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Khort A, Dahlström A, Roslyakov S, Odnevall I. Smallest unit of maximal entropy as novel experimental criterion for parametric characterization of middle- and high-entropy materials. Phys Chem Chem Phys 2024; 26:11271-11276. [PMID: 38563160 DOI: 10.1039/d4cp00776j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Materials with multiple principal elements (middle- and high-entropy materials), are used in emerging applications in various fields due to their unique properties, driven by configuration entropy. Improved understanding and experimental investigations of the impact of the entropy of mixing on the properties of these materials are of large practical interest. Here we show a simplified limited area calculation approach for assessing the entropy of mixing using a CoCuFeNi model nanoalloy. Based on our calculations we propose a new parametric entropy-based criterion, which defines critical scale parameter transition from the maximal entropy state to the entropy-depleted state of the system. The criterion could be used for generalized mechanistic assessment of the effect of the entropy of mixing on the characteristics of the materials with multiple principal elements and for the development and characterization of existing and new middle- and high-entropy materials with both simple single-, and more complex, multiple-sublattice structures.
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Affiliation(s)
- Alexander Khort
- KTH Royal Institute of Technology, Stockholm, 10044, Sweden.
| | | | - Sergey Roslyakov
- University of Science and Technology ''MISIS'', Moscow, 119049, Russia
| | - Inger Odnevall
- KTH Royal Institute of Technology, Stockholm, 10044, Sweden.
- AIMES - Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Karolinska Institutet, Department of Neuroscience, Stockholm SE-171 77, Sweden
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2
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Linh HX, Linh PH, Tuan DD, Quynh PH, Hoa NX, Thanh DV, Hiep HP, Dung NQ. Facile route for preparation of cuprous oxide/copper/cupric oxide nanoparticles by using simultaneous electrochemical and reduction reaction. Heliyon 2024; 10:e25195. [PMID: 38352799 PMCID: PMC10862522 DOI: 10.1016/j.heliyon.2024.e25195] [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: 07/05/2023] [Revised: 01/01/2024] [Accepted: 01/23/2024] [Indexed: 02/16/2024] Open
Abstract
Cuprous oxide/copper/cupric oxide nanoparticles were synthesized through a hybrid process involving anodic dissolution and a controlled redox reaction between NaOH and glucose in the solution. The study demonstrates the structural manipulation of the material by varying the reaction components within the solution. Morphology, structural analyses using SEM (Scanning Electron Microscope), EDX (Energy-dispersive X-ray spectroscopy), TEM (Transmission Electron Microscope), FTIR (Fourier Transform Infrared Spectroscopy), XRD (X-ray diffraction), and XPS (X-ray photoelectron spectroscopy) unveiled the tunability of the material's structure based on the reaction components. Nitrogen adsorption analysis employing the Brunauer-Emmett-Teller (BET) equation confirmed the material's porosity, while Dynamic Light Scattering (DLS) measurements provided insights into the materials' hydrodynamic size and zeta potential. The results demonstrated that by increasing the glucose/NaOH ratio during the reaction, the different structures and morphologies of the distinct products were obtained from the clustering of small nanoparticles to cubic shape and flower-like structure. Antibacterial activity tests conducted on various bacterial strains showed a correlation between the morphology and structure of the material and its antibacterial properties. The highest substantial antibacterial efficacy against all tested bacterial strains at a dosage of 100 μg/L was obtained for the samples with clustering morphology, whereas the remaining materials showed no discernible antibacterial effect against one of the studied bacteria. The results also demonstrated that the sample with a clustering structure exhibited superior antibacterial properties when dispersed in water containing dimethylsulfoxide.
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Affiliation(s)
- Ha Xuan Linh
- International School, Thai Nguyen University, Tan Tinh Ward, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Pham Hoai Linh
- Institute of Materials Science, Vietnam Academy of Science and Technology, Ha Noi, 100000, Viet Nam
| | - Duong Dinh Tuan
- International School, Thai Nguyen University, Tan Tinh Ward, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Pham Huong Quynh
- Hanoi University of Industry, 298 Cau Dien Street, Bac Tu Liem District, Hanoi, 100000, Viet Nam
| | - Nguyen Xuan Hoa
- Faculty of Basic Science, Thai Nguyen University of Medicine and Pharmacy, Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Dang Van Thanh
- Faculty of Basic Science, Thai Nguyen University of Medicine and Pharmacy, Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
- Faculty of Environmental Sciences, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, Ha Noi, 100000, Viet Nam
| | - Hoang Phu Hiep
- Faculty of Biology, Thai Nguyen Unversity of Education, 20 Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Nguyen Quoc Dung
- Faculty of Chemistry, Thai Nguyen Unversity of Education, 20 Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
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Khort A, Chang T, Hua J, Blomberg E, Cedervall T, Odnevall I. Eco-corona-mediated transformation of nano-sized Y 2O 3 in simulated freshwater: A short-term study. NANOIMPACT 2024; 33:100490. [PMID: 38159885 DOI: 10.1016/j.impact.2023.100490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
The use of metal and metal oxide nanomaterials (NMs) is experiencing a significant surge in popularity due to their distinctive structures and properties, making them highly attractive for a wide range of applications. This increases the risks of their potential negative impact on organisms if dispersed into the environment. Information about their behavior and transformation upon environmental interactions in aquatic settings is limited. In this study, the influence of naturally excreted biomolecules from the zooplankton Daphnia magna on nanosized Y2O3 of different concentrations was systematically examined in synthetic freshwater in terms of adsorption and eco-corona formation, colloidal stability, transformation, dissolution, and ecotoxicity towards D. magna. The formation of an eco-corona on the surface of the Y2O3 NMs leads to improved colloidal stability and a reduced extent of dissolution. Exposure to the Y2O3 NMs lowered the survival probability of D. magna considerably. The ecotoxic potency was slightly reduced by the formation of the eco-corona, though shown to be particle concentration-specific. Overall, the results highlight the importance of systematic mechanistic and fundamental studies of factors that can affect the environmental fate and ecotoxic potency of NMs.
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Affiliation(s)
- Alexander Khort
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry, Division of Surface and Corrosion Science, 100 44 Stockholm, Sweden.
| | - Tingru Chang
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry, Division of Surface and Corrosion Science, 100 44 Stockholm, Sweden
| | - Jing Hua
- Department of Biochemistry and Structural Biology, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden; NanoLund, Lund University, Box 118, SE-221 00 Lund, Sweden
| | - Eva Blomberg
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry, Division of Surface and Corrosion Science, 100 44 Stockholm, Sweden
| | - Tommy Cedervall
- Department of Biochemistry and Structural Biology, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden; NanoLund, Lund University, Box 118, SE-221 00 Lund, Sweden
| | - Inger Odnevall
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry, Division of Surface and Corrosion Science, 100 44 Stockholm, Sweden; AIMES - Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska, Institutet and KTH Royal Institute of Technology, Stockholm, Sweden; Karolinska Institutet, Department of Neuroscience, SE-171 77 Stockholm, Sweden.
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4
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Khort A, Haiduk Y, Taratyn I, Moskovskikh D, Podbolotov K, Usenka A, Lapchuk N, Pankov V. High-performance selective NO 2 gas sensor based on In 2O 3-graphene-Cu nanocomposites. Sci Rep 2023; 13:7834. [PMID: 37188838 DOI: 10.1038/s41598-023-34697-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/05/2023] [Indexed: 05/17/2023] Open
Abstract
The control of atmosphere content and concentration of specific gases are important tasks in many industrial processes, agriculture, environmental and medical applications. Thus there is a high demand to develop new advanced materials with enhanced gas sensing characteristics including high gas selectivity. Herein we report the result of a study on the synthesis, characterization, and investigation of gas sensing properties of In2O3-graphene-Cu composite nanomaterials for sensing elements of single-electrode semiconductor gas sensors. The nanocomposite has a closely interconnected and highly defective structure, which is characterized by high sensitivity to various oxidizing and reducing gases and selectivity to NO2. The In2O3-based materials were obtained by sol-gel method, by adding 0-6 wt% of pre-synthesized graphene-Cu powder into In-containing gel before xerogel formation. The graphene-Cu flakes played the role of centers for In2O3 nucleation and then crystal growth terminators. This led to the formation of structural defects, influencing the surface energy state and concentration of free electrons. The concentration of defects increases with the increase of graphene-Cu content from 1 to 4 wt%, which also affects the gas-sensing properties of the nanocomposites. The sensors show a high sensing response to both oxidizing (NO2) and reducing (acetone, ethanol, methane) gases at an optimal working heating current of 91-161 mA (280-510 °C). The sensor with nanocomposite with 4 wt% of graphene-Cu additive showed the highest sensitivity to NO2 (46 ppm) in comparison with other tested gases with an absolute value of sensing response of (- ) 225 mV at a heating current of 131 mA (430 °C) and linear dependence of sensing response to NO2 concentration.
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Affiliation(s)
- Alexander Khort
- KTH Royal Institute of Technology, Teknikringen, 29, 114 28, Stockholm, Sweden.
| | - Yulyan Haiduk
- Belarusian State University, Niezaleznasti av. 4, 220030, Minsk, Belarus.
| | - Igor Taratyn
- Belarusian National Technical University, Prospekt Nezavisimosti, 65, 220013, Minsk, Belarus
| | - Dmitry Moskovskikh
- Center of Functional Nano-Ceramics, National University of Science and Technology MISIS, Lenin av. 4, 119049, Moscow, Russia
| | - Kirill Podbolotov
- Physical-Technical Institute, National Academy of Sciences of Belarus, Kuprevicha 10, 220141, Minsk, Belarus
| | - Alexandra Usenka
- Belarusian State University, Niezaleznasti av. 4, 220030, Minsk, Belarus
| | - Natalia Lapchuk
- Belarusian State University, Niezaleznasti av. 4, 220030, Minsk, Belarus
| | - Vladimir Pankov
- Belarusian State University, Niezaleznasti av. 4, 220030, Minsk, Belarus
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Chang T, Khort A, Saeed A, Blomberg E, Nielsen MB, Hansen SF, Odnevall I. Effects of interactions between natural organic matter and aquatic organism degradation products on the transformation and dissolution of cobalt and nickel-based nanoparticles in synthetic freshwater. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130586. [PMID: 37055991 DOI: 10.1016/j.jhazmat.2022.130586] [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: 09/12/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 06/19/2023]
Abstract
Expanding applications and production of engineered nanoparticles lead to an increased risk for their environmental dispersion. Systematic knowledge of surface transformation and dissolution of nanoparticles is essential for risk assessment and regulation establishment. Such aspects of Co- and Ni-based nanoparticles including metals, oxides, and solution combustion synthesized metal nanoparticles (metal cores with carbon shells) were investigated upon environmental interaction with organic matter, simulated by natural organic matter (NOM) and degradation products from zooplankton and algae (eco-corona biomolecules, EC) in freshwater (FW). The presence of NOM and EC in FW results in negative surface charges of the nanoparticles reduces the extent of nanoparticles agglomeration, and increases concentration, mainly due to the surface adsorption of carboxylate groups of the organic matter. The dissolution of the Co-based nanoparticles was for all conditions (FW, FW with NOM or EC) higher than the Ni-based, except for Co3O4 being nearly non-soluble. The surface transformation and dissolution of nanoparticles are highly exposure and time-dependent, and surface- and environment specific. Therefore, no general correlation was observed between dissolution and, particle types, surface conditions, or EC/NOM adsorption. This underlines the importance of thorough investigations of nanoparticles adsorption/desorption, degradation, and exposure scenarios for developing regulatory relevant protocols and guidelines.
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Affiliation(s)
- Tingru Chang
- KTH Royal Institute of Technology, Department of Chemistry, Division of Surface and Corrosion Science, Teknikringen 29, SE-100 44 Stockholm, Sweden
| | - Alexander Khort
- KTH Royal Institute of Technology, Department of Chemistry, Division of Surface and Corrosion Science, Teknikringen 29, SE-100 44 Stockholm, Sweden
| | - Anher Saeed
- KTH Royal Institute of Technology, Department of Chemistry, Division of Surface and Corrosion Science, Teknikringen 29, SE-100 44 Stockholm, Sweden
| | - Eva Blomberg
- KTH Royal Institute of Technology, Department of Chemistry, Division of Surface and Corrosion Science, Teknikringen 29, SE-100 44 Stockholm, Sweden
| | - Maria Bille Nielsen
- Department of Environmental and Resource Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Steffen Foss Hansen
- Department of Environmental and Resource Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Inger Odnevall
- KTH Royal Institute of Technology, Department of Chemistry, Division of Surface and Corrosion Science, Teknikringen 29, SE-100 44 Stockholm, Sweden; AIMES - Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska, Institutet and KTH Royal Institute of Technology, Stockholm, Sweden; Karolinska Institutet, Department of Neuroscience, SE-171 77 Stockholm, Sweden.
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6
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Park J, Lam SS, Park YK, Kim BJ, An KH, Jung SC. Fabrication of Ni/TiO 2 visible light responsive photocatalyst for decomposition of oxytetracycline. ENVIRONMENTAL RESEARCH 2023; 216:114657. [PMID: 36328223 DOI: 10.1016/j.envres.2022.114657] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/19/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
Nickel-impregnated TiO2 photocatalyst (NiTP) responding to visible light was prepared by the liquid phase plasma (LPP) method, and its photoactivity was evaluated in degrading an antibiotic (oxytetracycline, OTC). For preparing the photocatalyst, nickel was uniformly impregnated onto TiO2 (P-25) powder, and the nickel content increased as the number of LPP reactions increased. In addition, the morphology and lattice of NiTP were observed through various instrumental analyses, and it was confirmed that NiO-type nanoparticles were impregnated in NiTP. Fundamentally, as the amount of impregnated nickel in the TiO2 powder increased sufficiently, the band gap energy of TiO2 decreased, and eventually, the NiTP excited by visible light was synthesized. Further, OTC had a decomposition reaction pathway in which active radicals generated in OTC photocatalytic reaction under NiTP were finally mineralized through reactions such as decarboxamidation, hydration, deamination, demethylation, and dehydroxylation. In effect, we succeeded in synthesizing a photocatalyst useable under visible light by performing only the LPP single process and developed a new advanced oxidation process (AOP) that can remove toxic antibiotics.
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Affiliation(s)
- Jaegu Park
- Dept. of Environ. Eng., Sunchon Nat'l Univ., 255 Sunchon 57922, South Korea
| | - Su Shiung Lam
- Higher Institute Center of Excellences, Univ. Malaysia Terengganu, Kuala Neruss 21030, Malaysia
| | - Young-Kwon Park
- School of Environ. Eng., Univ. of Seoul, Seoul 02504, South Korea
| | - Byung-Joo Kim
- Dept. of Nano & Advanced Mater. Eng., Jeonju Univ., 303 Jeonju 55069, South Korea
| | - Kay-Hyeok An
- Dept. of Nano & Advanced Mater. Eng., Jeonju Univ., 303 Jeonju 55069, South Korea
| | - Sang-Chul Jung
- Dept. of Environ. Eng., Sunchon Nat'l Univ., 255 Sunchon 57922, South Korea.
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Qadir MI, Albo J, de Pedro I, Cieslar M, Hernández I, Brüner P, Grehl T, Castegnaro MV, Morais J, Martins PR, Silva CG, Nisar M, Dupont J. Nanoarchitectonics of CuNi bimetallic nanoparticles in ionic liquids for LED-assisted synergistic CO2 photoreduction. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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Payra S, Kanungo S, Roy S. Controlling C-C coupling in electrocatalytic reduction of CO 2 over Cu 1-xZn x/C. NANOSCALE 2022; 14:13352-13361. [PMID: 36069301 DOI: 10.1039/d2nr03634g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
From the perspective of sustainable environment and economic value, the electroreduction of CO2 to higher order multicarbon products is more coveted than that of C1 products, owing to their higher energy densities and a wider applicability. However, the reduction process remains extremely challenging due to the bottleneck of C-C coupling over the catalyst surfaces, and therefore designing a suitable catalyst for efficient and selective electrocatalytic reduction of CO2 is a need of the hour. With the target of producing C3+ products with higher selectivity, in this study we explored the nano-alloys of Cu1-xZnx as electrocatalysts for CO2 reduction. The nano-alloy Cu1-xZnx synthesized from the corresponding bimetallic metal organic framework materials demonstrated a gradual enhancement in the selectivity of acetone upon CO2 electroreduction with higher doping of Zn. The Cu1-xZnx alloy opened up a wide possibility of fine-tuning the electronic structure by shifting the position of the d-band centre and modulating the interaction with intermediate CO and thus enhanced the selectivity of desirable products, which might not have been accessible otherwise. The postulated molecular mechanism of CO2 electroreduction involving the desorption of the poorly adsorbed intermediate CO due to the presence of Zn and spilling over of free CO to Cu sites in the nano-alloy Cu1-xZnx for further C-C coupling to yield acetone was corroborated by the first principles studies.
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Affiliation(s)
- Soumitra Payra
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Hyderabad-500078, India.
| | - Sayan Kanungo
- Electrical and Electronics Engineering Department, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad-500078, India
- Materials Center for Sustainable Energy & Environment, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad-500078, India
| | - Sounak Roy
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Hyderabad-500078, India.
- Materials Center for Sustainable Energy & Environment, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad-500078, India
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Crystalline phase formation of Na2W2O7 using microwave-assisted solution combustion synthesis for photocatalytic degradation of organic pollutants from aqueous solutions. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131696] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wrzesińska A, Khort A, Witkowski M, Szczytko J, Ryl J, Gurgul J, Kharitonov DS, Łątka K, Szumiata T, Wypych-Puszkarz A. Structural, electrical, and magnetic study of La-, Eu-, and Er- doped bismuth ferrite nanomaterials obtained by solution combustion synthesis. Sci Rep 2021; 11:22746. [PMID: 34815455 PMCID: PMC8610975 DOI: 10.1038/s41598-021-01983-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 11/08/2021] [Indexed: 11/23/2022] Open
Abstract
In this work, the multiferroic bismuth ferrite materials Bi0.9RE0.1FeO3 doped by rare-earth (RE = La, Eu, and Er) elements were obtained by the solution combustion synthesis. Structure, electrical, and magnetic properties of prepared samples were investigated by X-ray photoelectron spectroscopy, Mössbauer spectroscopy, electrical hysteresis measurement, broadband dielectric spectroscopy, and SQUID magnetometry. All obtained nanomaterials are characterized by spontaneous electrical polarization, which confirmed their ferroelectric properties. Investigation of magnetic properties at 300.0 K and 2.0 K showed that all investigated Bi0.9RE0.1FeO3 ferrites possess significantly higher magnetization in comparison to bismuth ferrites obtained by different methods. The highest saturation magnetisation of 5.161 emu/g at 300.0 K was observed for the BLaFO sample, while at 2.0 K it was 12.07 emu/g for the BErFO sample. Several possible reasons for these phenomena were proposed and discussed.
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Affiliation(s)
| | - Alexander Khort
- KTH Royal Institute of Technology, Stockholm, Sweden. .,National University of Science and Technology "MISIS", Moscow, Russia.
| | | | - Jacek Szczytko
- University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Jacek Ryl
- Gdańsk University of Technology, 11/12 Narutowicza st, 80-233, Gdańsk, Poland
| | - Jacek Gurgul
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30239, Kraków, Poland
| | - Dmitry S Kharitonov
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30239, Kraków, Poland.,Research and Development Center of Technology for Industry, Ludwika Warynskiego 3A, 00645, Warsaw, Poland
| | - Kazimierz Łątka
- Marian Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Tadeusz Szumiata
- Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego Str. 54, 26-600, Radom, Poland
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Khort A, Hedberg J, Mei N, Romanovski V, Blomberg E, Odnevall I. Corrosion and transformation of solution combustion synthesized Co, Ni and CoNi nanoparticles in synthetic freshwater with and without natural organic matter. Sci Rep 2021; 11:7860. [PMID: 33846485 PMCID: PMC8042015 DOI: 10.1038/s41598-021-87250-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/24/2021] [Indexed: 11/09/2022] Open
Abstract
Pure metallic Co, Ni, and their bimetallic compositions of Co3Ni, CoNi, and CoNi3 nanomaterials were prepared by solution combustion synthesis. Microstructure, phase composition, and crystalline structure of these nanoparticles (NPs) were characterized along with studies of their corrosion and dissolution properties in synthetic freshwater with and without natural organic matter (NOM). The nanomaterials consisted of aggregates of fine NPs (3-30 nm) of almost pure metallic and bimetallic crystal phases with a thin surface oxide covered by a thin carbon shell. The nanomaterials were characterized by BET surface areas ranging from ~ 1 to 8 m2/g for the Ni and Co NPs, to 22.93 m2/g, 14.86 m2/g, and 10.53 m2/g for the Co3Ni, CoNi, CoNi3 NPs, respectively. More Co and Ni were released from the bimetallic NPs compared with the pure metals although their corrosion current densities were lower. In contrast to findings for the pure metal NPs, the presence of NOM increased the release of Co and Ni from the bimetallic NPs in freshwater compared to freshwater only even though its presence reduced the corrosion rate (current density). It was shown that the properties of the bimetallic nanomaterials were influenced by multiple factors such as their composition, including carbon shell, type of surface oxides, and the entropy of mixing.
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Affiliation(s)
- Alexander Khort
- Division of Surface and Corrosion Science, Department of Chemistry, KTH Royal Institute of Technology, Stockholm, Sweden.
- Center of Functional Nano-Ceramics, National University of Science and Technology "MISIS", Moscow, Russia.
| | - Jonas Hedberg
- Division of Surface and Corrosion Science, Department of Chemistry, KTH Royal Institute of Technology, Stockholm, Sweden
- Surface Science Western, Western University, London, Canada
| | - Nanxuan Mei
- Division of Surface and Corrosion Science, Department of Chemistry, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Valentin Romanovski
- Center of Functional Nano-Ceramics, National University of Science and Technology "MISIS", Moscow, Russia
- Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Eva Blomberg
- Division of Surface and Corrosion Science, Department of Chemistry, KTH Royal Institute of Technology, Stockholm, Sweden
- Division Bioscience and Materials, RISE Research Institutes of Sweden, Stockholm, Sweden
| | - Inger Odnevall
- Division of Surface and Corrosion Science, Department of Chemistry, KTH Royal Institute of Technology, Stockholm, Sweden.
- AIMES-Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Insitutet and KTH Royal Institute of Technology, Stockholm, Sweden.
- Department of Neuroscience, Karolinska Institutet, 171 77, Stockholm, Sweden.
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