High-Surface Area Advanced Materials and Their Applications

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Applications".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3287

Special Issue Editors


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Guest Editor

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Guest Editor
Functional Nanosystems, Italian Institute of Technology, Genoa, Italy
Interests: nanomaterials; light–matter interaction; nanoscale functionality

Special Issue Information

Dear Colleagues,

High-surface area materials have crucial significance in all processes that rely on interface phenomena, as the yield and intensification of these processes directly depend on the extent of surface available for interaction and/or reaction. These may include adsorption, separation/barrier, catalysis, or storage/release processes, both in solid-liquid and solid-gas systems, and they play a key role in several sectors of technological development such as energy, electronics, sensors, environment, health, and manufacturing industries.

An increase in surface area can be achieved either by reducing the size of particles or by creating extensive porosity in bulk materials. Nanotechnology represents a huge step forward in both of these methods. Nanomaterials, in the form of nanoparticles, nanofibers, 2D nanostructures, or 3D porous nanostructures, present an increased surface-to-volume ratio. Examples of these nanomaterials include quantum dots, graphene, carbon nanotubes, mesoporous silicas, and bioactive glasses, zeolites, metal-organic frameworks (MOFs), and aerogels, among others.

The unique properties of these materials are well recognized, but their wide use in scaled-up applications is still very limited in some cases. Thus, this is a topic worthy of development. To this end, this Special Issue aims to gather cutting-edge works related to the synthesis, development, and testing of high-surface-area advanced materials, which can inspire researchers in industry and academia to contribute toward the design of novel materials or improved materials for diverse applications.

This Special Issue is an initiative of the Junior Euromat 2022 (https://junioreuromat.org/), an event that will contribute to the formation and the development of the skills of young materials scientists and engineers in Europe and will promote close contact between science and industry.

Dr. Luísa Durães
Prof. Dr. Aldo R. R. Boccaccini
Dr. Ilka Kriegel
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. Gels 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 area
  • nanomaterials
  • nanostructured materials
  • porous materials
  • surface-dependent applications

Published Papers (1 paper)

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Research

19 pages, 6743 KiB  
Article
Influence of Copper-Strontium Co-Doping on Bioactivity, Cytotoxicity and Antibacterial Activity of Mesoporous Bioactive Glass
by Akrity Anand, Susanta Sengupta, Hana Kaňková, Anna Švančárková, Ana M. Beltrán, Dušan Galusek, Aldo R. Boccaccini and Dagmar Galusková
Gels 2022, 8(11), 743; https://doi.org/10.3390/gels8110743 - 16 Nov 2022
Cited by 13 | Viewed by 2066
Abstract
Mesoporous bioactive glass (MBG) is an extensively studied biomaterial used for the healing of bone defects. Its biological applications can be tailored by introducing metallic ions, such as strontium (Sr) and copper (Cu), which can enhance its functionalities, including osteogenetic, angiogenetic and antibacterial [...] Read more.
Mesoporous bioactive glass (MBG) is an extensively studied biomaterial used for the healing of bone defects. Its biological applications can be tailored by introducing metallic ions, such as strontium (Sr) and copper (Cu), which can enhance its functionalities, including osteogenetic, angiogenetic and antibacterial functionalities. In this study, Cu and Sr ions were co-doped (ratio 1:1) with x = 0.5, 1 and 2 mol% each in glass with an intended nominal composition of 80SiO2-(15-2x)CaO-5P2O5-xCuO-xSrO and synthesized with an evaporation-induced self-assembly (EISA)-based sol-gel technique. XRD confirmed the amorphous nature of the glass, while compositional analysis using ICP-OES confirmed the presence of dopant ions with the required amounts. A TEM study of the MBG powders showed fringes that corresponded to the formation of a highly ordered mesoporous structure. The Cu-Sr-doped MBG showed a positive effect on apatite formation when immersed in SBF, although the release of Cu and Sr ions was relatively slow for 1 mol% of each co-dopant, which signified a stable network structure in the glass. The impact of the Cu and Sr ions on the osteoblast-like cell line MG-63 was assessed. At the particle concentrations of 1 wt./vol.% or lower, the cell viability was above 50%. An antibacterial test was conducted against Gram-negative E. coli and Gram-positive S. aureus bacteria. With a sequential increase in the co-doped ion content in the glass, the zone of inhibition for bacteria increased. The results suggest that the doping of MBG with Cu and Sr ions at up to 2 mol% can result in tailored sustained release of ions to enhance the applicability of the studied glass as a functional biomaterial for bone regeneration applications. Full article
(This article belongs to the Special Issue High-Surface Area Advanced Materials and Their Applications)
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