Dear Colleagues,

Nanomaterials have been a major focus of recent research, and represent a milestone of nanoscience and nanotechnology. They are a broad and continuously growing area of development. Their impact on modern industry is huge, and also boost both academia and education. Thus, the synthesis of novel nanomaterials, aiming at new potential applications, is fundamental in the development of high-tech industry and the implementation of scientific achievements in our daily lives.

The goal of the current Special Issue on New Insights into Design and Properties of Nanomaterials is to attract manuscripts that present state-of-the-art studies on the preparation of novel nanomaterials with a wide range of applications, from optics and optoelectronics, photovoltaics, catalysis, sensing, biomedicine, and more. We also welcome reports on new or modified approaches that lead to new nanomaterials with enhanced properties, as well as those on new techniques that help to achieve such nanomaterials.

Articles published in this Issue will cover new approaches to preparation and characterization which smooth the route from the design to the realization of nanostructures with properties that are highly anticipated for various applications. Although we will abbreviate the submission of all reports on nanomaterials prepared by means of physical, chemical and even biological processes, special attention will be paid to products prepared via environment-friendly and reagent-saving methods. We especially welcome experimental and computational studies that reveal the relationship between structure and properties, and then demonstrate the synthesis of nanomaterials with desired structure and properties.

In addition to more conventional inorganic nanomaterials, research on the directed synthesis of molecular nanostructures (supramolecular assemblies, molecular frameworks, etc.) is also expected to enrich the content of this Issue. Papers developing our understanding of how the use of molecular precursors may govern the composition, morphology, and surface chemistry of nanomaterials also meet the objectives of this project.

In summary, this Special Issue welcomes communications, full papers and reviews from all researchers working on novel nanomaterials, from their design to synthesis, characterization, and application.

Prof. Dr. Sergei Kulinich
Dr. Valery A. Svetlichnyi
Dr. Neli Mintcheva
Guest Editors

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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. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

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• novel nanomaterials
• molecular nanostructures
• physical, chemical, and biological methods for nanomaterial preparation
• optical, photovoltaic, catalytic, sensing, antibacterial properties
• structure–properties relationships

• New Insight into Design and Properties of Nanomaterials in Materials (10 articles)

Title: Silver-containing zeolites – preparation, composition and antibacterial properties
Authors: Gospodinka Gicheva 1 g.gicheva@mgu.bg Neli Mintcheva 1, 3 nnmintcheva@mgu.bg Marinela Panayotova 1 marichim@mgu.bg Orlin Gemishev 2 o.gemishev@uni-sofia.bg Sergei A. Kulinich 3, 4 skulinich@tokai
Affiliation: 1 Department of Chemistry, University of Mining and Geology, 1700 Sofia, Bulgaria 2 Faculty of Biology, University of Sofia ‘’St. Kliment Ohridski’’, 1000 Sofia, Bulgaria 3 Research Institute of Science and Technology, Tokai University, Hiratsuka 259-1292, Kanagawa, Japan 4 Department of Mechanical Engineering, Tokai University, Hiratsuka 259-1292, Kanagawa, Japan
Abstract: In this paper, a comparative study of AgNPs-zeolite nanocomposites in respect to the methods of preparation, structure, morphology and antibacterial activity against E. coli was reported. Ag nanoparticles in zeolite composites were prepared by solid state thermal reduction of immobilized silver ions in zeolite network, and wet chemical reduction with mild (Na-citrate) and strong (NaBH4) reducing agents in aqueous solution. The obtained materials were characterized by different methods such as XRD, DRUV-vis, XPS, TEM. The decoration of nanocomposites with AgNPs as well as co-existence of Ag+ ions in zeolite framework was confirmed by microscopic and spectroscopic methods. Antibacterial properties of newly-obtained Ag-containing nanomaterials were examined. The maximum efficiency in inhibition of bacterial growth was observed for the composite prepared under controlled heating of Ag-loaded zeolite.

Title: Au functionalized Liquid-Phase Exfoliated MoS2 as sensing materials for chemoresistive gas sensors
Authors: Abderrahim Yassar
Affiliation: /
Abstract: /

Title: Facile self-template synthesis of porous Fe2O3 nanosheet-assembled hollow spheres with fast toluene detection
Authors: Yi, Zeng
Affiliation: College of Materials Science and Engineering, Jilin University, Changchun 130012, PR China
Abstract: /

Title: 2D MoSe2/Poly(vinyl alcohol) nanocomposite films with broadband optical absorption
Authors: Suman Chhetri, Anh Tuan Nguyen, Nicolas Gaillard, Woochul Lee
Affiliation: Suman Chhetri, Anh Tuan Nguyen, Nicolas Gaillard, Woochul Lee
Abstract: Abstract: Highly solar light-absorbing poly(vinyl alcohol) (PVA) nanocomposite films have garnered wide attention in fields such as optoelectronics, solar energy harvesting, and photothermal therapy. However, fabricating PVA nanocomposite films with a broad range of solar absorption using facile and cost-effective preparation processes remains challenging. Herein, nanocomposite films of PVA incorporating various concentrations of MoSe2 were prepared using the solution casting technique. Scanning electron microscopy (SEM) shows homogenous dispersion of MoSe2 in the PVA matrix, while atomic force microscopy (AFM) revels increasing surface roughness with MoSe2 content, reaching a plateau after 40 wt%. With the increase in the concentration of MoSe2, the nanocomposite films exhibited interesting light absorption characteristics. After 5 wt% MoSe2, no significant increase in UV/Vis region was observed, however NIR region showed prominent enhancement. The high light absorption of PVA nanocomposite films across the entire range from 200 nm to 2500 nm is likely due to the porous structure of nanoflower MoSe2 and the presence of its mixed-phase.