Surface Engineering of Nanomaterials for Catalysis and Environmental Applications

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Engineering for Energy Harvesting, Conversion, and Storage".

Deadline for manuscript submissions: 10 June 2024 | Viewed by 3510

Special Issue Editors


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Guest Editor
Department of Chemistry, University Chouaib Doukkal, El Jadida 299-24000, Morocco
Interests: surface nanoengineering; reactive surfaces and mechanism; organometallics and catalysis; computational chemistry; green chemistry
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Guest Editor
Laboratoire de Chimie Analytique et Moléculaire, département de chimie, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad, Safi 4162, Morocco
Interests: electrochemistry; organic chemistry; theoretical chemistry; dft calculations; chemical reactivity

Special Issue Information

Dear Colleagues,

Technologies whose operations are enabled by nanomaterials-enabled technologies have been seamlessly integrated into various applications, including in the chemical industry, solar hydrogen, batteries, sensors, consumer electronics, and thermoelectric devices. The novel generations of engineered nanostructures, also known as designed and functionalized nanomaterials, has opened up new possibilities in relevant applications such as biomedical approaches. New materials with intriguing physical and chemical properties provide opportunities to address these challenges. Understanding the physicochemical, structural, microstructural, surface, and interface properties of nanomaterials is vital for achieving the required efficiency, cycle life, and sustainability in various technological applications.

The present Special Issue intends to publish original research and review articles on the state-of-the-art of design and synthesis of new nano- and micro-structured materials for energy, catalysis, and environmental applications. Submissions of articles which combine experimental and theoretical approaches are particularly encouraged. Purely computational studies providing new methodologies to be used in synergy with experimental techniques and in improving the current mechanistic understanding of nanomaterials application in energy, catalysis, and environment will be also considered.

Dr. Lahoucine Bahsis
Prof. Dr. Hafid Anane
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

  • surface nanoengineering
  • reactive surfaces and mechanism
  • multifunctional materials
  • colloidal stabilization in complex media
  • computational chemistry

Published Papers (3 papers)

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Research

14 pages, 12430 KiB  
Article
Influence of Substrate Preparation on the Catalytic Activity of Conical Ni Catalysts
by Katarzyna Skibińska, Safya Elsharkawy, Anna Kula, Dawid Kutyła and Piotr Żabiński
Coatings 2023, 13(12), 2067; https://doi.org/10.3390/coatings13122067 - 11 Dec 2023
Cited by 1 | Viewed by 1309
Abstract
The production of hydrogen using electrolysis contributes to the development of more important renewable energy sources. Nowadays, the synthesis of alloys, which can be successfully applied as catalysts instead of precious metals, is carefully investigated. One-step electrodeposition is a surface engineering method that [...] Read more.
The production of hydrogen using electrolysis contributes to the development of more important renewable energy sources. Nowadays, the synthesis of alloys, which can be successfully applied as catalysts instead of precious metals, is carefully investigated. One-step electrodeposition is a surface engineering method that allows for the control of the morphology of the deposit by changing deposition parameters. It is a simple and low-cost process based on electrochemical synthesis from electrolytes, usually non-toxic crystal modifiers. In this work, a conical Ni structure on Cu foil was produced using this technique. The effect of the copper substrate on the morphology of the developed nanocones was analyzed using a Scanning Electron Microscope (SEM). Then, the catalytic performance of the synthesized coatings was carefully analyzed based on the results of a linear sweep voltammetry experiment and the measurements of their wettability and electrochemical active surface area. The proposed method of Cu treatment, including polishing with sandpapers, influenced the growth of cones and, consequently, increased the catalytic activity and active surface area of the Ni coatings in comparison to the bulk Ni sample. Full article
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22 pages, 6161 KiB  
Article
Tailored Nanoscale Architectures for White Light Photoelectrochemistry: Zinc Oxide Nanorod-Based Copper Oxide Heterostructures
by Yu-Chih Fu, Yu-Che Chen, Chieh-Ming Wu and Vincent K. S. Hsiao
Coatings 2023, 13(12), 2051; https://doi.org/10.3390/coatings13122051 - 6 Dec 2023
Cited by 1 | Viewed by 888
Abstract
This study investigates the morphological evolution, optical properties, and photoelectrochemical (PEC) performance of copper-oxide-coated ZnO nanorods under different annealing conditions. Distinct effects of annealing temperature and atmosphere on Cu2O and CuO growth on ZnO nanorods were observed. SEM images revealed the [...] Read more.
This study investigates the morphological evolution, optical properties, and photoelectrochemical (PEC) performance of copper-oxide-coated ZnO nanorods under different annealing conditions. Distinct effects of annealing temperature and atmosphere on Cu2O and CuO growth on ZnO nanorods were observed. SEM images revealed the transformation of Cu2O from silk-like to mushroom-like structures, while CuO formed interconnecting nanomaterials. XRD and XPS analyses showed peak shifts and binding energy changes, highlighting structural and electronic modifications induced by annealing. Moreover, PEC measurements demonstrated the superior photoresponse of CuO-coated ZnO nanorods, especially under negative bias, attributed to favorable band structure, charge carrier separation, and annealing stability compared to Cu2O-coated ones. A noteworthy discovery is that ZnO nanorods coated with CuO nanostructures, prepared under air conditions at 400 °C annealing temperature, exhibit exceptional photocurrents. Applying a 0.4 V voltage increases the photocurrent by approximately 10 mA/cm2. The findings provide valuable insights into tailoring metal oxide semiconductor nanostructures for potential applications in diverse areas, including photoelectrochemistry. This study offers practical guidance on modulating nanostructure growth through annealing to enhance performance. The results hold significance for PEC water splitting and have far-reaching impacts on photocatalysis, environmental remediation, and solar cells. Full article
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14 pages, 4562 KiB  
Article
In Situ Decorated Palladium Nanoparticles on Chitosan Beads as a Catalyst for Coupling Reactions
by Khaoula Oudghiri, Lahoucine Bahsis, Said Eddarir, Hafid Anane and Moha Taourirte
Coatings 2023, 13(8), 1367; https://doi.org/10.3390/coatings13081367 - 3 Aug 2023
Viewed by 848
Abstract
A green protocol for the in situ synthesis of Pd nanoparticles on chitosan beads (Pd NPs-CS) is reported without the need to use any toxic reducing agents. The preparation of the Pd nanoparticles catalyst was performed using a simple coordination reaction between the [...] Read more.
A green protocol for the in situ synthesis of Pd nanoparticles on chitosan beads (Pd NPs-CS) is reported without the need to use any toxic reducing agents. The preparation of the Pd nanoparticles catalyst was performed using a simple coordination reaction between the prepared chitosan beads and palladium ions (Pd NPs-CS). The obtained catalyst was characterized by different techniques, including SEM, EDX, DRX, and FTIR analyses. The Pd NPs-CS catalyst was investigated in the Suzuki–Miyaura cross-coupling reaction and Heck reaction under greener conditions, and the results show high catalytic activity and selectivity. The bead form of the Pd NPs-CS catalyst was easily separated from the reaction mixture to obtain the desired products, as confirmed by spectroscopic methods. This sustainable catalyst has the advantages of having sustainable organic reactions such as biopolymer support and recovery without significant loss of catalytic activity or selectivity. Full article
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