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Xu Y, Cheng L, Wang Y, Jia H. Facile Synthesis of Novel Magnetic Janus Graphene Oxide for Efficient and Recyclable Demulsification of Crude Oil-in-Water Emulsion. Molecules 2024; 29:3307. [PMID: 39064886 PMCID: PMC11279671 DOI: 10.3390/molecules29143307] [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: 05/10/2024] [Revised: 07/09/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024] Open
Abstract
Nanoparticles have been widely applied to treat emulsion-containing wastewater in the form of chemical demulsifiers, such as SiO2, Fe3O4, and graphene oxide (GO). Owing to their asymmetric structures and selective adsorption, Janus nanoparticles show greater application potential in many fields. In the present work, the novel magnetic Janus graphene oxide (MJGO) nanoparticle was successfully prepared by grafting magnetic Fe3O4 to the surface of the JGO, and its demulsifying ability to treat a crude oil-in-water emulsion was evaluated. The MJGO structure and its magnetic intensity were verified by Fourier-transform infrared spectra (FTIR), transmission electron microscopy (TEM), X-ray diffraction (XRD), and magnetization saturation (MS) tests. Compared with GO and JGO, MJGO displayed the superior efficiency (>96%) to demulsify the crude oil-in-water emulsion, which can be attributed to the reduced electrostatic repulsion between MJGO and the emulsion droplets. Furthermore, the effects of pH and temperature on the demulsification performance of MJGO were also studied. Lastly, the recyclability of MJGO largely reduced the cost of demulsifiers in separating crude oil and water. The current research presents an efficient and recyclable demulsifier, which provides a new perspective for the structural design of nanomaterials and their application in the field of demulsification.
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Affiliation(s)
- Yingbiao Xu
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China; (Y.X.); (H.J.)
- Technology Inspection Center, Shengli Oilfield Company, SINOPEC, Dongying 257000, China
| | - Li Cheng
- School of Petroleum Engineering, Yangtze University, Wuhan 430100, China;
| | - Yefei Wang
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China; (Y.X.); (H.J.)
| | - Han Jia
- Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China), Ministry of Education, Qingdao 266580, China; (Y.X.); (H.J.)
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2
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Sabzi Dizajyekan B, Jafari A, Vafaie-Sefti M, Saber R, Fakhroueian Z. Preparation of stable colloidal dispersion of surface modified Fe 3O 4 nanoparticles for magnetic heating applications. Sci Rep 2024; 14:1296. [PMID: 38221547 PMCID: PMC10788351 DOI: 10.1038/s41598-024-51801-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 01/09/2024] [Indexed: 01/16/2024] Open
Abstract
The effect of surface modification on enhancing the magnetic heating behavior of magnetic nano fluids were investigated, for this purpose Fe3O4 nanoparticles were synthesized using co-precipitation method and surface modification was done using citric acid, ascorbic acid, tetraethyl orthosilicate (TEOS), polyvinyl alcohol (PVA) and polyethylene glycol (PEG). Experimental heating tests using AC magnetic field were done in the frequency of 100 kHz and different magnetic field (H) intensities. Theoretically the specific absorption rate (SAR) in magnetic nano fluids is independent of nanoparticles concentration but the experimental results showed different behavior. The theoretical SAR value @ H = 12kA.m-1 for Nano fluids containing bare Fe3O4 nanoparticles was 11.5 W/g but in experimental tests the obtained value was 9.72 W/g for nano fluid containing 20,000 ppm of dispersed nanoparticles. The experimental SAR calculation was repeated for sample containing 10,000 ppm of nanoparticles and the results showed increase in experimental SAR that is an evidence of nanoparticles agglomeration in higher concentrations. The surface modification has improved the dispersion ability of the nanoparticles. The Ratio of SAR, experimental, 20000ppm to SAR, experimental, 10000ppm was 0.85 for bare Fe3O4 nanoparticles dispersion but in case of surface modified nanoparticles this ratio has increased up to 0.98 that shows lower agglomeration of nanoparticles as a result of surface modification, although on the other hand the surface modification agents were magnetically passive and so it is expected that in constant concentration the SAR for bare Fe3O4 nanoparticles to be higher than this variable for surface modified nanoparticles. At lower concentrations the dispersions containing bare Fe3O4 nanoparticles showed higher SAR values but at higher concentrations the surface modified Fe3O4 nanoparticles showed better results although the active agent amount was lower at them. Finally, it should be noted that the nanoparticles that were surface modified using polymeric agents showed the highest decrease in experimental SAR amounts comparing theoretical results that was because of the large molecules of polymers comparing other implemented surface modification agents.
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Affiliation(s)
| | - Arezou Jafari
- Chemical Engineering Faculty, Tarbiat Modares University, Tehran, Iran.
| | | | - Reza Saber
- Advanced Medical Technologies and Equipment Institute, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Zahra Fakhroueian
- School of Chemical Engineering, College of Engineering, IPE, University of Tehran, P. O. Box 11155‑4563, Tehran, Iran
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3
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Cervera-Gabalda L, Gómez-Polo C. Magnetic carbon Fe 3O 4 nanocomposites synthesized via Magnetic Induction Heating. Sci Rep 2023; 13:7244. [PMID: 37142677 PMCID: PMC10160050 DOI: 10.1038/s41598-023-34387-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 04/28/2023] [Indexed: 05/06/2023] Open
Abstract
Magnetic Induction Heating (MIH) of magnetite nanoparticles is employed as a novel synthesis procedure of carbon based magnetic nanocomposites. Magnetic nanoparticles (Fe3O4) and fructose (1:2 weight ratio) were mechanically mixed and submitted to a RF magnetic field (305 kHz). The heat generated by the nanoparticles leads to the decomposition of the sugar and to the formation of an amorphous carbon matrix. Two sets of nanoparticles, with mean diameter sizes of 20 and 100 nm, are comparatively analysed. Structural (X-ray diffraction, Raman spectroscopy, Transmission Electron Microscopy (TEM)), electrical and magnetic (resistivity, SQUID magnetometry) characterizations confirm the nanoparticle carbon coating through the MIH procedure. The percentage of the carbonaceous fraction is suitably increased controlling the magnetic heating capacity of the magnetic nanoparticles. The procedure enables the synthesis of multifunctional nanocomposites with optimized properties to be applied in different technological fields. Particularly, Cr (VI) removal from aqueous media is presented employing the carbon nanocomposite with 20 nm Fe3O4 nanoparticles.
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Affiliation(s)
- L Cervera-Gabalda
- Departamento de Ciencias, Universidad Pública de Navarra, Campus de Arrosadia, 31006, Pamplona, Spain
- Institute for Advanced Materials and Mathematics (INAMAT2), Universidad Pública de Navarra, Campus de Arrosadia, 31006, Pamplona, Spain
| | - C Gómez-Polo
- Departamento de Ciencias, Universidad Pública de Navarra, Campus de Arrosadia, 31006, Pamplona, Spain.
- Institute for Advanced Materials and Mathematics (INAMAT2), Universidad Pública de Navarra, Campus de Arrosadia, 31006, Pamplona, Spain.
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Muzzi B, Lottini E, Yaacoub N, Peddis D, Bertoni G, de Julián Fernández C, Sangregorio C, López-Ortega A. Hardening of Cobalt Ferrite Nanoparticles by Local Crystal Strain Release: Implications for Rare Earth Free Magnets. ACS APPLIED NANO MATERIALS 2022; 5:14871-14881. [PMID: 36338325 PMCID: PMC9624260 DOI: 10.1021/acsanm.2c03161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 09/01/2022] [Indexed: 06/16/2023]
Abstract
In this work, we demonstrate that the reduction of the local internal stress by a low-temperature solvent-mediated thermal treatment is an effective post-treatment tool for magnetic hardening of chemically synthesized nanoparticles. As a case study, we used nonstoichiometric cobalt ferrite particles of an average size of 32(8) nm synthesized by thermal decomposition, which were further subjected to solvent-mediated annealing at variable temperatures between 150 and 320 °C in an inert atmosphere. The postsynthesis treatment produces a 50% increase of the coercive field, without affecting neither the remanence ratio nor the spontaneous magnetization. As a consequence, the energy product and the magnetic energy storage capability, key features for applications as permanent magnets and magnetic hyperthermia, can be increased by ca. 70%. A deep structural, morphological, chemical, and magnetic characterization reveals that the mechanism governing the coercive field improvement is the reduction of the concomitant internal stresses induced by the low-temperature annealing postsynthesis treatment. Furthermore, we show that the medium where the mild annealing process occurs is essential to control the final properties of the nanoparticles because the classical annealing procedure (T > 350 °C) performed on a dried powder does not allow the release of the lattice stress, leading to the reduction of the initial coercive field. The strategy here proposed, therefore, constitutes a method to improve the magnetic properties of nanoparticles, which can be particularly appealing for those materials, as is the case of cobalt ferrite, currently investigated as building blocks for the development of rare-earth free permanent magnets.
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Affiliation(s)
- Beatrice Muzzi
- Department
of Biotechnology, Chemistry and Pharmacy, University of Siena 1240, I-53100Siena, Italy
- ICCOM−CNR, I-50019Sesto Fiorentino, Italy
- Department
of Chemistry “U. Schiff”, University of Florence and INSTM, I-50019Sesto Fiorentino, Italy
| | - Elisabetta Lottini
- Department
of Chemistry “U. Schiff”, University of Florence and INSTM, I-50019Sesto Fiorentino, Italy
| | - Nader Yaacoub
- IMMM,
Université du Mans, CNRS UMR-6283, F-72085Le Mans, France
| | - Davide Peddis
- Department
of Chemistry and Industrial Chemistry, University
of Genoa, I-16146Genova, Italy
- ISM−CNR, I-00015Monterotondo
Scalo, Italy
| | | | | | - Claudio Sangregorio
- ICCOM−CNR, I-50019Sesto Fiorentino, Italy
- Department
of Chemistry “U. Schiff”, University of Florence and INSTM, I-50019Sesto Fiorentino, Italy
| | - Alberto López-Ortega
- Department
of Chemistry “U. Schiff”, University of Florence and INSTM, I-50019Sesto Fiorentino, Italy
- Departamento
de Ciencias, Universidad Pública
de Navarra, E-31006Pamplona, Spain
- Institute
for Advanced Materials and Mathematics, Universidad Pública de Navarra, E-31006Pamplona, Spain
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Mohamed‐Ibrahim NAB, Kheng Boong S, Zhong Ang Z, Shiuan Ng L, Tan JYC, Chong C, Kwee Lee H. Applying Magnetic‐Responsive Nanocatalyst‐Liquid Interface for Active Molecule Manipulation to Boost Catalysis Beyond Diffusion Limit. ChemCatChem 2022. [DOI: 10.1002/cctc.202200036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nur Amalina binte Mohamed‐Ibrahim
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Siew Kheng Boong
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Zhi Zhong Ang
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Li Shiuan Ng
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Jia Ying Charlene Tan
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Carice Chong
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
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