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Nanochemistry: A Chemical Approach to Nanomaterials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 6550

Special Issue Editors


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Guest Editor
Ecole Polytechnique Fédérale de Lausanne, EPFL-STI-IMX-LTP, Station 12, CH-1015 Lausanne, Switzerland
Interests: nanoparticles; synthesis; materials sciences; characterization; functionalization

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Guest Editor
New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
Interests: smart nanomaterial synthesis; physical characterizations; surface modification; biological assessment; drug delivery

Special Issue Information

Dear Colleagues,

Nanochemistry, an emerging new field where nanoscience meets chemistry, emphasizes the study and development of preparation methods of useful materials with nanometer-size dimensions (1–100 nm). Nanochemistry is associated with the synthesis of building blocks which are dependent on size, surface, shape, and defect properties and focuses on how these individual atoms can assemble into larger structures, and the behavior they exhibit.

Nanochemists work from the atom up, with the aim of engineering nanosized materials with unique magnetic, electronic, optical, chemical, and mechanical behaviors attributable only to their nanometer size. Using single atoms as building blocks offers new ways to create innovative materials, the opportunity to create the smallest features possible depending on the targeted application. Nanochemistry has uses in chemical, physical and materials science, engineering, and biological and medical applications.

The use of engineered nanomaterials for a specific application is an important first step in developing nanomaterials with well-defined properties. These properties are dependent on a series of complex parameters that have to be considered. From an engineering point-of-view, it is essential to carefully consider the design of the product in relation to its specification and use.

Nanochemists develop new pharmaceutical products, structural materials, electronic device components, light-emitting materials, and numerous other products, many already available commercially. Nanochemists can also study the health and safety effects of airborne and waterborne nanosized particulates or use nanoparticles to clean up or neutralize pollutants.

The Special Issue focuses on the latest developments in nanochemistry with particular attention to:

  • Conventional synthesis of nanomaterial;
  • Green synthesis of nanomaterials (such as microwave, plant extracts, etc.);
  • Surface functionalization of nanomaterials;
  • Applications of nanomaterials.

Dr. Irena Markovic Milosevic
Dr. Farah Benyettou
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. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 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

  • nanoparticles
  • nanomaterials
  • synthesis
  • functionalization
  • applications

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Published Papers (2 papers)

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Research

14 pages, 4084 KiB  
Article
Silk Bionanocomposites for Organic Dye Absorption and Degradation
by Cristina Belda Marín, Christophe Egles, Jessem Landoulsi and Erwann Guénin
Appl. Sci. 2022, 12(18), 9152; https://doi.org/10.3390/app12189152 - 13 Sep 2022
Cited by 7 | Viewed by 1574
Abstract
Organic dyes are extensively used in the textile, paper and paint industries, among others. However, the lack of efficient treatment of disposals leads to the release of these toxic molecules into the environment, which has an enormous impact on living organisms. Dye absorption [...] Read more.
Organic dyes are extensively used in the textile, paper and paint industries, among others. However, the lack of efficient treatment of disposals leads to the release of these toxic molecules into the environment, which has an enormous impact on living organisms. Dye absorption is the most common approach used to tackle this problem. However, the ideal solution should include dye degradation and absorbent regeneration, reducing the environmental impact of the procedure. Dye degradation can be achieved by catalysis. Recently, silk fibroin (SF) has been shown to have incredible absorbent properties. Herein, we characterized the capacity of SF hydrogels to absorb methylene blue (MB), an extensively used cationic organic dye. Moreover, the effect of a pretreatment of the SF hydrogel at different pH and ionic environments is also studied. Interestingly, opposite behaviors are observed when absorbing MB or brilliant blue (an anionic dye), suggesting an electrostatic-based interaction. Furthermore, the regeneration of a MB-saturated SF hydrogel by immersion in acidic pH and its further reuse were evaluated. Finally, the SF hydrogel was coupled with a gold nanoparticle catalyst, which resulted in a material able to absorb and catalyze the MB reduction by sodium borohydride in situ, leading to dye degradation. Overall, this work presents a biodegradable reusable material able to absorb and reduce MB in aqueous media. Full article
(This article belongs to the Special Issue Nanochemistry: A Chemical Approach to Nanomaterials)
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11 pages, 3445 KiB  
Article
Biocompatibility and Antioxidant Capabilities of Carbon Dots Obtained from Tomato (Solanum lycopersicum)
by Sandra Rodríguez-Varillas, Tania Fontanil, Álvaro J. Obaya, Alfonso Fernández-González, Clarissa Murru and Rosana Badía-Laíño
Appl. Sci. 2022, 12(2), 773; https://doi.org/10.3390/app12020773 - 13 Jan 2022
Cited by 20 | Viewed by 4101
Abstract
Since their discovery in 2004, carbon dots have attracted strong interest in the scientific community due to their characteristic properties, particularly their luminescence and their ease of synthesis and derivatization. Carbon dots can be obtained from different carbon sources, including natural products, resulting [...] Read more.
Since their discovery in 2004, carbon dots have attracted strong interest in the scientific community due to their characteristic properties, particularly their luminescence and their ease of synthesis and derivatization. Carbon dots can be obtained from different carbon sources, including natural products, resulting in a so-called ’green synthesis’. In this work, we obtain carbon dots from tomato juice in order to obtain nanoparticles with the antioxidant capabilities of the natural antioxidants present in that fruit. The obtained material is characterized regarding nanoparticle size distribution, morphology, surface functional groups and optic properties. Antioxidant properties are also evaluated through the DPPH method and their cytotoxicity is checked against human dermal fibroblast and A549 cell-lines. The results indicate that carbon dots obtained from tomato have a higher antioxidant power than other already-published antioxidant carbon dots. The bandgap of the synthesized materials was also estimated and coherent with the literature values. Moreover, carbon dots obtained from tomato juice are barely toxic for healthy cells up to 72 h, while they induce a certain cytotoxicity in A549 lung carcinoma cells. Full article
(This article belongs to the Special Issue Nanochemistry: A Chemical Approach to Nanomaterials)
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