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Catalysts
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Catalysis Under Ultrasonic Irradiation
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Catalysis Under Ultrasonic Irradiation

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Environmental Catalysis".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 9999

Special Issue Editors

Dr. Prince Nana Amaniampong

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Guest Editor
Faculté des Sciences Fondamentales et Appliquées (UFR SFA), Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP, CNRS), University of Poitiers, Poitiers, France
Interests: sonochemistry; power ultrasound; ultrasonic application; green chemistry; eco-efficiency; clean processes; synthesis; catalysis; material preparation; polymers; biomass conversion; extraction; mechanisms
Special Issues, Collections and Topics in MDPI journals
Dr. Sabine Valange

E-Mail Website
Guest Editor
Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), UMR CNRS 7285, Université de Poitiers, Ecole Nationale Supérieure d'Ingénieurs de Poitiers, 1 Rue Marcel Doré, TSA 41105, CEDEX 9, 86073 Poitiers, France
Interests: catalyst synthesis; porous materials; nanostructured oxides; heterogeneous catalysis; selective oxidation; total oxidation; biomass valorization; ball-milling; ultrasound; sonochemistry; sonocatalysis; sustainable chemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The application of ultrasound waves to chemistry, called sonochemistry, has huge potential for innovation in eco-friendly and eco-efficient chemistry. Lately, the concept of sonocatalysis is attracting a lot of attention, where a synergistic effect between the catalyst and ultrasound occurs, paving the way for reactions that are usually not feasible under silent conditions. This synergistic effect between ultrasound and catalysis has been reported in the presence of solid catalysts. Indeed, the formation of cavitation bubbles preferentially occurs on a particle surface via heterogeneous nucleation.

This Special Issue welcomes the submission of original research papers and review articles that describes sonocatalytic applications with a green chemistry approach. Manuscripts that pay particular attention to demonstrating this aspect, related to specific points or the overall process, are particularly welcome. Submissions encompassing the 12 principles of green engineering, with notions of scale-up, energy consumption, and the design of equipment will also be appreciated. New combinations of power ultrasound with alternative liquid media (ionic liquids), microwave irradiation, enzyme, electrochemistry, or other technologies will be also considered.

Dr. Prince Nana Amaniampong
Dr. Sabine Valange
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sonocatalysis
  • ultrasound
  • cavitation
  • green chemistry

Published Papers (3 papers)

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Research

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21 pages, 11359 KiB  
Article
Ultrasound-Assisted Hydrothermal Synthesis of V2O5/Zr-SBA-15 Catalysts for Production of Ultralow Sulfur Fuel
by Jesús Miguel Ramos, Jin An Wang, Sergio Odin Flores, Lifang Chen, Ulises Arellano, Luis Enrique Noreña, Julio González and Juan Navarrete
Catalysts 2021, 11(4), 408; https://doi.org/10.3390/catal11040408 - 24 Mar 2021
Cited by 8 | Viewed by 2098
Abstract
This work reports the results of the ultrasound-assisted hydrothermal synthesis of two sets of V2O5 dispersed on SBA-15 and Zr doped SBA-15 catalysts used for the oxidation of dibenzothiophene (DBT) in a model diesel via the combination of oxidation, catalysis, [...] Read more.
This work reports the results of the ultrasound-assisted hydrothermal synthesis of two sets of V2O5 dispersed on SBA-15 and Zr doped SBA-15 catalysts used for the oxidation of dibenzothiophene (DBT) in a model diesel via the combination of oxidation, catalysis, and extraction technical route. These catalysts contained Lewis acidity as major and Brønsted acidity as minor. The amount of acidity varied with the content of vanadia and zirconium doping. It was found that DBT conversion is very sensitive to the Lewis acidity. DBT conversion increased by increasing the vanadium content and correlated well with the amount of surface Lewis acidity. Under the optimal experimental condition (Reaction temperature: 60 °C, reaction time 40 min, catalyst concentration: 1 g/L oil; H2O2/DBT mole ratio = 10), the 30% V2O5/SBA-15 and 30% V2O5/Zr-SBA-15 catalysts could convert more than 99% of DBT. Two reaction pathways of DBT oxidation involving vanadia surface structure, Lewis acidity, and peroxometallic complexes were proposed. When the vanadia loading V2O5 ≤ 10 wt%, the oxidative desulfurization (ODS) went through the Pathway I; in the catalysts with moderate vanadia content (V2O5 = 20–30 wt%), ODS proceeded via the Pathways II or/and the Pathway I. Full article
(This article belongs to the Special Issue Catalysis Under Ultrasonic Irradiation)
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13 pages, 3432 KiB  
Article
Enhancement of Sono-Fenton by P25-Mediated Visible Light Photocatalysis: Analysis of Synergistic Effect and Influence of Emerging Contaminant Properties
by Lanyue Qi, Wenyuan Lu, Gengxu Tian, Yang Sun, Jiangang Han and Lijie Xu
Catalysts 2020, 10(11), 1297; https://doi.org/10.3390/catal10111297 - 10 Nov 2020
Cited by 7 | Viewed by 1740
Abstract
The main purpose is to figure out the involved synergistic effects by combining sono-Fenton using in situ generated H2O2 and the photocatalytic process of P25 under visible light (Vis/P25). Two emerging contaminants, dimethyl phthalate (DMP) and diethyl phthalate (DEP), with [...] Read more.
The main purpose is to figure out the involved synergistic effects by combining sono-Fenton using in situ generated H2O2 and the photocatalytic process of P25 under visible light (Vis/P25). Two emerging contaminants, dimethyl phthalate (DMP) and diethyl phthalate (DEP), with similar structure but different properties were selected to examine the influence of hydrophilic and hydrophobic properties of target pollutants. Results show that there is synergy between sono-Fenton and Vis/P25, and more significant synergy can be obtained with low dose of Fe3+ or Fe2+ (0.02 mM) and for more hydrophilic DMP. Based on systematic analysis, the primary mechanism of the synergy is found to be the fast regeneration of Fe2+ by photo-electrons from P25 photocatalysis, which plays the dominant role when the Fe3+/Fe2+ concentration is low (0.02 mM). However, at high Fe3+/Fe2+ concentration (0.5 mM), the photoreduction of Fe(III) to Fe2+ can play a key role with relatively low efficiency. By studying the degradation intermediates of both DMP and DEP, the degradation pathways can be determined as the hydroxylation of aromatic ring and the oxidation of the aliphatic chain. Better mineralization performance is achieved for DMP than that for DEP due to the enhanced utilization efficiency of H2O2 by accelerating Fe2+ regeneration. Full article
(This article belongs to the Special Issue Catalysis Under Ultrasonic Irradiation)
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Review

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22 pages, 7449 KiB  
Review
Sonochemical and Sonoelectrochemical Production of Energy Materials
by Faranak Foroughi, Jacob J. Lamb, Odne S. Burheim and Bruno G. Pollet
Catalysts 2021, 11(2), 284; https://doi.org/10.3390/catal11020284 - 21 Feb 2021
Cited by 26 | Viewed by 5151
Abstract
Sonoelectrochemistry is the combination of ultrasound and electrochemistry which provides many advantages in electrochemistry, such as fast reaction rates, surface cleaning and activation, and increased mass transport at an electrode. Due to the advantages, some efforts have been made in order to benefit [...] Read more.
Sonoelectrochemistry is the combination of ultrasound and electrochemistry which provides many advantages in electrochemistry, such as fast reaction rates, surface cleaning and activation, and increased mass transport at an electrode. Due to the advantages, some efforts have been made in order to benefit sonoelectrochemistry in the field of energy and environmental engineering. This review paper highlights the developed progress of the application of sonoelectrochemistry in the production of hydrogen, electrocatalyst materials and electrodes for fuel cells and semiconductor photocatalyst materials. This review also provides the experimental methods that are utilized in several sonoelectrochemical techniques, such as different set-ups generally used for the synthesis of energy-related materials. Different key parameters in the operation of sonoelectrochemical synthesis including ultrasonication time, ultrasound frequency and operation current have been also discussed. There are not many research articles on the sonoelectrochemical production of materials for supercapacitors and water electrolyzers which play crucial roles in the renewable energy industry. Therefore, at the end of this review, some articles which have reported the use of ultrasound for the production of electrocatalysts for supercapacitors and electrolyzers have been reviewed. The current review might be helpful for scientists and engineers who are interested in and working on sonoelectrochemistry and electrocatalyst synthesis for energy storage and energy conversion. Full article
(This article belongs to the Special Issue Catalysis Under Ultrasonic Irradiation)
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