Layered Materials and Their Applications

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: 23 October 2025 | Viewed by 163

Special Issue Editors


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Guest Editor
Department of Chemistry and Industrial Chemistry (DCCI), University of Genoa, Via Dodecaneso 31, 16132 Genoa, Italy
Interests: biocidal energetic material

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Guest Editor
Department for the Earth, Environment and Life Sciences (DISTAV), University of Genoa, Corso Europa 26, 16132 Genoa, Italy
Interests: mineralization; soil chemistry; minerals; mining; environmental science; earth sciences; geology; geochemistry; mineral processing; mineral exploration

Special Issue Information

Dear Colleagues,

Layered materials, with their structure consisting of stacked sheets, represent an interesting opportunity for developing new materials with tailored nanodesigns, controlled accessibility to the sites and properties, tunable pore size and volume, and  a high surface area. The use of layered materials, both natural and synthetic (layered perovskite, anionic clays, and layered silicates), have a great variety of applications.

Another type of layered material is the layered double hydroxide (LDH), which has a very different structure than the layered silicates; the typical LDH has a Brucite [naturally occurring Mg(OH)2] structure, in which some aluminum ions substitute for magnesium ions to provide an excess of positive charge on the clay layers which must then be balanced by anions in the gallery space.

These inorganic matrices, historically representing a cornerstone of adsorbing materials, nowadays find application in ever wider fields, due to the simplicity of their synthesis and their ability to plan ad hoc structures for different applications.

We invite investigators to submit papers that discuss the recent developments and results about layered-based materials, with regard to their synthesis, growth mechanism, characterization, and applications. In particular, the submission of any study on the possible applications of layered-based nanomaterials is strongly encouraged.

The potential topics include, but, again, are not limited to, the following:

  • Materials growth and film deposition by any method (co-precipitation, in situ, electrochemical, etc.);
  • Structure and property characterization (XRD, TEM, SEM, dielectric, piezoelectric, electrical conductivity, EIS, ferroelectric, pyroelectric properties, etc.);
  • Inorganic containers and nanocontainers (drug delivery, UV stabilizer, etc.);
  • Anticorrosion coatings;
  • Composite materials and nanomaterials;
  • Biocompatibility;
  • Antibacterial and osteogenic coatings;
  • Advanced electrodes for supercapacitors, water splitting, and so on;
  • Photocatalysis and light-induced CO2 reduction;
  • Oxygen evolution reduction electrocatalysis;
  • Delamination;
  • Wastewater remediation;
  • Dye removal and heavy metal filtration.

Dr. Anna Maria Cardinale
Dr. Cristina Carbone
Guest Editors

Manuscript Submission Information

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Keywords

  • layered materials
  • LDH
  • anionic clays
  • composites
  • structure–properties relationships

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Published Papers (1 paper)

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Research

10 pages, 2649 KiB  
Article
Ammonia Content in Natural Taranakite: An Experimental Study of Thermal Stability
by Michael Casale, Yuri Galliano, Cristina Carbone and Anna Maria Cardinale
Crystals 2025, 15(4), 378; https://doi.org/10.3390/cryst15040378 - 20 Apr 2025
Viewed by 97
Abstract
Taranakite is a mineral consisting of a hydrated layered aluminum phosphate, with the formula K3Al5(PO3OH)6(PO4)2·18H2O; its structure belongs to the R-3C group. If the mineral grows in an environment [...] Read more.
Taranakite is a mineral consisting of a hydrated layered aluminum phosphate, with the formula K3Al5(PO3OH)6(PO4)2·18H2O; its structure belongs to the R-3C group. If the mineral grows in an environment rich in bat and bird guano, the high nitrogen guano content induces the intercalation of NH4+ into the structure, replacing the potassium ion. The thermal decomposition of guano-derived taranakite releases water and ammonia. The aim of this work is to confirm the presence of ammonium in the guano-derived taranakite. Thermogravimetric analysis (TGA) was performed on taranakite collected in Pollera Cave (Liguria), and the gases evolved during its decomposition were analyzed by Fourier-transform infrared (FT-IR) spectroscopy. All the samples were characterized before and after thermal analysis by means of powder X-ray diffractometry (PXRD) and scanning electron microscopy (SEM). The release of crystallization water occurs at a temperature below 200 °C; further ammonia can be detected above 200 °C. Full article
(This article belongs to the Special Issue Layered Materials and Their Applications)
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