Physicochemical Characterization of 2D Materials

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Inorganic Materials".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 626

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Limassol 3036, Cyprus
Interests: materials synthesis; crystallography; materials chemistry; physicochemical characterization; nanomaterials; nanoparticles; aerogel synthesis; spectroscopy
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Guest Editor
Division of Materials Physics, Ruđer Bošković Institute, HR-10000 Zagreb, Croatia
Interests: XRPD at ambient and non-ambient conditions; structure solution from XRPD data; synthesis/characterization of hybrid molecular ferroelectrics; structure–property relationship; materials characterization

Special Issue Information

Dear Colleagues,

Two-dimensional materials are becoming a hot topic in the modern research community, mostly due to their promising chemical, electrical, physical, and optical properties. Since the first discovery of graphene, an increasing number of 2D materials have been reported. In addition to graphene, these include TMDCs, silicene, phosphorene, MXenes, metal oxide nanosheets, etc. A fundamental question that remains unclear has to do with understanding the origin of the aforementioned promising properties. Two-dimensional materials can be developed through a variety of physicochemical techniques/approaches, which can generally be classified as either top–down techniques such as mechanical exfoliation, solution processing, and electromechanical exfoliation or bottom–up techniques such as chemical vapor deposition (CVD), hydrothermal synthesis, and pulsed laser deposition (PLD). Each approach has its pros and cons. To understand the origin of these promising physicochemical properties, a comprehensive investigation of structure–property relationships in 2D materials is required, which can be facilitated by a combination of experimental characterization techniques and theoretical modeling.

Dr. Melita Menelaou
Dr. Martina Vrankić
Guest Editors

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Keywords

  • 2D materials
  • structure–property relationships
  • physicochemical properties materials synthesis
  • thin films
  • graphene

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Published Papers (1 paper)

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Research

12 pages, 4037 KiB  
Article
Tuning Magneto-Birefringence of Two-Dimensional Vermiculite Dispersions Through Magnetic Ion Exchange
by An Wu, Tengxuan Cao, Hangkuan Ji, Wenjun Kuang, Jiarong Liu, Zichen Song, Jiandong Yao and Yi-Chao Zou
Inorganics 2025, 13(5), 139; https://doi.org/10.3390/inorganics13050139 - 29 Apr 2025
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Abstract
Liquid crystals based on dispersions of two-dimensional (2D) materials have recently been developed for light modulation, exhibiting superior performances compared to conventional organic liquid crystals in a variety of prototypical applications, including coloration, solar-blind communications and blue-light fluoresce. Among the diverse family of [...] Read more.
Liquid crystals based on dispersions of two-dimensional (2D) materials have recently been developed for light modulation, exhibiting superior performances compared to conventional organic liquid crystals in a variety of prototypical applications, including coloration, solar-blind communications and blue-light fluoresce. Among the diverse family of 2D liquid crystals, vermiculite-based liquid crystals stand out with advantages in low cost, ease of mass production and environmental sustainability, owing to the high natural abundance of the material. Here, we demonstrated magnetic-field tunable optics with 2D vermiculite dispersions prepared through a facile ‘exchange and redispersion’ method. By exploiting the intrinsic ion-exchange capability of clay minerals, we observed a significantly enhanced magneto-birefringence of the vermiculite dispersion upon replacing the native cations with magnetic ions, manifesting in a doubled Cotton–Mouton coefficient, representing the highest value among previous reports. Magnetization measurements reveal that there is a remarkable magnetic anisotropy in Fe ion-exchanged vermiculite samples in contrast to the isotropic magnetism of pristine vermiculite, which accounts for the observed enhancement of magneto-birefringence. Our findings demonstrate that ion exchange can serve as a simple and effective strategy to modulate the physical and chemical properties of 2D materials’ dispersions, thereby opening avenues for broader and more diverse applications. Full article
(This article belongs to the Special Issue Physicochemical Characterization of 2D Materials)
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