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Applied Sciences
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Green Synthesis, Processing and Application of Nanocomposite Materials 2021
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Green Synthesis, Processing and Application of Nanocomposite Materials 2021

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

Deadline for manuscript submissions: closed (20 December 2021) | Viewed by 11698

Special Issue Editor

Dr. Adina Musuc

E-Mail Website
Guest Editor
“Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei St., 060021 Bucharest, Romania
Interests: physical chemistry, physico-chemical characterization of materials; drug delivery; pharmaceuticals development; thermal analysis; kinetics; biopolymers, cyclodextrin inclusion complexes; hydrogels; biomaterials for biomedical applications; oxide materials design/synthesis and the thermoreactivity of precursor-oxide transformations; green chemistry; thermal properties; physicochemical characterization; nanomaterials for biomedicine; nanomaterials for energy applications; catalysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

I invite you to contribute to a Special Issue of Applied Sciences: “Green Synthesis, Processing and Application of Nanocomposite Materials 2021”. The main objective of this Special Issue is focused on green synthesis development of nanocomposite materials and their applications.

In recent years, nanocomposite materials have received particular interest from the scientific community due to for their fascinating size- and shape-dependent properties and implicit wide ranging applications. Such materials are advantageous for many applications, including controlled drug release, biomedical devices, photocatalysis, biosensor technology, synthetic biomaterials and adsorption and separation technologies. Nanocomposite materials are the key to generating new products created by new technological developments.This Special Issue of Applied Sciences aims to cover the latest developments related to nanocomposite material synthesis in an eco-friendly manner, processing and characterization, and their wide applicability in many fields: catalytic supports, gas storage, molecular sieves, porous membranes and electrodes. 

Dr. Adina Magdalena Musuc
Guest Editor

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

  • green chemistry
  • nanocomposites
  • synthesis routes
  • thermal properties
  • physicochemical characterization
  • material applications
  • nanomaterials for biomedicine
  • nanomaterials for energy applications
  • catalysis
  • environmental chemistry

Published Papers (5 papers)

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Research

14 pages, 856 KiB  
Article
Modification of Magnetic Graphene Oxide by an Earth-Friendly Deep Eutectic Solvent to Preconcentrate Ultratrac Amounts of Pb(II) and Cd(II) in Legume Samples
by Melika Hejazikhah and Parastoo Jamshidi
Appl. Sci. 2023, 13(9), 5702; https://0-doi-org.brum.beds.ac.uk/10.3390/app13095702 - 05 May 2023
Cited by 4 | Viewed by 1157
Abstract
A novel magnetic solid-phase extraction adsorbent using deep eutectic solvent-coated magnetic graphene oxide (EgLiCl-mGO) was proposed for simultaneous preconcentration of Pb(II) and Cd(II). The nanocomposite was characterized by Fourier Transform Infrared Spectroscopy, X-ray diffractometry, and alternative gradient force magnetometer. Parameters that could affect [...] Read more.
A novel magnetic solid-phase extraction adsorbent using deep eutectic solvent-coated magnetic graphene oxide (EgLiCl-mGO) was proposed for simultaneous preconcentration of Pb(II) and Cd(II). The nanocomposite was characterized by Fourier Transform Infrared Spectroscopy, X-ray diffractometry, and alternative gradient force magnetometer. Parameters that could affect the preconcentration recoveries of the target ions were investigated via the one-factor-at-a-time method. The optimum conditions are pH of 4 ± 0.5, EgLiCl-mGO amount of 1.0 × 10−2 g, adsorption time of 5 min, eluent of HNO3 (1 mL, 2 mol L−1), and desorption time of one minute. The swelling property of the adsorbent versus pH was studied. The linearity of the dynamic range for Pb(II) (5.0 × 10−6–4.0 × 10−4 g L−1) and Cd(II) (5.0 × 10−6–15 × 10−5 g L−1) was recorded. The limits of detection were Pb(II): 1.2 × 10−6 g L−1 and Cd(II): 47 × 10−8 g L−1. The preconcentration factor of 50 was calculated for both ions and the relative standard deviations were 1.27% for Pb(II) and 0.94% for Cd(II). Reusability, effect of interference ions, selectivity, isotherm adsorption, kinetic adsorption, and thermodynamic adsorption were established. The adsorbent was successful at preconcentrating the ions in legumes. Full article
(This article belongs to the Special Issue Green Synthesis, Processing and Application of Nanocomposite Materials 2021)
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20 pages, 6438 KiB  
Article
Eco-Friendly Synthesis and Comparative In Vitro Biological Evaluation of Silver Nanoparticles Using Tagetes erecta Flower Extracts
by Ana Flavia Burlec, Monica Hăncianu, Irina Macovei, Cornelia Mircea, Adrian Fifere, Ioana-Andreea Turin-Moleavin, Cristina Tuchiluș, Silvia Robu and Andreia Corciovă
Appl. Sci. 2022, 12(2), 887; https://0-doi-org.brum.beds.ac.uk/10.3390/app12020887 - 16 Jan 2022
Cited by 5 | Viewed by 2175
Abstract
The present study reports an eco-friendly synthesis method of silver nanoparticles (AgNPs) using two different extracts (aqueous and ethanolic) of Tagetes erecta flowers. When exposed to different biocompounds found in the plant, silver ions are reduced, thus, resulting in the green synthesis of [...] Read more.
The present study reports an eco-friendly synthesis method of silver nanoparticles (AgNPs) using two different extracts (aqueous and ethanolic) of Tagetes erecta flowers. When exposed to different biocompounds found in the plant, silver ions are reduced, thus, resulting in the green synthesis of nanoparticles. After performing the optimization of synthesis, the obtained AgNPs were characterized using various techniques. The UV–Vis spectrum of the synthesized nanoparticles showed maximum peaks at 410 and 420 nm. TEM analysis revealed that the particles were spherical with a size ranging from 10 to 15 nm, and EDX analysis confirmed the presence of silver metal. The average diameter value obtained through DLS analysis for the two types of AgNPs (obtained using aqueous and ethanolic extracts) was 104 and 123 nm. The Zeta potentials of the samples were −27.74 mV and −26.46 mV, respectively, which indicates the stability of the colloidal solution. The antioxidant and antimicrobial activities assays showed that nanoparticles obtained using the aqueous extract presented enhanced antioxidant activity compared to the corresponding extract, with both types of AgNPs exhibiting improved antifungal properties compared to the initial extracts. Full article
(This article belongs to the Special Issue Green Synthesis, Processing and Application of Nanocomposite Materials 2021)
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12 pages, 2918 KiB  
Article
Novel Sodium Alginate/Polyvinylpyrrolidone/TiO2 Nanocomposite for Efficient Removal of Cationic Dye from Aqueous Solution
by Noha A. Elessawy, Marwa H. Gouda, Mohamed S. Elnouby, Hoda F. Zahran, Aly Hashim, Mona M. Abd El-Latif and Diogo M. F. Santos
Appl. Sci. 2021, 11(19), 9186; https://0-doi-org.brum.beds.ac.uk/10.3390/app11199186 - 02 Oct 2021
Cited by 11 | Viewed by 1997
Abstract
The combination of adsorption and photodegradation processes is an effective technique for the removal of dye contaminants from water, which is motivating the development of novel adsorbent-photocatalyst materials for wastewater treatment. Herein, novel nanocomposite porous beads were developed using titanium dioxide (TiO2 [...] Read more.
The combination of adsorption and photodegradation processes is an effective technique for the removal of dye contaminants from water, which is motivating the development of novel adsorbent-photocatalyst materials for wastewater treatment. Herein, novel nanocomposite porous beads were developed using titanium dioxide (TiO2) nanotubes embedded in a sodium alginate (SA)/polyvinylpyrrolidone (PVP) matrix using calcium chloride solution as a crosslinker. The prepared nanocomposite beads’ performance was examined as an adsorbent-photocatalyst for the breakdown of methylene blue in aqueous solutions. Several operation factors influencing the dye decomposition process, including photocatalyst dosage, illumination time, light intensity, and stability were investigated. The findings demonstrated that the removal activity of the beads changed with the TiO2 weight ratio in the composite. It was found that SA/PVP/TiO2-3 nanocomposite beads presented the greatest deterioration efficiency for methylene blue dye (98.9%). The cycling ability and reusability of the prepared SA/PVP/TiO2 nanocomposite beads recommend their use as efficient, eco-friendly materials for the treatment of wastewaters contaminated with cationic dyes. Full article
(This article belongs to the Special Issue Green Synthesis, Processing and Application of Nanocomposite Materials 2021)
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22 pages, 2140 KiB  
Article
Investigation into the Antioxidant Activity of Standardized Plant Extracts with Pharmaceutical Potential
by Elena Moroșan, Magdalena Mititelu, Doina Drăgănescu, Dumitru Lupuliasa, Emma Adriana Ozon, Oana Karampelas, Cerasela Elena Gîrd, Corina Aramă, Marilena Viorica Hovaneț, Adina Magdalena Musuc and Ana Corina Ioniță
Appl. Sci. 2021, 11(18), 8685; https://0-doi-org.brum.beds.ac.uk/10.3390/app11188685 - 17 Sep 2021
Cited by 4 | Viewed by 2265
Abstract
Given the important role of antioxidants in the cellular degeneration process, as well as the increased interest in recent years related to the use of natural antioxidants in therapy, the present study aims to investigate the antioxidant activity of a new pharmaceutical product [...] Read more.
Given the important role of antioxidants in the cellular degeneration process, as well as the increased interest in recent years related to the use of natural antioxidants in therapy, the present study aims to investigate the antioxidant activity of a new pharmaceutical product containing natural antioxidants extracted from plant raw materials. In a first step, the product conventionally named “CILTAG”, containing a mixture in equal proportions of 10% hydroalcoholic extractive solutions of dried plant raw materials from Medicaginis herba, Trifolii pratense flores, Ginkgo bilobae folium, Myrtilli fructus, and Cynosbati fructus, was obtained. In the second stage, the antioxidant activity of the hydroalcoholic extractive solutions included in the pharmaceutical product was tested by chemiluminescence and electrochemical methods and by the superoxide dismutase (SOD) method. The electrochemical determination of the antioxidant capacity of hydroalcoholic extractive solutions was based on a method that provides an indirect evaluation of the presumed antioxidant properties of some compounds using Trolox (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid), as a standard measurement. The experimental results indicate a significant antioxidant potential for both the analyzed plant extractive solutions that are part of CILTAG and the final product. Full article
(This article belongs to the Special Issue Green Synthesis, Processing and Application of Nanocomposite Materials 2021)
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12 pages, 3303 KiB  
Article
Gelatin-Based Film Integrated with Copper Sulfide Nanoparticles for Active Packaging Applications
by Swarup Roy and Jong-Whan Rhim
Appl. Sci. 2021, 11(14), 6307; https://0-doi-org.brum.beds.ac.uk/10.3390/app11146307 - 08 Jul 2021
Cited by 37 | Viewed by 3003
Abstract
Gelatin-based multifunctional composite films were prepared by reinforcing various amounts of copper sulfide nanoparticles (CuSNP, 0.0, 0.5, 1.0, and 2.0 wt %), and the effect of CuSNP on the film was evaluated by analyzing its physical and antibacterial properties. CuSNP makes a compatible [...] Read more.
Gelatin-based multifunctional composite films were prepared by reinforcing various amounts of copper sulfide nanoparticles (CuSNP, 0.0, 0.5, 1.0, and 2.0 wt %), and the effect of CuSNP on the film was evaluated by analyzing its physical and antibacterial properties. CuSNP makes a compatible film with gelatin. The inclusion of CuSNP significantly enhanced the UV blocking, mechanical strength, and water vapor barrier properties of the gelatin film. The inclusion of CuSNP of 1.0 wt % or less did not affect the transparency of the gelatin film. When 2.0 wt % of CuSNP was mixed, the hydrophilicity of the gelatin film did not change noticeably, but its thermal properties slightly increased. Moreover, the gelatin/CuSNP composite film presented effective antibacterial activity against E. coli and some activity against L. monocytogenes. Gelatin/CuSNP composite films with better functional and physical properties can be used for food packaging or biomedical applications. Full article
(This article belongs to the Special Issue Green Synthesis, Processing and Application of Nanocomposite Materials 2021)
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