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Materials
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Electrochemical Synthesis and Characterization of Nanostructures, Alloys and Conductive Polymers
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Electrochemical Synthesis and Characterization of Nanostructures, Alloys and Conductive Polymers

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (10 October 2023) | Viewed by 5649

Special Issue Editor

Dr. Mihaela Mindroiu Vasilica

E-Mail Website
Guest Editor
Department of General Chemistry, University Politehnica of Bucharest, Bucuresti, Romania
Interests: electrochemical synthesis and characterization of nanostructured materials; electrodeposition of conductive polymers; semiconductors; supercapacitors, electrocatalysts; energy conversion; electrochromic energy storage devices; smart windows; photoelectrocatalysis; hydrogen evolution reaction; bio-nanomaterials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Given current global issues such as climate change, global warming, the energy crisis, the need for bio-nanomaterials and environmental concerns, academic and industrial researchers around the world are focusing their efforts on designing and developing new nanomaterials, alloys and conductive polymers. Biomaterials, electrocatalysts, semiconductors, supercapacitors, energy conversion into solar cells, electrochromic devices and energy storage/release are just a few applications that can benefit from the multifunctional capabilities of these versatile materials.

Many synthetic approaches to the manufacture of nanostructures, alloys and conductive polymers are currently available, but among them, electrochemical methods (e.g., simple electrochemical oxidation (anodizing) of metals or electropolymerization) are particularly attractive due to their simplicity, cost-effectiveness and versatility.

Therefore, in this Special Issue of Materials, both regular research papers and reviews on all aspects of the electrochemical synthesis and characterization of nanostructures, alloys, thin films and conductive polymers with a wide range of applicability are expected.

This Special Issue welcomes, but is not limited to, manuscripts on the following topics:

  • Nanoelectrochemistry;
  • Electrochemical processing of nanomaterials, thin films and conductive polymers;
  • Electrochemical characterization of nanostructures, alloys and conductive polymers;
  • Corrosion and corrosion protection;
  • Intrinsically conducting polymers;
  • Electrochemical synthesis and surface film formation;
  • Deposition of alloys;
  • Oxides and semiconductors;
  • Photoelectrochemistry of semiconductors;
  • Applications of nanostructures, alloys and conductive polymers in various fields, including photoelectrochemistry; electrocatalysts; energy conversion; electrochromic energy storage devices; bio-nanomaterials; semiconductors; photovoltaics; water purification; electrochemical sensors and monitoring techniques, and others.

Dr. Mihaela Vasilica
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. Materials is an international peer-reviewed open access semimonthly 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

  • nanoelectrochemistry
  • conductive polymers
  • anodization
  • thin films
  • corrosion protection
  • photoelectrocatalysts
  • semiconductors
  • electrochromic energy storage devices
  • bio-nanomaterials
  • electrochemical sensors

Published Papers (2 papers)

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Research

18 pages, 4319 KiB  
Article
Titanium Dioxide Thin Films Produced on FTO Substrate Using the Sol–Gel Process: The Effect of the Dispersant on Optical, Surface and Electrochemical Features
by Vasilica Mihaela Mîndroiu, Andrei Bogdan Stoian, Roberta Irodia, Roxana Trușcă and Eugeniu Vasile
Materials 2023, 16(8), 3147; https://doi.org/10.3390/ma16083147 - 16 Apr 2023
Cited by 6 | Viewed by 3198
Abstract
In this study, TiO2 thin films formed by dip-coating on an FTO substrate were obtained and characterized using surface, optical and electrochemical techniques. The impact of the dispersant (polyethylene glycol-PEG) on the surface (morphology, wettability, surface energy), optical (band gap and Urbach [...] Read more.
In this study, TiO2 thin films formed by dip-coating on an FTO substrate were obtained and characterized using surface, optical and electrochemical techniques. The impact of the dispersant (polyethylene glycol-PEG) on the surface (morphology, wettability, surface energy), optical (band gap and Urbach energy) and electrochemical (charge-transfer resistance, flat band potential) properties were investigated. When PEG was added to the sol–gel solution, the optical gap energy of the resultant films was reduced from 3.25 to 3.12 eV, and the Urbach energy increased from 646 to 709 meV. The dispersant addition in the sol–gel process influences surface features, as evidenced by lower contact-angle values and higher surface energy achieved for a compact film with a homogenous nanoparticle structure and larger crystallinity size. Electrochemical measurements (cycle voltammetry, electrochemical impedance spectroscopy and the Mott–Schottky technique) revealed improved catalytic properties of the TiO2 film, due to a higher insertion/extraction rate of protons into the TiO2 nanostructure, as well as a decrease in charge-transfer resistance from 418 k to 23.4 k and a decrease in flat band potential from 0.055 eV to −0.019 eV. The obtained TiO2 films are a promising alternative for technological applications, due to their advantageous surface, optical and electrochemical features. Full article
(This article belongs to the Special Issue Electrochemical Synthesis and Characterization of Nanostructures, Alloys and Conductive Polymers)
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19 pages, 3753 KiB  
Article
Magnesium Ortho-Vanadate/Magnesium Oxide/Graphene Oxide Embedded through Cellulose Acetate-Based Films for Wound Healing Applications
by Fatemah A. Taher, Mohamed Gouda, Mai M. Khalaf, Saad Shaaban, Alnoor Y. A. Al Bosager, Dania A. A. Algafly, Metwally K. Mahfouz, Manal F. Abou Taleb and Hany M. Abd El-Lateef
Materials 2023, 16(8), 3009; https://doi.org/10.3390/ma16083009 - 11 Apr 2023
Cited by 2 | Viewed by 2010
Abstract
A multifunctional nano-films of cellulose acetate (CA)/magnesium ortho-vanadate (MOV)/magnesium oxide/graphene oxide wound coverage was fabricated. Through fabrication, different weights of the previously mentioned ingredients were selected to receive a certain morphological appearance. The composition was confirmed by XRD, FTIR, and EDX techniques. SEM [...] Read more.
A multifunctional nano-films of cellulose acetate (CA)/magnesium ortho-vanadate (MOV)/magnesium oxide/graphene oxide wound coverage was fabricated. Through fabrication, different weights of the previously mentioned ingredients were selected to receive a certain morphological appearance. The composition was confirmed by XRD, FTIR, and EDX techniques. SEM micrograph of Mg3(VO4)2/MgO/GO@CA film depicted that there was a porous surface with flattened rounded MgO grains with an average size of 0.31 µm was observed. Regarding wettability, the binary composition of Mg3(VO4)2@CA occupied the lowest contact angle of 30.15 ± 0.8o, while pure CA represents the highest one at 47.35 ± 0.4°. The cell viability % amongst the usage of 4.9 µg/mL of Mg3(VO4)2/MgO/GO@CA is 95.77 ± 3.2%, while 2.4 µg/mL showed 101.54 ± 2.9%. The higher concentration of 5000 µg/mL exhibited a viability of 19.23%. According to optical results, the refractive index jumped from 1.73 for CA to 1.81 for Mg3(VO4)2/MgO/GO@CA film. The thermogravimetric analysis showed three main stages of degradation. The initial temperature started from room temperature to 289 °C with a weight loss of 13%. On the other hand, the second stage started from the final temperature of the first stage and end at 375 °C with a weight loss of 52%. Finally, the last stage was from 375 to 472 °C with 19% weight loss. The obtained results, such as high hydrophilic behavior, high cell viability, surface roughness, and porosity due to the addition of nanoparticles to the CA membrane, all played a significant role in enhancing the biocompatibility and biological activity of the CA membrane. The enhancements in the CA membrane suggest that it can be utilized in drug delivery and wound healing applications. Full article
(This article belongs to the Special Issue Electrochemical Synthesis and Characterization of Nanostructures, Alloys and Conductive Polymers)
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