1
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Gazil O, Alonso Cerrón-Infantes D, Virgilio N, Unterlass MM. Hydrothermal synthesis of metal nanoparticles@hydrogels and statistical evaluation of reaction conditions' effects on nanoparticle morphologies. NANOSCALE 2024; 16:17778-17792. [PMID: 39238371 PMCID: PMC11377975 DOI: 10.1039/d4nr00581c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 07/22/2024] [Indexed: 09/07/2024]
Abstract
We report a facile green hydrothermal synthesis (HTS) of monoliths of hydrogels decorated with noble metal nanoparticles (NPs). The one-pot approach requires solely water, a polysaccharide able to form a hydrogel, and a salt precursor (Mx+-containing) for the metal NPs. The polysaccharide fulfills three roles: (i) it acts as the reducing agent of Mx+ to M0 under hydrothermal conditions, (ii) it stabilizes NPs surfaces, and (iii) it forms a hydrogel scaffold in which the metal NPs are embedded. The NPs' localization in the hydrogel can be controlled through the gelation mechanism. Specifically, the NPs can either be located on and slightly under the surface of the hydrogel monoliths or in the volume. The former is found when a hydrogel monolith is crosslinked prior to HTS. The latter is observed when the HTS reaction mixture contains a polysaccharide dissolved in H2O, which forms a hydrogel upon cooling. Furthermore, we studied the influence of HTS conditions on NP shapes. To find significant levers towards morphological control, a set of HTS experiments featuring broad ranges of reaction conditions was performed. Subsequently, we employed statistical analyses with multivariate regression fits to evaluate synthesis parameter effects. Thereby, we can link the synthesis parameters of temperature, time, precursor concentration, heating rate, choice of metallic precursor, and type of biopolymer, to morphology descriptors such as diameter, circularity, and polydispersity index. The presented approach is in fine compatible with broad arrays of NPs and can in principle be modified for different chemistries, thereby providing a tool for quantitatively assessing morphological impacts of reaction parameters.
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Affiliation(s)
- Olivier Gazil
- Universität Konstanz, Department of Chemistry, Solid State Chemistry, Universitaetsstrasse 10, 78464 Konstanz, Germany.
- CREPEC, Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079 Succursale Centre-Ville, Montréal, Québec H3C 3A7, Canada
| | - D Alonso Cerrón-Infantes
- Universität Konstanz, Department of Chemistry, Solid State Chemistry, Universitaetsstrasse 10, 78464 Konstanz, Germany.
- CeMM-Research Center for Molecular Medicine of the Austrian Academy of Sciences, Lazarettgasse 14, AKH BT25.3, 1090 Vienna, Austria
| | - Nick Virgilio
- CREPEC, Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079 Succursale Centre-Ville, Montréal, Québec H3C 3A7, Canada
| | - Miriam M Unterlass
- CREPEC, Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079 Succursale Centre-Ville, Montréal, Québec H3C 3A7, Canada
- CeMM-Research Center for Molecular Medicine of the Austrian Academy of Sciences, Lazarettgasse 14, AKH BT25.3, 1090 Vienna, Austria
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2
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Dzulkharnien NSF, Rohani R, Tan Kofli N, Mohd Kasim NA, Abd Muid S, Patrick M, Mohd Fauzi NA, Alias H, Ahmad Radzuan H. Enhanced binding interaction and antibacterial inhibition for nanometal oxide particles activated with Aloe Vulgarize through one-pot ultrasonication techniques. Bioorg Chem 2024; 150:107513. [PMID: 38905888 DOI: 10.1016/j.bioorg.2024.107513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/23/2024]
Abstract
The interaction of green zinc oxide nanoparticles (ZnO NPs) with bacterial strains are still scarcely reported. This work was conducted to study the green-one-pot-synthesized ZnO NPs from the Aloe Vulgarize (AV) leaf peel extract assisted with different sonication techniques followed by the physicochemical, biological activities and molecular docking studies. The NPs structure was analyzed using FTIR, UV-vis and EDX. The morphology, particle size and crystallinity of ZnO NPs were identified using FESEM and XRD. It was found that the formed flower-like structure with sharp edge and fine size of particulates in ZnO NPs/AV could enhance the bacterial inhibition. The minimum inhibitory concentration (MIC) for all the tested bacterial strains is at 3.125 µg/ml and the bacterial growth curve are dependent on the ZnO NPs dosage. The results of disc diffusion revealed that the ZnO NPs/AV possess better antibacterial effect with bigger ZOI due to the presence of AV active ingredient. The molecular docking between active ingredients of AV in the NPs with the protein of IFCM and 1MWU revealed that low binding energy (Ebind = -6.56 kcal/mol and -8.99 kcal/mol, respectively) attributes to the excessive hydrogen bond from AV that highly influenced their interaction with the amino acid of the selected proteins. Finally, the cytotoxicity test on the biosynthesized ZnO NPs with concentration below 20 µg/ml are found nontoxic on the HDF cell. Overall, ZnO NPs/20 % AV (probe sonication) is considered as the best synthesis option due to its efficient one-pot method, short sonication time but own the best antibacterial effect.
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Affiliation(s)
- Nur Syafiqah Farhanah Dzulkharnien
- Department of Chemical & Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Rosiah Rohani
- Department of Chemical & Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia; Research Centre for Sustainable Process Technology, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia.
| | - Noorhisham Tan Kofli
- Department of Chemical & Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Noor Alicezah Mohd Kasim
- Faculty of Medicine, Universiti Teknologi Mara Selangor Branch, Sungai Buloh Campus, 47000, Sungai Buloh, Selangor, Malaysia
| | - Suhaila Abd Muid
- Faculty of Medicine, Universiti Teknologi Mara Selangor Branch, Sungai Buloh Campus, 47000, Sungai Buloh, Selangor, Malaysia
| | - Melonney Patrick
- Faculty of Medicine, Universiti Teknologi Mara Selangor Branch, Sungai Buloh Campus, 47000, Sungai Buloh, Selangor, Malaysia
| | - Noor Akhmazillah Mohd Fauzi
- Department of Chemical Engineering Technology, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, 86400, Johor, Malaysia
| | - Hajar Alias
- Department of Chemical Engineering, Faculty of Chemical Engineering and Natural Resources, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Husna Ahmad Radzuan
- Department of Chemical & Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
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3
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Shoudho K, Uddin S, Rumon MMH, Shakil MS. Influence of Physicochemical Properties of Iron Oxide Nanoparticles on Their Antibacterial Activity. ACS OMEGA 2024; 9:33303-33334. [PMID: 39130596 PMCID: PMC11308002 DOI: 10.1021/acsomega.4c02822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 08/13/2024]
Abstract
The increasing occurrence of infectious diseases caused by antimicrobial resistance organisms urged the necessity to develop more potent, selective, and safe antimicrobial agents. The unique magnetic and tunable properties of iron oxide nanoparticles (IONPs) make them a promising candidate for different theragnostic applications, including antimicrobial agents. Though IONPs act as a nonspecific antimicrobial agent, their antimicrobial activities are directly or indirectly linked with their synthesis methods, synthesizing precursors, size, shapes, concentration, and surface modifications. Alteration of these parameters could accelerate or decelerate the production of reactive oxygen species (ROS). An increase in ROS role production disrupts bacterial cell walls, cell membranes, alters major biomolecules (e.g., lipids, proteins, nucleic acids), and affects metabolic processes (e.g., Krebs cycle, fatty acid synthesis, ATP synthesis, glycolysis, and mitophagy). In this review, we will investigate the antibacterial activity of bare and surface-modified IONPs and the influence of physiochemical parameters on their antibacterial activity. Additionally, we will report the potential mechanism of IONPs' action in driving this antimicrobial activity.
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Affiliation(s)
- Kishan
Nandi Shoudho
- Department
of Mathematics and Natural Sciences, Brac
University, Kha-224 Merul Badda, Dhaka 1212, Bangladesh
- Department
of Chemical Engineering, Bangladesh University
of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Shihab Uddin
- Department
of Bioengineering, King Fahd University
of Petroleum & Minerals, Dhahran 31261, Kingdom
of Saudi Arabia
| | - Md Mahamudul Hasan Rumon
- Department
of Mathematics and Natural Sciences, Brac
University, Kha-224 Merul Badda, Dhaka 1212, Bangladesh
| | - Md Salman Shakil
- Department
of Mathematics and Natural Sciences, Brac
University, Kha-224 Merul Badda, Dhaka 1212, Bangladesh
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4
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Vitayaya O, Zul Nehan PZ, Munazat DR, Manawan MTE, Kurniawan B. Magnetoresistance (MR) properties of magnetic materials. RSC Adv 2024; 14:18617-18645. [PMID: 38863825 PMCID: PMC11165987 DOI: 10.1039/d4ra01989j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/21/2024] [Indexed: 06/13/2024] Open
Abstract
In this review, the classification of magnetic materials exhibiting magnetoresistive properties is the focus of discussion because each material possesses different magnetic and electrical properties that influence the resulting magnetoresistance (MR) values. These properties depend on the structure and mechanism of the material. In this overview, the classification of magnetic materials with different structures is examined in several material groups, including the following: (1) perovskite structure (ABO3), (2) alloy, (3) spinel structure, and (4) Kagome magnet. This review summarizes the results of each material's properties based on experimental findings, and serves as a reference for studying the characteristics of each material.
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Affiliation(s)
| | | | | | - Maykel T E Manawan
- Research Center for Advanced Materials, BRIN Serpong 15314 Indonesia
- Faculty of Defense Technology, Indonesia Defense University Bogor 16810 Indonesia
| | - Budhy Kurniawan
- Department of Physics, Universitas Indonesia Depok 16424 Indonesia
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5
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Agarwal M, Zika A, Schweins R, Gröhn F. Controlling the Morphology in Electrostatic Self-Assembly via Light. Polymers (Basel) 2023; 16:50. [PMID: 38201714 PMCID: PMC10780651 DOI: 10.3390/polym16010050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Electrostatic self-assembly of macroions is an emerging area with great potential in the development of nanoscale functional objects, where photo-irradiation responsiveness can either elevate or suppress the self-assembly. The ability to control the size and shape of macroion assemblies would greatly facilitate the fabrication of desired nano-objects that can be harnessed in various applications such as catalysis, drug delivery, bio-sensors, and actuators. Here, we demonstrate that a polyelectrolyte with a size of 5 nm and multivalent counterions with a size of 1 nm can produce well-defined nanostructures ranging in size from 10-1000 nm in an aqueous environment by utilizing the concept of electrostatic self-assembly and other intermolecular non-covalent interactions including dipole-dipole interactions. The pH- and photoresponsiveness of polyelectrolytes and azo dyes provide diverse parameters to tune the nanostructures. Our findings demonstrate a facile approach to fabricating and manipulating self-assembled nanoparticles using light and neutron scattering techniques.
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Affiliation(s)
- Mohit Agarwal
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstr. 3, D-91058 Erlangen, Germany
- Institut Laue-Langevin, DS/LSS, 71 Avenue des Martyrs, F-38000 Grenoble, France;
| | - Alexander Zika
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstr. 3, D-91058 Erlangen, Germany
| | - Ralf Schweins
- Institut Laue-Langevin, DS/LSS, 71 Avenue des Martyrs, F-38000 Grenoble, France;
| | - Franziska Gröhn
- Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstr. 3, D-91058 Erlangen, Germany
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6
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Wang T, Zhu L, Zhu W, Kanda H. Direct synthesis of hydrogen fluoride-free multilayered Ti 3C 2/TiO 2 composite and its applications in photocatalysis. Heliyon 2023; 9:e18718. [PMID: 37554843 PMCID: PMC10405010 DOI: 10.1016/j.heliyon.2023.e18718] [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: 04/11/2023] [Revised: 07/17/2023] [Accepted: 07/25/2023] [Indexed: 08/10/2023] Open
Abstract
Ti3C2/TiO2 hybrids are environment-friendly and exhibit excellent photocatalytic and hydrogen-generating power characteristics. Herein, a novel single-step method is proposed for fabricating multilayer structures in which TiO2, generated from (NH4)2TiF6, wraps the Ti3C2 MXene by etching Ti3AlC2 with (NH4)2TiF6. The optimal reaction conditions for the etching of Ti3AlC2 with (NH4)2TiF6 were systematically studied. The phase composition, morphology, and photophysical properties of the Ti3C2/TiO2 hybrids were investigated using X-ray diffraction, field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, and UV-vis spectrophotometry. The thermal stability of the hybrids was investigated using thermogravimetric and differential thermal analyses. Along with the formation of Ti3C2 MXene, Ti3AlC2 reacted with (NH4)2TiF6 at 60 °C for 24 h to form hybrids surrounded by NH4TiOF3 crystals. Subsequent reactions of these hybrids with H3BO3 resulted in the conversion of NH4TiOF3 crystals into TiO2 and eventually into Ti3C2/TiO2 hybrids. Furthermore, the photocatalytic activity of the Ti3C2/TiO2 hybrids was measured by monitoring the photodegradation of methylene blue under ultraviolet light, which showed that the photocatalytic activity of the Ti3C2/TiO2 hybrids was higher than that of the commercial anatase TiO2 nanoparticles.
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Affiliation(s)
- Tao Wang
- Department of Materials Process Engineering, Nagoya University, Nagoya, 464-8603, Japan
| | - Li Zhu
- Department of Materials Process Engineering, Nagoya University, Nagoya, 464-8603, Japan
| | - Wanying Zhu
- Department of Materials Process Engineering, Nagoya University, Nagoya, 464-8603, Japan
| | - Hideki Kanda
- Department of Materials Process Engineering, Nagoya University, Nagoya, 464-8603, Japan
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7
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Sharifi Dehsari H, Hassanpour Amiri M, Asadi K. Solution-Processed Multiferroic Thin-Films with Large Magnetoelectric Coupling at Room-Temperature. ACS NANO 2023; 17:8064-8073. [PMID: 37067828 PMCID: PMC10173693 DOI: 10.1021/acsnano.2c09769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 04/10/2023] [Indexed: 05/10/2023]
Abstract
Experimental realization of thin films with a significant room-temperature magnetoelectric coupling coefficient, αME, in the absence of an external DC magnetic field, has been thus far elusive. Here, a large coupling coefficient of 750 ± 30 mV Oe-1 cm-1 is reported for multiferroic polymer nanocomposites (MPCs) thin-films in the absence of an external DC magnetic field. The MPCs are based on PMMA-grafted cobalt-ferrite nanoparticles uniformly dispersed in the piezoelectric polymer poly(vinylidene fluoride-co-trifluoroethylene, P(VDF-TrFE). It is shown that nanoparticle agglomeration plays a detrimental role and significantly reduces αME. Surface functionalization of the nanoparticles by grafting a layer of poly(methyl methacrylate) (PMMA) via atom transfer radical polymerization (ATRP) renders the nanoparticle miscible with P(VDF-TRFE) matrix, thus enabling their uniform dispersion in the matrix even in submicrometer thin films. Uniform dispersion yields maximized interfacial interactions between the ferromagnetic nanoparticles and the piezoelectric polymer matrix leading to the experimental demonstration of large αME values in solution-processed thin films, which can be exploited in flexible and printable multiferroic electronic devices for sensing and memory applications.
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Affiliation(s)
| | | | - Kamal Asadi
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Centre
for Therapeutic Innovations, University
of Bath, Claverton Down, BA2 7AY Bath, United Kingdom
- Department
of Physics, University of Bath, Claverton Down, BA2 7AY Bath, United Kingdom
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8
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Liu Y, Ding Y, Sheng A, Li X, Chen J, Arai Y, Liu J. Fe(II)-Catalyzed Transformation of Ferrihydrite with Different Degrees of Crystallinity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:6934-6943. [PMID: 37078588 DOI: 10.1021/acs.est.3c00555] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Natural occurring ferrihydrite (Fh) nanoparticles have varying degrees of crystallinity, but how Fh crystallinity affects its transformation behavior remains elusive. Here, we investigated the Fe(II)-catalyzed transformation of Fh with different degrees of crystallinity (i.e., Fh-2h, Fh-12h, and Fh-85C). X-ray diffraction patterns of Fh-2h, Fh-12h, and Fh-85C exhibited two, five, and six diffraction peaks, respectively, indicating the order of crystallinity: Fh-2h < Fh-12h < Fh-85C. Fh with the lower crystallinity has a higher redox potential, corresponding to the faster Fe(II)-Fh interfacial electron transfer and Fe(III)labile production. With the increase of initial Fe(II) concentration ([Fe(II)aq]int.) from 0.2 to 5.0 mM, the transformation pathways of Fh-2h and Fh-12h change from Fh → lepidocrocite (Lp) → goethite (Gt) to Fh → Gt, but that of Fh-85C switches from Fh → Gt to Fh → magnetite (Mt). The changes are rationalized using a computational model that quantitatively describes the relationship between the free energies of formation for starting Fh and nucleation barriers of competing product phases. Gt particles from the Fh-2h transformation exhibit a broader width distribution than those from Fh-12h and Fh-85C. Uncommon hexagonal Mt nanoplates are formed from the Fh-85C transformation at [Fe(II)aq]int.= 5.0 mM. The findings are crucial to comprehensively understand the environmental behavior of Fh and other associated elements.
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Affiliation(s)
- Yuyan Liu
- The Key Laboratory of Water and Sediment Sciences, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Yuefei Ding
- The Key Laboratory of Water and Sediment Sciences, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Anxu Sheng
- The Key Laboratory of Water and Sediment Sciences, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaoxu Li
- The Key Laboratory of Water and Sediment Sciences, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Jiawei Chen
- School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
| | - Yuji Arai
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, 1102 South Goodwin Avenue, Urbana, Illinois 61801, United States
| | - Juan Liu
- The Key Laboratory of Water and Sediment Sciences, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
- International Joint Laboratory for Regional Pollution Control, Ministry of Education, College of Environmental Sciences and Engineering, Beijing 100871, China
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9
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Neumann S, Kuger L, Arlt CR, Franzreb M, Rafaja D. Influence of the hierarchical architecture of multi-core iron oxide nanoflowers on their magnetic properties. Sci Rep 2023; 13:5673. [PMID: 37029132 PMCID: PMC10082203 DOI: 10.1038/s41598-023-31294-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/09/2023] [Indexed: 04/09/2023] Open
Abstract
Magnetic properties of superparamagnetic iron oxide nanoparticles are controlled mainly by their particle size and by their particle size distribution. Magnetic properties of multi-core iron oxide nanoparticles, often called iron oxide nanoflowers (IONFs), are additionally affected by the interaction of magnetic moments between neighboring cores. The knowledge about the hierarchical structure of IONFs is therefore essential for understanding the magnetic properties of IONFs. In this contribution, the architecture of multi-core IONFs was investigated using correlative multiscale transmission electron microscopy (TEM), X-ray diffraction and dynamic light scattering. The multiscale TEM measurements comprised low-resolution and high-resolution imaging as well as geometric phase analysis. The IONFs contained maghemite with the average chemical composition [Formula: see text]-Fe[Formula: see text]O[Formula: see text]. The metallic vacancies located on the octahedral lattice sites of the spinel ferrite structure were partially ordered. Individual IONFs consisted of several cores showing frequently a specific crystallographic orientation relationship between direct neighbors. This oriented attachment may facilitate the magnetic alignment within the cores. Individual cores were composed of partially coherent nanocrystals having almost the same crystallographic orientation. The sizes of individual constituents revealed by the microstructure analysis were correlated with the magnetic particle sizes that were obtained from fitting the measured magnetization curve by the Langevin function.
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Affiliation(s)
- Stefan Neumann
- Institute of Materials Science, TU Bergakademie Freiberg, 09599, Freiberg, Germany.
| | - Laura Kuger
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Carsten-Rene Arlt
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - Matthias Franzreb
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany
| | - David Rafaja
- Institute of Materials Science, TU Bergakademie Freiberg, 09599, Freiberg, Germany
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10
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Akhtar K, Abad S, Khalid H, Zubair N, Ali Shah SS. Monodispersed fine particles of calcium oxalate: morphological dynamics with tuning of the experimental parameters. J DISPER SCI TECHNOL 2023. [DOI: 10.1080/01932691.2023.2176868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Khalida Akhtar
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
| | - Shahana Abad
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
| | - Hina Khalid
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
- Department of Chemistry, Women University Mardan, Mardan, Pakistan
| | - Naila Zubair
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
- Department of Chemistry, Women University Mardan, Mardan, Pakistan
| | - Syed Sajjad Ali Shah
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan
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11
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Shingte S, Phakatkar AH, McKiernan E, Nigoghossian K, Ferguson S, Shahbazian-Yassar R, Brougham DF. Correlating Magnetic Hyperthermia and Magnetic Resonance Imaging Contrast Performance of Cubic Iron Oxide Nanoparticles with Crystal Structural Integrity. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:10801-10810. [PMID: 36590705 PMCID: PMC9798828 DOI: 10.1021/acs.chemmater.2c00708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 07/27/2022] [Indexed: 06/17/2023]
Abstract
Magnetic iron oxide nanoparticles have multiple biomedical applications in AC-field hyperthermia and magnetic resonance imaging (MRI) contrast enhancement. Here, two cubic particle suspensions are analyzed in detail, one suspension displayed strong magnetic heating and MRI contrast efficacies, while the other responded weakly. This is despite them having almost identical size, morphology, and colloidal dispersion. Aberration-corrected scanning transmission electron microscopy, electron energy loss spectroscopy, and high-resolution transmission electron microscopy analysis confirmed that the spinel phase Fe3O4 was present in both samples and identified prominent crystal lattice defects for the weakly responding one. These are interpreted as frustrating the orientation of the moment within the cubic crystals. The relationship between crystal integrity and the moment magnitude and dynamics is elucidated for the case of fully dispersed single nanocubes, and its connection with the emergent hyperthermia and MRI contrast responses is established.
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Affiliation(s)
| | - Abhijit H. Phakatkar
- Department
of Biomedical Engineering, University of
Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Eoin McKiernan
- School
of Chemistry, University College Dublin, Dublin 4, Ireland
| | | | - Steven Ferguson
- School
of Chemical and Bioprocess Engineering, University College Dublin, Dublin 4, Ireland
| | - Reza Shahbazian-Yassar
- Department
of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, Illinois 60607-7042, United States
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12
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Yusof HM, Rahman NA, Mohamad R, Zaidan UH, Samsudin AA. Optimization of biosynthesis zinc oxide nanoparticles: Desirability-function based response surface methodology, physicochemical characteristics, and its antioxidant properties. OPENNANO 2022. [DOI: 10.1016/j.onano.2022.100106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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A recipe for optimizing TiO2 nanoparticles for drug delivery applications. OPENNANO 2022. [DOI: 10.1016/j.onano.2022.100096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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Application of nanomaterials in anaerobic digestion processes: A new strategy towards sustainable methane production. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Photocatalytic Dye Degradation and Bio-Insights of Honey-Produced α-Fe2O3 Nanoparticles. WATER 2022. [DOI: 10.3390/w14152301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Iron oxide nanoparticles are produced using simple auto combustion methods with honey as a metal-stabilizing and -reducing agent. Herein, α-Fe2O3 nanoparticles are produced using an iron nitrate precursor. These prepared samples are analyzed by an X-ray diffractometer (XRD), FTIR spectroscopy, UV-DRS, and a field-emission scanning electron microscope (FESEM) combined with energy-dispersive spectroscopy and a vibrating sample magnetometer (VSM). The XRD results confirm a rhombohedral structure with an R3c¯ space group single-phase formation of α-Fe2O3 in all samples. FESEM images reveal the different morphologies for the entire three samples. TEM analysis exhibits spherical shapes and their distribution on the surfaces. XPS spectroscopy confirms the Fe-2p and O-1s state and their valency. The VSM study shows strong ferromagnetic behavior. The prepared α-Fe2O3 nanoparticles exhibit exceptional charge carriers and radical production. The prepared sample retains excellent photocatalytic, antifungal and antibacterial activity.
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Abubakar HL, Tijani JO, Abdulkareem SA, Mann A, Mustapha S. A review on the applications of zinc tungstate (ZnWO 4) photocatalyst for wastewater treatment. Heliyon 2022; 8:e09964. [PMID: 35874051 PMCID: PMC9305394 DOI: 10.1016/j.heliyon.2022.e09964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/17/2022] [Accepted: 07/12/2022] [Indexed: 11/28/2022] Open
Abstract
The monoclinic wolframite-phase structure of ZnWO4 materials has been frequently synthesised, characterised, and applied in optical fibres, environmental decontamination, electrochemistry, photonics, catalysis, and not limited to magnetic applications. However, the problems of crystal growth conditions and mechanisms, growth, the crystal quality, stability, and the role of synthesis parameters of ZnWO4 nanoparticles remain a challenge limiting its commercial applications. This review presents recent advances of ZnWO4 as an advanced multi-functional material for Industrial wastewater treatment. The review also examines the influence of the synthesis parameters on the properties of ZnWO4 and provides insight into new perspectives on ZnWO4-based photocatalyst. Many researches have shown significant improvement in the efficiency of ZnWO4 by mixing with polymers and doping with metals, nonmetals, and other nanoparticles. The review also provides information on the mechanism of doping ZnWO4 with metals, non-metals, metalloids, metals oxides, and polymers based on different synthesis methods for bandgap reduction and extension of its photocatalytic activity to the visible region. The doped ZnWO4 photocatalyst was a more effective and environmentally friendly material for removing organic and inorganic contaminants in industrial wastewater than ordinary ZnWO4 nanocrystalline under suitable growth conditions.
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Affiliation(s)
- Hassana Ladio Abubakar
- Department of Chemistry, Federal University of Technology, PMB, 65, Minna, Niger State, Nigeria.,Department of Chemistry, Nile University of Nigeria, Airport Road, Jabi, Abuja, Nigeria
| | - Jimoh Oladejo Tijani
- Department of Chemistry, Federal University of Technology, PMB, 65, Minna, Niger State, Nigeria.,Nanotechnology Research Group, African Centre of Excellence on Food Safety and Mycotoxins, Federal University of Technology, PMB 65, Bosso, Minna, Niger State, Nigeria
| | - Saka Ambali Abdulkareem
- Department of Chemical Engineering, Federal University of Technology, PMB, 65, Minna, Niger State, Nigeria.,Nanotechnology Research Group, African Centre of Excellence on Food Safety and Mycotoxins, Federal University of Technology, PMB 65, Bosso, Minna, Niger State, Nigeria
| | - Abdullahi Mann
- Department of Chemistry, Federal University of Technology, PMB, 65, Minna, Niger State, Nigeria
| | - Saheed Mustapha
- Department of Chemistry, Federal University of Technology, PMB, 65, Minna, Niger State, Nigeria.,Nanotechnology Research Group, African Centre of Excellence on Food Safety and Mycotoxins, Federal University of Technology, PMB 65, Bosso, Minna, Niger State, Nigeria
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17
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Kokila GN, Mallikarjunaswamy C, Ranganatha VL. A review on synthesis and applications of versatile nanomaterials. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2081189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- G. N. Kokila
- Postgraduate Department of Chemistry, JSS College of Arts, Commerce and Science, Mysuru, Karnataka, India
| | - C. Mallikarjunaswamy
- Postgraduate Department of Chemistry, JSS College of Arts, Commerce and Science, Mysuru, Karnataka, India
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18
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Optimizing the Antibacterial Activity of Iron Oxide Nanoparticles Using Central Composite Design. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02367-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Hadadian Y, Masoomi H, Dinari A, Ryu C, Hwang S, Kim S, Cho BK, Lee JY, Yoon J. From Low to High Saturation Magnetization in Magnetite Nanoparticles: The Crucial Role of the Molar Ratios Between the Chemicals. ACS OMEGA 2022; 7:15996-16012. [PMID: 35571799 PMCID: PMC9097206 DOI: 10.1021/acsomega.2c01136] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/12/2022] [Indexed: 05/28/2023]
Abstract
In this study, a comprehensive characterization of iron oxide nanoparticles synthesized by using a simple one-pot thermal decomposition route is presented. In order to obtain monodisperse magnetite nanoparticles with high saturation magnetization, close to the bulk material, the molar ratios between the starting materials (solvents, reducing agents, and surfactants) were varied. Two out of nine conditions investigated in this study resulted in monodisperse iron oxide nanoparticles with high saturation magnetization (90 and 93% of bulk magnetite). The X-ray diffraction analyses along with the inspection of the lattice structure through transmission electron micrographs revealed that the main cause of the reduced magnetization in the other seven samples is likely due to the presence of distortion and microstrain in the particles. Although the thermogravimetric analysis, Raman and Fourier transform infrared spectroscopies confirmed the presence of covalently bonded oleic acid on the surface of all the samples, the particles with higher polydispersity and the lowest surface coating molecules showed the lowest saturation magnetization. Based on the observed results, it could be speculated that the changes in the kinetics of the reactions, induced by varying the molar ratio of the starting chemicals, can lead to the production of the particles with higher polydispersity and/or lattice deformation in their crystal structures. Finally, it was concluded that the experimental conditions for obtaining high-quality iron oxide nanoparticles, particularly the molar ratios and the heating profile, should not be chosen independently; for any specific molar ratio, there may exist a specific heating profile or vice versa. Because this synthetic consideration has rarely been reported in the literature, our results can give insights into the design of iron oxide nanoparticles with high saturation magnetization for different applications.
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Affiliation(s)
- Yaser Hadadian
- Research
Center for Nanorobotics in Brain, Gwangju
Institute of Science and Technology, Gwangju 61005, Republic of Korea
- School
of Integrated Technology, Gwangju Institute
of Science and Technology, Gwangju 61005, Republic of Korea
| | - Hajar Masoomi
- Research
Center for Nanorobotics in Brain, Gwangju
Institute of Science and Technology, Gwangju 61005, Republic of Korea
- School
of Integrated Technology, Gwangju Institute
of Science and Technology, Gwangju 61005, Republic of Korea
| | - Ali Dinari
- Research
Center for Nanorobotics in Brain, Gwangju
Institute of Science and Technology, Gwangju 61005, Republic of Korea
- School
of Integrated Technology, Gwangju Institute
of Science and Technology, Gwangju 61005, Republic of Korea
| | - Chiseon Ryu
- School
of Materials Science and Engineering, Gwangju
Institute of Science and Technology, Gwangju 61005, Republic
of Korea
| | - Seong Hwang
- School
of Materials Science and Engineering, Gwangju
Institute of Science and Technology, Gwangju 61005, Republic
of Korea
| | - Seokjae Kim
- Korea
Institute of Medical Microrobotics (KIMIRo), 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
| | - Beong ki Cho
- School
of Materials Science and Engineering, Gwangju
Institute of Science and Technology, Gwangju 61005, Republic
of Korea
| | - Jae Young Lee
- School
of Materials Science and Engineering, Gwangju
Institute of Science and Technology, Gwangju 61005, Republic
of Korea
| | - Jungwon Yoon
- Research
Center for Nanorobotics in Brain, Gwangju
Institute of Science and Technology, Gwangju 61005, Republic of Korea
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20
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Cyriac V, Molakalu Padre S, Ismayil, Sangam Chandrashekar G, Chavan C, Fakeerappa Bhajantri R, Murari MS. Tuning the ionic conductivity of flexible polyvinyl alcohol/sodium bromide polymer electrolyte films by incorporating silver nanoparticles for energy storage device applications. J Appl Polym Sci 2022. [DOI: 10.1002/app.52525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Vipin Cyriac
- Department of Sciences Manipal Academy of Higher Education Manipal Karnataka India
- Nanomaterials and Polymer Physics Lab, Department of Physics, Manipal Institute of Technology Manipal Academy of Higher Education Manipal Karnataka India
| | - Shilpa Molakalu Padre
- Department of Sciences Manipal Academy of Higher Education Manipal Karnataka India
- Nanomaterials and Polymer Physics Lab, Department of Physics, Manipal Institute of Technology Manipal Academy of Higher Education Manipal Karnataka India
| | - Ismayil
- Nanomaterials and Polymer Physics Lab, Department of Physics, Manipal Institute of Technology Manipal Academy of Higher Education Manipal Karnataka India
| | - Gurumurthy Sangam Chandrashekar
- Nanomaterials and Polymer Physics Lab, Department of Physics, Manipal Institute of Technology Manipal Academy of Higher Education Manipal Karnataka India
| | - Chetan Chavan
- Department of Studies in Physics Karnataka University Dharwad Karnataka India
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21
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Mourdikoudis S, Antonatos N, Mazánek V, Marek I, Sofer Z. Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction. Inorg Chem 2022; 61:5524-5538. [PMID: 35344664 DOI: 10.1021/acs.inorgchem.1c03938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nitrogen reduction to ammonia under ambient conditions has received important attention, in which high-performing catalysts are sought. A new, facile, and seedless solvothermal method based on a high-temperature reduction route has been developed in this work for the production of bismuthene nanostructures with excellent performance in the electrocatalytic nitrogen reduction reaction (NRR). Different reaction conditions were tested, such as the type of solvent, surfactant, reducing agent, reaction temperature, and time, as well as bismuth precursor source, resulting in distinct particle morphologies. Two-dimensional sheet-like structures and small particles displayed very high electrocatalytic activity, attributed to the abundance of tips, edges, and high surface area. NRR experiments resulted in an ammonia yield of 571 ± 0.1 μg h-1 cm-2 with a respective Faradaic efficiency of 7.94 ± 0.2% vs Ag/AgCl. The easy implementation of the synthetic reaction to produce Bi nanostructures facilitates its potential scale up to larger production yields.
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Affiliation(s)
- Stefanos Mourdikoudis
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Nikolas Antonatos
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Vlastimil Mazánek
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Ivo Marek
- Central Laboratories, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
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22
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Nozawa R, Naka T, Kurihara M, Togashi T. Size-tunable synthesis of iron oxide nanocrystals by continuous seed-mediated growth: role of alkylamine species in the stepwise thermal decomposition of iron(II) oxalate. Dalton Trans 2021; 50:16021-16029. [PMID: 34613325 DOI: 10.1039/d1dt02953c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The properties of inorganic nanoparticles (NPs) are governed by their size. Therefore, tuning the size of NPs is a fundamental technique in nanoscience. However, the size-tunable synthesis of inorganic NPs is generally carried out in a dilute solution, which produces large quantities of waste. Herein, we report the predictable size-tunable synthesis of Fe3O4 NPs by the stepwise thermal decomposition of iron(II) oxalate (Fe(ox)). Monodisperse Fe3O4 seed crystals were synthesized by the thermal decomposition of oleylamine-coordinated iron oxalate (Fe(ox)-OAm) in a small amount of oleylamine, followed by continuous seed-mediated growth of Fe3O4 NPs. The thermal decomposition behavior of Fe(ox) in oleylamine with and without N,N-diethyl-1,3-diaminopropane (dedap) revealed the important role of dedap in the stepwise thermal decomposition of Fe(ox). The size of the Fe3O4 NPs was easily tuned via the stepwise thermal decomposition of Fe(ox) by controlling the amount of decomposed Fe(ox) in a small amount of an alkylamine mixture. The particle diameter was predicted from the size of the Fe3O4 seed crystals and the amount of decomposed Fe(ox). Finally, the size dependency of magnetic properties of the synthesized Fe3O4 NPs was studied. This continuous seed-mediated growth method based on the stepwise thermal decomposition of metal oxalate can be applied to control the size of a variety of metal and metal oxide NPs.
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Affiliation(s)
- Ryosuke Nozawa
- Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Takashi Naka
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
| | - Masato Kurihara
- Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Takanari Togashi
- Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
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23
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Effect of solvent volume on the properties of ZnWO4 nanoparticles and their photocatalytic activity for the degradation of cationic dye. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108810] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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24
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Malik S, Subramanian S, Hussain T, Nazir A, Ramakrishna S. Electrosprayed Nanoparticles as Drug Delivery systems for Biomedical Applications. Curr Pharm Des 2021; 28:368-379. [PMID: 34587881 DOI: 10.2174/1381612827666210929114621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/25/2021] [Accepted: 06/03/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Nanotechnology is a tool being used intensely in the area of drug delivery systems in the biomedical field. Electrospraying is one of the nanotechnological methods, which is growing due to its importance in the development of nanoparticles comprising bioactive compounds. It is helpful in improving the efficacy, reducing side effects of active drug elements, and is useful in targeted drug delivery. When compared to other conventional methods like nanoprecipitation, emulsion diffusion, and double emulsification, electrospraying offers better advantages to produce micro/nanoparticles due to its simplicity, cost-effectiveness, and single-step process. OBJECTIVE The aim of this paper is to highlight the use of electrosprayed nanoparticles for biomedical applications. METHODS We conducted a literature review on the usage of natural and synthetic materials to produce nanoparticles, which can be used as a drug delivery system for medical purposes. RESULTS We summarized a possible key role of electrosprayed nanoparticles in different therapeutic applications (tissue regeneration, cancer). CONCLUSION The modest literature production denotes that further investigation is needed to assess and validate the promising role of drug-loaded nanoparticles through the electrospraying process as noninvasive materials in the biomedical field.
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Affiliation(s)
- Sairish Malik
- Electrospun Materials & Polymeric Membranes Research Group (EMPMRG), National Textile University, Sheikhupura road, 37610, Faisalabad . Pakistan
| | - Sundarrajan Subramanian
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576 . Singapore
| | - Tanveer Hussain
- Electrospun Materials & Polymeric Membranes Research Group (EMPMRG), National Textile University, Sheikhupura road, 37610, Faisalabad . Pakistan
| | - Ahsan Nazir
- Electrospun Materials & Polymeric Membranes Research Group (EMPMRG), National Textile University, Sheikhupura road, 37610, Faisalabad . Pakistan
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576 . Singapore
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25
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Lu C, Han L, Wang J, Wan J, Song G, Rao J. Engineering of magnetic nanoparticles as magnetic particle imaging tracers. Chem Soc Rev 2021; 50:8102-8146. [PMID: 34047311 DOI: 10.1039/d0cs00260g] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Magnetic particle imaging (MPI) has recently emerged as a promising non-invasive imaging technique because of its signal linearly propotional to the tracer mass, ability to generate positive contrast, low tissue background, unlimited tissue penetration depth, and lack of ionizing radiation. The sensitivity and resolution of MPI are highly dependent on the properties of magnetic nanoparticles (MNPs), and extensive research efforts have been focused on the design and synthesis of tracers. This review examines parameters that dictate the performance of MNPs, including size, shape, composition, surface property, crystallinity, the surrounding environment, and aggregation state to provide guidance for engineering MPI tracers with better performance. Finally, we discuss applications of MPI imaging and its challenges and perspectives in clinical translation.
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Affiliation(s)
- Chang Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Linbo Han
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen 518118, P. R. China
| | - Joanna Wang
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California 94305-5484, USA.
| | - Jiacheng Wan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Guosheng Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Jianghong Rao
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford University School of Medicine, 1201 Welch Road, Stanford, California 94305-5484, USA.
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26
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Gohain SB, Thakur AJ. Au Nanostructures with Controlled Morphology, Biosynthesized from
Garcinia cowa
Fruit Extract, and Their Use in Microwave‐Mediated Bisindole Synthesis. ChemistrySelect 2021. [DOI: 10.1002/slct.202100157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shivanee B. Gohain
- Department of Chemical Sciences Tezpur University, Napaam Assam 784028 India
| | - Ashim J. Thakur
- Department of Chemical Sciences Tezpur University, Napaam Assam 784028 India
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Pegylation of phenothiazine – A synthetic route towards potent anticancer drugs. J Adv Res 2021; 37:279-290. [PMID: 35499049 PMCID: PMC9040145 DOI: 10.1016/j.jare.2021.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 07/01/2021] [Accepted: 07/06/2021] [Indexed: 11/22/2022] Open
Abstract
Antitumor activity of two PEGylated phenotiazines was investigated The compounds showed cytotoxic activity against six tumor lines They inhibited the tumor growth in experimental mice The PEGylation improved the phenothiazine biocompatibility A synergistic effect of PEG and phenothiazine toward properties improvement was proved
Introduction Cancer is a big challenge of the 21 century, whose defeat requires efficient antitumor drugs. Objectives The paper aims to investigate the synergistic effect of two structural building blocks, phenothiazine and poly(ethylene glycol), towards efficient antitumor drugs. Methods Two PEGylated phenothiazine derivatives were synthetized by attaching poly(ethylene glycol) of 550 Da to the nitrogen atom of phenothiazine by ether or ester linkage. Their antitumor activity has been investigated on five human tumour lines and a mouse tumor line as well, by determination of IC50. The in vivo toxicity was determined by measuring the LD50 in BALB/c mice by the sequential method and the in vivo antitumor potential was measured by the tumours growth test. The antitumor mechanism was investigated by complexation studies of zinc and magnesium ions characteristic to the farnesyltransferase enzyme, by studies of self-aggregation in the cells proximity and by investigation of the antitumor properties of the acid species resulted by enzymatic cleavage of the PEGylated derivatives. Results The two compounds showed antitumor activity, with IC50 against mouse colon carcinoma cell line comparable with that of the traditional antitumor drugs 5-Fluorouracil and doxorubicin. The phenothiazine PEGylation resulted in a significant toxicity diminishing, the LD50 in BALB/c mice increasing from 952.38 up to 1450 mg/kg, in phenothiazine equivalents. Both compounds inflicted a 92% inhibition of the tumour growth for doses much smaller than LD50. The investigation of the possible tumour inhibition mechanism suggested the nanoaggregate formation and the cleavage of ester bonds as key factors for the inhibition of cancer cell proliferation and biocompatibility improvement. Conclusion Phenothiazine and PEG building blocks have a synergetic effect working for both tumour growth inhibition and biocompatibility improvement. All these findings recommend the PEGylated phenothiazine derivatives as a valuable workbench for a next generation of antitumor drugs.
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28
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Dören R, Leibauer B, Lange MA, Schechtel E, Prädel L, Panthöfer M, Mondeshki M, Tremel W. Gram-scale selective synthesis of WO 3-x nanorods and (NH 4) xWO 3 ammonium tungsten bronzes with tunable plasmonic properties. NANOSCALE 2021; 13:8146-8162. [PMID: 33881034 DOI: 10.1039/d0nr09055g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Localized surface plasmon resonance properties in unconventional materials like metal oxides or chalcogenide semiconductors have been studied for use in signal detection and analysis in biomedicine and photocatalysis. We devised a selective synthesis of the tungsten oxides WO3-x and (NH4)xWO3 with tunable plasmonic properties. We selectively synthesized WO3-x nanorods with different aspect ratios and hexagonal tungsten bronzes (NH4)xWO3 as truncated nanocubes starting from ammonium metatungstate (NH4)6H2W12O40·xH2O. Both particles form from the same nuclei at temperatures >200 °C; monomer concentration and surfactant ratio are essential variables for phase selection. (NH4)xWO3 was the preferred reaction product only for fast heating rates (25 K min-1), slow stirring speeds (∼150 rpm) and high precursor concentrations. A proton nuclear magnetic resonance (1H-NMR) spectroscopic study of the reaction mechanism revealed that oleyl oleamide, formed from oleic acid and oleylamine upon heating, is a key factor for the selective formation of WO3-x nanorods. Since oleic acid and oleylamine are standard surfactants for the wet chemical synthesis of many metal and oxide nanoparticles, the finding that oleyl oleamide acts as a chemically active reagent above 250 °C may have implications for many nanoparticle syntheses. Oriented attachment of polyoxotungstate anions is proposed as a model to rationalize phase selectivity. Magic angle spinning (MAS) 1H-NMR and powder X-ray diffraction (PXRD) studies of the bronze after annealing under (non)inert conditions revealed an oxidative phase transition. WO3-x and (NH4)xWO3 show a strong plasmon absorption for near infra-red light between 800 and 3300 nm. The maxima of the plasmon bands shift systematically with the nanocrystal aspect ratio.
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Affiliation(s)
- René Dören
- Johannes Gutenberg-Universität Mainz, Institut für Anorganische Chemie und Analytische Chemie, Duesbergweg 10-14, D-55128 Mainz, Germany.
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29
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Sahoo L, Dhindsa PK, P NC, Gautam UK. 'Pre-optimization' of the solvent of nanoparticle synthesis for superior catalytic efficiency: a case study with Pd nanocrystals. NANOSCALE ADVANCES 2021; 3:2366-2376. [PMID: 36133759 PMCID: PMC9417607 DOI: 10.1039/d0na01006e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/15/2021] [Indexed: 06/16/2023]
Abstract
In view of a limited rationale available for designing metal nanocrystals (NCs) to achieve high catalytic activities across various chemical transformations, we offer a new perspective on the optimization of the 'solvent-of-nanocrystal-synthesis' that, to an extent, would help bypass the tedious characterization needs. A systematic improvement in a catalyst is hindered because (i) it relies on size & shape control protocols, surface characterization, understanding molecular transformation mechanisms, and the energetics of the reactant-catalyst interactions, requiring the involvement of different domains experts, and (ii) the insights developed using model reactions may not easily extend to other reactions, although the current studies count on such a hypothesis. In support of (ii), by taking Pd NCs as catalysts and two distinct reaction types, viz. Suzuki coupling and nitroarene reduction, we show to what great extent the reaction rates may vary even for the seemingly similar reactions by using the same NCs. More importantly, for challenge (i), we demonstrate how the addition of a single-step to the current protocol of 'catalyst-synthesis and activity test' can potentially lead to the development of highly active catalysts by first finding a suitable solvent for the NC synthesis, while such solvent-effects are barely considered unlike the same in organic transformation reactions as a matter of routine, for example.
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Affiliation(s)
- Lipipuspa Sahoo
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali Sector 81 SAS Nagar Mohali Punjab 140306 India
| | - Parmeet Kaur Dhindsa
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali Sector 81 SAS Nagar Mohali Punjab 140306 India
| | - Nihal C P
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali Sector 81 SAS Nagar Mohali Punjab 140306 India
| | - Ujjal K Gautam
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali Sector 81 SAS Nagar Mohali Punjab 140306 India
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Iron-Palladium magnetic nanoparticles for decolorizing rhodamine B and scavenging reactive oxygen species. J Colloid Interface Sci 2021; 588:646-656. [PMID: 33267951 DOI: 10.1016/j.jcis.2020.11.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 11/15/2020] [Accepted: 11/16/2020] [Indexed: 11/20/2022]
Abstract
HYPOTHESIS Here, FePd magnetic nanoparticles (MNPs) are developed as artificial enzymes with high biocompatibility and reusability. EXPERIMENT The nanoparticles (NPs) are synthesized in an aqueous solvent by one-pot synthesis utilizing glutathione (GSH) and cysteine (Cys) as surfactants. FINDINGS The prepared hydrophilic FePd NPs are redispersible in water. Further, they exhibit catalytic activity for the degradation of rhodamine B (RhB), as well as for the inhibition of reactive oxygen species (ROS) production induced by H2O2, which are two- and seven-fold enhancements of their catalytic performances, respectively, compared with that of horseradish peroxidase. The computational simulation and electrochemical analysis indicate that the enhancement of the catalytic effect is due to the protection of the MNP surface by GSH and Cys. In vitro experiments reveal that FePd MNPs behave like a peroxidase and decrease the ROS in mammalian cells. The cytotoxicity assessment of FePd MNPs via exposures to different cell lines for over seven days indicates that they can maintain the cell viability of >90% for up to 20 μgmL-1 concentration. FePd MNPs with high saturation magnetization and biocompatibility can be utilized as recyclable peroxidase-mimicking nanozymes and biosensors in a variety of catalytic and biological applications.
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31
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Laid TM, Abdelhamid K, Eddine LS, Abderrhmane B. Optimizing the biosynthesis parameters of iron oxide nanoparticles using central composite design. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129497] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vihodceva S, Šutka A, Sihtmäe M, Rosenberg M, Otsus M, Kurvet I, Smits K, Bikse L, Kahru A, Kasemets K. Antibacterial Activity of Positively and Negatively Charged Hematite ( α-Fe 2O 3) Nanoparticles to Escherichia coli, Staphylococcus aureus and Vibrio fischeri. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:652. [PMID: 33800165 PMCID: PMC7999532 DOI: 10.3390/nano11030652] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 02/08/2023]
Abstract
In the current study, the antibacterial activity of positively and negatively charged spherical hematite (α-Fe2O3) nanoparticles (NPs) with primary size of 45 and 70 nm was evaluated against clinically relevant bacteria Escherichia coli (gram-negative) and Staphylococcus aureus (gram-positive) as well as against naturally bioluminescent bacteria Vibrio fischeri (an ecotoxicological model organism). α-Fe2O3 NPs were synthesized using a simple green hydrothermal method and the surface charge was altered via citrate coating. To minimize the interference of testing environment with NP's physic-chemical properties, E. coli and S. aureus were exposed to NPs in deionized water for 30 min and 24 h, covering concentrations from 1 to 1000 mg/L. The growth inhibition was evaluated following the postexposure colony-forming ability of bacteria on toxicant-free agar plates. The positively charged α-Fe2O3 at concentrations from 100 mg/L upwards showed inhibitory activity towards E. coli already after 30 min of contact. Extending the exposure to 24 h caused total inhibition of growth at 100 mg/L. Bactericidal activity of positively charged hematite NPs against S. aureus was not observed up to 1000 mg/L. Differently from positively charged hematite NPs, negatively charged citrate-coated α-Fe2O3 NPs did not exhibit any antibacterial activity against E. coli and S. aureus even at 1000 mg/L. Confocal laser scanning microscopy and flow cytometer analysis showed that bacteria were more tightly associated with positively charged α-Fe2O3 NPs than with negatively charged citrate-coated α-Fe2O3 NPs. Moreover, the observed associations were more evident in the case of E. coli than S. aureus, being coherent with the toxicity results. Vibrio fischeri bioluminescence inhibition assays (exposure medium 2% NaCl) and colony forming ability on agar plates showed no (eco)toxicity of α-Fe2O3 (EC50 and MBC > 1000 mg/L).
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Affiliation(s)
- Svetlana Vihodceva
- Research Laboratory of Functional Materials Technologies, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Paula Valdena 3/7, LV-1048 Riga, Latvia;
| | - Andris Šutka
- Research Laboratory of Functional Materials Technologies, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Paula Valdena 3/7, LV-1048 Riga, Latvia;
| | - Mariliis Sihtmäe
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
| | - Merilin Rosenberg
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
- Institute of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Maarja Otsus
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
| | - Imbi Kurvet
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
| | - Krisjanis Smits
- Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063 Riga, Latvia; (K.S.); (L.B.)
| | - Liga Bikse
- Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063 Riga, Latvia; (K.S.); (L.B.)
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
- Estonian Academy of Sciences, Kohtu 6, 10130 Tallinn, Estonia
| | - Kaja Kasemets
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia; (M.S.); (M.R.); (M.O.); (I.K.); (K.K.)
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Zambonino MC, Quizhpe EM, Jaramillo FE, Rahman A, Santiago Vispo N, Jeffryes C, Dahoumane SA. Green Synthesis of Selenium and Tellurium Nanoparticles: Current Trends, Biological Properties and Biomedical Applications. Int J Mol Sci 2021; 22:989. [PMID: 33498184 PMCID: PMC7863925 DOI: 10.3390/ijms22030989] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 12/17/2022] Open
Abstract
The synthesis and assembly of nanoparticles using green technology has been an excellent option in nanotechnology because they are easy to implement, cost-efficient, eco-friendly, risk-free, and amenable to scaling up. They also do not require sophisticated equipment nor well-trained professionals. Bionanotechnology involves various biological systems as suitable nanofactories, including biomolecules, bacteria, fungi, yeasts, and plants. Biologically inspired nanomaterial fabrication approaches have shown great potential to interconnect microbial or plant extract biotechnology and nanotechnology. The present article extensively reviews the eco-friendly production of metalloid nanoparticles, namely made of selenium (SeNPs) and tellurium (TeNPs), using various microorganisms, such as bacteria and fungi, and plants' extracts. It also discusses the methodologies followed by materials scientists and highlights the impact of the experimental sets on the outcomes and shed light on the underlying mechanisms. Moreover, it features the unique properties displayed by these biogenic nanoparticles for a large range of emerging applications in medicine, agriculture, bioengineering, and bioremediation.
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Affiliation(s)
- Marjorie C. Zambonino
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador; (M.C.Z.); (E.M.Q.); (F.E.J.); (N.S.V.)
| | - Ernesto Mateo Quizhpe
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador; (M.C.Z.); (E.M.Q.); (F.E.J.); (N.S.V.)
| | - Francisco E. Jaramillo
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador; (M.C.Z.); (E.M.Q.); (F.E.J.); (N.S.V.)
| | - Ashiqur Rahman
- Center for Midstream Management and Science, Lamar University, Beaumont, TX 77710, USA;
- Center for Advances in Water and Air Quality & The Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;
| | - Nelson Santiago Vispo
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador; (M.C.Z.); (E.M.Q.); (F.E.J.); (N.S.V.)
| | - Clayton Jeffryes
- Center for Advances in Water and Air Quality & The Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;
| | - Si Amar Dahoumane
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador; (M.C.Z.); (E.M.Q.); (F.E.J.); (N.S.V.)
- Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079, Succ. Centre-ville, Montréal, QC H3C 3A7, Canada
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Sarif M, Hilgert J, Khan I, Harris RA, Plana-Ruiz S, Ashraf M, Pütz E, Schemberg J, Panthöfer M, Kolb U, Nawaz Tahir M, Tremel W. Selective Synthesis of Monodisperse CoO Nanooctahedra as Catalysts for Electrochemical Water Oxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13804-13816. [PMID: 33171051 DOI: 10.1021/acs.langmuir.0c02131] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Thermal decomposition is a promising route for the synthesis of metal oxide nanoparticles because size and morphology can be tuned by minute control of the reaction variables. We synthesized CoO nanooctahedra with diameters of ∼48 nm and a narrow size distribution. Full control over nanoparticle size and morphology could be obtained by controlling the reaction time, surfactant ratio, and reactant concentrations. We show that the particle size does not increase monotonically with time or surfactant concentration but passes through minima or maxima. We unravel the critical role of the surfactants in nucleation and growth and rationalize the observed experimental trends in accordance with simulation experiments. The as-synthesized CoO nanooctahedra exhibit superior electrocatalytic activity with long-term stability during oxygen evolution. The morphology of the CoO particles controls the electrocatalytic reaction through the distinct surface sites involved in the oxygen evolution reaction.
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Affiliation(s)
- Massih Sarif
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Jan Hilgert
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Ibrahim Khan
- Center of Integrative Petroleum Research, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Richard A Harris
- Department of Physics, University of the Free State, Bloemfontein 9300, Republic of South Africa
| | - Sergi Plana-Ruiz
- Faculty of Physics, University of Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstrasse 9, 64287 Darmstadt, Germany
| | - Muhammad Ashraf
- Department of Chemistry, King Fahd University of Petroleum and Minerals, P. O. Box 5048, Dhahran 31261, Saudi Arabia
| | - Eva Pütz
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Jörg Schemberg
- Institut für Bioprozess-und Analysenmesstechnik e.V., Rosenhof 1, 37308 Heilbad Heiligenstadt, Germany
| | - Martin Panthöfer
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Ute Kolb
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Muhammad Nawaz Tahir
- Department of Chemistry, King Fahd University of Petroleum and Minerals, P. O. Box 5048, Dhahran 31261, Saudi Arabia
| | - Wolfgang Tremel
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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35
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Neupane GR, Hari P. Role of Polyvinylpyrrolidone (PVP) on Controlling the Structural, Optical, and Electrical Properties of Vanadium Pentoxide (V
2
O
5
) Nanoparticles. ChemistrySelect 2020. [DOI: 10.1002/slct.202002916] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ganga R. Neupane
- Department of Physics and Engineering Physics University of Tulsa Tulsa Oklahoma 74104 USA
| | - Parameswar Hari
- Department of Physics and Engineering Physics University of Tulsa Tulsa Oklahoma 74104 USA
- The Oklahoma Photovoltaic Research Institute University of Tulsa Tulsa Oklahoma 74104 USA
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36
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Investigation of Catalytic Potential and Radical Scavenging Efficacy of Terminalia bellerica Roxb Bark Mediated Ecofriendly Silver Nanoparticles. J CLUST SCI 2020. [DOI: 10.1007/s10876-020-01865-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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37
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Saddeler S, Hagemann U, Schulz S. Effect of the Size and Shape on the Electrocatalytic Activity of Co3O4 Nanoparticles in the Oxygen Evolution Reaction. Inorg Chem 2020; 59:10013-10024. [DOI: 10.1021/acs.inorgchem.0c01180] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Saddeler
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen, Universitätsstrasse 5−7, S07 S03 C30, D-45117 Essen, Germany
| | - U. Hagemann
- Interdisciplinary Center for Analytics on the Nanoscale (ICAN), NanoEnergieTechnikZentrum, Carl-Benz-Strasse 199, D-47057 Duisburg, Germany
| | - S. Schulz
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen, Universitätsstrasse 5−7, S07 S03 C30, D-45117 Essen, Germany
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38
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Borah DJ, Mostako ATT, Borgogoi AT, Saikia PK, Malakar A. Modified top-down approach for synthesis of molybdenum oxide quantum dots: sonication induced chemical etching of thin films. RSC Adv 2020; 10:3105-3114. [PMID: 35497721 PMCID: PMC9048723 DOI: 10.1039/c9ra09773b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 01/10/2020] [Indexed: 02/01/2023] Open
Abstract
A simple and modified top-down approach to synthesize molybdenum oxide (MoOx: x = 2, 3) quantum dots (QDs) is proposed in this study. This modified approach involves the conversion of a bulk powder material into thin films followed by a sonication induced chemical etching process for synthesising QDs. X-Ray Diffraction (XRD) is used for crystal structural characterization of MoOx thin films. The crystal structure properties of the MoOx QDs are analysed by High Resolution Transmission Electron Microscopy (HRTEM) images and corresponding Selected Area Electron Diffraction (SAED) patterns. The optical band gap is estimated by Tauc's plot from UV-Vis-NIR absorption spectra. The excitation dependent photoluminescence (PL) emission of MoOx QDs as a function of acid concentration is investigated. The growth mechanism of QDs in different crystalline phases as a function of acid concentration is also exemplified in this work. The micro-Raman and Fourier Transform of Infrared (FTIR) spectra are recorded to analyse the vibrational spectrum of the molybdenum–oxygen (Mo–O) bonds in the MoOx QDs. A simple and modified top-down approach to synthesize molybdenum oxide (MoOx: x = 2, 3) quantum dots (QDs) is proposed in this study.![]()
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Affiliation(s)
- Dibya Jyoti Borah
- Material Science Laboratory, Department of Physics, Dibrugarh University Dibrugarh-786004 Assam India
| | - Abu Talat Tahir Mostako
- Material Science Laboratory, Department of Physics, Dibrugarh University Dibrugarh-786004 Assam India
| | | | - Prasanta Kumar Saikia
- Thin Film Laboratory, Department of Physics, Dibrugarh University Dibrugarh-786004 Assam India
| | - Ashim Malakar
- Central Instrumental Facility, Indian Institute of Technology Guwahati Guwahati-39 India
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39
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Merlano AS, Hoyos LM, Gutiérrez GJ, Valenzuela MA, Salazar Á. Effect of Zn precursor concentration in the synthesis of rGO/ZnO composites and their photocatalytic activity. NEW J CHEM 2020. [DOI: 10.1039/d0nj03683h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This work focuses on the synthesis of composite materials based on reduced graphene oxide reinforced with zinc oxide.
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Affiliation(s)
- Aura S. Merlano
- Grupo de Óptica y Espectroscopía (GOE)
- Centro de Ciencia Básica
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
| | - Lina M. Hoyos
- Grupo de Investigación en Biología de Sistemas
- Escuela de Ciencias de la Salud
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
| | - Guadalupe J. Gutiérrez
- Sección de Estudios de Posgrado e Investigación
- ESIME Azcapotzalco-Instituto Politécnico Nacional
- Santa Catarina
- Mexico
| | | | - Ángel Salazar
- Grupo de Óptica y Espectroscopía (GOE)
- Centro de Ciencia Básica
- Universidad Pontificia Bolivariana
- Medellín
- Colombia
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40
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Balakrishnan T, Lee MJ, Dey J, Choi SM. Sub-nanometer scale size-control of iron oxide nanoparticles with drying time of iron oleate. CrystEngComm 2019. [DOI: 10.1039/c9ce00112c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The drying time of iron oleate as a single and reliable control parameter for the fine size control (with a sub-nanometer scale step) of monodisperse IONPs in the large-scale thermal decomposition method.
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Affiliation(s)
- Thiruparasakthi Balakrishnan
- Department of Nuclear and Quantum Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Republic of Korea
| | - Min-Jae Lee
- Department of Nuclear and Quantum Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Republic of Korea
| | - Jahar Dey
- Department of Nuclear and Quantum Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Republic of Korea
| | - Sung-Min Choi
- Department of Nuclear and Quantum Engineering
- Korea Advanced Institute of Science and Technology
- Daejeon
- Republic of Korea
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Togashi T, Nozawa R, Kaga T, Naka T, Kanaizuka K, Kurihara M. Direct Conversion from Oleylamine-coordinated Iron Oxalate Powder to Colloidal Magnetite Nanoparticle via Simple Thermal Treatment. CHEM LETT 2018. [DOI: 10.1246/cl.180632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takanari Togashi
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-Machi, Yamagata 990-8560, Japan
| | - Ryosuke Nozawa
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-Machi, Yamagata 990-8560, Japan
| | - Takato Kaga
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-Machi, Yamagata 990-8560, Japan
| | - Takashi Naka
- National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Katsuhiko Kanaizuka
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-Machi, Yamagata 990-8560, Japan
| | - Masato Kurihara
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-Machi, Yamagata 990-8560, Japan
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42
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Sharifi Dehsari H, Harris RA, Ribeiro AH, Tremel W, Asadi K. Optimizing the Binding Energy of the Surfactant to Iron Oxide Yields Truly Monodisperse Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6582-6590. [PMID: 29726684 DOI: 10.1021/acs.langmuir.8b01337] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Despite the great progress in the synthesis of iron oxide nanoparticles (NPs) using a thermal decomposition method, the production of NPs with low polydispersity index is still challenging. In a thermal decomposition synthesis, oleic acid (OAC) and oleylamine (OAM) are used as surfactants. The surfactants bind to the growth species, thereby controlling the reaction kinetics and hence playing a critical role in the final size and size distribution of the NPs. Finding an optimum molar ratio between the surfactants oleic OAC/OAM is therefore crucial. A systematic experimental and theoretical study, however, on the role of the surfactant ratio is still missing. Here, we present a detailed experimental study on the role of the surfactant ratio in size distribution. We found an optimum OAC/OAM ratio of 3 at which the synthesis yielded truly monodisperse (polydispersity less than 7%) iron oxide NPs without employing any post synthesis size-selective procedures. We performed molecular dynamics simulations and showed that the binding energy of oleate to the NP is maximized at an OAC/OAM ratio of 3. The optimum OAC/OAM ratio of 3 is allowed for the control of the NP size with nanometer precision by simply changing the reaction heating rate. The optimum OAC/OAM ratio has no influence on the crystallinity and the superparamagnetic behavior of the Fe3O4 NPs and therefore can be adopted for the scaled-up production of size-controlled monodisperse Fe3O4 NPs.
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Affiliation(s)
| | - Richard Anthony Harris
- Department of Physics , University of the Free State , Bloemfontein 9300 , Republic of South Africa
| | | | - Wolfgang Tremel
- Department of Chemistry , Johannes Gutenberg University of Mainz , Mainz 55122 , Germany
| | - Kamal Asadi
- Max Planck Institute for Polymer Research , Ackermannweg 10 , Mainz 55128 , Germany
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