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Uflyand IE, Burlakova VE, Drogan EG, Zabiyaka IY, Kydralieva KA, Kugabaeva GD, Dzhardimalieva GI. Preparation of FeCo/C-N and FeNi/C-N Nanocomposites from Acrylamide Co-Crystallizates and Their Use as Lubricant Additives. MICROMACHINES 2022; 13:1984. [PMID: 36422412 PMCID: PMC9698813 DOI: 10.3390/mi13111984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/07/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
FeCo and FeNi nanoalloy particles encapsulated in a nitrogen-doped carbonized shell (FeCo/C-N and FeNi/C-N) were synthesized by thermolysis at 400 °C of polyacrylamide complexes after frontal polymerization of co-crystallizate of Fe and Co or Ni nitrates and acrylamide. During the thermolysis of polyacrylamide complexes in a self-generated atmosphere, Co(II) or Ni(II) and Fe(III) cations are reduced to form FeCo and FeNi nanoalloy particles, while polyacrylamide simultaneously forms a nitrogen-doped carbon shell layer. This unique architecture provides high chemical and thermal stability of the resulting nanocomposites. The average crystallite size of FeCo and FeNi nanoparticles is 10 and 12 nm, respectively. The nanocomposites were studied by X-ray diffraction, atomic force microscopy, scanning electron microscopy, and high-resolution transmission electron microscopy. The nanocomposites have been tested as antifriction and antiwear additives in lubricating oils. The optimal concentrations of nanoparticles were determined, at which the antifriction and antiwear properties of the lubricant manifest themselves in the best possible way.
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Affiliation(s)
- Igor E. Uflyand
- Department of Chemistry, Southern Federal University, 344006 Rostov-on-Don, Russia
| | - Victoria E. Burlakova
- Department of Chemistry, Don State Technical University, 344010 Rostov-on-Don, Russia
| | - Ekaterina G. Drogan
- Department of Chemistry, Don State Technical University, 344010 Rostov-on-Don, Russia
| | - Igor Yu. Zabiyaka
- Department of Chemistry, Don State Technical University, 344010 Rostov-on-Don, Russia
| | | | - Gulsara D. Kugabaeva
- Moscow Aviation Institute, National Research University, 125993 Moscow, Russia
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
| | - Gulzhian I. Dzhardimalieva
- Moscow Aviation Institute, National Research University, 125993 Moscow, Russia
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432 Moscow, Russia
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Coviello V, Forrer D, Amendola V. Recent Developments in Plasmonic Alloy Nanoparticles: Synthesis, Modelling, Properties and Applications. Chemphyschem 2022; 23:e202200136. [PMID: 35502819 DOI: 10.1002/cphc.202200136] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 05/02/2022] [Indexed: 01/07/2023]
Abstract
Despite the traditional plasmonic materials are counted on one hand, there are a lot of possible combinations leading to alloys with other elements of the periodic table, in particular those renowned for magnetic or catalytic properties. It is not a surprise, therefore, that nanoalloys are considered for their ability to open new perspectives in the panorama of plasmonics, representing a leading research sector nowadays. This is demonstrated by a long list of studies describing multiple applications of nanoalloys in photonics, photocatalysis, sensing and magneto-optics, where plasmons are combined with other physical and chemical phenomena. In some remarkable cases, the amplification of the conventional properties and even new effects emerged. However, this field is still in its infancy and several challenges must be overcome, starting with the synthesis (control of composition, crystalline order, size, processability, achievement of metastable phases and disordered compounds) as well as the modelling of the structure and properties (accuracy of results, reliability of structural predictions, description of disordered phases, evolution over time) of nanoalloys. To foster the research on plasmonic nanoalloys, here we provide an overview of the most recent results and developments in the field, organized according to synthetic strategies, modelling approaches, dominant properties and reported applications. Considering the several plasmonic nanoalloys under development as well as the large number of those still awaiting synthesis, modelling, properties assessment and technological exploitation, we expect a great impact on the forthcoming solutions for sustainability, ultrasensitive and accurate detection, information processing and many other fields.
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Affiliation(s)
- Vito Coviello
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, I-35131, Padova, Italy
| | - Daniel Forrer
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, I-35131, Padova, Italy
- CNR - ICMATE, I-35131, Padova, Italy
| | - Vincenzo Amendola
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, I-35131, Padova, Italy
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Siril PF, Türk M. Synthesis of Metal Nanostructures Using Supercritical Carbon Dioxide: A Green and Upscalable Process. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001972. [PMID: 33164289 DOI: 10.1002/smll.202001972] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 07/06/2020] [Indexed: 06/11/2023]
Abstract
Metallic nanostructures have numerous applications as industrial catalysts and sensing platforms. Supercritical carbon dioxide (scCO2 ) is a green medium for the scalable preparation of nanomaterials. Supercritical fluid reactive deposition (SFRD) and other allied techniques can be employed for the mass production of metal nanostructures for various applications. The present article reviews the recent reports on the scCO2 -assisted preparation of zero-valent metal nanomaterials and their applications. A brief description of the science of pure supercritical fluids, especially CO2 , and the basics of binary mixtures composed of scCO2 and a low volatile substance, e.g., an organometallic precursor are presented. The benefits of using scCO2 for preparing metal nanomaterials, especially as a green solvent, are also being highlighted. The experimental conditions that are useful for the tuning of particle properties are reviewed thoroughly. The range of modifications to the classical SFRD methods and the variety of metallic nanomaterials that can be synthesized are reviewed and presented. Finally, the broad ranges of applications that are reported for the metallic nanomaterials that are synthesized using scCO2 are reviewed. A brief summary along with perspectives about future research directions is also presented.
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Affiliation(s)
- Prem Felix Siril
- School of Basic Sciences, Indian Institute of Technology Mandi (IIT Mandi), Mandi, Himachal Pradesh, 175005, India
| | - Michael Türk
- Institut für Technische Thermodynamik and Kältetechnik, Karlsruhe Institute of Technology (KIT), Engler-Bunte-Ring 21, 76131, Karlsruhe, Germany
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Corsini C, Peeters S, Righi MC. Adsorption and Dissociation of Ni(acac) 2 on Iron by Ab Initio Calculations. J Phys Chem A 2020; 124:8005-8010. [PMID: 32881495 PMCID: PMC8011918 DOI: 10.1021/acs.jpca.0c05040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Among
metal β-diketonates, nickel acetylacetonate (Ni(acac)2) has been widely employed as a precursor for many chemical
structures, due to its catalytic properties. Here, we investigate,
by means of density functional theory (DFT) calculations, the adsorption
and dissociation of this complex: after an evaluation of the structural
and electronic properties of Ni(acac)2, a comparison between
different dissociation patterns reveals that the most favorable pattern
for the complex adsorbed on iron is different from the one suggested
by considering the strength of the bonds in the isolated complex and
an attempt to generalize this dissociation model is made in this work.
Moreover, the most favorable adsorption configurations turned out
to be a long bridge positioning of the nickel atom
along with an on top positioning of the oxygen atoms
of Ni(acac)2, while a short bridge positioning
is the most favorable for the central metallic unit alone.
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Affiliation(s)
- Chiara Corsini
- Department of Physics and Astronomy, Alma Mater Studiorum University of Bologna, Via Berti Pichat 6/2, 40127 Bologna, Italy
| | - Stefan Peeters
- Department of Physics and Astronomy, Alma Mater Studiorum University of Bologna, Via Berti Pichat 6/2, 40127 Bologna, Italy.,Department of Physics, Informatics and Mathematics, University of Modena and Reggio Emilia, I-41125 Modena, Italy
| | - M C Righi
- Department of Physics and Astronomy, Alma Mater Studiorum University of Bologna, Via Berti Pichat 6/2, 40127 Bologna, Italy
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6
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Supercritical deposition: Current status and perspectives for the preparation of supported metal nanostructures. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2014.09.036] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Kong CY, Siratori T, Wang G, Sako T, Funazukuri T. Binary Diffusion Coefficients of Platinum(II) Acetylacetonate in Supercritical Carbon Dioxide. JOURNAL OF CHEMICAL AND ENGINEERING DATA 2013; 58:2919-2924. [PMID: 24249918 DOI: 10.1021/je400313n] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 09/25/2013] [Indexed: 06/02/2023]
Abstract
Binary diffusion coefficients (D12) and retention factors (k) of platinum(II) acetylacetonate at infinitesimal concentration in supercritical (sc) carbon dioxide (CO2) were measured by the chromatographic impulse response method with a poly(ethylene glycol) coated capillary column at temperatures from (308.15 to 343.15) K and pressures from (8.5 to 40.0) MPa, and D12 in liquid ethanol at temperatures from (298.15 to 333.15) K and atmospheric pressure by the Taylor dispersion method. As has been seen for our previously reported data on other metal complexes measured in sc CO2 and organic solvents, the D12 data in sc CO2 and liquid ethanol were represented by a function of temperature and solvent viscosity. The D12 values for metal complexes were not related to the solute molecular weights. The k values in sc CO2 were expressed by a function of temperature and CO2 density.
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Affiliation(s)
- Chang Yi Kong
- Department of Applied Chemistry and Biochemical Engineering, Graduate School of Engineering, and Research Institute of Green Science and Technology, Shizuoka University , 3-5-1 Johoku Naka-ku, Hamamatsu 432-8561, Japan
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Puniredd SR, Jayaraman S, Yeong SH, Troadec C, Srinivasan MP. Stable Organic Monolayers on Oxide-Free Silicon/Germanium in a Supercritical Medium: A New Route to Molecular Electronics. J Phys Chem Lett 2013; 4:1397-1403. [PMID: 26282291 DOI: 10.1021/jz4005416] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Oxide-free Si and Ge surfaces have been passivated and modified with organic molecules by forming covalent bonds between the surfaces and reactive end groups of linear alkanes and aromatic species using single-step deposition in supercritical carbon dioxide (SCCO2). The process is suitable for large-scale manufacturing due to short processing times, simplicity, and high resistance to oxidation. It also allows the formation of monolayers with varying reactive terminal groups, thus enabling formation of nanostructures engineered at the molecular level. Ballistic electron emission microscopy (BEEM) spectra performed on the organic monolayer on oxide-free silicon capped by a thin gold layer reveals for the first time an increase in transmission of the ballistic current through the interface of up to three times compared to a control device, in contrast to similar studies reported in the literature suggestive of oxide-free passivation in SCCO2. The SCCO2 process combined with the preliminary BEEM results opens up new avenues for interface engineering, leading to molecular electronic devices.
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Affiliation(s)
- Sreenivasa Reddy Puniredd
- †Department of Chemical and Biomolecular Engineering, National University of Singapore, Engineering Drive 4, Singapore 117576
- ‡Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602
| | - Sundaramurthy Jayaraman
- †Department of Chemical and Biomolecular Engineering, National University of Singapore, Engineering Drive 4, Singapore 117576
| | - Sai Hooi Yeong
- †Department of Chemical and Biomolecular Engineering, National University of Singapore, Engineering Drive 4, Singapore 117576
| | - Cedric Troadec
- ‡Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602
| | - M P Srinivasan
- †Department of Chemical and Biomolecular Engineering, National University of Singapore, Engineering Drive 4, Singapore 117576
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Bronstein LM, Shifrina ZB. Dendrimers as encapsulating, stabilizing, or directing agents for inorganic nanoparticles. Chem Rev 2011; 111:5301-44. [PMID: 21718045 DOI: 10.1021/cr2000724] [Citation(s) in RCA: 250] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Bronstein LM, Shifrina ZB. Nanoparticles in dendrimers: From synthesis to application. ACTA ACUST UNITED AC 2009. [DOI: 10.1134/s1995078009090031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Puniredd SR, Nguan BCC, Srinivasan M. Covalent molecular assembly in supercritical carbon dioxide: Formation of nanoparticles in immobilized dendrimers within a porous silica gel matrix. J Colloid Interface Sci 2009; 333:679-83. [DOI: 10.1016/j.jcis.2008.10.084] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2008] [Revised: 10/02/2008] [Accepted: 10/02/2008] [Indexed: 10/21/2022]
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Puniredd SR, Yin CM, Hooi YS, Lee P, Srinivasan M. Dendrimer-encapsulated Pt nanoparticles in supercritical medium: Synthesis, characterization, and application to device fabrication. J Colloid Interface Sci 2009; 332:505-10. [DOI: 10.1016/j.jcis.2009.01.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2008] [Revised: 10/13/2008] [Accepted: 01/07/2009] [Indexed: 11/24/2022]
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