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Silver Nanoparticles: Design, Synthesis, and Applications

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 21162

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Special Issue Editors

Dr. Paweł Piotr Pomastowski

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Guest Editor

Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, Torun, Poland
Interests: synthesis of metal nanocomposites and metal oxides; synthesis of silver nanoparticles and zinc oxide; spectrometric analysis in the MALDI TOF-TOF MS system; electrophoretic analysis; spectroscopic techniques; identification of microorganisms
Special Issues, Collections and Topics in MDPI journals

Dr. Viorica Railean-Plugaru

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Guest Editor

1. Department of Public Health Protection and Animal Welfare, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Toruń, Poland
2. Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Torun, Wileńska 4, 87-100 Torun, Poland
Interests: biological synthesis; flow cytometry; spectroscopy; microscopy; nanocomposites; antimicrobial activity; effectiveness; microorganisms
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue on “Silver Nanoparticles: Design, Synthesis, and Applications” will gather interdisciplinary works in the fields of material, biomedical, and chemical sciences. Silver nanoparticles still bring new application opportunities for nanotechnology. The Special Issue is dedicated to the novel synthesis of nanomaterials and their hybrid systems and nanocomposites included in physical, chemical, and biological approaches, as well as challenges such as the description of mechanism formation of nanoparticles in various systems, and their stability and physicochemical characteristics.

We are specifically seeking research articles and reviews that cover different applications such as electronic devices and solar energy harvesting, advanced analytical techniques, medical diagnostics and treatment, catalysis, 3D printing materials, and environment applications. The action mechanism related to antimicrobial, antifungal, and antiviral properties and the cytotoxicity and ecotoxicity effects of AgNPs will be welcome. Other aspects of application includes florescence, surface Plasmon resonance, and nanostructure laser desorption/ionization properties of silver nanoparticles.

The special issue is also dedicated to 70th birthday of Professor Bogusław Buszewski. He made a significant impact on the field of separation science and functionalization of the bio- and colloids surface.

Dr. Paweł Piotr Pomastowski
Dr. Viorica Railean-Plugaru
Guest Editors

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Keywords

Design and synthesis methods of silver nanoparticles
Description mechanism of silver nanoparticle formation
Nanostructure laser desorption/ionization
Mechanism of ionization
Surface plasmon resonance
Biomedical properties of AgNPs
Action mechanism
Flow cytometry

Published Papers (6 papers)

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Research

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12 pages, 4050 KiB

Open AccessCommunication

Silver Nanostructured Substrates in LDI-MS of Low Molecular Weight Compounds

by Gulyaim Sagandykova, Piotr Piszczek, Aleksandra Radtke, Radik Mametov, Oleksandra Pryshchepa, Dorota Gabryś, Mateusz Kolankowski and Paweł Pomastowski

Materials 2022, 15(13), 4660; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15134660 - 02 Jul 2022

Cited by 2 | Viewed by 1702

Abstract

Mass spectrometric techniques can provide data on the composition of a studied sample, utilizing both targeted and untargeted approaches to solve various research problems. Analysis of compounds in the low mass range has practical implications in many areas of research and industry. Laser desorption ionization techniques are utilized for the analysis of molecules in a low mass region using low sample volume, providing high sensitivity with low chemical background. The fabrication of substrates based on nanostructures to assist ionization with well-controlled morphology may improve LDI-MS efficiency for silver nanoparticles with plasmonic properties. In this work, we report an approach for the preparation of silver nanostructured substrates applied as laser desorption ionization (LDI) plates, using the chemical vapor deposition (CVD) technique. Depending on the mass of used CVD precursor, the approach allowed the synthesis of LDI plates with tunable sensitivity for various low molecular weight compounds in both ion-positive and ion-negative modes. Reduced chemical background and sensitivity to small biomolecules of various classes (fatty acids, amino acids and water-soluble metabolites) at nanomolar and picomolar detection levels for lipids such as triacylglycerols, phosphatidylethanolamines and lyso-phosphatidylcholines represent an emerging perspective for applications of LDI-MS plates for the collection of molecular profiles and targeted analysis of low molecular weight compounds for various purposes. Full article

(This article belongs to the Special Issue Silver Nanoparticles: Design, Synthesis, and Applications)

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15 pages, 3404 KiB

Open AccessArticle

Biogenic Synthesis and Characterization of Antioxidant and Antimicrobial Silver Nanoparticles Using Flower Extract of Couroupita guianensis Aubl.

by Reetika Singh, Christophe Hano, Francesco Tavanti and Bechan Sharma

Materials 2021, 14(22), 6854; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14226854 - 13 Nov 2021

Cited by 10 | Viewed by 2093

Abstract

Couroupita guianensis Aubl. is an important medicinal tree. This tree is rich in various phytochemicals, and is therefore used as a potent antioxidant and antibacterial agent. This plant is also used for the treatment of various diseases. Here, we have improved its medicinal usage with the biosynthesis of silver nanoparticles (AgNPs) using Couroupita guianensis Aubl. flower extract as a reducing and capping agent. The biosynthesis of the AgNPs reaction was carried out using 1 mM of silver nitrate and flower extract. The effect of the temperature on the biosynthesis of AgNPs was premeditated by room temperature (25 °C) and 60 °C. The continuous stirring of the reaction mixture at room temperature for approximately one hour resulted in the successful formation of AgNPs. A development of a yellowish brown color confirmed the formation of AgNPs. The efficacious development of AgNPs was confirmed by the characteristic peaks of UV–Vis, X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy spectra. The biosynthesized AgNPs exhibited significant free radical scavenging activity through a DPPH antioxidant assay. These AgNPs also showed potent antibacterial activity against many pathogenic bacterial species. The results of molecular dynamics simulations also proved the average size of NPs and antibacterial potential of the flower extract. The observations clearly recommended that the green biosynthesized AgNPs can serve as effective antioxidants and antibacterial agents over the plant extract. Full article

(This article belongs to the Special Issue Silver Nanoparticles: Design, Synthesis, and Applications)

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11 pages, 3786 KiB

Open AccessArticle

Low Sintering Temperature Nano-Silver Pastes with High Bonding Strength by Adding Silver 2-Ethylhexanoate

by Steve Lien-Chung Hsu, Yen-Ting Chen, Meng-Liang Chen and In-Gann Chen

Materials 2021, 14(20), 5941; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14205941 - 10 Oct 2021

Cited by 12 | Viewed by 2104

Abstract

A silver precursor (silver 2-ethylhexanoate) and silver nanoparticles were synthesized and used to prepare a low sintering temperature nano-silver paste (PM03). We optimized the amount of silver 2-ethylhexanoate added and the sintering temperature to obtain the best performance of the nano-silver paste. The relationship between the microstructures and properties of the paste was studied. The addition of silver 2-ethylhexanoate resulted in less porosity, leading to lower resistivity and higher shear strength. Thermal compression of the paste PM03 at 250 °C with 10 MPa pressure for 30 min was found to be the proper condition for copper-to-copper bonding. The resistivity was (3.50 ± 0.02) × 10⁻⁷ Ω∙m, and the shear strength was 57.48 MPa. Full article

(This article belongs to the Special Issue Silver Nanoparticles: Design, Synthesis, and Applications)

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Graphical abstract

15 pages, 6955 KiB

Open AccessArticle

Bacterial Mediated Rapid and Facile Synthesis of Silver Nanoparticles and Their Antimicrobial Efficacy against Pathogenic Microorganisms

by Md. Amdadul Huq and Shahina Akter

Materials 2021, 14(10), 2615; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14102615 - 18 May 2021

Cited by 40 | Viewed by 2995

Abstract

In the present study, silver nanoparticles (AgNPs), biosynthesized using culture supernatant of bacterial strain Paenarthrobacter nicotinovorans MAHUQ-43, were characterized and their antimicrobial activity was investigated against both Gram-positive Bacillus cereus and Gram-negative bacteria Pseudomonas aeruginosa. Bacterial-mediated synthesized AgNPs were characterized by UV-Visible (UV-Vis) spectrophotometer, field emission-transmission electron microscopy (FE-TEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and dynamic light scattering (DLS) analysis. The UV-Vis spectral analysis showed the absorption maxima at 466 nm which assured the synthesis of AgNPs. The FE-TEM analysis revealed the spherical shape of nanoparticles with the size range from 13 to 27 nm. The EDX and XRD analysis ensured the crystalline nature of biosynthesized AgNPs. The FTIR analysis revealed the involvement of different biomolecules for the synthesis of AgNPs as reducing and capping agents. The bacterial-mediated synthesized AgNPs inhibited the growth of pathogenic strains B. cereus and P. aeruginosa and developed a clear zone of inhibition (ZOI). The MIC and MBC for both pathogens were 12.5 µg/mL and 25 µg/mL, respectively. Moreover, field emission scanning electron microscopy analysis revealed that the synthesized AgNPs can destroy the outer membrane and alter the cell morphology of treated pathogens, leading to the death of cells. This study concludes the eco-friendly, facile and rapid synthesis of AgNPs using P. nicotinovorans MAHUQ-43 and synthesized AgNPs showed excellent antimicrobial activity against both Gram-positive and Gram-negative pathogens. Full article

(This article belongs to the Special Issue Silver Nanoparticles: Design, Synthesis, and Applications)

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20 pages, 9457 KiB

Open AccessArticle

Zinc Oxide and Silver Nanoparticle Effects on Intestinal Bacteria

by Ami Yoo, Mengshi Lin and Azlin Mustapha

Materials 2021, 14(10), 2489; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14102489 - 12 May 2021

Cited by 13 | Viewed by 2625

Abstract

The application of nanoparticles (NPs) for food safety is increasingly being explored. Zinc oxide (ZnO) and silver (Ag) NPs are inorganic chemicals with antimicrobial and bioactive characteristics and have been widely used in the food industry. However, not much is known about the behavior of these NPs upon ingestion and whether they inhibit natural gut microflora. The objective of this study was to investigate the effects of ZnO and Ag NPs on the intestinal bacteria, namely Escherichia coli, Lactobacillus acidophilus, and Bifidobacterium animalis. Cells were inoculated into tryptic soy broth or Lactobacilli MRS broth containing 1% of NP-free solution, 0, 12, 16, 20 mM of ZnO NPs or 0, 1.8, 2.7, 4.6 mM Ag NPs, and incubated at 37 °C for 24 h. The presence and characterization of the NPs on bacterial cells were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDS). Membrane leakage and cell viability were assessed using a UV-visible spectrophotometer and confocal electron microscope, respectively. Numbers of treated cells were within 1 log CFU/mL less than those of the controls for up to 12 h of incubation. Cellular morphological changes were observed, but many cells remained in normal shapes. Only a small amount of internal cellular contents was leaked due to the NP treatments, and more live than dead cells were observed after exposure to the NPs. Based on these results, we conclude that ZnO and Ag NPs have mild inhibitory effects on intestinal bacteria. Full article

(This article belongs to the Special Issue Silver Nanoparticles: Design, Synthesis, and Applications)

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Review

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43 pages, 5246 KiB

Open AccessReview

Synthesis, Characterization and Biomedical Application of Silver Nanoparticles

by Ashwini Naganthran, Gayathiri Verasoundarapandian, Farah Eryssa Khalid, Mas Jaffri Masarudin, Azham Zulkharnain, Norazah Mohammad Nawawi, Murni Karim, Che Azurahanim Che Abdullah and Siti Aqlima Ahmad

Materials 2022, 15(2), 427; https://0-doi-org.brum.beds.ac.uk/10.3390/ma15020427 - 06 Jan 2022

Cited by 82 | Viewed by 8246

Abstract

Silver nanoparticles (AgNPs) have been employed in various fields of biotechnology due to their proven properties as an antibacterial, antiviral and antifungal agent. AgNPs are generally synthesized through chemical, physical and biological approaches involving a myriad of methods. As each approach confers unique advantages and challenges, a trends analysis of literature for the AgNPs synthesis using different types of synthesis were also reviewed through a bibliometric approach. A sum of 10,278 publications were analyzed on the annual numbers of publication relating to AgNPs and biological, chemical or physical synthesis from 2010 to 2020 using Microsoft Excel applied to the Scopus publication database. Furthermore, another bibliometric clustering and mapping software were used to study the occurrences of author keywords on the biomedical applications of biosynthesized AgNPs and a total collection of 224 documents were found, sourced from articles, reviews, book chapters, conference papers and reviews. AgNPs provides an excellent, dependable, and effective solution for seven major concerns: as antibacterial, antiviral, anticancer, bone healing, bone cement, dental applications and wound healing. In recent years, AgNPs have been employed in biomedical sector due to their antibacterial, antiviral and anticancer properties. This review discussed on the types of synthesis, how AgNPs are characterized and their applications in biomedical field. Full article

(This article belongs to the Special Issue Silver Nanoparticles: Design, Synthesis, and Applications)

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