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Synthesis and Application of Functional Nanoparticles

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A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Nanoscience".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 6602

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Special Issue Editor

Dr. Nikolay A. Bulychev

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Guest Editor

Moscow Aviation Institute (National Research University), 125993 Moscow, Russia
Interests: nanomaterials; dispersed systems; ultrasound; cavitation; plasma; polymers; adsorption; interphase borders; metal oxides; semiconductors; hydrogen; composite materials; mechanics; fluid dynamics; functional materials

Special Issue Information

Dear Colleagues,

Nanomaterials are described as materials with at least one exterior dimension of 1 to 100 nanometers. Such objects can exist naturally, can be synthesized as products of physical and chemical processes, and also can be engineered to possess specific properties. Physical and chemical properties of these materials, in many cases, differ drastically from those of their bulk-form equivalents. If there is a specific feature in constitution and properties of nanomaterials providing them with the ability to serve as materials with a specific role, they are called functional nanomaterials. Functional nanomaterials are used in a wide range of applications, ranging from technics and industry to cosmetics and environmental preservation, due to their capacity to create materials in a specific way to perform a specified function. This Special Issue aims at gathering recent advances dealing with functional nanomaterials synthesis and application from the fundamental exploration of the synthetic procedures and mechanisms, examination of their properties and their modification to the interesting applications and innovations. This Special Issue also aims to bring together different communities (physicists, chemists, biologists, etc.) that do not often interact in order to help new research ideas and directions around the application of nanoscale effects for materials fabrication and application.

Dr. Nikolay A. Bulychev
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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

functional nanomaterials
nanoparticles
surface modification
synthesis
properties
application of nanomaterials

Published Papers (4 papers)

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Research

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20 pages, 13975 KiB

Open AccessArticle

Photochemical Synthesis of Noble Metal Nanoparticles: Influence of Metal Salt Concentration on Size and Distribution

by Shahad M. Aldebasi, Haja Tar, Abrar S. Alnafisah, Lotfi Beji, Noura Kouki, Fabrice Morlet-Savary, Fahad M. Alminderej, Lotfi M. Aroua and Jacques Lalevée

Int. J. Mol. Sci. 2023, 24(18), 14018; https://doi.org/10.3390/ijms241814018 - 13 Sep 2023

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Abstract

This paper explores the photochemical synthesis of noble metal nanoparticles, specifically gold (Au) and silver (Ag) nanoparticles, using a one-component photoinitiator system. The synthesis process involves visible light irradiation at a wavelength of 419 nm and an intensity of 250 mW/cm². The radical-generating capabilities of the photoinitiators were evaluated using electron spin resonance (ESR) spectroscopy. The main objective of this study was to investigate how the concentration of metal salts influences the size and distribution of the nanoparticles. Proposed mechanisms for the photochemical formation of nanoparticles through photoinitiated radicals were validated using cyclic voltammetry. The results showed that the concentration of AgNO₃ significantly impacted the size of silver nanoparticles, with diameters ranging from 1 to 5 nm at 1 wt% and 3 wt% concentrations, while increasing the concentration to 5 wt% led to an increase in the diameter of silver nanoparticles to 16 nm. When HAuCl₄ was used instead of AgNO₃, it was found that the average diameters of gold nanoparticles synthesized using both photoinitiators at different concentrations ranged between 1 and 4 nm. The findings suggest that variations in HAuCl₄ concentration have minimal impact on the size of gold nanoparticles. The photoproduction of AuNPs was shown to be thermodynamically favorable, with the reduction of HAuCl₄ to Au⁰ having ∆G values of approximately −3.51 and −2.96 eV for photoinitiators A and B, respectively. Furthermore, the photoreduction of Ag⁺¹ to Ag⁰ was demonstrated to be thermodynamically feasible, with ∆G values of approximately −3.459 and −2.91 eV for photoinitiators A and B, respectively, confirming the effectiveness of the new photoinitiators on the production of nanoparticles. The synthesis of nanoparticles was monitored using UV-vis absorption spectroscopy, and their sizes were determined through particle size analysis of transmission electron microscopy (TEM) images. Full article

(This article belongs to the Special Issue Synthesis and Application of Functional Nanoparticles)

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13 pages, 2988 KiB

Open AccessArticle

Is a 2D Nanostructured Surface Capable of Changing the Corrosion and Magnetic Properties of an Amorphous Alloy?

by Irina Kuznetsova, Olga Lebedeva, Dmitry Kultin, Natalia Perova, Konstantin Kalmykov, Petr Chernavskii, Nikolai Perov and Leonid Kustov

Int. J. Mol. Sci. 2023, 24(17), 13373; https://doi.org/10.3390/ijms241713373 - 29 Aug 2023

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Abstract

In this work, an attempt was made to reveal and explain the influence of the process of formation of 2D nanostructures at the surface of an amorphous alloy (an alloy with the composition Co75Si15Fe5Cr4.5Al0.5 (in at.%) was used for this purpose) on the corrosion and magnetic properties of such an alloy. Two-dimensional nanostructures (nanocells of 100–150 nm in size, which were obtained by anodizing the initial sample in an ionic liquid) are essentially a pattern on the surface of the sample, and they cannot completely cover and block the surface from external effects. It was postulated that the presence of these nanostructures during corrosion and magnetic tests has no significant effect. However, a noticeable inhibition effect was observed during corrosion tests and a less noticeable (but still detectable) effect was observed during magnetic tests. The authors believe that the effect obtained, with a detailed study, can be used to increase the corrosion resistance and to improve the properties of traditional magnetic materials. Full article

(This article belongs to the Special Issue Synthesis and Application of Functional Nanoparticles)

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13 pages, 3674 KiB

Open AccessCommunication

Colorimetric Detection of Acenaphthene and Naphthalene Using Functionalized Gold Nanoparticles

by Kai-Jen Chuang, Meng-Ru Dong, Purnima Laishram and Gui-Bing Hong

Int. J. Mol. Sci. 2023, 24(7), 6635; https://doi.org/10.3390/ijms24076635 - 2 Apr 2023

Viewed by 1464

Abstract

Polycyclic aromatic hydrocarbons are a class of chemicals that occur naturally. They generally demonstrate a high degree of critical toxicity towards humans. Acenaphthene and naphthalene contain compounds that are commonly found in the environment as compared to other PAHs. Consequently, a reliable method of detecting PAHs is crucial for the monitoring of water quality. A colorimetric method based on sodium nitrite-functionalized gold nanoparticles was developed in this study for acenaphthene and naphthalene detection. Different functionalized parameters are determined for the optimization of assay conditions. A linear relationship was found in the analyte concentration range of 0.1–10 ppm with the limit of detection for acenaphthene and naphthalene being 0.046 ppm and 0.0015 ppm, respectively, under the optimized assay conditions. The method’s recovery rate for actual samples falls within the range of 98.4–103.0%. In selective and anti-interference tests, the presence of cations and anions has minimal impact on the detection of the analyte. The colorimetric detection method proposed in this study effectively determines the presence of the analyte in real water samples and has a high recovery rate. Full article

(This article belongs to the Special Issue Synthesis and Application of Functional Nanoparticles)

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Review

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25 pages, 9463 KiB

Open AccessReview

Traditional vs. Microfluidic Synthesis of ZnO Nanoparticles

by Maria Leila Popa, Manuela Daniela Preda, Ionela Andreea Neacșu, Alexandru Mihai Grumezescu and Octav Ginghină

Int. J. Mol. Sci. 2023, 24(3), 1875; https://doi.org/10.3390/ijms24031875 - 18 Jan 2023

Cited by 16 | Viewed by 2562

Abstract

Microfluidics provides a precise synthesis of micro-/nanostructures for various applications, including bioengineering and medicine. In this review article, traditional and microfluidic synthesis methods of zinc oxide (ZnO) are compared concerning particle size distribution, morphology, applications, reaction parameters, used reagents, and microfluidic device materials. Challenges of traditional synthesis methods are reviewed in a manner where microfluidic approaches may overcome difficulties related to synthesis precision, bulk materials, and reproducibility. Full article

(This article belongs to the Special Issue Synthesis and Application of Functional Nanoparticles)

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