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Functional Porous Materials – Relationship between Structure and Properties
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Functional Porous Materials – Relationship between Structure and Properties

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Physical Chemistry and Chemical Physics".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 6779

Special Issue Editors

Dr. József Kalmár

E-Mail Website
Guest Editor
Department of Inorganic and Analytical Chemistry, University of Debrecen, 1. Egyetem tér, H-4032 Debrecen, Hungary
Interests: physical chemistry; materials science; surface science; porous materials; chemical reaction mechanisms; chemical kinetics; coordination chemistry
Dr. Petra Herman

E-Mail Website
Guest Editor
ELKH-DE Mechanisms of Complex Homogeneous and Heterogeneous Chemical Reactions Research Group, University of Debrecen, 4032 Debrecen, Hungary
Interests: physical chemistry; environmental science; porous materials; analytical chemistry; ecotoxicology

Special Issue Information

Dear Colleagues,

The main objective of this special issue of IJMS is to disseminate the results on the rational design, preparation, in-depth structural characterization and application based benchmarking of new functional aerogels, xerogels and other nanostructured porous materials. Studies on applied materials for biomedicine, (including drug delivery, regenerative medicine, imaging and therapeutics), catalysis, environmental remediation, energy (including generation, storage and conservation) and sustainability are welcome, where the structural characteristics of the materials are systematically contrasted to their application related performance. Hybrid functional materials and biopolymers are especially interesting from this aspect.

Studies are especially welcome, where a strong emphasis is placed on the understanding of the relationships among the chemical structure, morphology and physico-chemical properties. Reporting the in-depth characterization of new porous functional materials using a wide range of complimentary experimental techniques (e.g. LV-SEM, HR-TEM, NMR, ssNMR, SANS, SAXS, etc.), and the development of new testing and benchmarking protocols focusing on specialty applications are also welcome. The development of new physico-chemical characterization methods aiming to understand the relationships among materials structural characteristics and application related performance are well within the scope of this special issue.

Our cordial opinion is that this special issue in IJMS provides a professional open-access forum for the dissemination of scientifically well-founded and high quality original results in a leading journal of materials science and physical chemistry.

Dr. József Kalmár
Dr. Petra Herman
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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • porous materials
  • nanostructured materials
  • xerogel
  • aerogel
  • structure
  • property
  • function
  • characterization
  • biomedicine
  • catalysis
  • environmental remediation
  • energy
  • sustainability

Published Papers (4 papers)

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Research

16 pages, 9416 KiB  
Article
Structural Characterization of Several Cement-Based Materials Containing Chemical Additives with Potential Application in Additive Manufacturing
by Alexandru Florin Simedru, Anca Becze, Oana Cadar, Daniela Alexandra Scurtu, Dorina Simedru and Ioan Ardelean
Int. J. Mol. Sci. 2023, 24(9), 7688; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms24097688 - 22 Apr 2023
Cited by 3 | Viewed by 1152
Abstract
The rapid increase in additive manufacturing applications in all industries has highlighted the lack of innovative technologies and processes in the construction industry. Several European and international policies are in place to guide the development of the technological processes involved in the construction [...] Read more.
The rapid increase in additive manufacturing applications in all industries has highlighted the lack of innovative technologies and processes in the construction industry. Several European and international policies are in place to guide the development of the technological processes involved in the construction industry toward a sustainable future. Considering the global concerns regarding this industry, the purpose of this study was to develop new cement-based materials that are capable of accelerated hydration and early strength development for use in additive manufacturing. Ca(NO3)2·4H2O, Al2(SO4)3·18H2O and Na2S2O3·5H2O were used to obtain the accelerating effect in the hydration of Portland cement. Based on results obtained from X-ray diffraction (XRD), scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDX) techniques, as well as low-field nuclear magnetic resonance relaxometry (LF-NMR) techniques, it was demonstrated that all accelerators used have a quickening effect on cement hydration. The addition of Na2S2O3·5H2O or combined Na2S2O3·5H2O and Ca(NO3)2·4H2O led to obtaining new cement-based materials with early strength development and fast hydration of microorganized internal structures, critical characteristics for 3D printing. Full article
(This article belongs to the Special Issue Functional Porous Materials – Relationship between Structure and Properties)
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22 pages, 10836 KiB  
Article
Diffusion/Reaction Limited Aggregation Approach for Microstructure Evolution and Condensation Kinetics during Synthesis of Silica-Based Alcogels
by Nina Helena Borzęcka, Bartosz Nowak, Rafał Pakuła, Robert Przewodzki and Jakub Maksymilian Gac
Int. J. Mol. Sci. 2023, 24(3), 1999; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms24031999 - 19 Jan 2023
Cited by 2 | Viewed by 1277
Abstract
A base-catalysed methyltrimethoxysilane (MTMS) colloidal gel formation was implemented as a cellular automaton (CA) system, specifically diffusion and/or reaction-limited aggregation. The initial characteristic model parameters were determined based on experimental synthesis of MTMS-based, ambient-pressure-dried aerogels. The applicability of the numerical approach to the [...] Read more.
A base-catalysed methyltrimethoxysilane (MTMS) colloidal gel formation was implemented as a cellular automaton (CA) system, specifically diffusion and/or reaction-limited aggregation. The initial characteristic model parameters were determined based on experimental synthesis of MTMS-based, ambient-pressure-dried aerogels. The applicability of the numerical approach to the prediction of gels’ condensation kinetics and their structure was evaluated. The developed model reflects the kinetics properly within the investigated chemical composition range (in strongly reaction-limited aggregation conditions) and, to a slightly lesser extent, the structural properties of aggregates. Ultimately, a relatively simple numerical model reflecting silica-based gel formation was obtained and verified experimentally. The CA simulations have proved valid for understanding the relation between the initial chemical composition and kinetics constants of MTMS-based synthesis and their impact on secondary particle aggregation process kinetics. Full article
(This article belongs to the Special Issue Functional Porous Materials – Relationship between Structure and Properties)
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22 pages, 8389 KiB  
Article
Monodisperse Porous Silica/Polymer Nanocomposite Microspheres with Tunable Silica Loading, Morphology and Porosity
by Julia C. Steinbach, Fabio Fait, Hermann A. Mayer and Andreas Kandelbauer
Int. J. Mol. Sci. 2022, 23(23), 14977; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms232314977 - 29 Nov 2022
Cited by 6 | Viewed by 1601
Abstract
Hybrid organic/inorganic nanocomposites combine the distinct properties of the organic polymer and the inorganic filler, resulting in overall improved system properties. Monodisperse porous hybrid beads consisting of tetraethylene pentamine functionalized poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) particles and silica nanoparticles (SNPs) were [...] Read more.
Hybrid organic/inorganic nanocomposites combine the distinct properties of the organic polymer and the inorganic filler, resulting in overall improved system properties. Monodisperse porous hybrid beads consisting of tetraethylene pentamine functionalized poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) particles and silica nanoparticles (SNPs) were synthesized under Stoeber sol-gel process conditions. A wide range of hybrid organic/silica nanocomposite materials with different material properties was generated. The effects of n(H2O)/n(TEOS) and c(NH3) on the hybrid bead properties particle size, SiO2 content, median pore size, specific surface area, pore volume and size of the SNPs were studied. Quantitative models with a high robustness and predictive power were established using a statistical and systematic approach based on response surface methodology. It was shown that the material properties depend in a complex way on the process factor settings and exhibit non-linear behaviors as well as partly synergistic interactions between the process factors. Thus, the silica content, median pore size, specific surface area, pore volume and size of the SNPs are non-linearly dependent on the water-to-precursor ratio. This is attributed to the effect of the water-to-precursor ratio on the hydrolysis and condensation rates of TEOS. A possible mechanism of SNP incorporation into the porous polymer network is discussed. Full article
(This article belongs to the Special Issue Functional Porous Materials – Relationship between Structure and Properties)
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21 pages, 9793 KiB  
Article
Osteoclast-Driven Osteogenesis, Bone Remodeling and Biomaterial Resorption: A New Profile of BMP2-CPC-Induced Alveolar Bone Regeneration
by Hongzhou Shen, Yu Zhuang, Chenglong Zhang, Changru Zhang, Yuan Yuan, Hongbo Yu, Jiawen Si and Guofang Shen
Int. J. Mol. Sci. 2022, 23(20), 12204; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms232012204 - 13 Oct 2022
Cited by 6 | Viewed by 1876
Abstract
This bedside-to-bench study aimed to systematically investigate the value of applying BMP2-loaded calcium phosphate cement (BMP2-CPC) in the restoration of large-scale alveolar bone defects. Compared to deproteinized bovine bone (DBB), BMP2-CPC was shown to be capable of inducing a favorable pattern of bone [...] Read more.
This bedside-to-bench study aimed to systematically investigate the value of applying BMP2-loaded calcium phosphate cement (BMP2-CPC) in the restoration of large-scale alveolar bone defects. Compared to deproteinized bovine bone (DBB), BMP2-CPC was shown to be capable of inducing a favorable pattern of bone regeneration and bone remodeling accompanied by active osteoclastogenesis and optimized biomaterial resorption when applied in reconstructive periodontally accelerated osteogenic orthodontics (PAOO) surgery. To verify the regulatory role of osteoclasts in the BMP2-CPC-induced pattern of bone regeneration, in vitro and in vivo studies were designed to elucidate the underlying mechanism. Our results revealed that osteoclasts played a multifaceted role (facilitating osteogenesis, bone remodeling and biomaterial resorption) in the BMP2-CPC-induced bone regeneration. Osteoclasts contributed to the osteogenic differentiation of mesenchymal stem cells (MSCs) by secreting calcium ions, CTHRC1 and PDGF-B. Moreover, the increased osteoclasts promoted the remodeling of new bone and BMP2-CPC resorption, leading to a harmonized replacement of biomaterials with mature bone. In conclusion, the in vitro and in vivo experimental results corresponded with the clinical results and showed the optimized properties of BMP2-CPC in activating osteoclast-driven bone regeneration and remodeling, thus indicating the highly promising prospects of BMP2-CPC as an ideal therapeutic for alveolar bone defects. Full article
(This article belongs to the Special Issue Functional Porous Materials – Relationship between Structure and Properties)
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