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Advanced Nanomaterials for Electrochemical Energy and Environmental Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: closed (20 February 2026) | Viewed by 733

Special Issue Editors


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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

E-Mail Website
Guest Editor
Department of General Chemistry, Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, Bucharest, Romania
Interests: nanomaterials synthesis and characterization; electrochemistry; ICP-MS; corrosion; biomaterials; carbon nanostructures; hybrid materials for biomedical applications; drug release; surface coatings
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of General Chemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
Interests: chemical engineering; physical chemistry; electrochemistry and corrosion; materials and nanoscience
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue, entitled "Advanced Nanomaterials for Electrochemical Energy and Environmental Applications", focuses on the innovation and application of state-of-the-art nanomaterials aimed at tackling critical global issues in clean energy and environmental sustainability. As the need for better energy systems and water cleaning methods grows, electrochemically active nanomaterials have become crucial for new technologies. This issue seeks to compile original research and review articles that investigate the synthesis, characterisation, and efficacy of nanostructured materials—including metal oxides, carbon-based materials, quantum dots, and hybrid composites—for applications such as fuel cells, batteries, supercapacitors, electrochemical pollutant degradation, and sensing technologies. The focus is on comprehending the relationships among structure, properties, and performance, as well as charge transfer mechanisms and the influence of surface/interface engineering, doping, and defect modulation on enhancing electrochemical behaviour. Both experimental and theoretical investigations are encouraged, particularly those that suggest scalable, cost-effective, and eco-friendly methodologies. This Special Issue aims to stimulate innovation at the convergence of materials science, electrochemistry, and environmental engineering through interdisciplinary dialogue, thereby advancing sustainable solutions for energy and environmental issues.

Dr. Mihaela Vasilica Mindroiu
Dr. Mariana Prodana
Prof. Dr. Daniela Mioara Ionita
Guest Editors

Manuscript Submission Information

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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

  • nanomaterials
  • electrochemistry
  • photo-electrocatalysts
  • environmental sustainability
  • water pollution
  • quantum dots
  • biomaterials
  • hydrogen evolution reaction
  • smart buildings

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Published Papers (1 paper)

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Research

20 pages, 5021 KB  
Article
Bio-Inspired Reduced TiO2 Nanotube Photocatalyst Modified with Polydopamine and Silk Fibroin Quantum Dots for Enhanced UV and Visible-Light Photocatalysis
by Cristina Dumitriu, Simona Popescu, Roberta Miftode, Angela Gabriela Păun, Andreea Mădălina Pandele, Andrei Kuncser and Mihaela Mîndroiu
Materials 2026, 19(2), 358; https://doi.org/10.3390/ma19020358 - 16 Jan 2026
Viewed by 497
Abstract
Y-branched TiO2 nanotubes (NTs) were produced by anodizing titanium plates derived from aerospace production leftovers and subsequently engineered to develop an enhanced TiO2-based photocatalytic system. The NTs were electrochemically reduced to obtain reduced TiO2 nanotubes (rTN) with a narrowed [...] Read more.
Y-branched TiO2 nanotubes (NTs) were produced by anodizing titanium plates derived from aerospace production leftovers and subsequently engineered to develop an enhanced TiO2-based photocatalytic system. The NTs were electrochemically reduced to obtain reduced TiO2 nanotubes (rTN) with a narrowed bandgap, followed by surface modification with polydopamine (PD) and silk fibroin-derived quantum dots (QDs) to promote enhanced UV and visible-light photocatalysis for wastewater treatment. The QDs were hydrothermally synthesized from Bombyx mori silk fibroin. Scanning Electron Microscopy (SEM) revealed spherical QD agglomerates encapsulated within the PD layer, while Energy Dispersive X-ray Spectroscopy (EDX) confirmed the presence of carbon and nitrogen originating from both PD and QD. The resulting rNT/PD/QD photocatalyst exhibited a significantly reduced bandgap (1.03 eV), increased Urbach energy (1.35 eV), and moderate hydrophilicity. A high double-layer capacitance (Cdl) indicated an enlarged electrochemically active surface due to the combination of treatments. Electrochemical characterization demonstrated reduced electrical resistance, higher charge density, and lower electron–hole recombination, leading to improved interfacial charge transfer efficiency and electrochemical stability during multi-cycle cyclic voltammetry measurements. Preliminary photocatalytic tests show that the rNT/PD/QD photocatalyst achieved a degradation efficiency of 79.26% for methyl orange (MO) and 35% for tetracycline (TC). Full article
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