entire experimental range. Major intermediates of SC degradation were identified and a degradation pathway was proposed. The kinetics of SC degradation was modeled as a pseudo-first-order reaction with a rate constant ranging between 0.072 and 1.250 min-1. The SC degradation and TOC removal were strongly enhanced by increasing the concentration of gaseous ozone at the inlet and incorporating UV radiation. The highest TOC removal reached at 60 min was 75%, in the O3/UV system, with initial SC content of 50 mg L-1 and inlet ozone concentration of 125 g Nm-3. The degradation rate of SC was increased 3 to 9 times in the presence of UV radiation. Ozone-based advanced oxidation processes appear as a suitable alternative for treatment of the emerging pollutant SC.
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Affiliation(s)
- Mariana Guadalupe Abrile
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - María Michela Ciucio
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - Lourdes Marlén Demarchi
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - Virginia Mariel Bono
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - María Laura Fiasconaro
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina
| | - María Eugenia Lovato
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CCT CONICET Santa Fe, Ruta Nacional No. 168 Km 0. (3000), Santa Fe, Argentina.
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20
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Insights into the Stability and Activity of MIL-53(Fe) in Solar Photocatalytic Oxidation Processes in Water. Catalysts 2021. [DOI: 10.3390/catal11040448] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
MIL-53(Fe) is a metal organic framework that has been recently considered a heterogeneous photocatalyst candidate for the degradation of water pollutants under visible or solar radiation, though stability studies are rather scarce in the literature. In this work, MIL-53(Fe) was successfully synthesized by a solvothermal method and fully characterized by X-ray diffraction (XRD), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), N2 adsorption–desorption isotherm, Thermogravimetric analysis coupled with mass spectrometry (TGA-MS), UV-visible diffuse reflectance spectroscopy (DRS), elemental analysis and wavelength dispersive X-ray fluorescence (WDXRF). The effects of pH, temperature, solar radiation and the presence of oxidants (i.e., electron acceptors) such as ozone, persulfate and hydrogen peroxide on the stability of MIL-53(Fe) in water were investigated. The as-synthetized MIL-53(Fe) exhibited relatively good stability in water at pH 4 but suffered fast hydrolysis at alkaline conditions. At pH 4–5, temperature, radiation (solar and visible radiation) and oxidants exerted negative effect on the stability of the metal–organic framework (MOF) in water, resulting in non-negligible amounts of metal (iron) and linker (terephthalic acid, H2BDC) leached out from MIL-53(Fe). The photocatalytic activity of MIL-53(Fe) under simulated solar radiation was studied using phenol and metoprolol as target pollutants. MIL-53(Fe) on its own removed less than 10% of the pollutants after 3 h of irradiation, while in the presence of ozone, persulfate or hydrogen peroxide, complete elimination of pollutants was achieved within 2 h of exposure to radiation. However, the presence of oxidants and the formation of some reaction intermediates (e.g., short-chain carboxylic acids) accelerated MIL-53(Fe) decarboxylation. The findings of this work suggest that MIL-53(Fe) should not be recommended as a heterogeneous photocatalyst for water treatment before carrying out a careful evaluation of its stability under actual reaction conditions.
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21
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Christodoulou I, Bourguignon T, Li X, Patriarche G, Serre C, Marlière C, Gref R. Degradation Mechanism of Porous Metal-Organic Frameworks by In Situ Atomic Force Microscopy. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:722. [PMID: 33805652 PMCID: PMC8001454 DOI: 10.3390/nano11030722] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/04/2021] [Accepted: 03/11/2021] [Indexed: 12/02/2022]
Abstract
In recent years, Metal-Organic Frameworks (MOFs) have attracted a growing interest for biomedical applications. The design of MOFs should take into consideration the subtle balance between stability and biodegradability. However, only few studies have focused on the MOFs' stability in physiological media and their degradation mechanism. Here, we investigate the degradation of mesoporous iron (III) carboxylate MOFs, which are among the most employed MOFs for drug delivery, by a set of complementary methods. In situ AFM allowed monitoring with nanoscale resolution the morphological, dimensional, and mechanical properties of a series of MOFs in phosphate buffer saline and in real time. Depending on the synthetic route, the external surface presented either well-defined crystalline planes or initial defects, which influenced the degradation mechanism of the particles. Moreover, MOF stability was investigated under different pH conditions, from acidic to neutral. Interestingly, despite pronounced erosion, especially at neutral pH, the dimensions of the crystals were unchanged. It was revealed that the external surfaces of MOF crystals rapidly respond to in situ changes of the composition of the media they are in contact with. These observations are of a crucial importance for the design of nanosized MOFs for drug delivery applications.
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Affiliation(s)
- Ioanna Christodoulou
- Institute of Molecular Sciences, UMR CNRS 8214, Université Paris Saclay, 91400 Orsay, France; (I.C.); (T.B.); (X.L.)
- Institut des Matériaux Poreux de Paris, UMR 8004, Ecole Normale Supérieure, ESPCI Paris, CNRS, PSL University, 75005 Paris, France;
| | - Tom Bourguignon
- Institute of Molecular Sciences, UMR CNRS 8214, Université Paris Saclay, 91400 Orsay, France; (I.C.); (T.B.); (X.L.)
| | - Xue Li
- Institute of Molecular Sciences, UMR CNRS 8214, Université Paris Saclay, 91400 Orsay, France; (I.C.); (T.B.); (X.L.)
| | - Gilles Patriarche
- Center for Nanoscience and Nanotechnology, UMR 9001, CNRS, Université Paris Saclay, 75000 Palaiseau, France;
| | - Christian Serre
- Institut des Matériaux Poreux de Paris, UMR 8004, Ecole Normale Supérieure, ESPCI Paris, CNRS, PSL University, 75005 Paris, France;
| | - Christian Marlière
- Laboratoire de Physique des Solides, UMR CNRS 8502, Université Paris Saclay, 91400 Orsay, France;
| | - Ruxandra Gref
- Institute of Molecular Sciences, UMR CNRS 8214, Université Paris Saclay, 91400 Orsay, France; (I.C.); (T.B.); (X.L.)
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