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Zhakin AI, Kuz’ko AE, Kuz’menko AP, Tan MM. A Study of the Electrical Conductivity of Magnetic Fluids. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2023. [DOI: 10.3103/s1068375523010155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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2
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Bozoglu S, Arvas MB, Varlı HS, Ucar B, Acar T, Karatepe N. Agglomerated serum albumin adsorbed protocatechuic acid coated superparamagnetic iron oxide nanoparticles as a theranostic agent. NANOTECHNOLOGY 2023; 34:145602. [PMID: 36623313 DOI: 10.1088/1361-6528/acb15b] [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: 09/09/2022] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
Iron oxide nanoparticles have been one of the most widely used nanomaterials in biomedical applications. However, the incomplete understanding of the toxicity mechanisms limits their use in diagnosis and treatment processes. Many parameters are associated with their toxicity such as size, surface modification, solubility, concentration and immunogenicity. Further research needs to be done to address toxicity-related concerns and to increase its effectiveness in various applications. Herein, colloidally stable nanoparticles were prepared by coating magnetic iron oxide nanoparticles (MIONPs) with protocatechuic acid (PCA) which served as a stabilizer and a linkage for a further functional layer. A new perfusion agent with magnetic imaging capability was produced by the adsorption of biocompatible passivating agent macro-aggregated albumin (MAA) on the PCA-coated MIONPs. PCA-coated MIONPs were investigated using infrared spectroscopy, thermogravimetric analysis and dynamic light scattering while adsorption of MAA was analysed by transmission electron microscopy, Fourier-transform infrared spectroscopy and x-ray diffraction methods. Magnetic measurements of samples indicated that all samples showed superparamagnetic behaviour. Cytotoxicity results revealed that the adsorption of MAA onto PCA-coated MIONPs provided an advantage by diminishing their toxicity against the L929 mouse fibroblast cell line compared to bare Fe3O4.
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Affiliation(s)
- Serdar Bozoglu
- Institute of Energy, Renewable Energy Division, Istanbul Technical University, Istanbul, Turkey
| | - Melih Besir Arvas
- Department of Chemistry, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Hanife Sevgi Varlı
- Science and Technology Application and Research Center, Yildiz Technical University, Istanbul, Turkey
| | - Burcu Ucar
- Department of Biomedical Engineering, Faculty of Engineering and Architecture, Istanbul Arel University, Istanbul, Turkey
| | - Tayfun Acar
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Nilgün Karatepe
- Institute of Energy, Renewable Energy Division, Istanbul Technical University, Istanbul, Turkey
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3
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Masuku M, Ouma L, Sanni S, Pholosi A. Optimization studies of BTX removal by magnetite coated oleic acid obtained from microwave-assisted synthesis using response surface methodology. Sci Rep 2022; 12:18609. [PMID: 36329092 PMCID: PMC9633638 DOI: 10.1038/s41598-022-22716-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022] Open
Abstract
Benzene, toluene and xylene (BTX) are volatile organic compounds released into the environment, that require urgent removal to avoid adverse health effects. In this work, the modelling and optimization of the preparation factors for magnetite coated oleic acid (MNP-OA) composite from microwave synthesis using response surface methodology were conducted to maximize BTX removal, and iron content. The influence of five crucial preparation variables: the Fe3+/Fe2+ solution volumes, microwave power, volume of ammonia water (VAW), reaction time and volume of oleic acid (VOA) on the iron content (% Fe), and BTX adsorption capacity were investigated. The analysis of variance results revealed that VOA and VAW were the most influential factors for high % Fe content, and improved BTX removal. The % Fe, and BTX adsorption capacity for MNP-OA composite at optimized experimental conditions were estimated to be 85.57%, 90.02 mg/g (benzene), 90.07 mg/g (toluene), and 96.31 mg/g (xylene).
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Affiliation(s)
- Makhosazana Masuku
- grid.442351.50000 0001 2150 8805Biosorption and Water Treatment Research Laboratory, Vaal University of Technology, Private Bag X021, Vanderbijlpark, 1900 South Africa
| | - Linda Ouma
- grid.494616.80000 0004 4669 2655Department of Science, Technology and Engineering, Kibabii University, P. O. Box 1699, Bungoma, 50200 Kenya
| | - Saheed Sanni
- grid.442351.50000 0001 2150 8805Biosorption and Water Treatment Research Laboratory, Vaal University of Technology, Private Bag X021, Vanderbijlpark, 1900 South Africa
| | - Agnes Pholosi
- grid.442351.50000 0001 2150 8805Biosorption and Water Treatment Research Laboratory, Vaal University of Technology, Private Bag X021, Vanderbijlpark, 1900 South Africa
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Nassar HN, Rabie AM, Abu Amr SS, El-Gendy NS. Kinetic and statistical perspectives on the interactive effects of recalcitrant polyaromatic and sulfur heterocyclic compounds and in-vitro nanobioremediation of oily marine sediment at microcosm level. ENVIRONMENTAL RESEARCH 2022; 209:112768. [PMID: 35085558 DOI: 10.1016/j.envres.2022.112768] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/10/2022] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
A halotolerant biosurfactant producer Pseudomonas aeruginosa strain NSH3 (NCBI Gene Bank Accession No. MN149622) was isolated to degrade high concentrations of recalcitrant polyaromatic hydrocarbons (PAHs) and polyaromatic heterocyclic sulfur compounds (PASHs). In biphasic batch bioreactors, the biodegradation and biosurfactant-production activities of NSH3 have been significantly enhanced (p < 0.0001) by its decoration with eco-friendly prepared magnetite nanoparticles (MNPs). On an artificially contaminated sediment microcosm level, regression modeling and statistical analysis based on a 23 full factorial design of experiments were trendily applied to provide insights into the interactive impacts of such pollutants. MNPs-coated NSH3 were also innovatively applied for nanobioremediation (NBR) of in-vitro diesel oil-polluted sediment microcosms. Gravimetric, chromatographic, and microbial respiratory analyses proved the significantly enhanced biodegradation capabilities of MNPs-coated NSH3 (p < 0.001) and the complete mineralization of various recalcitrant diesel oil components. Kinetic analyses showed that the biodegradation of iso- and n-alkanes was best fitted with a second-order kinetic model equation. Nevertheless, PAHs and PASHs in biphasic batch bioreactors and sediment microcosms followed the first-order kinetic model equation. Sustainable NBR overcome the toxicity of low molecular weight hydrocarbons, mass transfer limitation, and steric hindrance of hydrophobic recalcitrant high molecular weight hydrocarbons and alkylated polyaromatic compounds.
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Affiliation(s)
- Hussein N Nassar
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, PO, 11727, Egypt; Center of Excellence, October University for Modern Sciences and Arts (MSA), 6(th) of October City, Giza, PO, 12566, Egypt
| | - Abdelrahman M Rabie
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, PO, 11727, Egypt
| | - Salem S Abu Amr
- Department of Chemical and Environmental Engineering, Faculty of Engineering, Karabuk University, Demir Campus, Karabuk, PO, 78050, Turkey
| | - Nour Sh El-Gendy
- Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, PO, 11727, Egypt; Center of Excellence, October University for Modern Sciences and Arts (MSA), 6(th) of October City, Giza, PO, 12566, Egypt.
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5
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e Castro LL, Amorim CCC, Miranda JPV, Cassiano TDSA, Paula FLDO. The role of small separation interactions in ferrofluid structure. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Álvarez E, Estévez M, Gallo-Cordova A, González B, Castillo RR, Morales MDP, Colilla M, Izquierdo-Barba I, Vallet-Regí M. Superparamagnetic Iron Oxide Nanoparticles Decorated Mesoporous Silica Nanosystem for Combined Antibiofilm Therapy. Pharmaceutics 2022; 14:163. [PMID: 35057058 PMCID: PMC8778149 DOI: 10.3390/pharmaceutics14010163] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 02/01/2023] Open
Abstract
A crucial challenge to face in the treatment of biofilm-associated infection is the ability of bacteria to develop resistance to traditional antimicrobial therapies based on the administration of antibiotics alone. This study aims to apply magnetic hyperthermia together with controlled antibiotic delivery from a unique magnetic-responsive nanocarrier for a combination therapy against biofilm. The design of the nanosystem is based on antibiotic-loaded mesoporous silica nanoparticles (MSNs) externally functionalized with a thermo-responsive polymer capping layer, and decorated in the outermost surface with superparamagnetic iron oxide nanoparticles (SPIONs). The SPIONs are able to generate heat upon application of an alternating magnetic field (AMF), reaching the temperature needed to induce a change in the polymer conformation from linear to globular, therefore triggering pore uncapping and the antibiotic cargo release. The microbiological assays indicated that exposure of E. coli biofilms to 200 µg/mL of the nanosystem and the application of an AMF (202 kHz, 30 mT) decreased the number of viable bacteria by 4 log10 units compared with the control. The results of the present study show that combined hyperthermia and antibiotic treatment is a promising approach for the effective management of biofilm-associated infections.
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Affiliation(s)
- Elena Álvarez
- Departamento de Química en Ciencias Farmacéuticas, Faculdad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, 28040 Madrid, Spain; (E.Á.); (M.E.); (B.G.); (R.R.C.)
- CIBER de Bioingeniería Biomateriales y Nanomedicina CIBER-BBN, 28029 Madrid, Spain
| | - Manuel Estévez
- Departamento de Química en Ciencias Farmacéuticas, Faculdad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, 28040 Madrid, Spain; (E.Á.); (M.E.); (B.G.); (R.R.C.)
| | - Alvaro Gallo-Cordova
- Instituto de Ciencia de Materiales de Madrid, ICMM/CSIC, Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain; (A.G.-C.); (M.d.P.M.)
| | - Blanca González
- Departamento de Química en Ciencias Farmacéuticas, Faculdad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, 28040 Madrid, Spain; (E.Á.); (M.E.); (B.G.); (R.R.C.)
- CIBER de Bioingeniería Biomateriales y Nanomedicina CIBER-BBN, 28029 Madrid, Spain
| | - Rafael R. Castillo
- Departamento de Química en Ciencias Farmacéuticas, Faculdad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, 28040 Madrid, Spain; (E.Á.); (M.E.); (B.G.); (R.R.C.)
- CIBER de Bioingeniería Biomateriales y Nanomedicina CIBER-BBN, 28029 Madrid, Spain
| | - María del Puerto Morales
- Instituto de Ciencia de Materiales de Madrid, ICMM/CSIC, Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain; (A.G.-C.); (M.d.P.M.)
| | - Montserrat Colilla
- Departamento de Química en Ciencias Farmacéuticas, Faculdad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, 28040 Madrid, Spain; (E.Á.); (M.E.); (B.G.); (R.R.C.)
- CIBER de Bioingeniería Biomateriales y Nanomedicina CIBER-BBN, 28029 Madrid, Spain
| | - Isabel Izquierdo-Barba
- Departamento de Química en Ciencias Farmacéuticas, Faculdad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, 28040 Madrid, Spain; (E.Á.); (M.E.); (B.G.); (R.R.C.)
- CIBER de Bioingeniería Biomateriales y Nanomedicina CIBER-BBN, 28029 Madrid, Spain
| | - María Vallet-Regí
- Departamento de Química en Ciencias Farmacéuticas, Faculdad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, 28040 Madrid, Spain; (E.Á.); (M.E.); (B.G.); (R.R.C.)
- CIBER de Bioingeniería Biomateriales y Nanomedicina CIBER-BBN, 28029 Madrid, Spain
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7
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Masuku M, Ouma L, Pholosi A. Microwave assisted synthesis of oleic acid modified magnetite nanoparticles for benzene adsorption. ACTA ACUST UNITED AC 2021. [DOI: 10.1016/j.enmm.2021.100429] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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8
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Study of Nanostructural, Electrical, and Optical Properties of Mn0.6Fe2.4O4–PEG/PVP/PVA Ferrogels for Optoelectronic Applications. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01630-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Fernández L, González-Rodríguez J, Gamallo M, Vargas-Osorio Z, Vázquez-Vázquez C, Piñeiro Y, Rivas J, Feijoo G, Moreira MT. Iron oxide-mediated photo-Fenton catalysis in the inactivation of enteric bacteria present in wastewater effluents at neutral pH. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115181. [PMID: 32683092 DOI: 10.1016/j.envpol.2020.115181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/03/2020] [Accepted: 07/03/2020] [Indexed: 06/11/2023]
Abstract
The pressure on natural water resources associated with increasing water scarcity highlights the value of using reclaimed water through the development of efficient and environmentally friendly treatment technologies. In this work, the use of magnetic nanoparticles in photo-Fenton catalysis for water disinfection was considered to inactivate natural enteric bacteria present in municipal wastewater effluents under white light and neutral pH. The most recommended ranges were evaluated in key variables such as the loading and composition of nanoparticles (NPs), hydrogen peroxide (H2O2) concentration, the light source (UV and visible) and treatment time were evaluated in wastewater disinfection expressed in terms of total coliforms and Escherichia coli colony forming units (CFU). The magnetic separation of NPs allowed the disinfection process to be carried out in different cycles, facilitating the recovery of the nanocatalyst and avoiding its discharge with the treated effluent.
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Affiliation(s)
- L Fernández
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - J González-Rodríguez
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - M Gamallo
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Z Vargas-Osorio
- Laboratory of Magnetism and Nanotechnology, Departments of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Faculty of Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain; Department of Biomaterials, Centre for Functional and Surface Functionalized Glass (FUNGLASS), Alexander Dubcek University of Trencin, Slovakia
| | - C Vázquez-Vázquez
- Laboratory of Magnetism and Nanotechnology, Departments of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Faculty of Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Y Piñeiro
- Laboratory of Magnetism and Nanotechnology, Departments of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Faculty of Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - J Rivas
- Laboratory of Magnetism and Nanotechnology, Departments of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Faculty of Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - G Feijoo
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - M T Moreira
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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10
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Mikhaylov VI, Kryuchkova AV, Sitnikov PA, Koval LA, Zemskaya NV, Krivoshapkina EF, Krivoshapkin PV. Magnetite Hydrosols with Positive and Negative Surface Charge of Nanoparticles: Stability and Effect on the Lifespan of Drosophila melanogaster. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4405-4415. [PMID: 32243164 DOI: 10.1021/acs.langmuir.0c00605] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This paper presents sols of uncoated and citric acid-coated Fe3O4 nanoparticles obtained by a combination of coprecipitation and sonochemistry methods. A stable concentrated CA-Fe3O4 sol synthesized by a combination of coprecipitation with an inconvenient Fe2+/Fe3+ ratio, modification with citric acid and US treatment was obtained for the first time. A comparative analysis of the composition and morphology of nanoparticles was performed. The sols are oppositely charged and behave as a typical ferrofluid. The citric acid-modified sol is aggregatively stable over wider ranges of pH and electrolyte concentration, but it becomes less stable with the temperature increase. DLVO calculations showed that steric repulsion forces are a vital factor contributing to increased aggregative stability in a modified Fe3O4 sol. The experiments have revealed the magneto-optical effect in a modified Fe3O4 sol with an electrolyte concentration of 0.025-0.075 M caused by a high potential barrier and a deep secondary minimum in pairwise interaction curves. The "pK spectroscopy" mathematical model to describe the potentiometric curves of synthesized magnetite sols was used for the first time. According to potentiometric titration, the ions of the electrolyte practically do not contribute to formation of a surface charge in modified Fe3O4 with a change in pH due to blocking the magnetite surface by citric acid molecules. Drosophila melanogaster was used as a model to show that Fe3O4 in chronic exposure has a low toxic effect.
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Affiliation(s)
- Vasily I Mikhaylov
- Institute of Chemistry, Federal Research Centre, Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, 48 Pervomayskaya Street, 167000 Syktyvkar, Russia
| | | | - Petr A Sitnikov
- Institute of Chemistry, Federal Research Centre, Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, 48 Pervomayskaya Street, 167000 Syktyvkar, Russia
| | - Liubov A Koval
- Institute of Biology, Federal Research Centre, Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, 28 Kommunisticheskaya Street, 167982 Syktyvkar, Russia
| | - Nadezhda V Zemskaya
- Institute of Biology, Federal Research Centre, Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, 28 Kommunisticheskaya Street, 167982 Syktyvkar, Russia
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11
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Chauhan A, Kumar R, Singh P, Jha SK, Kuanr BK. RF hyperthermia by encapsulated Fe3O4 nanoparticles induces cancer cell death via time-dependent caspase-3 activation. Nanomedicine (Lond) 2020; 15:355-379. [DOI: 10.2217/nnm-2019-0187] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Aim: To explore the optimum temperature for cancer cell death using magnetic hyperthermia (MH), which in turn will affect the mode of cell death. Method: The focus of this study is to improve upon the existing methodology for the synthesis of chitosan encapsulated Fe3O4. MH was done at different temperatures. The cell death pathway was explored using flow cytometry and western blot. Results: Coated Fe3O4 exhibited low cytotoxicity, high stability and heating efficiency. MH at 43°C was the optimum temperature for robust cell death. Cell death pathway suggested that during the initial stages of recovery, apoptosis was the main mode of cell death. While at later stages, major apoptosis and minor necrosis were observed. Conclusion: It is important to find out the long-term effect of hyperthermia treatment on cancer cells and their consequences on surrounding healthy cells.
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Affiliation(s)
- Anjali Chauhan
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Ravi Kumar
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pooja Singh
- National Institute of Plant Genome Research, New Delhi, 110067, India
| | - Sushil K Jha
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Bijoy Kumar Kuanr
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India
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12
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Chen T, Zheng Y, Lu Z, Xu T, Liu Y, Meng X, Xu G, Han G. Hydrothermal synthesis and photocatalytic activity of butterfly-like CaTiO 3 dendrites with dominant {101} facets. NANOTECHNOLOGY 2019; 30:475709. [PMID: 31416052 DOI: 10.1088/1361-6528/ab3baa] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Novel butterfly-like CaTiO3 dendrites dominantly bounded by {101} facets have been synthesized via a conventional hydrothermal by using tetramethylammonium hydroxide (TMAH) as a mineralizer and surface modifier. The wing-branches of the butterfly-like CaTiO3 dendrites are composed of primary block tetragonal plates with dominant {101} facets overlapping and ranking around the stem of 〈131〉 directions in the same plane belonging to the group of {101}. With the basis of the experimental results and the lattice structure, a possible formation mechanism of the butterfly-like CaTiO3 dendrites has been discussed and proposed. The preferential adsorption of the organic [Formula: see text] ions released by the ionization of TMAH on {101} planes suppresses the deposition of the calcium titanate species on {101} planes, which induces the formation of the primary block tetragonal plates and their overlapping as well as ranking around 〈131〉 direction along {101} planes, resulting in the butterfly-like CaTiO3 dendrites bounded with {101} facets. The investigation on the degradation of rhodamine-B demonstrates, due to the dominant exposition of the {101} facets, the butterfly-like CaTiO3 dendrites display superior photocatalytic activity of more than four time that of CaTiO3 microcuboids bounded with smart {101} and (010) facets.
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Affiliation(s)
- Tongzhou Chen
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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13
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Zhong Y, Mao Y, Shi S, Wan M, Ma C, Wang S, Chen C, Zhao D, Zhang N. Fabrication of Magnetic Pd/MOF Hollow Nanospheres with Double-Shell Structure: Toward Highly Efficient and Recyclable Nanocatalysts for Hydrogenation Reaction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32251-32260. [PMID: 31407583 DOI: 10.1021/acsami.9b07864] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
MNPs@MOF catalysts obtained by encapsulating metal nanoparticles (NPs) into metal-organic frameworks (MOFs) show fascinating performance in heterogeneous catalysis. The improvement of catalytic activity and reusability of MNPs@MOF catalysts has been a great challenge for a long time. Herein, we demonstrate well-designed Pd/MOFs, featuring hollow double-shell structure and magnetic property, exhibiting high reusability, efficient catalytic activity, and size selectivity for hydrogenation reaction. The as-synthesized Pd/MOF, denoted as Void nFe3O4@Pd/ZIF-8@ZIF-8, possesses diverse functional structural features. The hollow cavity can improve mass transfer; superparamagnetic Fe3O4 NPs embedded in the inner MOF shell can enhance the separation and recyclability; Pd NPs are highly dispersed in the matrix of the inner MOF shell, and the outer MOF shell acts as a protector to prevent the leaching of Pd NPs and a sieve to achieve size selectivity. As a proof of concept, the Void nFe3O4@Pd/ZIF-8@ZIF-8 catalyst exhibited excellent performance for the hydrogenation of styrene at room temperature. The activity only reduced 10% after 20 cycles for the higher conversions (>90%), and the lower conversion only decreased 3.6% (from 32.5 to 28.9% conversion) after twenty consecutive cycles, indicating the good and intrinsic reusability of the catalyst. The proposed structure in this work provides a strategy to effectively improve the reusability of MNPs@MOF catalysts, which would increase their practical applications.
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Affiliation(s)
- Yicheng Zhong
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Yuelin Mao
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Shunli Shi
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Mingming Wan
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Chong Ma
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Shuhua Wang
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Chao Chen
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Dan Zhao
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Ning Zhang
- Key Laboratory of Jiangxi Province for Environment and Energy, College of Chemistry , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
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14
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Ganguly M, Ariya PA. Novel Technology for the Removal of Brilliant Green from Water: Influence of Post-Oxidation, Environmental Conditions, and Capping. ACS OMEGA 2019; 4:12107-12120. [PMID: 31460324 PMCID: PMC6682118 DOI: 10.1021/acsomega.9b00757] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 05/20/2019] [Indexed: 05/24/2023]
Abstract
Chemical dyes are used in a wide range of anthropogenic activities and are generally not biodegradable. Hence, sustainable recycling processes are needed to avoid their accumulation in the environment. A one-step synthesis of Fecore-maghemiteshell (Fe-MM) for facile, instantaneous, cost-effective, sustainable, and efficient removal of brilliant green (BG) dye from water has been reported here. The homogenous and monolayer type of adsorption is, to our knowledge, the most efficient, with a maximum uptake capacity of 1000 mg·g-1, for BG on Fe-MM. This adsorbent was shown to be efficient in occurring in time-scales of seconds and to be readily recyclable (ca. 91%). As iron/iron oxide possesses magnetic behavior, a strong magnet could be used to separate Fe-MM coated with BG. Thus, the recycling process required a minimum amount of energy. Capping Fe-MM by hydrophilic clay minerals further enhanced the BG uptake capacity, by reducing unwanted aggregation. Interestingly, capping the adsorbent by hydrophobic plastic (low-density polyethylene) had a completely inverse effect on clay minerals. BG removal using this method is found to be quite selective among the five common industrial dyes tested in this study. To shed light on the life cycle analysis of the composite in the environment, the influence of selected physicochemical factors (T, pH, hν, O3, and NO2) was examined, along with four types of water samples (melted snow, rain, river, and tap water). To evaluate the potential limitations of this technique, because of likely competitive reactions with metal ion contaminants in aquatic systems, additional experiments with 13 metal ions were performed. To decipher the adsorption mechanism, we deployed four reducing agents (NaBH4, hydrazine, LiAlH4, and polyphenols in green tea) and NaBH4, exclusively, favored the generation of an efficient adsorbent via aerial oxidation. The drift of electron density from electron-rich Fecore to maghemite shells was attributed to be responsible for the electrostatic adsorption of N+ in BG toward Fe-MM. This technology is deemed to be environmentally sustainable in environmental remediation, namely, in waste management protocol.
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Affiliation(s)
- Mainak Ganguly
- Department
of Atmospheric and Oceanic Sciences, McGill
University, Montreal, Quebec H3A 0B9, Canada
| | - Parisa A. Ariya
- Department
of Atmospheric and Oceanic Sciences, McGill
University, Montreal, Quebec H3A 0B9, Canada
- Department
of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
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15
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Hassani A, Karaca C, Karaca S, Khataee A, Açışlı Ö, Yılmaz B. Enhanced removal of basic violet 10 by heterogeneous sono-Fenton process using magnetite nanoparticles. ULTRASONICS SONOCHEMISTRY 2018; 42:390-402. [PMID: 29429684 DOI: 10.1016/j.ultsonch.2017.11.036] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/25/2017] [Accepted: 11/25/2017] [Indexed: 06/08/2023]
Abstract
The removal of basic violet 10 (BV10), which is known as a cationic dye, from aqueous solution was studied by employing a heterogeneous sono-Fenton process over the nano-sized magnetite (Fe3O4) which had been prepared by the milling of magnetite mineral using a high-energy planetary ball milling process. The magnetite samples were characterized using the X-ray diffraction (XRD), high resolution scanning electron microscopy (HR-SEM), energy-dispersive X-ray spectroscopy (EDX), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FTIR), and inductively couple plasma mass spectrometer (ICP-MS). It was found that the catalytic activity of the ball-milled magnetite sample was enhanced along with the improvement in its physicochemical properties; also, the ball-milled magnetite of 6 h displayed the highest catalytic activity in BV10 removal by the heterogeneous sono-Fenton process as compared with that for 4 h (66.12% after 120 min) and 2 h (48% after 120 min).The effect of operational parameters, namely, pH solution, catalyst dosage, the initial H2O2 concentration, ultrasonic power and the initial BV10 concentration, on the removal efficiency (RE%) of BV10 was investigated. The optimum conditions for the BV10 RE% were: the pH value of 3, the catalyst dosage of 1.5 g L-1, the initial H2O2 concentration of 36 mM, the ultrasonic power of 450 W L-1, and the initial BV10 concentration of 30 mg L-1. The RE% of BV10 was 75.94% at these conditions after the reaction time of 120 min. The trapping experiments revealed that OH radicals were the dominant oxidative species, but O2-/HO2 radicals also had a partial role in the removal of BV10.The reusability of the magnetite nanoparticles revealed about 28% decrease in the removal efficiency within five consecutive runs. The results obtained through GC-MS analysis also confirmed the efficient removal of BV10 molecules in the aqueous solution during the process.
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Affiliation(s)
- Aydin Hassani
- Department of Materials Science and Nanotechnology Engineering, Faculty of Engineering, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey; Department of Chemistry, Faculty of Science, Atatürk University, 25240 Erzurum, Turkey
| | - Canan Karaca
- Department of Chemistry, Faculty of Science, Atatürk University, 25240 Erzurum, Turkey
| | - Semra Karaca
- Department of Chemistry, Faculty of Science, Atatürk University, 25240 Erzurum, Turkey.
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Materials Science and Nanotechnology Engineering, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey.
| | - Özkan Açışlı
- Department of Petroleum and Natural Gas Engineering, Oltu Faculty of Earth Sciences, Atatürk University, 25240 Erzurum, Turkey
| | - Bilal Yılmaz
- Department of Analytical Chemistry, Faculty of Pharmacy, Atatürk University 25240 Erzurum, Turkey
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Legutko P, Jakubek T, Kaspera W, Stelmachowski P, Sojka Z, Kotarba A. Strong Enhancement of deSoot Activity of Transition Metal Oxides by Alkali Doping: Additive Effects of Potassium and Nitric Oxide. Top Catal 2016. [DOI: 10.1007/s11244-016-0727-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Iyengar SJ, Joy M, Mohamed AP, Samanta S, Ghosh CK, Ghosh S. Fabrication of magnetite nanocrystals in alcohol/water mixed solvents: catalytic and colloid property evaluation. RSC Adv 2016. [DOI: 10.1039/c6ra11225k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Size tailoring in alcohol–water mixed solvents produces small magnetite nanocrystals with appreciably high catalytic activities that form ultrastable colloids when suspended in water.
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Affiliation(s)
- Srividhya J. Iyengar
- Project Management Division
- CSIR-Central Glass & Ceramics Research Institute
- Kolkata-700032
- India
| | - Mathew Joy
- Project Management Division
- CSIR-Central Glass & Ceramics Research Institute
- Kolkata-700032
- India
| | - A. Peer Mohamed
- Functional Materials Section (MSTD)
- CSIR-National Institute for Interdisciplinary Science & Technology (NIIST)
- Trivandrum-695019
- India
| | - Swati Samanta
- Material Characterization & Instrumentation Division
- CSIR-Central Glass & Ceramic Research Institute
- Kolkata-700032
- India
| | - Chandan Kumar Ghosh
- School of Material Science & Nanotechnology
- Jadavpur University
- Kolkata-700032
- India
| | - Swapankumar Ghosh
- Project Management Division
- CSIR-Central Glass & Ceramics Research Institute
- Kolkata-700032
- India
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