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Nanostructured Materials: From Surface to Porous Solid
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Nanostructured Materials: From Surface to Porous Solid

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (10 April 2024) | Viewed by 7008

Special Issue Editor

Dr. Alfonso Policicchio

E-Mail Website
Guest Editor
Department of Physic, Universit della Calabria, Via Pietro Bucci, 87036 Arcavacata di Rende, Italy
Interests: hydrogen; methane; CCS; porous materials; nanostructure; energy conversion and storage; 2D materials; self-assembled monolayer
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Porous materials, i.e., solids with pore sizes ranging from below 1 nm up to more than 50 nm, have been under study for several years because of their size-related properties and their versatility in many fields of science and technology. For this reason, these kinds of structures have attracted a lot of interest from both academic and industry research. They include carbon-based structures (e.g. activated carbon, carbon nanotubes, fullerene), zeolites, pillared materials, organosilicates and so on. Novel synthesis methods are constantly being developed, mainly to customize materials and to enhance their performance and, as a second step, to make their synthesis both industrially and environmentally friendly.

On the other hand, in the past few years, two-dimensional materials with abundant in-plane pores (porous 2D materials), such as graphene, boron nitride and transition metal chalcogenides, have attracted extensive attention due to their unique structure and properties, as well as promising applications. Due to their distinct microstructural advantages, stemming from both porous and 2D materials, these materials have shown high performances as catalyst, particularly for photocatalysis and electrocatalysis, and can potentially be used in high-performance electrochemical energy storage and conversion devices, such as lithium-ion batteries, sodium-ion batteries, supercapacitors and fuel cells.

In this Special Issue, contributions in the form of research papers, communications and reviews are welcome, from all areas of porous solid and porous 2D materials. Topics include, but are not limited to, recent research and new trends in the synthesis of porous structures, development of advanced multifunctional materials and in their use for energy and environmental applications, such as conversion of gaseous organic pollutants, carbon capture, applications as super capacitors and with particular attention to gas sequestration and storage, as well as photocatalytic and electrocatalytic applications and energy storage and conversion devices.

Dr. Alfonso Policicchio
Guest Editor

Manuscript Submission Information

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Keywords

  • synthesis of porous materials
  • porous 2D materials
  • fabrication technologies
  • energy storage applications
  • gas purification and storage
  • advanced characterization
  • environmentally friendly
  • self-assembled monolayer

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Related Special Issue

Published Papers (4 papers)

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Research

16 pages, 10877 KiB  
Article
Angle-Resolved Fluorescence of a Dye Coupled to a Plasmonic Nanohole Array
by Francesco Floris, Margherita Angelini, Eliana Manobianco, Paola Pellacani, Valentina Tolardo and Franco Marabelli
Appl. Sci. 2024, 14(9), 3574; https://doi.org/10.3390/app14093574 - 24 Apr 2024
Viewed by 977
Abstract
Gold nanohole arrays are periodic metasurfaces that are gathering huge interest in biosensing applications. The bi-dimensional grating-like structure defines their plasmonic response, together with the corresponding mode of angular dispersion. These properties can be used to investigate the interaction processes with the fluorescence [...] Read more.
Gold nanohole arrays are periodic metasurfaces that are gathering huge interest in biosensing applications. The bi-dimensional grating-like structure defines their plasmonic response, together with the corresponding mode of angular dispersion. These properties can be used to investigate the interaction processes with the fluorescence features of a properly chosen emitting molecule. By employing a custom gold nanohole array alongside a commercial organic dye, we conducted an accurate angle-resolved optical characterization resorting to fluorescence, reflectance, and transmittance spectra. The coupling between the plasmonic modes and the fluorescence features was then identified as a modification of the dye fluorescence signal in terms of both spectral redistribution and enhancement. By carefully analyzing the results, different measurement efficiencies can be identified, depending on the set-up configuration, to be properly engineered for sensitivity maximization in plasmon-enhanced fluorescence-based applications. Full article
(This article belongs to the Special Issue Nanostructured Materials: From Surface to Porous Solid)
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12 pages, 4963 KiB  
Article
Experimental Evaluation of ND: YAG Laser Parameters and Sample Preparation Methods for Texturing Thin AISI 316L Steel Samples
by Ewa Kozłowska and Sylwia Grabska-Zielińska
Appl. Sci. 2023, 13(22), 12352; https://doi.org/10.3390/app132212352 - 15 Nov 2023
Cited by 2 | Viewed by 1617
Abstract
In mechanical and material engineering, the effect of laser texturing depends on many factors besides device specification, primarily the properties of the materials being processed, and, secondly, the preparation of the sample. Laser texturing of thin (<5 mm) samples is mostly performed utilizing [...] Read more.
In mechanical and material engineering, the effect of laser texturing depends on many factors besides device specification, primarily the properties of the materials being processed, and, secondly, the preparation of the sample. Laser texturing of thin (<5 mm) samples is mostly performed utilizing short-pulse lasers, but depending on the power of the laser beam, the process can also be performed by using continuous operation lasers. When using a laser beam to modify the surface layer, special attention should be paid to the surface preparation process. Engraving a shiny metal surface can lead to laser beam dispersion and energy loss. Some materials require special preparation and surface darkening in order to be effectively engraved. In the case of engraving, maximizing the efficiency and repeatability of the process is the key to obtaining the desired properties. The aim of the conducted study was to establish satisfying parameters and a sample preparation method for texturing thin AISI 316L samples. Appropriately selected laser parameters added to proper sample preparation. The sanding, etching, and darkening of the surface layer improved the quality of the weld and eliminated problems such as deformation and spark formation that often occur with raw samples during the texturing process. Full article
(This article belongs to the Special Issue Nanostructured Materials: From Surface to Porous Solid)
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10 pages, 335 KiB  
Article
Magnetic Properties of Gd-Doped Fe3O4 Nanoparticles
by Iliana Apostolova, Angel Apostolov and Julia Wesselinowa
Appl. Sci. 2023, 13(11), 6411; https://doi.org/10.3390/app13116411 - 24 May 2023
Cited by 3 | Viewed by 1828
Abstract
The magnetic properties of pure and rare earth ion-doped Fe3O4 nanoparticles are investigated using a microscopic model and the Green’s function theory. The magnetization Ms and Curie temperature TC are calculated depending on size, temperature and Gd doping [...] Read more.
The magnetic properties of pure and rare earth ion-doped Fe3O4 nanoparticles are investigated using a microscopic model and the Green’s function theory. The magnetization Ms and Curie temperature TC are calculated depending on size, temperature and Gd doping concentration. Ms and TC decrease with decreasing nanoparticle size and with increasing the doping concentration. The band gap energy increases with decreasing size and Gd dopants. The obtained results are in good agreement with the experimental data. Full article
(This article belongs to the Special Issue Nanostructured Materials: From Surface to Porous Solid)
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21 pages, 3417 KiB  
Article
Nitrogenous Bases in Relation to the Colloidal Silver Phase: Adsorption Kinetic, and Morphology Investigation
by Malgorzata Zienkiewicz-Strzalka and Magdalena Blachnio
Appl. Sci. 2023, 13(6), 3696; https://doi.org/10.3390/app13063696 - 14 Mar 2023
Cited by 6 | Viewed by 1792
Abstract
The interaction between inorganic nanoparticles and biological molecules is of great importance in the field of biosystems and nanomaterials. Here, we report the adsorption process of a heterocyclic organic compound (nitrogenous base) on a microporous carbon (C) in the presence of a colloidal [...] Read more.
The interaction between inorganic nanoparticles and biological molecules is of great importance in the field of biosystems and nanomaterials. Here, we report the adsorption process of a heterocyclic organic compound (nitrogenous base) on a microporous carbon (C) in the presence of a colloidal silver solution (AgNP solution) as an accompanying substance. Analysis of the potential colloid–biomolecule interaction as well as the subsequent phenomenon of changes in the morphology of the colloidal system in the presence of selected nucleotides was investigated. Adenosine nitrogenous base (Anb) was selected as a model molecule of the building block of DNA and RNA. The adsorption process of nucleotides from one- and two-component systems was monitored by cyclic UV-VIS measurements for obtaining time-dependent profiles and estimating the kinetic characteristics of uptake. We demonstrate the temperature-dependent course of the adsorption process with visible nucleotide-AgNP morphology determinants. The experimental adsorption kinetics were analyzed using selected theoretical models (intraparticle diffusion model, multiexponential equation, and many others). On the other hand, obtained Anb/C and Anb/AgNP/C composites were characterized by various techniques suitable for material surface and morphology characterization: high-resolution transmission electron microscopy (HR-TEM and TEM/EDX), N2 physisorption measurements, and thermal analysis (thermogravimetric analysis (TGA)/differential scanning calorimetry (DSC) experiments). Full article
(This article belongs to the Special Issue Nanostructured Materials: From Surface to Porous Solid)
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