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Special Issue "Layered Crystal Materials: Design, Synthesis and Characterisation"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 715

Special Issue Editor

Dr. Evgeny V. Nazarchuk
E-Mail Website
Guest Editor
Department of Crystallography, Saint-Petersburg State University, 199034 St. Petersburg, Russia
Interests: minerals; crystal structures; layered minerals and materials; actinide compounds; uranyl crystal chemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Today, chemistry and physics of layered materials constitute an important and rapidly developing area of solid-state and materials science. Of particular interest is the pronounced anisotropy of many physical and even chemical properties which have permitted scientists to achieve outstanding results. Many layered minerals, including clays (kaolinite–serpentine, talc, and pyrophyllite, smectite, chlorite, etc.), layered double hydroxides, and titanosilicates are now used worldwide as materials or serve as natural archetypes for more elaborate synthetic analogs. Synthetic mineral-like and hybrid organic–inorganic compounds are of utmost interest and importance. The materials obtained by analogy to minerals are widely used in a variety of industrial processes. Various methods of rational design and targeted synthesis of layered materials have been and are being developed. Nonetheless, there are still many unsolved problems to address in chemistry and physics of natural and synthetic layered materials.

This Special Issue welcomes contributions on all respects of layered minerals and synthetic compounds. Suggested publications are expected to cover various issues concerning this fascinating group of materials and provide new data on mineralogy, geochemistry (including biogeochemistry), physics, and inorganic chemistry of layered minerals and materials.

Dr. Evgeny V. Nazarchuk
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2300 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

  • layered minerals and materials
  • clays
  • double hydroxides
  • titanosilicates
  • chemistry and physics of natural and synthetic layered materials

Published Papers (1 paper)

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Research

Communication
Regioselective Approach to Characterizing Increased Edge Availability in Layered Crystal Materials following Layer Expansion: Reaction of Kaolinite with Octadecyltrimethylammonium Salts
Materials 2022, 15(2), 588; https://doi.org/10.3390/ma15020588 - 13 Jan 2022
Cited by 1 | Viewed by 387
Abstract
In this paper, the regioselective reactions of kaolinite and methoxy-modified kaolinite (MeO-Kaol), methanol-expanded kaolinite, with octadecyltrimethylammonium salts are compared. This study mainly concerns the reactions of kaolinite or MeO-Kaol with octadecyltrimethylammonium chloride (C18TAC) in methanol and the subsequent exhaustive washing of the resultant [...] Read more.
In this paper, the regioselective reactions of kaolinite and methoxy-modified kaolinite (MeO-Kaol), methanol-expanded kaolinite, with octadecyltrimethylammonium salts are compared. This study mainly concerns the reactions of kaolinite or MeO-Kaol with octadecyltrimethylammonium chloride (C18TAC) in methanol and the subsequent exhaustive washing of the resultant products with ethanol. X-ray diffraction patterns of the products reveal no intercalation of C18TAC between pristine kaolinite layers. Additionally, intercalation and subsequent deintercalation of C18TAC proceed in the product using MeO-Kaol. In the Fourier-transform infrared spectra, the intensities of CH2 stretching bands of the product prepared using MeO-Kaol drastically increase compared to those using kaolinite. In addition, CH2 stretching bands of the product using kaolinite are hardly observed without enlarging the spectrum. The product using MeO-Kaol also displays mass loss in the range of 200–300 °C in the thermogravimetric curve and a nitrogen content with 0.15 mass% estimated using the CHN analysis. These results therefore demonstrate an increase in the available reactive edges in the layered crystal material following an expansion of the stacked layers. Full article
(This article belongs to the Special Issue Layered Crystal Materials: Design, Synthesis and Characterisation)
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