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Coatings
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Adsorption Performance of Hybrid Materials and Composites
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Adsorption Performance of Hybrid Materials and Composites

A special issue of Coatings (ISSN 2079-6412).

Deadline for manuscript submissions: closed (20 November 2023) | Viewed by 5529

Special Issue Editor

Dr. Maciej Fronczak

E-Mail Website
Guest Editor
Department of Molecular Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, 93-005 Łódź, Poland
Interests: graphitic carbon nitride; carbon nanomaterials; core–shell nanomaterials; thermal plasma; non-equilibrium plasma; adsorption; thin film; chemical vapor deposition; nanotechnology; chemistry

Special Issue Information

Dear Colleagues,

Research on materials consisting of two or more phases has developed rapidly in recent decades. Composites and hybrid materials have been investigated worldwide. Among these numerous reports, one can find some related to environmental protection and wastewater treatment. Adsorption processes are still applied in a broad range of industry branches. However, there is still the possibility of enriching the adsorbents with additional functional phases. For example, the use of core–shell materials, where the core comprises a magnetic phase and the shell is made of functionalized carbon for the removal of inorganic ions, is well known. Another example is the application of materials coated with mesoporous silica or graphitic carbon nitride.

In view of this, we inaugurate this new Special Issue of Coatings. Contributions will cover research on the adsorption performance of composites and hybrid materials, where coating plays the main role in adsorption. We are also looking for review papers on this topic.

The scope of this Special Issue will serve as a forum for papers on the following topics:

  • Theoretical and experimental research, knowledge, and new ideas in the adsorption performance of hybrid materials and composites.
  • Recent developments in surface engineering of silica-coated or carbon-coated metallic nanoparticles for application in adsorption.
  • Recent developments in the chemical vapor deposition of materials onto a wide range of supports for adsorption.
  • The application of core–shell composites in the removal of a variety of contaminants.
  • Chemical functionalization of the surface of composites and nanocomposites to develop adsorption performance.
  • Application of graphitic carbon nitride-coated materials in the adsorptive removal of inorganic ions.

We look forward to receiving your contribution.

Dr. Maciej Fronczak
Guest Editor

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

  • carbon-coated metallic nanoparticles
  • wastewater treatment
  • removal of contaminants onto composites
  • adsorption performance of coatings
  • graphitic carbon nitride-based composites

Published Papers (3 papers)

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Research

10 pages, 2193 KiB  
Article
Engineering Stable and Affordable Meta-Aluminate Intercalated Mafic Hydrotalcite for Superior Bromate Remediation
by Jianyu Wu and Dongsu Bi
Coatings 2023, 13(7), 1265; https://doi.org/10.3390/coatings13071265 - 19 Jul 2023
Viewed by 966
Abstract
In this study, one type of layered double hydroxide (LDH), the meta-aluminate intercalated mafic-modified hydrotalcite (LDH-2), was engineered through an unprecedentedly facile, affordable one-step procedure. In the interest of meticulous perception regarding our superior strategy, the conventional two-step synthesis method—the fabrication of optimal [...] Read more.
In this study, one type of layered double hydroxide (LDH), the meta-aluminate intercalated mafic-modified hydrotalcite (LDH-2), was engineered through an unprecedentedly facile, affordable one-step procedure. In the interest of meticulous perception regarding our superior strategy, the conventional two-step synthesis method—the fabrication of optimal mafic-modified hydrotalcite through the coprecipitation and roasting process followed by a second aging step (LDH-1)—was also synthesized. After scrutinization of as-derived nanostructures, the adsorption capacity of both structures for bromate remediation was elaborated. When the effect of experimental variation was optimized and the impact of various ions was investigated, the more astounding performance of LDH-2 (0.97 mg/g) was detected when compared with conventional LDH-1 (0.90 mg/g). Therefore, the novel approach for the engineering of meta-aluminate intercalated mafic hydrotalcite not only introduces facile and practical procedures, but also furnishes a much more efficient adsorption system. In the matter of structure durability, the as-synthesized LDH-2 presented exceptional resistance, maintaining activity after five consecutive cycling runs. This investigation sheds light on the facile and affordable synthesis of the LDH construction. Full article
(This article belongs to the Special Issue Adsorption Performance of Hybrid Materials and Composites)
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11 pages, 4116 KiB  
Article
A Study on the Improvement of the Photothermal Characteristics of the Adsorbent for Sorption-Based Atmospheric Water Harvesting Driven by Solar
by Jiangbo Wu, Ziyi Sui, Xiaoze Du, Yaocong Zhang and Tao Ma
Coatings 2023, 13(1), 154; https://doi.org/10.3390/coatings13010154 - 11 Jan 2023
Cited by 3 | Viewed by 1535
Abstract
Facing the global freshwater resource crisis, using solar energy to produce fresh water resources in an environmentally friendly way, sorption-based atmospheric water harvesting driven by solar technology has attracted increasingly more attention. In the current research, the adsorbent MOF-801 has the advantages of [...] Read more.
Facing the global freshwater resource crisis, using solar energy to produce fresh water resources in an environmentally friendly way, sorption-based atmospheric water harvesting driven by solar technology has attracted increasingly more attention. In the current research, the adsorbent MOF-801 has the advantages of a high adsorption capacity and is suitable for fields with a wide range of humidity. However, the strong interaction between the adsorbent and water molecules is conducive to rapid moisture absorption, but at the same time, the adsorbent needs higher heat to achieve regeneration, which restricts the practical application of the adsorbent. Based on the principle that carbon materials can improve the photothermal conversion performance of adsorbent, this paper prepared three composite adsorbents with MOF-801 and three different carbon materials, characterized the structure and morphology of each adsorbent, and compared the effects of different carbon materials on the performance of MOF-801 adsorbent. Among them, the photothermal characteristics of MOF-801/CNT adsorbent proposed in this paper are most significantly improved. The experiment shows that compared with MOF-801/G, the adsorption capacity is increased by 30%, and the desorption speed is increased by 50%. It maximizes water withdrawals over a period of time in arid environments. Full article
(This article belongs to the Special Issue Adsorption Performance of Hybrid Materials and Composites)
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18 pages, 3991 KiB  
Article
Green Nanocomposite for the Adsorption of Toxic Dyes Removal from Colored Waters
by Ishaa Akbar, Muhammad Asif Hanif, Umer Rashid, Ijaz Ahmad Bhatti, Rais Ahmad Khan and Elham Ahmed Kazerooni
Coatings 2022, 12(12), 1955; https://doi.org/10.3390/coatings12121955 - 13 Dec 2022
Cited by 9 | Viewed by 2014
Abstract
The discharge of dyes from textile industries led to a broad range of toxicological and environmental effects, posing severe health issues for humans and animals worldwide. These dyes are highly stable and, if not adequately treated, remain in the environment for extended periods. [...] Read more.
The discharge of dyes from textile industries led to a broad range of toxicological and environmental effects, posing severe health issues for humans and animals worldwide. These dyes are highly stable and, if not adequately treated, remain in the environment for extended periods. Adsorption, the most efficient and cost-effective method, offers unique advantages for using natural adsorbents, such as marble waste composites, for dye removal. The easy availability of marble waste, its low cost, its eco-friendly nature, its ease of operation, its simplicity of design, its flexibility, and its great affinity for dyes make it a suitable option for dye removal. Golden marble waste nanocomposites are prepared for dye removal. The results from the studies suggested that treated golden marble composite materials exhibit better adsorption efficiency (224.8, 299.5, and 369.2 mg/g) for adsorptive removal of dyes than untreated golden marble composite materials (114.4 mg/g). This research also used isothermic and kinetic models to evaluate the effects of numerous parameters, for example, the initial dye concentration, pH, time, temperature, and adsorbent dose. The highest removal of 369.9 mg/g was achieved during the present study for blue dye at an optimized pH of 7 and a temperature of 30 °C. It was observed that golden marble waste composites gave better R2 (0.99) values for second-order kinetics in the kinetic model. Results obtained from comparing Langmuir, Freundlich, Temkin, Dubinin, and Herkin Jura isotherms showed that the R2 values of the Langmuir isotherm for Foron red (0.97), the Temkin isotherm for Foron blue (0.98), and the Freundlich isotherm for Foron black dye (0.97) fit on adsorption for both treated and untreated composites. Characterization techniques, such as scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), are also discussed for the structural determination of golden marble waste composites. Full article
(This article belongs to the Special Issue Adsorption Performance of Hybrid Materials and Composites)
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