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Niculescu AG, Mihaiescu B, Mihaiescu DE, Hadibarata T, Grumezescu AM. An Updated Overview of Magnetic Composites for Water Decontamination. Polymers (Basel) 2024; 16:709. [PMID: 38475395 DOI: 10.3390/polym16050709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
Water contamination by harmful organic and inorganic compounds seriously burdens human health and aquatic life. A series of conventional water purification methods can be employed, yet they come with certain disadvantages, including resulting sludge or solid waste, incomplete treatment process, and high costs. To overcome these limitations, attention has been drawn to nanotechnology for fabricating better-performing adsorbents for contaminant removal. In particular, magnetic nanostructures hold promise for water decontamination applications, benefiting from easy removal from aqueous solutions. In this respect, numerous researchers worldwide have reported incorporating magnetic particles into many composite materials. Therefore, this review aims to present the newest advancements in the field of magnetic composites for water decontamination, describing the appealing properties of a series of base materials and including the results of the most recent studies. In more detail, carbon-, polymer-, hydrogel-, aerogel-, silica-, clay-, biochar-, metal-organic framework-, and covalent organic framework-based magnetic composites are overviewed, which have displayed promising adsorption capacity for industrial pollutants.
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Affiliation(s)
- Adelina-Gabriela Niculescu
- Research Institute of the University of Bucharest-ICUB, University of Bucharest, 050657 Bucharest, Romania
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
| | - Bogdan Mihaiescu
- Research Institute of the University of Bucharest-ICUB, University of Bucharest, 050657 Bucharest, Romania
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
| | - Dan Eduard Mihaiescu
- Department of Organic Chemistry, Politehnica University of Bucharest, 011061 Bucharest, Romania
| | - Tony Hadibarata
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
- Environmental Engineering Program, Faculty of Engineering and Science, Curtin University, Miri 98009, Malaysia
| | - Alexandru Mihai Grumezescu
- Research Institute of the University of Bucharest-ICUB, University of Bucharest, 050657 Bucharest, Romania
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, Gh. Polizu St. 1-7, 060042 Bucharest, Romania
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Qu G, Zhang Y, Zhou J, Tang H, Ji W, Yan Z, Pan K, Ning P. Simultaneous electrochemical detection of dimethyl bisphenol A and bisphenol A using a novel Pt@SWCNTs-MXene-rGO modified screen-printed sensor. CHEMOSPHERE 2023:139315. [PMID: 37392799 DOI: 10.1016/j.chemosphere.2023.139315] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 06/09/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023]
Abstract
Since bisphenol A (BPA) and dimethyl bisphenol A (DM-BPA) are human endocrine disruptors (EDCs) with tiny potential differences (44 mV) and widespread applications, there is a lack of published reports on their simultaneous detection. Therefore, this study reports a novel electrochemical detection system capable of simultaneous direct detection of BPA and DM-BPA using screen-printed carbon electrodes (SPCE) as a sensing platform. To improve the electrochemical performance of the SPCE, the SPCE was modified by using a combination of Pt nanoparticles modified with single-walled carbon nanotubes (Pt@SWCNTs), MXene (Ti3C2), and graphene oxide (GO). In addition, the GO in Pt@SWCNTs-MXene-GO was reduced to reduced graphene oxide (rGO) by the action of electric field (-1.2 V), which significantly improved the electrochemical properties of the composites and effectively solved the problem of dispersion of the modified materials on the electrode surface. Under optimal experimental conditions, Pt@SWCNTs-Ti3C2-rGO/SPCE exhibited a suitable detection range (0.006-7.4 μmol L-1) and low detection limits (2.8 and 3 nmol L-1, S/N = 3) for the simultaneous detection of BPA (0.392 V vs. Ag/AgCl) and DM-BPA (0.436 V vs. Ag/AgCl)). Thus, this study provides new insights into detecting compounds with similar structures and slight potential differences. Finally, the developed sensor's reproducibility, stability, interference resistance and accuracy were demonstrated with satisfactory results.
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Affiliation(s)
- Guangfei Qu
- Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China
| | - Yun Zhang
- Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China
| | - Junhong Zhou
- Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China
| | - Huimin Tang
- Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China
| | - Wei Ji
- Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China
| | - Zhoupeng Yan
- Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China
| | - Keheng Pan
- Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China
| | - Ping Ning
- Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
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Kirshanov K, Toms R, Aliev G, Naumova A, Melnikov P, Gervald A. Recent Developments and Perspectives of Recycled Poly(ethylene terephthalate)-Based Membranes: A Review. MEMBRANES 2022; 12:membranes12111105. [PMID: 36363660 PMCID: PMC9699556 DOI: 10.3390/membranes12111105] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/29/2022] [Accepted: 11/03/2022] [Indexed: 06/01/2023]
Abstract
Post-consumer poly(ethylene terephthalate) (PET) waste disposal is an important task of modern industry, and the development of new PET-based value added products and methods for their production is one of the ways to solve it. Membranes for various purposes, in this regard are such products. The aim of the review, on the one hand, is to systematize the known methods of processing PET and copolyesters, highlighting their advantages and disadvantages and, on the other hand, to show what valuable membrane products could be obtained, and in what areas of the economy they can be used. Among the various approaches to the processing of PET waste, we single out chemical methods as having the greatest promise. They are divided into two large categories: (1) aimed at obtaining polyethylene terephthalate, similar in properties to the primary one, and (2) aimed at obtaining copolyesters. It is shown that among the former, glycolysis has the greatest potential, and among the latter, destruction followed by copolycondensation and interchain exchange with other polyesters, have the greatest prospects. Next, the key technologies for obtaining membranes, based on polyethylene terephthalate and copolyesters are considered: (1) ion track technology, (2) electrospinning, and (3) non-solvent induced phase separation. The methods for the additional modification of membranes to impart hydrophobicity, hydrophilicity, selective transmission of various substances, and other properties are also given. In each case, examples of the use are considered, including gas purification, water filtration, medical and food industry use, analytical and others. Promising directions for further research are highlighted, both in obtaining recycled PET-based materials, and in post-processing and modification methods.
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Nanocomposites of functionalized Metal−Organic frameworks and magnetic graphene oxide for selective adsorption and efficient determination of Lead(II). J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dong Y, Lin Y, Du C, Zhou C, Yang S. Manipulating hydropathicity/hydrophobicity properties to achieve anti-corrosion copper-based membrane toward high-efficient solar water purification. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yang F, Du M, Yin K, Qiu Z, Zhao J, Liu C, Zhang G, Gao Y, Pang H. Applications of Metal-Organic Frameworks in Water Treatment: A Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2105715. [PMID: 34881495 DOI: 10.1002/smll.202105715] [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: 09/17/2021] [Revised: 10/15/2021] [Indexed: 06/13/2023]
Abstract
The ever-expanding scale of industry and agriculture has led to the gradual increase of pollutants (e.g., heavy metal ions, synthetic dyes, and antibiotics) in water resources, and the ecology and wastewater are grave problems that need to be solved urgently and has attracted widespread attention from the research community and industry in recent years. Metal-organic frameworks (MOFs) are a type of organic-inorganic hybrid material with a distinctive 3D network crystal structure. Lately, MOFs have made striking progress in the fields of adsorption, catalytic degradation, and biomedicine on account of their large specific surface and well-developed pore structure. This review summarizes the latest research achievements in the preparation of pristine MOFs, MOF composites, and MOF derivatives for various applications including the removal of heavy metal ions, organic dyes, and other harmful substances in sewage. Furthermore, the working mechanisms of utilizing adsorption, photocatalytic degradation, and membrane separation technologies are also briefly described for specific pollutants removal from sewage. It is expected that this review will provide inspiration and references for the synthesis of pristine MOFs as well as their composites and derivatives with excellent water treatment performance.
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Affiliation(s)
- Feiyu Yang
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, P. R. China
- School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu, 213164, P. R. China
| | - Meng Du
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China
| | - Kailiang Yin
- School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu, 213164, P. R. China
| | - Ziming Qiu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China
| | - Jiawei Zhao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China
| | - Chunli Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China
| | - Guangxun Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China
| | - Yajun Gao
- School of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu, 225127, P. R. China
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China
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Dmitrenko M, Chepeleva A, Liamin V, Mazur A, Semenov K, Solovyev N, Penkova A. Novel Mixed Matrix Membranes Based on Polyphenylene Oxide Modified with Graphene Oxide for Enhanced Pervaporation Dehydration of Ethylene Glycol. Polymers (Basel) 2022; 14:polym14040691. [PMID: 35215603 PMCID: PMC8877255 DOI: 10.3390/polym14040691] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/06/2022] [Accepted: 02/08/2022] [Indexed: 12/10/2022] Open
Abstract
Ethylene glycol (EG) is widely used in various economic and industrial fields. The demand for its efficient separation and recovery from water is constantly growing. To improve the pervaporation characteristics of a poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) membrane in dehydration of ethylene glycol, the modification with graphene oxide (GO) nanoparticles was used. The effects of the introduction of various GO quantities into the PPO matrix on the structure and physicochemical properties were studied by Fourier-transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopies, scanning electron (SEM) and atomic force (AFM) microscopies, thermogravimetric analysis (TGA), swelling experiments, and contact angle measurements. Two types of membranes based on PPO and PPO/GO composite were developed: dense membranes and supported membranes on a fluoroplast substrate (MFFC). Transport properties of the developed membranes were evaluated in the pervaporation dehydration of EG in a wide concentration range (10–90 wt.% and 10–30 wt.% water for the dense and supported membranes, respectively). The supported PPO/GO(0.7%)/MFFC membrane demonstrated the best transport properties in pervaporation dehydration of EG (10–30 wt.% water) at 22 °C: permeation flux ca. 15 times higher compared to dense PPO membrane—180–230 g/(m2·h)), 99.8–99.6 wt.% water in the permeate. The membrane is suitable for the promising industrial application.
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Affiliation(s)
- Mariia Dmitrenko
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 Saint Petersburg, Russia; (A.C.); (V.L.); (A.M.); (A.P.)
- Correspondence: ; Tel.: +7-(812)-363-6000 (ext. 3367)
| | - Anastasia Chepeleva
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 Saint Petersburg, Russia; (A.C.); (V.L.); (A.M.); (A.P.)
| | - Vladislav Liamin
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 Saint Petersburg, Russia; (A.C.); (V.L.); (A.M.); (A.P.)
| | - Anton Mazur
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 Saint Petersburg, Russia; (A.C.); (V.L.); (A.M.); (A.P.)
| | - Konstantin Semenov
- Pavlov First Saint Petersburg State Medical University, L’va Tolstogo Ulitsa 6-8, 197022 Saint Petersburg, Russia;
| | - Nikolay Solovyev
- Institute of Technology Sligo, Ash Lane, F91 YW50 Sligo, Ireland;
| | - Anastasia Penkova
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 Saint Petersburg, Russia; (A.C.); (V.L.); (A.M.); (A.P.)
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Mohamed Noor SH, Othman MHD, Khongnakorn W, Sinsamphanh O, Abdullah H, Puteh MH, Kurniawan TA, Zakria HS, El-badawy T, Ismail AF, Rahman MA, Jaafar J. Bisphenol A Removal Using Visible Light Driven Cu2O/PVDF Photocatalytic Dual Layer Hollow Fiber Membrane. MEMBRANES 2022; 12:membranes12020208. [PMID: 35207130 PMCID: PMC8877201 DOI: 10.3390/membranes12020208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/26/2022] [Accepted: 01/26/2022] [Indexed: 01/27/2023]
Abstract
Bisphenol A (BPA) is amongst the endocrine disrupting compounds (EDCs) that cause illness to humans and in this work was removed using copper (I) oxide (Cu2O) visible light photocatalyst which has a narrow bandgap of 2.2 eV. This was done by embedding Cu2O into polyvinylidene fluoride (PVDF) membranes to generate a Cu2O/PVDF dual layer hollow fiber (DLHF) membrane using a co-extrusion technique. The initial ratio of 0.25 Cu2O/PVDF was used to study variation of the outer dope extrusion flowrate for 3 mL/min, 6 mL/min and 9 mL/min. Subsequently, the best flowrate was used to vary Cu2O/PVDF for 0.25, 0.50 and 0.75 with fixed outer dope extrusion flowrate. Under visible light irradiation, 10 mg/L of BPA was used to assess the membranes performance. The results show that the outer and inner layers of the membrane have finger-like structures, whereas the intermediate section of the membrane has a sponge-like structure. With high porosity up to 63.13%, the membrane is hydrophilic and exhibited high flux up to 13,891 L/m2h. The optimum photocatalytic membrane configuration is 0.50 Cu2O/PVDF DLHF membrane with 6 mL/min outer dope flowrate, which was able to remove 75% of 10 ppm BPA under visible light irradiation without copper leaching into the water sample.
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Affiliation(s)
- Siti Hawa Mohamed Noor
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia; (S.H.M.N.); (M.H.P.); (H.S.Z.); (T.E.-b.); (A.F.I.); (M.A.R.); (J.J.)
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia; (S.H.M.N.); (M.H.P.); (H.S.Z.); (T.E.-b.); (A.F.I.); (M.A.R.); (J.J.)
- Correspondence:
| | - Watsa Khongnakorn
- Department of Civil and Environmental Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla 90110, Thailand;
| | - Oulavanh Sinsamphanh
- Faculty of Environmental Science, Dongdok Campus, National University of Laos, Xaythany District, Vientiane 01080, Laos;
| | - Huda Abdullah
- Department of Electrical, Electronic & Systems Engineering, Faculty of Engineering & Built Environment, The National University of Malaysia, Bangi 43600, Selangor, Malaysia;
| | - Mohd Hafiz Puteh
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia; (S.H.M.N.); (M.H.P.); (H.S.Z.); (T.E.-b.); (A.F.I.); (M.A.R.); (J.J.)
- School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia
| | | | - Hazirah Syahirah Zakria
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia; (S.H.M.N.); (M.H.P.); (H.S.Z.); (T.E.-b.); (A.F.I.); (M.A.R.); (J.J.)
| | - Tijjani El-badawy
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia; (S.H.M.N.); (M.H.P.); (H.S.Z.); (T.E.-b.); (A.F.I.); (M.A.R.); (J.J.)
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia; (S.H.M.N.); (M.H.P.); (H.S.Z.); (T.E.-b.); (A.F.I.); (M.A.R.); (J.J.)
| | - Mukhlis A. Rahman
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia; (S.H.M.N.); (M.H.P.); (H.S.Z.); (T.E.-b.); (A.F.I.); (M.A.R.); (J.J.)
| | - Juhana Jaafar
- Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia; (S.H.M.N.); (M.H.P.); (H.S.Z.); (T.E.-b.); (A.F.I.); (M.A.R.); (J.J.)
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9
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Omer AM, Abd El-Monaem EM, El-Subruiti GM, Abd El-Latif MM, Eltaweil AS. Fabrication of easy separable and reusable MIL-125(Ti)/MIL-53(Fe) binary MOF/CNT/Alginate composite microbeads for tetracycline removal from water bodies. Sci Rep 2021; 11:23818. [PMID: 34893701 PMCID: PMC8664953 DOI: 10.1038/s41598-021-03428-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 11/30/2021] [Indexed: 01/17/2023] Open
Abstract
In this investigation, we aimed to fabricate easy separable composite microbeads for efficient adsorption of tetracycline (TC) drug. MIL-125(Ti)/MIL-53(Fe) binary metal organic framework (MOF) was synthetized and incorporated with carbon nanotube (CNT) into alginate (Alg) microbeads to form MIL-125(Ti)/MIL-53(Fe)/CNT@Alg composite microbeads. Various tools including FTIR, XRD, SEM, BET, Zeta potential and XPS were applied to characterize the composite microbeads. It was found that the specific surface area of MIL-125(Ti)/MIL-53(Fe)/CNT@Alg microbeads was 273.77 m2/g. The results revealed that the adsorption of TC augmented with rising CNT proportion up to 15 wt% in the microbeads matrix. In addition, the adsorption process followed the pseudo-second-order and well-fitted to Freundlich and Langmuir models with a maximum adsorption capacity of 294.12 mg/g at 25 ◦C and pH 6. Furthermore, thermodynamic study clarified that the TC adsorption process was endothermic, random and spontaneous. Besides, reusability test signified that MIL-125(Ti)/MIL-53(Fe)/CNT@Alg composite microbeads retained superb adsorption properties for six consecutive cycles, emphasizing its potentiality for removing of pharmaceutical residues.
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Affiliation(s)
- Ahmed M Omer
- Polymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), P. O. Box: 21934, New Borg El-Arab City, Alexandria, Egypt.
| | - Eman M Abd El-Monaem
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Gehan M El-Subruiti
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Mona M Abd El-Latif
- Fabrication Technology Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), P. O. Box: 21934, New Borg El-Arab City, Alexandria, Egypt
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10
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CO 2/CH 4 and H 2/CH 4 Gas Separation Performance of CTA-TNT@CNT Hybrid Mixed Matrix Membranes. MEMBRANES 2021; 11:membranes11110862. [PMID: 34832091 PMCID: PMC8625587 DOI: 10.3390/membranes11110862] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/06/2021] [Accepted: 11/07/2021] [Indexed: 11/16/2022]
Abstract
This study explored the underlying synergy between titanium dioxide nanotube (TNT) and carbon nanotube (CNT) hybrid fillers in cellulose triacetate (CTA)-based mixed matrix membranes (MMMs) for natural gas purification. The CNT@TNT hybrid nanofillers were blended with CTA polymer and cast as a thin film by a facile casting technique, after which they were used for single gas separation. The hybrid filler-based membrane depicted a higher CO2 uptake affinity than the single filler (CNT/TNT)-based membrane. The gas separation results indicate that the hybrid fillers (TNT@CNT) are strongly selective for CO2 over CH4 and H2 over CH4. The increment in the CO2/CH4 and H2/CH4 selectivities compared to the pristine CTA membrane was 42.98 from 25.08 and 48.43 from 36.58, respectively. Similarly, the CO2 and H2 permeability of the CTA-TNT@CNT membrane increased by six- and five-fold, respectively, compared to the pristine CTA membrane. Such significant improvements in CO2/CH4 and H2/CH4 separation performance and thermal and mechanical properties suggest a feasible and practical approach for potential biogas upgrading and natural gas purification.
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11
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Ashtiani S, Sofer Z, Průša F, Friess K. Molecular-level fabrication of highly selective composite ZIF-8-CNT-PDMS membranes for effective CO2/N2, CO2/H2 and olefin/paraffin separations. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119003] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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12
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Khoshnamvand M, Hanachi P, Ashtiani S, Walker TR. Toxic effects of polystyrene nanoplastics on microalgae Chlorella vulgaris: Changes in biomass, photosynthetic pigments and morphology. CHEMOSPHERE 2021; 280:130725. [PMID: 33964753 DOI: 10.1016/j.chemosphere.2021.130725] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 05/28/2023]
Abstract
Presence of nanoplastics within aqueous media has raised concerns about their adverse impacts on aquatic organisms. This study evaluated toxic effects of amino-functionalized polystyrene nanoplastics (PS-NH2) with diameters of 90 (PS-NH2-90), 200 (PS-NH2-200) and 300 (PS-NH2-300) nm on green microalgae Chlorella vulgaris. A dose-dependent toxicity response by PS-NH2-90 and/or PS-NH2-200 on biomass and photosynthetic pigment (chlorophyll a) end-points of C. vulgaris was observed. Whereas varied concentrations of PS-NH2-300 had no significant toxic effect on biomass and chlorophyll a end-points compared to control groups (p > 0.05). A comparison of toxicity of similar concentrations of PS-NH2-90, PS-NH2-200 and PS-NH2-300 showed small-sized PS-NH2 were more toxic than large-sized PS-NH2 (toxicity of PS-NH2 increased in the order PS-NH2-300 < PS-NH2-200 < PS-NH2-90). With decreasing PS-NH2 size, greater morphological changes and loss of original shape were observed, so that algal density/size reduced, and cell aggregations increased. Since PS-NH2 have high affinity to C. vulgaris due to electrostatic interaction with polysaccharide wall of algae, this could be as the main reason for formation of large aggregates at high concentrations of PS-NH2 compared to low concentrations of PS-NH2 used in algae medium. At high concentrations, PS-NH2 may act as intermediaries for connection of algal cells and therefore formation of aggregates. Field emission scanning electron microscopy images confirmed that high amounts of PS-NH2-90 were found to be embedded and adsorbed on algal cells, thereby limiting transfer of materials, gas exchange and energy between the aqueous medium and algal cells. These data may have serious ecological health implications, as C. vulgaris are important primary producers responsible for producing oxygen in aquatic environments.
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Affiliation(s)
- Mehdi Khoshnamvand
- Department of Biotechnology, Faculty of Biological Science, Alzahra University, Tehran, Iran
| | - Parichehr Hanachi
- Department of Biotechnology, Faculty of Biological Science, Alzahra University, Tehran, Iran.
| | - Saeed Ashtiani
- Department of Physical Chemistry, University of Chemistry and Technology, Technicka 5, Prague, 16628, Prague 6, Czech Republic
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, B3H 4R2, Canada
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Ashtiani S, Khoshnamvand M, Regmi C, Friess K. Interfacial Design of Mixed Matrix Membranes via Grafting PVA on UiO-66-NH 2 to Enhance the Gas Separation Performance. MEMBRANES 2021; 11:419. [PMID: 34072897 PMCID: PMC8229502 DOI: 10.3390/membranes11060419] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 05/27/2021] [Accepted: 05/29/2021] [Indexed: 11/16/2022]
Abstract
In this study, defect-free facilitated transport mixed matrix membrane (MMM) with high loading amount of UiO-66-NH2 nanoparticles as metal-organic frameworks (MOFs) was fabricated. The MOFs were covalently bonded with poly (vinyl alcohol) (PVA) to incorporate into a poly (vinyl amine) (PVAm) matrix solution. A uniform UiO-66-NH2 dispersion up to 55 wt.% was observed without precipitation and agglomeration after one month. This can be attributed to the high covalent interaction at interfaces of UiO-66-NH2 and PVAm, which was provided by PVA as a functionalized organic linker. The CO2 permeability and CO2/N2 and selectivity were significantly enhanced for the fabricated MMM by using optimal fabrication parameters. This improvement in gas performance is due to the strong impact of solubility and decreasing diffusion in obtained dense membrane to promote CO2 transport with a bicarbonate reversible reaction. Therefore, the highest amount of amine functional groups of PVAm among all polymers, plus the abundant amount of amines from UiO-66-NH2, facilitated the preferential CO2 permeation through the bicarbonate reversible reaction between CO2 and -NH2 in humidified conditions. XRD and FTIR were employed to study the MMM chemical structure and polymers-MOF particle interactions. Cross-sectional and surface morphology of the MMM was observed by SEM-EDX and 3D optical profilometer to detect the dispersion of MOFs into the polymer matrix and explore their interfacial morphology. This approach can be extended for a variety of polymer-filler interfacial designs for gas separation applications.
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Affiliation(s)
- Saeed Ashtiani
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic;
| | - Mehdi Khoshnamvand
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
| | - Chhabilal Regmi
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic;
| | - Karel Friess
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic;
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Ashtiani S, Khoshnamvand M, Číhal P, Dendisová M, Randová A, Bouša D, Shaliutina-Kolešová A, Sofer Z, Friess K. Fabrication of a PVDF membrane with tailored morphology and properties via exploring and computing its ternary phase diagram for wastewater treatment and gas separation applications. RSC Adv 2020; 10:40373-40383. [PMID: 35520860 PMCID: PMC9057459 DOI: 10.1039/d0ra07592b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/02/2020] [Indexed: 11/21/2022] Open
Abstract
We report a simple approach for tailoring the morphology of poly(vinylidene fluoride) (PVDF) membranes fabricated using a nonsolvent induced phase separation (NIPS) method that sustains both the hydrophilic and hydrophobic properties. Various membrane structures, i.e. skin layers and whole membrane structures as well, were obtained via an experimental method based on the obtained and computed ternary phase diagram. The nonsolvent interactions with polymer solution resulted in the different forms and properties of a surface layer of fabricated membranes that affected the overall transport of solvent and nonsolvent molecules inside and outside the bulk of the fabricated membranes. The resulting morphology and properties were confirmed using the 3D optical profiler, SEM, FT-IR and XRD methods. The effect of binary interaction parameters on the morphology of the fabricated membranes and on their separation performance was tested using water/oil mixture and gas separation. Both hydrophobic and hydrophilic properties of PVDF showed the excellent durable separation performance of the prepared membranes with 92% of oil separation and the maximum flux of 395 L h-1 m-2 along with 120 min of long-term stability. CO2 separation from H2, N2, CH4 and SF6 gases was performed to further support the effect of tuned PVDF membranes with different micro/nanostructured morphologies. The gas performance demonstrated ultrahigh permeability and a several-fold greater than the Knudsen separation factor. The results demonstrate a facile and inexpensive approach can be successfully applied for the tailoring of the PVDF membranes to predict and design the resulting membrane structure.
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Affiliation(s)
- S Ashtiani
- Department of Physical Chemistry, University of Chemistry and Technology, Prague Technická 5 16628 Prague 6 Czech Republic
| | - M Khoshnamvand
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences Beijing 100085 China.,University of Chinese Academy of Sciences Beijing 100049 China
| | - P Číhal
- Department of Physical Chemistry, University of Chemistry and Technology, Prague Technická 5 16628 Prague 6 Czech Republic
| | - M Dendisová
- Department of Physical Chemistry, University of Chemistry and Technology, Prague Technická 5 16628 Prague 6 Czech Republic
| | - A Randová
- Department of Physical Chemistry, University of Chemistry and Technology, Prague Technická 5 16628 Prague 6 Czech Republic
| | - D Bouša
- Department of Inorganic Chemistry, University of Chemistry and Technology, Prague Technická 5 16628 Prague 6 Czech Republic
| | - A Shaliutina-Kolešová
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology Zátiší 728/II 389 25 Vodňany Czech Republic
| | - Z Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology, Prague Technická 5 16628 Prague 6 Czech Republic
| | - K Friess
- Department of Physical Chemistry, University of Chemistry and Technology, Prague Technická 5 16628 Prague 6 Czech Republic
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Recent Advances in Magnetic Nanoparticles and Nanocomposites for the Remediation of Water Resources. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6040049] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Water resources are of extreme importance for both human society and the environment. However, human activity has increasingly resulted in the contamination of these resources with a wide range of materials that can prevent their use. Nanomaterials provide a possible means to reduce this contamination, but their removal from water after use may be difficult. The addition of a magnetic character to nanomaterials makes their retrieval after use much easier. The following review comprises a short survey of the most recent reports in this field. It comprises five sections, an introduction into the theme, reports on single magnetic nanoparticles, magnetic nanocomposites containing two of more nanomaterials, magnetic nanocomposites containing material of a biologic origin and finally, observations about the reported research with a view to future developments. This review should provide a snapshot of developments in what is a vibrant and fast-moving area of research.
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Li L, Han S, Zhao S, Li X, Liu B, Liu Y. Chitosan modified metal–organic frameworks as a promising carrier for oral drug delivery. RSC Adv 2020; 10:45130-45138. [PMID: 35516251 PMCID: PMC9058666 DOI: 10.1039/d0ra08459j] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 11/27/2020] [Indexed: 12/11/2022] Open
Abstract
The drug delivery system of CS-MOF@5-FU was developed to achieve oral administration of 5-FU.
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Affiliation(s)
- Li Li
- School of Pharmacy
- Liaoning University
- Shenyang
- China
- Judicial Expertise Center
| | - Shasha Han
- School of Pharmacy
- Liaoning University
- Shenyang
- China
| | - Sengqun Zhao
- School of Pharmacy
- Liaoning University
- Shenyang
- China
| | - Xurui Li
- School of Pharmacy
- Liaoning University
- Shenyang
- China
| | - Bingmi Liu
- School of Pharmacy
- Liaoning University
- Shenyang
- China
- Judicial Expertise Center
| | - Yu Liu
- School of Pharmacy
- Liaoning University
- Shenyang
- China
- Judicial Expertise Center
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