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Coatings
Special Issues
Designs, Preparations and Applications of Catalyst Materials
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Designs, Preparations and Applications of Catalyst Materials

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Characterization, Deposition and Modification".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 7478

Special Issue Editors

Dr. Dong Liu

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Shenzhen University, Shenzhen 518000, China
Interests: photo(electro)catalyst; energy conversion; fuel cell; catalytic mechanism
Special Issues, Collections and Topics in MDPI journals
Dr. Haoqiang Ai

E-Mail Website
Guest Editor
Faculty of Science and Technology, University of Macau, Macao 999078, China
Interests: photo(electro)catalysts; first-principles calculation; excited carrier dynamics; molecular dynamics; catalytic mechanism

Special Issue Information

Dear Colleagues,

A catalyst is a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction. During a chemical reaction, the bonds between the atoms in molecules are broken, rearranged, and rebuilt, recombining the atoms into new molecules. Catalysts make this process more efficient by lowering the activation energy, which is the energy barrier that must be surmounted for a chemical reaction to occur. As a result, catalysts make it easier for atoms to break and form chemical bonds to produce new combinations and new substances. Over the past several decades, scientists have developed increasingly specialized catalysts for essential real-world applications. In particular, powerful catalysts have transformed the chemical industry. These advances have led to environmentally friendly energy conversion, biodegradable plastics, new pharmaceuticals, etc.

Therefore, we would like to invite you to submit your original research to this Coatings Special Issue entitled “Designs, Preparations and Applications of Catalyst Materials”. The scope of this Special Issue includes all aspects of research related to catalysis, including theoretical, experimental and application-oriented papers, as well as reviews.

In particular, the topics of interest include but are not limited to:

  • Heterogeneous catalysis;
  • Homogeneous catalysis;
  • Electrocatalysts;
  • Photocatalysts;
  • Thermocatalysts;
  • Enzymes and biocatalysts;
  • Any other aspects of catalysis.

Dr. Dong Liu
Dr. Haoqiang Ai
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. Coatings 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 2600 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

  • catalysis
  • catalytic mechanism
  • computational chemistry
  • nanochemistry
  • theory modeling

Published Papers (4 papers)

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Editorial

Jump to: Research

3 pages, 172 KiB  
Editorial
Direct Electrolytic Splitting of Seawater: Significance and Challenges
by Dong Liu and Zhenbo Wang
Coatings 2022, 12(8), 1179; https://doi.org/10.3390/coatings12081179 - 15 Aug 2022
Cited by 3 | Viewed by 1529
Abstract
The rapid development of the world economy and human society has accelerated the consumption of fossil fuels and presents a series of critical problems, such as environmental pollution, energy shortages and global warming [...] Full article
(This article belongs to the Special Issue Designs, Preparations and Applications of Catalyst Materials)

Research

Jump to: Editorial

16 pages, 4294 KiB  
Article
An Alternative Methodology for the Evaluation of Photocatalytic Activity of Polymeric Coatings by Monitoring Dye Degradation
by Xabier Sandua, Pedro J. Rivero, José F. Palacio, Joseba Esparza and Rafael Rodríguez
Coatings 2022, 12(10), 1529; https://doi.org/10.3390/coatings12101529 - 12 Oct 2022
Cited by 3 | Viewed by 1313
Abstract
This work provides an alternative method for evaluating the photodegradation behaviour of different types of dyes such as Methylene Blue, Rhodamine B, Congo Red, Metanil Yellow, and Malachite Green. In this methodology, the coating is dyed with the chosen colorant and two beams [...] Read more.
This work provides an alternative method for evaluating the photodegradation behaviour of different types of dyes such as Methylene Blue, Rhodamine B, Congo Red, Metanil Yellow, and Malachite Green. In this methodology, the coating is dyed with the chosen colorant and two beams of light are combined and channelled to a spot on the dyed coating through an optical fibre, the first one from an ultraviolet (UV) source (which is the responsible of activating photocatalysis) and the second one from a Visible light source, which is employed to monitor changes in colour along the time. The photocatalytic coating selected for testing this methodology consists of a mat of electrospun poly (acrylic acid) (PAA) fibres that acts as base film, furtherly coated by using layer-by-layer (LbL) assembly technique for the immobilization of two different photocatalytic metal oxide precursors (TiO2 and Fe2O3) nanoparticles. The morphological characterization of the samples has been implemented by means of scanning electron microscopy (SEM), confocal microscopy, and water contact angle measurements in order to analyse the resultant thickness, roughness, electrospun fibre diameter, and wettability. The experimental results clearly demonstrate the validity of the methodology to measure the photocatalytic activity in all dyed coatings, although significant differences have been observed depending on the selected dye. Full article
(This article belongs to the Special Issue Designs, Preparations and Applications of Catalyst Materials)
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12 pages, 2547 KiB  
Article
A Hollow Silicon Nanosphere/Carbon Nanotube Composite as an Anode Material for Lithium-Ion Batteries
by Hao Tang, Yuanyuan Xu, Li Liu, Decheng Zhao, Zhen Zhang, Yutong Wu, Yi Zhang, Xiang Liu and Zhoulu Wang
Coatings 2022, 12(10), 1515; https://doi.org/10.3390/coatings12101515 - 10 Oct 2022
Cited by 4 | Viewed by 1856
Abstract
Silicon possesses a high theoretical specific capacity and is a promising high-performance anode material for lithium-ion batteries (LIBs). However, it shows a poor cycling performance because of volume expansion. A hollow structure can improve Si cycling performance, and the template method is one [...] Read more.
Silicon possesses a high theoretical specific capacity and is a promising high-performance anode material for lithium-ion batteries (LIBs). However, it shows a poor cycling performance because of volume expansion. A hollow structure can improve Si cycling performance, and the template method is one of the most common methods for hollow micro/nanosphere preparation. A polystyrene (PS) microsphere has the advantages of having a uniform and controllable particle size, easy modification, and high stability, thus being an ideal template for preparing hollow structure material. Herein, PS microspheres are used as templates to obtain hollow silica spheres, and then obtain hollow silicon spheres with an inner pore diameter of ~50 nm by a magnesium thermal reduction method. Lithium-ion battery anode material is obtained using carbon nanotubes supporting hollow silicon spheres (Si-CNTs). Si-CNTs exhibit excellent cycling performance (1188 mAh g−1 after 200 cycles) and excellent rate capability (484 mAh g−1 at 1 A g−1). Hollow porous Si-CNTs show great potential, providing a promising idea for solving the volume expansion problem of Si. Full article
(This article belongs to the Special Issue Designs, Preparations and Applications of Catalyst Materials)
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11 pages, 8644 KiB  
Article
Photocatalytic Inactivation of Bacillus subtilis Spores by Natural Sphalerite with Persulfate under Visible Light Irradiation
by Yan Liu, Zhenni Liu, Dong Liu and Wanjun Wang
Coatings 2022, 12(4), 528; https://doi.org/10.3390/coatings12040528 - 13 Apr 2022
Cited by 1 | Viewed by 1712
Abstract
Bacterial spores are highly resistant to be inactivated by conventional water disinfection methods. In this study, the inactivation efficiency and mechanisms of Bacillus subtitles (B. subtilis) spores by natural sphalerite (NS) with persulfate (PS) under visible light (Vis) irradiation were investigated [...] Read more.
Bacterial spores are highly resistant to be inactivated by conventional water disinfection methods. In this study, the inactivation efficiency and mechanisms of Bacillus subtitles (B. subtilis) spores by natural sphalerite (NS) with persulfate (PS) under visible light (Vis) irradiation were investigated for the first time. The NS was composed of ZnS doped with trace amounts of metal ions, including As, Fe, Cd, and Mn. The results showed that 7 log of B. subtilis spores could be completely inactivated within 5 h in the Vis/NS/PS photocatalytic system, and the inactivation efficiency was about four and seven times higher than that of the NS/PS system and the Vis/PS system, respectively. The photo-generated electrons are generated by the excitation of NS under the illumination activated PS to form PS radicals (∙SO4−) and hydroxyl radicals (∙OH), which are the main active species for spore inactivation. Mechanism studies further showed that spore inactivation was related to physiological responses, including the increase in intracellular reactive oxygen species, the change of induced antioxidant enzyme activity, and the change of total protein. Furthermore, the dynamic changes of cells during spore inactivation were observed by SEM. These results not only clarify the relationship between the cell physiological stress response and inactivation mechanism of spores, but also reveal the interaction between minerals and PS under Vis, which provides technical methods for the inactivation of bacterial spores in the field of water disinfection. Full article
(This article belongs to the Special Issue Designs, Preparations and Applications of Catalyst Materials)
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