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Kumar VB, Gedanken A, Porat Z. Sonochemistry of molten gallium. ULTRASONICS SONOCHEMISTRY 2023; 95:106364. [PMID: 36990048 PMCID: PMC10457574 DOI: 10.1016/j.ultsonch.2023.106364] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 03/08/2023] [Accepted: 03/08/2023] [Indexed: 06/19/2023]
Abstract
This review article summarizes the comprehensive work that was done in our laboratory in recent years, as-well-as other reports, on the various aspects of sonochemistry of molten gallium. The low mp (29.8 °C) of gallium enables its melting in warm water, aqueous solutions and organic liquids. This opened a new research direction that focused on the chemical and physical properties of gallium particles that were formed in such media. It includes their interactions with water and with organic and inorganic solutes in aqueous solutions and with carbon nanoparticles. Formation of nanoparticles of liquid gallium alloys was also reported.
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Affiliation(s)
| | - Aharon Gedanken
- Department of Chemistry and the BINA Center, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Ze'ev Porat
- Department of Chemistry, Nuclear Research Center-Negev, P.O. Box 9001, Be'er-Sheva 84190, Israel; Department of Civil and Environmental Engineering, the Ben-Gurion University of the Negev, Be'er-Sheva, Israel.
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2
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Lo Fiego MJ, Lorenzetti AS, Silbestri GF, Domini CE. The use of ultrasound in the South Cone region. Advances in organic and inorganic synthesis and in analytical methods. ULTRASONICS SONOCHEMISTRY 2021; 80:105834. [PMID: 34814046 PMCID: PMC8608658 DOI: 10.1016/j.ultsonch.2021.105834] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 10/30/2021] [Accepted: 11/13/2021] [Indexed: 05/25/2023]
Abstract
In organic and inorganic synthesis and in analytical methods, an external conventional heat source is usually applied to carry out a chemical reaction at a high temperature, or an extraction procedure. In the last decades, the use of ultrasound as an alternative energy source has become an interesting field of research in these topics in the South Cone region (Argentina, Chile, Uruguay, Southern Brazil and Paraguay). For this reason, the present review, covering the period 2009 to mid-2021, is a compilation of ultrasound-assisted synthetic and analytical methodologies.
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Affiliation(s)
- Marcos J Lo Fiego
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, Bahía Blanca 8000, Argentina
| | - Anabela S Lorenzetti
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, Bahía Blanca 8000, Argentina
| | - Gustavo F Silbestri
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, Bahía Blanca 8000, Argentina.
| | - Claudia E Domini
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, Bahía Blanca 8000, Argentina.
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3
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Ghobashy MM, Elbarbary AM, Hegazy DE. Synthesis of poly (vinylpyrrolidone)/Fe
3
O
4
@SiO
2
nanoporous catalyst by
γ
‐rays and evaluation their sono‐photo‐Fenton degradation of toluidine blue under magnetic field. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mohamed Mohamady Ghobashy
- Radiation Research of Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT) Egyptian Atomic Energy Authority (EAEA) Cairo Egypt
| | - Ahmed M. Elbarbary
- Radiation Research of Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT) Egyptian Atomic Energy Authority (EAEA) Cairo Egypt
| | - Dalia E. Hegazy
- Radiation Research of Polymer Chemistry Department, National Center for Radiation Research and Technology (NCRRT) Egyptian Atomic Energy Authority (EAEA) Cairo Egypt
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4
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Fernández GA, Schiel MA, Silbestri GF. On the catalytic activation of water-soluble NHC-Au(I) complexes by sonication and microwave irradiation: A comparative assessment. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121452] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Kilbas B, Ergen S, Cakici D. Highly Efficient and Reusable Pd/AlO(OH) Catalyzed Synthesis of Acridinedione Derivatives. CURRENT ORGANOCATALYSIS 2019. [DOI: 10.2174/2213337206666190701130253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Background:
Synthesis of acridinedione derivatives via one-pot multi-component approaches
using highly active and reusable Pd/AlO(OH) heterogenous catalyst was studied. This process
provided a convenient method to obtain various acridinediones with potential biological activities.
The reactions were performed in mild conditions such as low temperature and short reaction
time with desirable yields.
Methods:
Commercially available Pd/AlO(OH) nanoparticles characterized by XRD and SEM methods
were afforded for the synthesis of acridinedione derivatives with high yields. Crude products
were analyzed by GC and 1H NMR. The reactions were completed within 1h at 40°C by the assistance
of ultrasound system.
Results:
Optimization of reaction conditions is of critical case for successful synthesis. Solvent, temperature,
time and amount of catalyst were studied. At the end of the experiments, the synthesis of 1
mmol of acridinedione was optimized by using 25 mg of Pd/AlO(OH) NPs, 3 ml of DMF for 60 min
at 40°C in the ultrasound system. An experimental work to check the reusability of the catalyst was
also studied. Pd/Al(O)OH catalyst in the first run was higher than that of the reused catalyst in the
fifth run. ICP-OES analyses showed palladium leaching into the reaction medium was only 1.1%
which is negligible. Nanocatalyst employed a high activity and good reusability.
Conclusion:
A convenient and versatile method was developed for the synthesis of acridinediones in
a mild condition with absolute conversion and high yield using ultrasound system in the presence of
nanocatalyst.
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Affiliation(s)
- Benan Kilbas
- Moltek A.S. Gebze Organize Sanayi, 41400 Gebze, Kocaeli, Turkey
| | - Sinem Ergen
- Department of Chemistry, Faculty of Sciences, Duzce University, 81620 Duzce, Turkey
| | - Davut Cakici
- Department of Chemistry, Faculty of Sciences, Duzce University, 81620 Duzce, Turkey
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Abstract
In this review paper, we have assembled the main characteristics of partial oxidation reactions (oxidative dehydrogenation and selective oxidation to olefins or oxygenates, as aldehydes and carboxylic acids and nitriles), as well as total oxidation, particularly for depollution, environmental issues and wastewater treatments. Both gas–solid and liquid–solid media have been considered with recent and representative examples within these fields. We have also discussed about their potential and prospective industrial applications. Particular attention has been brought to new raw materials stemming from biomass, as well as to liquid–solid catalysts cases. This review paper also summarizes the progresses made in the use of unconventional activation methods for performing oxidation reactions, highlighting the synergy of these technologies with heterogeneous catalysis. Focus has been centered on both usual catalysts activation methods and less usual ones, such as the use of ultrasounds, microwaves, grinding (mechanochemistry) and photo-activated processes, as well as their combined use.
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Stucchi M, Bianchi CL, Argirusis C, Pifferi V, Neppolian B, Cerrato G, Boffito DC. Ultrasound assisted synthesis of Ag-decorated TiO 2 active in visible light. ULTRASONICS SONOCHEMISTRY 2018; 40:282-288. [PMID: 28946426 DOI: 10.1016/j.ultsonch.2017.07.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/08/2017] [Accepted: 07/08/2017] [Indexed: 05/12/2023]
Abstract
Titanium dioxide is the most popular photocatalyst to degrade organic pollutants in air, as well as in water. The principal drawback preventing its commercial application lies in its limited absorption of the visible light (400-700nm), while it is active under UV irradiation (≤387nm). Supporting noble metals in the form of nanoparticles on TiO2 increases its activity in the visible range. However, both the synthesis of noble metal nanoparticles and their deposition on TiO2 are multi-step processes that often require organic solvents. Here, we deposit Ag nanoparticles from AgNO3 on the surface of micrometric TiO2 with H2O as a solvent and under ultrasound irradiation at 30Wcm-2. Ultrasound increases the surface amount of Ag on TiO2 with heterogeneous size distribution of Ag nanoparticles, which are bigger and overlaid (1-20nm vs. 0.5-3nm) compared to the sample obtained in traditional conditions (TEM images). While this change in morphology had no effect on acetone photodegradation under UV light, the 5%, 10%, and 20% Ag-TiO2 degraded 17%, 20% and 24% acetone under visible light, respectively. The 10% by weight Ag-TiO2 sample obtained in absence of ultrasound only degraded 14% acetone in 6h, while the bare TiO2 was not active.
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Affiliation(s)
- M Stucchi
- Polytechnique Montréal, Département de Génie Chimique, 2900 Edouard Montpetit Blvd, H3C 3A4 Montrèal (QC), Canada; Università di Milano, Chemistry Department, Via Golgi 19, 20133 Milano, Italy.
| | - C L Bianchi
- Università di Milano, Chemistry Department, Via Golgi 19, 20133 Milano, Italy
| | - C Argirusis
- National Technical University of Athens, School of Chemical Engineering, Athens, Greece
| | - V Pifferi
- Università di Milano, Chemistry Department, Via Golgi 19, 20133 Milano, Italy
| | - B Neppolian
- SRM University, SRM Research Institute, Chennai, India
| | - G Cerrato
- Università di Torino & NIS Inter-departmental Centre, Torino, Italy
| | - D C Boffito
- Polytechnique Montréal, Département de Génie Chimique, 2900 Edouard Montpetit Blvd, H3C 3A4 Montrèal (QC), Canada
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Valange S, Chatel G, Amaniampong PN, Behling R, Jérôme F. Ultrasound-Assisted Synthesis of Nanostructured Oxide Materials. ACTA ACUST UNITED AC 2018. [DOI: 10.4018/978-1-5225-3903-2.ch007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
This chapter is focused on the use of high intensity ultrasound for the preparation of nanostructured materials with an emphasis on recent prominent examples of the production of dense or porous metal oxides through sonochemical and ultrasonic spray pyrolysis routes. Sonochemistry enables the synthesis of oxides that are often unachievable by traditional methods or affords known materials with shape, size, and nano/microstructure control under fast reaction conditions. The fundamental principles of acoustic cavitation, as well as the main ultrasonic parameters affecting the cavitation phenomenon, are first summarized. Next, the applications of ultrasound in the synthesis of nanostructured oxide materials following both preparation methods are reviewed. Particular focus is given to the ultrasound-assisted synthesis of metal oxide nanoparticles for energy applications.
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