Article
Optics
Piue Ghosh, Varsha Thambi, Ashish Kar, Arup Lal Chakraborty, Saumyakanti Khatua
Summary: The research demonstrates a simple and controllable method for light-induced active tuning of the longitudinal surface plasmon resonance (LSPR) of gold nanorods (AuNRs), achieving a red-shift of LSPR by around 94 nm. It allows selective tuning of specific AuNRs while leaving others unaffected, providing a post-synthesis fine-tuning of LSPR for tailored plasmonic response in various applications.
Review
Biochemistry & Molecular Biology
Yinghao Li, Qingwei Liao, Wei Hou, Lei Qin
Summary: The control of surface plasmon using metal micro-nano structures and metal/material composites can generate novel phenomena such as optical nonlinear enhancement, transmission enhancement, orientation effect, high sensitivity to refractive index, negative refraction, and dynamic regulation of low threshold. These phenomena have significant potential in fields such as nano-photonics, super-resolution imaging, energy, sensor detection, and life science. Silver nanoparticles, with their high sensitivity to refractive index change, convenient synthesis, and controllable shape and size, are commonly used in surface plasmon sensors. This review summarizes the basic concept, fabrication, and applications of silver-based surface plasmon sensors.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
V. Kapustianyk, I. Bolesta, S. Semak, Yu. Eliyashevskyy, U. Mostovoi, O. Kushnir, B. Turko, M. Rudko
Summary: Based on a comparative study of the morphology of silver nanoparticles deposited on a surface of single crystalline NH2(CH3)(2)Al(SO4)(2) x 6H(2)O (DMAAlS) and glass, as well as the absorption spectra of these composites, the impact of the ferroelectric phase transition on the surface plasmon resonance (SPR) was investigated. The observed anomalies in the SPR band parameters were explained by the resonance-type coupling between dipole clusters and free electrons within the silver nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Bo Chu, Yan Li, Yiheng Qin, Taozheng Hu, Facheng Zhong, Fanguang Zeng, Pei Ding, Li Shao, Yinxiao Du, Shuo Tian, Zhuo Chen
Summary: We present a transparent display using a metasurface of silver nanoparticles (Ag NPs) consisting of a transparent substrate and a layer of Ag NPs deposited by a dielectric film. By a simple annealing process, the prepared Ag NPs metasurface shows a deep transmission valley at a wavelength of lambda = 468 nm, enabling transparent display by projecting monochromatic images. Truncated nanospheres formed by deposited Ag NPs exhibit directional scattering properties with a wide angular beamwidth of about 90 degrees, resulting in wide viewing angles and high brightness characteristics of the fabricated displays. The transmission modes can also be controlled by the thickness of the deposited dielectric film to achieve a red-shifted wavelength of lambda = 527 nm. This simple and low-cost approach using traditional thin film deposition and annealing techniques allows for scalable fabrication of transparent displays in large areas.
Article
Chemistry, Multidisciplinary
Hiba Abbas Widatalla, Layla Fathi Yassin, Ayat Ahmed Alrasheid, Shimaa Abdel Rahman Ahmed, Marvit Osman Widdatallah, Sahar Hussein Eltilib, Alaa Abdulmoneim Mohamed
Summary: The use of silver nanoparticles (AgNPs), with their antiviral, antifungal, anti-inflammatory, and anticancer activities, is of great importance in nanomedicine. In this study, AgNPs were synthesized using a nontoxic and ecofriendly method with green tea leaf extract as a reducing agent. The synthesized AgNPs showed antibacterial activity against Staphylococcus aureus and Klebsiella sp., indicating their potential as an antimicrobial agent.
NANOSCALE ADVANCES
(2022)
Article
Biochemistry & Molecular Biology
Amal A. Althubiti, Samar A. Alsudir, Ahmed J. Alfahad, Abdullah A. Alshehri, Abrar A. Bakr, Ali A. Alamer, Rasheed H. Alrasheed, Essam A. Tawfik, Paschalis Alexandridis
Summary: In this study, green silver nanoparticles (green-AgNPs) were synthesized using Jacobaea maritima aqueous leaf extract, which serves as a simple and environmentally-friendly method. The synthesized AgNPs exhibited controlled size and shape, and demonstrated significant antimicrobial and anticancer activities. This green synthesis of AgNPs has potential clinical applications, but further in vivo studies are required to evaluate their safety and efficacy.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Richard Robinson, Virginia Krause, Shan Wang, Shan Yan, Guojun Shang, Justine Gordon, Serena Tycko, Chuan-Jian Zhong
Summary: There is an increasing need to reduce the silver content in silver-based inks or pastes and achieve low-temperature sintering for scalable and low-cost production of printed wearable electronics. This study reports a scalable wet chemical synthesis method for the preparation of bimetallic silver-copper alloy nanoinks with room temperature sintering properties. It is found that the nanoinks can sinter on paper substrates at room temperature.
Article
Chemistry, Physical
Tomas Zikmund, Jiri Bulir, Michal Novotny, Ladislav Fekete, Sergii Chertopalov, Stefan Andrei Irimiciuc, Mariana Klementova, Jarmila Balogova, Jan Lancok
Summary: This study reports on the formation of silver nanoparticles by gas aggregation in a reaction chamber at room temperature. The size distribution of the nanoparticles was analyzed using atomic force microscopy, while their physical shape and optical properties were characterized using scanning and transmission electron microscopy and spectral ellipsometry. The nanoparticles were then incorporated into various materials to study their influence on emission spectra and transmittance at different annealing temperatures.
Article
Chemistry, Multidisciplinary
Badiaa Essghaier, Hedia Hannachi, Rihem Nouir, Filomena Mottola, Lucia Rocco
Summary: Novel silver nanoparticles were synthesized using an extremophile plant extract for the first time, showing a color change from yellow to brown and size ranging from 14.13 to 21.26 nm. They exhibited strong antioxidant and antidiabetic activities, as well as antimicrobial effects on various bacterial mechanisms and inhibitory effects on Candida albicans virulence factor.
Article
Chemistry, Physical
Marcello Condorelli, Lucio Litti, Mario Pulvirenti, Vittorio Scardaci, Moreno Meneghetti, Giuseppe Compagnini
Summary: This study presents a cost-effective, reusable, and high-responsive SPR device based on silver nanoplate paved PMMA cuvettes, which achieve high refractive index sensitivities using nanoplates with plasmon resonances in the near-infrared region. The experimental results align with calculated extinction cross-section using a Boundary Element Method (BEM) approach, demonstrating the effectiveness of the simple optical device for integration and miniaturization.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Mateusz Kasztelan, Anna Studzinska, Grazyna Zofia Zukowska, Barbara Palys
Summary: Graphene oxide-silver nanoparticle nanohybrids were synthesized by reducing silver nitrate and graphene oxide mixture in water with ascorbic acid as the reducing agent. The concentration of ascorbic acid was varied to study its impact on the efficiency of the hybrids for SERS. Conditioned in ammonia or potassium hydroxide solutions, the composites showed different SERS properties. The sample treated with KOH exhibited the best SERS enhancement, which was correlated with the UV-Vis characteristics and surface structure of the composites.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Alexander B. C. Mantilla, Bethany E. Matthews, Yi Gu, Patrick Z. El-Khoury
Summary: Selective interfacial transformations, particularly oxidation reactions, can be achieved using monometallic silver nanoparticles instead of bimetallic nanostructures. The tip-enhanced Raman spectroscopy images of ATP-functionalized Au and Ag nanoparticles show that while dimerization dominates on Au leading to 4,4'-dimercaptoazobenzene, oxidation exclusively leads to 4-nitrothiophenol on Ag nanoparticles. The distinct reaction pathways on Ag vs Au nanostructures are explored.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Nikita B. Leonov, Igor A. Gladskikh, Anton A. Starovoytov
Summary: The effect of the dielectric and chemical properties of the surrounding medium on the extinction spectra of silver island films is investigated. It is found that the shift in the plasmon resonance towards lower energies is determined by the permittivity of the medium and the shape of nanoparticles, and it is accompanied by an increase in the optical density. The shift of the resonance peak in anisotropic media depends on the local permittivity and molecular interactions with the substrate and nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Multidisciplinary
Alexander Al-Zubeidi, Frederic Stein, Charlotte Flatebo, Christoph Rehbock, Seyyed Ali Hosseini Jebeli, Christy F. Landes, Stephan Barcikowski, Stephan Link
Summary: Gold-silver alloy nanoparticles are utilized for various applications, with gold acting as a stabilizer for silver to prevent corrosion and control the release of antimicrobial ions. The kinetics of silver ion leaching from these nanoparticles is characterized by two stages, with a reduction in leaching rate due to alloying with gold and a dependence on silver content. Individual nanoparticles show diverse silver ion leaching yields, with some nanoparticles completely releasing silver while others exhibit arrested leaching. Scalable production methods and kinetic studies provide insights for designing the durability and bioactivity of alloy nanoparticles.
Article
Materials Science, Multidisciplinary
Azeem Ullah, Perveen Fazil, Gul Rukh, Munira Taj Muhammad, Muhammad Rahim, Muhammad Ateeq, Rozina Khattak, Muhammad Sufaid Khan, Ola A. Abu Ali, Dalia Saleh
Summary: In this study, Ferene-S-conjugated silver nanoparticles were synthesized and showed selective quenching effects in the presence of Fe2+, along with substantial selectivity towards Fe2+ in the presence of other competitive ions. The system followed Beer's law over a concentration range of 110-190 nM with a detection limit of 110 nM.
Article
Chemistry, Multidisciplinary
Moustafa Zahran, Maged El-Kemary, Shaden Khalifa, Hesham El-Seedi
GREEN PROCESSING AND SYNTHESIS
(2018)
Article
Materials Science, Multidisciplinary
Eslam Ibrahim El-Aswari, Moustafa Moawad Zahran, Maged El-Kemary
MATERIALS RESEARCH EXPRESS
(2019)
Review
Biochemistry & Molecular Biology
Moustafa Zahran, Amal H. Marei
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2019)
Article
Electrochemistry
Moustafa Zahran, Ziad Khalifa, Magdy A-H Zahran, Magdi Abdel Azzem
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Analytical
Moustafa Zahran, Ziad Khalifa, Magdy A-H Zahran, Magdi Abdel Azzem
Summary: A simple, green, and sensitive electrochemical inhibition sensor based on silver nanoparticles was developed for the determination of chlorpyrifos in natural water, showing promising application potential with accepted recovery values.
MICROCHEMICAL JOURNAL
(2021)
Article
Electrochemistry
Moustafa Zahran, Ziad Khalifa, Magdy A-H Zahran, Magdi Abdel Azzem
Summary: A novel electrochemical amplification sensor using gum Arabic-capped silver nanoparticles was developed for detecting methylene blue, with linear detection ranges for AgNPs, MB monomer, and poly MB oxidation. The sensor was successfully applied for MB detection in river water samples, showing acceptable recovery values. The interaction between AgNPs and MB mediators in oxidation signal amplification was reported for the first time.
ELECTROCHIMICA ACTA
(2021)
Review
Engineering, Chemical
Ahmed M. Elgarahy, Ali Maged, M. G. Eloffy, Moustafa Zahran, Sherif Kharbish, Khalid Z. Elwakeel, Amit Bhatnagar
Summary: In recent decades, polymers have been widely used in various sectors due to their exceptional properties. However, the presence of non-degradable polymers and industrial effluents in the environment has become a serious global issue. Geopolymers, derived from natural resources, have emerged as promising alternatives to synthetic polymers. This review comprehensively discusses the synthesis and characterization of geopolymers/composites, as well as their application in various wastewater treatment technologies. The potential of applying circular economy principles in the wastewater management sector is also highlighted.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Moustafa Zahran, Amr Mohamed Beltagi, Mahmoud Rabie, Reham Maher, Abla Ahmed Hathoot, Magdi Abdel Azzem
Summary: An electrochemical sensor based on silver nanoparticles (AgNPs) has been developed for assessing bromocresol green (BG) in river water. AgNPs were synthesized using the aqueous extract of Ficus sycomorus leaves and then modified onto a glassy carbon electrode. The AgNPs were characterized using various techniques and were found to increase in size after adsorption. The developed sensor showed a linear range for BG detection and low detection limits for both monomer and polymer oxidation.
ROYAL SOCIETY OPEN SCIENCE
(2023)
Review
Materials Science, Multidisciplinary
Moustafa Zahran
Summary: Carbohydrate polymers are promising materials for medical and industrial applications due to their availability, non-toxicity, biocompatibility, and biodegradability. They can be reinforced with metal and metal oxide nanoparticles to enhance the conductivity and catalytic activity of electrochemical sensors. The combination of carbohydrate polymers and nanoparticles results in nanocomposites that stabilize the nanoparticles and improve the performance of electrochemical sensors.
MATERIALS ADVANCES
(2024)
Review
Chemistry, Multidisciplinary
Moustafa Zahran, Rehan M. El-Shabasy, Alyaa Elrashedy, Walid Mousa, Mohamed Nayel, Akram Salama, Ahmed Zaghawa, Ahmed Elsify
Summary: Bovine tuberculosis is a worldwide infectious zoonotic disease caused by Mycobacterium bovis. Genotyping techniques are used to identify and differentiate the disease. Rapid and accurate diagnosis is crucial for monitoring and controlling the disease. Nanotechnology shows potential in rapid diagnosis and treatment of tuberculosis.
Review
Materials Science, Multidisciplinary
Moustafa Zahran, Ziad Khalifa, Magdy A. -H. Zahran, Magdi Abdel Azzem
Summary: This review highlights silver nanoparticles (AgNPs) as promising electrochemical probes studied for detecting organic pollutants, emphasizing their role in modifying electrode surfaces for efficient detection. AgNP-based electrochemical sensors are considered a promising tool for determining various organic pollutants in water.
MATERIALS ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Ziad Khalifa, Moustafa Zahran, Magdy A-H Zahran, Magdi Abdel Azzem
Article
Engineering, Chemical
Eslam Ibrahim El-Aswar, Seleem El-Sayed Gaber, Moustafa Moawad Zahran, Abdelaleem Hassan Abdelaleem
DESALINATION AND WATER TREATMENT
(2020)
Article
Nanoscience & Nanotechnology
Moustafa Zahran, Ziad Khalifa, Magdy A-H Zahran, Magdi Abdel Azzem
ACS APPLIED NANO MATERIALS
(2020)
