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Journal articles on the topic 'Gold-silver hybrid nanoparticles'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Suvarli, Narmin, Max Frentzel, Jürgen Hubbuch, Iris Perner-Nochta, and Michael Wörner. "Synthesis of Spherical Nanoparticle Hybrids via Aerosol Thiol-Ene Photopolymerization and Their Bioconjugation." Nanomaterials 12, no. 3 (2022): 577. http://dx.doi.org/10.3390/nano12030577.

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Hybrid nanomaterials possess the properties of both organic and inorganic components and find applications in various fields of research and technology. In this study, aerosol photopolymerization is used in combination with thiol-ene chemistry to produce silver poly(thio-ether) hybrid nanospheres. In aerosol photopolymerization, a spray solution of monomers is atomized, forming a droplet aerosol, which then polymerizes, producing spherical polymer nanoparticles. To produce silver poly(thio-ether) hybrids, silver nanoparticles were introduced to the spray solution. Diverse methods of stabilizat

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Girhova E.I., Mikitchuk A.P., Belonovskii A.V., and Morozov K.M. "A hybrid metal polymer based on polymethyl methacrylate with embedded metal nanoparticles." Semiconductors 56, no. 7 (2022): 458. http://dx.doi.org/10.21883/sc.2022.07.54642.05.

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A study was made of a hybrid metal-polymer material consisting of polymethyl methacrylate (PMMA) and nanoparticles distributed throughout its volume, silver, gold, copper or aluminum. The effective permittivity and absorption cross section are calculated, and the processes of temperature relaxation are modeled. It has been shown that mixtures of PMMA with silver, copper, aluminum, or gold nanoparticles can be used as an active medium in optoacoustic ultrasound generators. Keywords: hybrid material, ultrasound generator, nanoparticle, polymethyl methacrylat.

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Anca Lascu, Anca Lascu, Anca Palade Anca Palade, and Mihaela Birdeanu and Eugenia Fagadar Cosma Mihaela Birdeanu and Eugenia Fagadar Cosma. "Procaine Detection Using Hybrids of Cobalt-Metalloporphyrin with Gold and Silver Nanoparticles." Journal of the chemical society of pakistan 41, no. 1 (2019): 43. http://dx.doi.org/10.52568/000725/jcsp/41.01.2019.

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Two organic-inorganic nanomaterials derived from Co(II)-tetra(3-hydroxyphenyl)porphyrin (Co-3OHPP) and noble metal nanoparticles, namely: Co-porphyrin-nanoAu (Co-3OHPP/nAu) and Co-porphyrin-nanoAg (Co-3OHPP/nAg) were obtained and tested for their capacity to detect procaine. Both hybrids present changes in UV-vis spectroscopy after interaction with procaine, in the same range of procaine concentration. The silver colloid is more easily obtainable and more economically affordable and its hybrid has a wider range of procaine detection from 5.39 x 10-5 mol l-1 to 28.04 x 10-5 mol l-1 concentratio

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Capek, Ignác. "Noble Metal Nanoparticles and Their (Bio) Conjugates. II. Preparation." International Journal of Chemistry 8, no. 1 (2016): 86. http://dx.doi.org/10.5539/ijc.v8n1p86.

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Hybrid nanoparticles of gold and silver can not only retain the beneficial features of both nanomaterials, but also possess unique advantages (synergism) over the other two types. Novel pseudospherical and anisotropic nanoparticles, bimetallic triangular nanoparticles, and core@shell nanoparticles were prepared by the different procedures for various applications and understanding both the particle evolution (nucleation) and nanoparticle anisotropy. Hybrid nanoparticles of gold and silver are considered to be low in toxicity, and exhibit facile surface functionalization chemistry. Furthermore,

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5

Gomez-Cruz, Juan, Yazan Bdour, Kevin Stamplecoskie, and Carlos Escobedo. "FDTD Analysis of Hotspot-Enabling Hybrid Nanohole-Nanoparticle Structures for SERS Detection." Biosensors 12, no. 2 (2022): 128. http://dx.doi.org/10.3390/bios12020128.

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Metallic nanoparticles (MNPs) and metallic nanostructures are both commonly used, independently, as SERS substrates due to their enhanced plasmonic activity. In this work, we introduce and investigate a hybrid nanostructure with strong SERS activity that benefits from the collective plasmonic response of the combination of MNPs and flow-through nanohole arrays (NHAs). The electric field distribution and electromagnetic enhancement factor of hybrid structures composed of silver NPs on both silver and gold NHAs are investigated via finite-difference time-domain (FDTD) analyses. This computationa

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Bhatia, Eshant, and Rinti Banerjee. "Hybrid silver–gold nanoparticles suppress drug resistant polymicrobial biofilm formation and intracellular infection." Journal of Materials Chemistry B 8, no. 22 (2020): 4890–98. http://dx.doi.org/10.1039/d0tb00158a.

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7

Huang, Peng-Yang, Chih-Wei Chiu, Chen-Yang Huang, et al. "Facile Fabrication of Flexible Electrodes and Immobilization of Silver Nanoparticles on Nanoscale Silicate Platelets to Form Highly Conductive Nanohybrid Films for Wearable Electronic Devices." Nanomaterials 10, no. 1 (2019): 65. http://dx.doi.org/10.3390/nano10010065.

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This study investigated films with remarkably high electrical conductivity after they were easily prepared from organic/inorganic nanohybrid solutions containing an organic polymeric dispersant and two-dimensional nanoscale silicate platelets as the inorganic stabilizer dispersed with silver nanoparticles. Transmission electron microscopy shows that the production of silver nanoparticles synthesized by the in situ chemical reduction of AgNO3 in an aqueous solution by N,N-dimethylformamide results in an average silver nanoparticle diameter of circa 20 nm. Thin films of silver nanoparticles were

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Гиршова, Е. И., Е. П. Микитчук, А. В. Белоновский та К. М. Морозов. "Гибридный металлополимер на основе полиметилметакрилата с внедренными металлическими наночастицами как активная среда оптоакустического генератора ультразвука". Физика и техника полупроводников 56, № 7 (2022): 630. http://dx.doi.org/10.21883/ftp.2022.07.52750.05.

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A study was made of a hybrid metal-polymer material consisting of polymethyl methacrylate (PMMA) and nanoparticles distributed throughout its volume, silver, gold, copper or aluminum. The effective permittivity and absorption cross section are calculated, and the processes of temperature relaxation are modeled. It has been shown that mixtures of PMMA with silver, copper, aluminum, or gold nanoparticles can be used as an active medium in optoacoustic ultrasound generators.

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9

Thompson, Shelby, Mychele Jorns, and Dimitri Pappas. "Synthesis and Characterization of Dye-Doped Au@SiO₂ Core-Shell Nanoparticles for Super-Resolution Fluorescence Microscopy." Applied Spectroscopy 76, no. 11 (2022): 1367–74. http://dx.doi.org/10.1177/00037028221121357.

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Dye-doped nanoparticles have been investigated as bright, fluorescent probes for localization-based super-resolution microscopy. Nanoparticle size is important in super-resolution microscopy to get an accurate size of the object of interest from image analysis. Due to their self-blinking behavior and metal-enhanced fluorescence (MEF), Ag@SiO2 and Au@Ag@SiO2 nanoparticles have shown promise as probes for localization-based super-resolution microscopy. Here, several noble metal-based dye-doped core-shell nanoparticles have been investigated as self-blinking nanomaterial probes. It was observed t

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10

Paul, Samir C., and Vince Cammarata. "Silver and Gold Nanoparticles Functionalized with Naphthalene Diimide." Advanced Science, Engineering and Medicine 12, no. 2 (2020): 190–97. http://dx.doi.org/10.1166/asem.2020.2487.

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Functionalization of metal nanoparticles with surface ligands effects their growth, shape and size as well as the optical and electronic properties. The change of optical property of the nanoparticles due to their surface ligand is an important field of nanoparticles application. Here we repot functionalization and characterization of metal nanoparticles with redox active naphthalene diimide (NDI). Silver neodecanoate and gold (I) sodium thiosulfate were used to synthesize silver and gold nanoparticles respectively, in presence of DPA-NDI-SH (where DPA = diphenylamine) in a single reaction ves

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Siddiq, A. Mohammed, Ramar Thangam, Balaraman Madhan, and Md Sayem Alam. "Counterion coupled (COCO) gemini surfactant capped Ag/Au alloy and core–shell nanoparticles for cancer therapy." RSC Advances 9, no. 65 (2019): 37830–45. http://dx.doi.org/10.1039/c9ra06494j.

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In this work hybrid silver (Ag)–gold (Au) nanoparticles (NPs) with different sizes and compositions were synthesized and applied for anticancer evaluations and which is effectively involved in cancer cell apoptosis through DNA damage.

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Thirunanasambantham, Kannigah, Zuhaila Ismail, Yeou Jiann Lim, Amnani Shamjuddin, and Yahaya Shagaiya Daniel. "Computational Simulation of MHD Blood-Based Hybrid Nanofluid Flow Through a Stenosed Artery." Journal of Advanced Research in Numerical Heat Transfer 28, no. 1 (2024): 145–64. https://doi.org/10.37934/arnht.28.1.145164.

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As the leading cause of death worldwide, cardiovascular disease underscores the urgent need for effective therapies and diagnostic tools. The use of magnetic fields and nanoparticles has demonstrated potential for creating cutting-edge treatments. To analyse blood flow in an artery with stenosis and the impact of an external magnetic field on blood flow infused with hybrid nanoparticles, this study is conducted. A generalised power law is used to model the flow of a hybrid blood nanofluid comprising silver (Ag) and gold (Au) nanoparticles. This study focuses on a deeper level of the magnetic f

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Yang, Qingsong, Li Li, Fang Zhao, et al. "Spherical Polyelectrolyte Brushes as Templates to Prepare Hollow Silica Spheres Encapsulating Metal Nanoparticles." Nanomaterials 10, no. 4 (2020): 799. http://dx.doi.org/10.3390/nano10040799.

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Integrating hollow silica spheres with metal nanoparticles to fabricate multifunctional hybrid materials has attracted increasing attention in catalysis, detection, and drug delivery. Here, we report a simple and general method to prepare hollow silica spheres encapsulating silver nanoparticles (Ag@SiO2) based on spherical polyelectrolyte brushes (SPB), which consist of a polystyrene core and densely grafted poly (acrylic acid) (PAA) chains. SPB were firstly used as nanoreactors to generate silver nanoparticles in situ and then used as sacrificial templates to prepare hybrid hollow silica sphe

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14

Hoffmann, Marisa, Daniel Schletz, Anja Maria Steiner, Daniel Wolf, Martin Mayer, and Andreas Fery. "Conjugated Polymer–Gold–Silver Hybrid Nanoparticles for Plasmonic Energy Focusing." Journal of Physical Chemistry C 126, no. 5 (2022): 2475–81. http://dx.doi.org/10.1021/acs.jpcc.1c08583.

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15

Boujakhrout, Abderrahmane, Paula Díez, Paloma Martínez-Ruíz, et al. "Gold nanoparticles/silver-bipyridine hybrid nanobelts with tuned peroxidase-like activity." RSC Advances 6, no. 78 (2016): 74957–60. http://dx.doi.org/10.1039/c6ra12972b.

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16

Nicolucci, Patricia, Guilherme Gambaro, Kyssylla Monnyelle Araujo Silva, Iara Souza Lima, Oswaldo Baffa, and Alberto Pasquarelli. "XMEA: A New Hybrid Diamond Multielectrode Array for the In Situ Assessment of the Radiation Dose Enhancement by Nanoparticles." Sensors 24, no. 8 (2024): 2409. http://dx.doi.org/10.3390/s24082409.

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This work presents a novel multielectrode array (MEA) to quantitatively assess the dose enhancement factor (DEF) produced in a medium by embedded nanoparticles. The MEA has 16 nanocrystalline diamond electrodes (in a cell-culture well), and a single-crystal diamond divided into four quadrants for X-ray dosimetry. DEF was assessed in water solutions with up to a 1000 µg/mL concentration of silver, platinum, and gold nanoparticles. The X-ray detectors showed a linear response to radiation dose (r2 ≥ 0.9999). Overall, platinum and gold nanoparticles produced a dose enhancement in the medium (maxi

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17

Sorescu, Ana-Alexandra, Alexandrina Nuţă, Rodica-Mariana Ion, Ioana-Raluca Şuică-Bunghez, and Cristina Lavinia Nistor. "Hybrid Nanoaggregates from Plant-Based Noble Metallic Nanoparticles and Functionalized Macrocyclic Derivatives." Proceedings 41, no. 1 (2019): 71. http://dx.doi.org/10.3390/ecsoc-23-06653.

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Noble metallic nanoparticles, silver (AgNPs) and gold (AuNPs) mainly, exhibit good antimicrobial, antibacterial, and antifungal properties and, therefore, have a significant contribution to the constant growing field of nanomedicine. They can be synthesized using both conventional or unconventional methods and, in the last decades especially, the unconventional routes that use plants as raw vegetal materials are studied with proven results. On the other hand, macrocyclic derivatives such as phthalocyanines (Pcs) have photoactive properties and numerous applications. The conjugation between sil

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18

Bigall, Nadja C., and Alexander Eychmüller. "Synthesis of noble metal nanoparticles and their non-ordered superstructures." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368, no. 1915 (2010): 1385–404. http://dx.doi.org/10.1098/rsta.2009.0274.

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This article highlights our recent work concerning the synthesis of metal nanoparticles and their non-ordered superstructures. After a short introduction, the basic synthetic procedures are explained for the nanoparticles used for the assemblies. Furthermore, a fabrication method is itemized for very monodisperse platinum nanoparticles in aqueous solution ranging in diameter from 10 to 100 nm showing distinct optical properties. The next section deals with the synthesis of non-ordered hydro- and aerogels from the as-prepared sols. Very light large surface materials from gold, silver, platinum

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Tripathi, Jayati, Buddakkagari Vasu, Osman Anwar Bég, and Rama Subba Reddy Gorla. "Unsteady hybrid nanoparticle-mediated magneto-hemodynamics and heat transfer through an overlapped stenotic artery: Biomedical drug delivery simulation." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 235, no. 10 (2021): 1175–96. http://dx.doi.org/10.1177/09544119211026095.

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Two-dimensional laminar hemodynamics through a diseased artery featuring an overlapped stenosis was simulated theoretically and computationally. This study presented a mathematical model for the unsteady blood flow with hybrid biocompatible nanoparticles (Silver and Gold) inspired by drug delivery applications. A modified Tiwari-Das volume fraction model was adopted for nanoscale effects. Motivated by the magneto-hemodynamics effects, a uniform magnetic field was applied in the radial direction to the blood flow. For realistic blood behavior, Reynolds’ viscosity model was applied in the formul

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20

Carapeto, A. P., A. M. Ferraria, P. A. Carvalho, P. Brogueira, S. Boufi, and A. M. Botelho do Rego. "Hybrid systems of gold and silver nanoparticles generated on cellulose surfaces." Microscopy and Microanalysis 19, S4 (2013): 119–20. http://dx.doi.org/10.1017/s1431927613001219.

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Developing methods for immobilizing metallic nanoparticles (NP) onto different surfaces is a subject of fundamental interest, as nanometric structures enable the appearance of novel properties, absent in bulk or even in micrometric dimensions. In fact, the presence of NP with different size and shape on surfaces can induce substantial modifications on their electronic, optical, magnetic, physical or chemical proprieties. This will be very useful for many applications in different areas ranging from electronics to biomedicine.In this work, we use a simple, reproducible and economic method to gr

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21

Yu, Wei, Nikunjkumar Visaveliya, Christophe A. Serra, et al. "Preparation and Deep Characterization of Composite/Hybrid Multi-Scale and Multi-Domain Polymeric Microparticles." Materials 12, no. 23 (2019): 3921. http://dx.doi.org/10.3390/ma12233921.

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Polymeric microparticles were produced following a three-step procedure involving (i) the production of an aqueous nanoemulsion of tri and monofunctional acrylate-based monomers droplets by an elongational-flow microemulsifier, (ii) the production of a nanosuspension upon the continuous-flow UV-initiated miniemulsion polymerization of the above nanoemulsion and (iii) the production of core-shell polymeric microparticles by means of a microfluidic capillaries-based double droplets generator; the core phase was composed of the above nanosuspension admixed with a water-soluble monomer and gold sa

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22

Hamid, Siti Nor Asimah, Kannigah Thirunanasambantham, Zuhaila Ismail, and Lim Yeou Jiann. "Numerical Simulation of Heat Transfer in MHD Hybrid Blood Nanofluid Flow through a Bifurcated Stenosed Artery." Defect and Diffusion Forum 440 (March 14, 2025): 39–45. https://doi.org/10.4028/p-qs5rje.

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Atherosclerosis occurs due to plaque thickening in arteries, reducing blood flow and oxygen supply to tissues. This study models blood flow in a bifurcated stenosed artery under a uniform magnetic field, analyzing magnetohydrodynamics (MHD) hybrid blood nanofluid flow with heat transfer. Using COMSOL Multiphysics, the laminar and Newtonian flow of a hybrid blood nanofluid with silver (Ag) and gold (Au) nanoparticles is simulated. Results, validated by existing literature, highlight key parameters such as velocity, heat flux, and wall shear stress (WSS). The study shows that Ag and Au nanoparti

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Trandabat, Alexandru F., Oliver Daniel Schreiner, Thomas Gabriel Schreiner, Olga Plopa, and Romeo Cristian Ciobanu. "Study on Hybrid Assemblies of Graphene and Conducting Polymers with Embedded Gold Nanoparticles for Potential Electrode Purposes." Chemosensors 13, no. 4 (2025): 130. https://doi.org/10.3390/chemosensors13040130.

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This article outlines the method of creating electrodes for electrochemical sensors using hybrid nanostructures composed of graphene and conducting polymers with insertion of gold nanoparticles. The technology employed for graphene dispersion and support stabilization was based on the chemical vapor deposition technique followed by electrochemical delamination. The method used to obtain hybrid nanostructures from graphene and conductive polymers was drop-casting, utilizing solutions of P3HT, PANI-EB, and F8T2. Additionally, the insertion of gold nanoparticles utilized an innovative dip-coating

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Zainab Shaheed Kadhim and Haider Y. Hammod. "Evaluation of Anti-Cancer Activity of Silver@Gold Nanoparticles by Hybrid Technique." Iraqi Journal of Laser 23, no. 2 (2024): 76–84. https://doi.org/10.31900/ijl.v23i2.478.

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This research deals with the evaluation of the anti-cancer activity of Ag@Au NPs synthesis by a hybrid system combining laser and plasma jet techniques. The effect of NPs on inhibiting the growth of breast cancer cells and normal cell lines was studied. Firstly, silver nanoparticles were prepared using a Nd:YAG laser with a wavelength of 1064 nm, a frequency of 6 Hz, an energy of 1000 mJ, and a number of pulses of 558. In the second step, we take different ratios between Ag NPs and gold salts as follows: (1:9, 2:8, and 3:7), respectively, and exposed to a plasma jet system for 3 minutes. The N

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Kumar, Harsh, Kanchan Bhardwaj, Kamil Kuča, et al. "Flower-Based Green Synthesis of Metallic Nanoparticles: Applications beyond Fragrance." Nanomaterials 10, no. 4 (2020): 766. http://dx.doi.org/10.3390/nano10040766.

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Green synthesis has gained wide attention as a sustainable, reliable, and eco-friendly approach to the synthesis of a variety of nanomaterials, including hybrid materials, metal/metal oxide nanoparticles, and bioinspired materials. Plant flowers contain diverse secondary compounds, including pigments, volatile substances contributing to fragrance, and other phenolics that have a profound ethnobotanical relevance, particularly in relation to the curing of diseases by ‘Pushpa Ayurveda’ or floral therapy. These compounds can be utilized as potent reducing agents for the synthesis of a variety of

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Lozano Chamizo, Laura, Yurena Luengo Morato, Karina Ovejero Paredes, Rafael Contreras Caceres, Marco Filice, and Marzia Marciello. "Ionotropic Gelation-Based Synthesis of Chitosan-Metal Hybrid Nanoparticles Showing Combined Antimicrobial and Tissue Regenerative Activities." Polymers 13, no. 22 (2021): 3910. http://dx.doi.org/10.3390/polym13223910.

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The treatment of skin wounds poses significant clinical challenges, including the risk of bacterial infection. In particular due to its antimicrobial and tissue regeneration abilities chitosan (a polymeric biomaterial obtained by the deacetylation of chitin) has received extensive attention for its effectiveness in promoting skin wound repair. On the other hand, due to their intrinsic characteristics, metal nanoparticles (e.g., silver (Ag), gold (Au) or iron oxide (Fe3O4)) have demonstrated therapeutic properties potentially useful in the field of skin care. Therefore, the combination of these

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Jurado, Rocío, and Natividad Gálvez. "Apoferritin Amyloid-Fibril Directed the In Situ Assembly and/or Synthesis of Optical and Magnetic Nanoparticles." Nanomaterials 11, no. 1 (2021): 146. http://dx.doi.org/10.3390/nano11010146.

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The coupling of proteins that can assemble, recognise or mineralise specific inorganic species is a promising strategy for the synthesis of nanoscale materials with a controllable morphology and functionality. Herein, we report that apoferritin protein amyloid fibrils (APO) have the ability to assemble and/or synthesise various metal and metal compound nanoparticles (NPs). As such, we prepared metal NP–protein hybrid bioconjugates with improved optical and magnetic properties by coupling diverse gold (AuNPs) and magnetic iron oxide nanoparticles (MNPs) to apoferritin amyloid fibrils and compar

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Jurado, Rocío, and Natividad Gálvez. "Apoferritin Amyloid-Fibril Directed the In Situ Assembly and/or Synthesis of Optical and Magnetic Nanoparticles." Nanomaterials 11, no. 1 (2021): 146. http://dx.doi.org/10.3390/nano11010146.

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The coupling of proteins that can assemble, recognise or mineralise specific inorganic species is a promising strategy for the synthesis of nanoscale materials with a controllable morphology and functionality. Herein, we report that apoferritin protein amyloid fibrils (APO) have the ability to assemble and/or synthesise various metal and metal compound nanoparticles (NPs). As such, we prepared metal NP–protein hybrid bioconjugates with improved optical and magnetic properties by coupling diverse gold (AuNPs) and magnetic iron oxide nanoparticles (MNPs) to apoferritin amyloid fibrils and compar

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Barbillon, Grégory. "Fabrication and SERS Performances of Metal/Si and Metal/ZnO Nanosensors: A Review." Coatings 9, no. 2 (2019): 86. http://dx.doi.org/10.3390/coatings9020086.

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Surface-enhanced Raman scattering (SERS) sensors are very powerful analytical tools for the highly sensitive detection of chemical and biological molecules. Substantial efforts have been devoted to the design of a great number of hybrid SERS substrates such as silicon or zinc oxide nanosystems coated with gold/silver nanoparticles. By comparison with the SERS sensors based on Au and Ag nanoparticles/nanostructures, higher enhancement factors and excellent reproducibilities are achieved with hybrid SERS nanosensors. This enhancement can be due to the appearance of hotspots located at the interf

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Du, Ting, Jinyu Zhang, Chunqiao Li, et al. "Gold/Silver Hybrid Nanoparticles with Enduring Inhibition of Coronavirus Multiplication through Multisite Mechanisms." Bioconjugate Chemistry 31, no. 11 (2020): 2553–63. http://dx.doi.org/10.1021/acs.bioconjchem.0c00506.

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Rajamanikandan, Ramar, Kandasamy Sasikumar та Heongkyu Ju. "β-Cyclodextrin Functionalized Au@Ag Core-Shell Nanoparticles: Plasmonic Sensors for Cysteamine and Efficient Nanocatalysts for Nitrobenzene-to-Aniline Conversion". Biosensors 14, № 11 (2024): 544. http://dx.doi.org/10.3390/bios14110544.

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We reported the gold/silver core-shell nanoparticles (Aucore@Agshell NPs) functionalized with β-cyclodextrin (β-CD) as versatile nano-agents demonstrated for human urine-based biosensing of cysteamine and catalytic conversion from nitrobenzene (NB) to aniline. First, the hybrid bimetallic nanoparticles, i.e., β-CD-Aucore@Agshell NPs, constituted a colorimetric sensing platform based on localized surface plasmons, enabling cysteamine (Cyst) to be detected in a remarkably rapid manner, i.e., within 2 min, which was greatly shortened in comparison with that of our previous report. This was due la

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Cho, Eun Chul, Ju A. La, Sora Lim, and Ji Eun Song. "Gold/Silver-Polymer Hybrid Nanostructures as Thermoreversible Optical Sensors and Probes for the Quantification Radical Compounds." MRS Proceedings 1802 (2015): 41–44. http://dx.doi.org/10.1557/opl.2015.833.

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ABSTRACTWe present gold (Au) and silver (Ag) nanoparticles (NPs) could be used not only for stimuli-responsive optical sensors but also for the quantification of radical compounds when these nanoparticles are suitably combined with polymeric materials. When Au NPs are assembled 2-dimensionally on the surface of hydrogel NPs which respond to temperatures, the hybrid NPs displayed thermoreversible multiple color switching. Accordingly, optical bandwidths of the hybrid NPs are reversibly changed with temperatures: with hybrid NPs assembled with 51 nm Au NPs, prominent optical signals are recorded

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Kavitha, P., C. Shanthi, and R. Kannan. "Synthesis and applications of metal nanoparticles (Au, Ag)@C-graphene oxide and carbon nanotubes hybrid nanoarchitectures." Digest Journal of Nanomaterials and Biostructures 19, no. 2 (2024): 845–55. http://dx.doi.org/10.15251/djnb.2024.192.845.

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In this work, we made an effort to use dopamine hydrochloride and the solid state method to anchor the gold and silver metallic nanoparticles over the graphene oxide-carbon nanotubes to improve the metal nanoparticles' interaction with the support materials. Because the hybrid nanoarchitectures of graphene-CNT provide enhanced electron transfer ability, which facilitates the catalytic activity more quickly and enhances the rate. Additionally, carbon nanotubes–graphene oxide-metal nanoparticles based hybrid catalyst was developed in a similar fashion. The formation of metallic nanoparticles in

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Grevtseva, Irina G., Tamara A. Chevychelova, Violetta N. Derepko, et al. "Spectral manifestations of the exciton-plasmon interaction of Ag2S quantum dots with silver and gold nanoparticles." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 23, no. 1 (2021): 25–31. http://dx.doi.org/10.17308/kcmf.2021.23/3294.

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The purpose of our study was to develop methods for creating hybrid nanostructures based on colloidal Ag2S quantum dots, pyramidal silver nanoparticles, Au nanorods, and to determine the spectral-luminescent manifestations of exciton-plasmon interactions in these structures. The objects of the study were Ag2S quantum dots passivated with thioglycolic acid (Ag2S/TGA QDs) and 2-mercaptopropionic acid (Ag2S/2-MPA QDs), gold nanorods (Au NRs), silver nanoparticles with pyramidal geometry (Ag NPs), and their mixtures. The spectral properties were studied using a USB2000+ with a PMC-100-20 photomult

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Hoa, Huynh Tran My. "SYNTHESIS AND APPLICATION OF GRAPHENE/SILVER NANOWIRES/GOLD NANOPARTICLES HYBRID FOR AMMONIA GAS SENSING." Vietnam Journal of Science and Technology 54, no. 1A (2018): 175. http://dx.doi.org/10.15625/2525-2518/54/1a/11823.

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Graphene material synthesized from chemical method (reduced Graphene Oxide – rGO) is a promising candidate for gas sensors due to their unique properties. With structure of single layer of bonded sp2 carbons in a two-dimensional (2D) lattice, rGO have large surface to volume ratio, high conductivity and electron mobility at room temperature. Meanwhile, the different oxygen-containing functional groups (contain dangling bonds) decorated on carbon networks make rGO easily respond with compatible gas molecules. However, the investigating of structure of rGO in micrometer scale shows that the chem

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Shah, Luqman Ali, Murtaza Sayed, and Mohammad Siddiq. "Fabrication of Ag and Au nanoparticles in cross-linked polymer microgels for their comparative catalytic study." Materials Science-Poland 35, no. 3 (2017): 651–59. http://dx.doi.org/10.1515/msp-2017-0073.

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AbstractThree dimensional cross-linked polymer microgels with temperature responsive N-isopropyl acrylamide (NIPAM) and pH sensitive methacrylic acid (MAA) were successfully synthesized by free radical emulsion polymerization with different amounts of MAA. Silver and gold nanoparticles with the size of 6.5 nm and 3.5 nm (±0.5 nm), respectively were homogeneously reduced inside these materials by chemical reduction method at pH 2.78 and 8.36 for the preparation of hybrid materials. The samples were characterized by FT-IR, DLS and TEM techniques. The catalytic activity of the hybrid materials wa

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Feliu, N., D. Docter, M. Heine, et al. "In vivo degeneration and the fate of inorganic nanoparticles." Chemical Society Reviews 45, no. 9 (2016): 2440–57. https://doi.org/10.1039/c5cs00699f.

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What happens to inorganic nanoparticles (NPs), such as plasmonic gold or silver, superparamagnetic iron oxide, or fluorescent quantum dot NPs after they have been administrated to a living being? This review discusses the integrity, biodistribution, and fate of NPs after in vivo administration. The hybrid nature of the NPs is described, conceptually divided into the inorganic core, the engineered surface coating comprising of the ligand shell and optionally also bio-conjugates, and the corona of adsorbed biological molecules. Empirical evidence shows that all of these three compounds may degra

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Rani, Kirti. "Nanobiomaterial: Hybrid Gold and Silver Nanoparticles (AuNPs and AgNPs) as Non-viral Gene Delivery Vehicles." Journal of Advances in Biology & Biotechnology 8, no. 3 (2016): 1–7. http://dx.doi.org/10.9734/jabb/2016/27734.

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Vysotsky, V. V., A. S. Dmitriev, I. A. Mikhailova, K. F. Chernyshova, O. V. Souvorova, and A. A. Revina. "Graphene nanofl akes and hybrid nanocomposites with gold and silver nanoparticles: optical and thermal properties." Russian Chemical Bulletin 69, no. 1 (2020): 32–42. http://dx.doi.org/10.1007/s11172-020-2720-z.

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Tkachenko, Anton, Pavlo Virych, Valeriy Myasoyedov, et al. "Cytotoxicity of Hybrid Noble Metal-Polymer Composites." BioMed Research International 2022 (October 11, 2022): 1–12. http://dx.doi.org/10.1155/2022/1487024.

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The aim of the present research was to assess the cytotoxicity of gold and silver nanoparticles synthesized into dextran-graft-polyacrylamide (D-PAA) polymer nanocarrier, which were used as a basis for further preparation of multicomponent nanocomposites revealed high efficacy for antitumor therapy. The evaluation of the influence of Me-polymer systems on the viability and metabolic activity of fibroblasts and eryptosis elucidating the mechanisms of the proeryptotic effects has been done in the current research. The nanocomposites investigated in this study did not reduce the survival of fibro

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Schreiner, Oliver Daniel, Alexandru F. Trandabat, Romeo Cristian Ciobanu, and Thomas Gabriel Schreiner. "TiO2 Ceramic Nanotubes—Conducting Polymer Assemblies with Embedded Gold Particles for Potential Use as Chemosensors in the Detection of Oral Diseases." Chemosensors 13, no. 4 (2025): 117. https://doi.org/10.3390/chemosensors13040117.

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Our research outlines a method for creating chemosensors utilizing hybrid nanostructures derived from TiO2 ceramic nanotubes alongside conducting polymers, with embedded gold nanoparticles. The method used to create hybrid nanostructures from ceramic nanotubes and conducting polymers was drop-casting. AFM analysis highlighted an increased roughness, particularly for PANI-EB, exhibiting a significantly larger grain size exceeding 3.5 μm, with an increased inclusion of gold and uniform arrangement on the surface. The Rku parameter values being around three suggested that the layers primarily exh

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Dăscălescu, Dorin, and Constantin Apetrei. "Nanomaterials Based Electrochemical Sensors for Serotonin Detection: A Review." Chemosensors 9, no. 1 (2021): 14. http://dx.doi.org/10.3390/chemosensors9010014.

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The present review deals with the recent progress made in the field of the electrochemical detection of serotonin by means of electrochemical sensors based on various nanomaterials incorporated in the sensitive element. Due to the unique chemical and physical properties of these nanomaterials, it was possible to develop sensitive electrochemical sensors with excellent analytical performances, useful in the practice. The main electrochemical sensors used in serotonin detection are based on carbon electrodes modified with carbon nanotubes and various materials, such as benzofuran, polyalizarin r

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Maturi, Mirko, Erica Locatelli, Letizia Sambri, et al. "Synthesis of Ultrasmall Single-Crystal Gold–Silver Alloy Nanotriangles and Their Application in Photothermal Therapy." Nanomaterials 11, no. 4 (2021): 912. http://dx.doi.org/10.3390/nano11040912.

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Photothermal therapy has always been a very attractive anti-cancer strategy, drawing a lot of attention thanks to its excellent performance as a non-invasive and pretty safe technique. Lately, nanostructures have become the main characters of the play of cancer therapy due to their ability to absorb near-infrared radiation and efficient light-to-heat conversion. Here we present the synthesis of polyethylene glycol (PEG)-stabilized hybrid ultrasmall (<20 nm) gold–silver nanotriangles (AuAgNTrs) and their application in photothermal therapy. The obtained AuAgNTrs were deeply investigated usin

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Shahzad, Faisal, Wasim Jamshed, Farheen Aslam, et al. "MHD Pulsatile Flow of Blood-Based Silver and Gold Nanoparticles between Two Concentric Cylinders." Symmetry 14, no. 11 (2022): 2254. http://dx.doi.org/10.3390/sym14112254.

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Pulsatory movements appear in a variety of fascinating applications involving periodic flow propagation and control. Pulsing encourages mixing and, as a result, mass and heat exchange with the boundaries. Pulsing also helps to decrease surface fouling by allowing solid particles to migrate. An exact solution of the Navier–Stokes equations for the transport of an incompressible viscous fluid in a channel with arbitrary pressure distribution is described in this study. The flow is defined by two primary parameters: the pulsation parameter, which is determined by the periodic pressure gradient, a

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Samoilova, Nadezhda A., Maria A. Krayukhina, Alexander A. Korlyukov, Zinaida S. Klemenkova, Alexander V. Naumkin, and Yaroslav O. Mezhuev. "One-Pot Synthesis of Colloidal Hybrid Au (Ag)/ZnO Nanostructures with the Participation of Maleic Acid Copolymers." Polymers 15, no. 7 (2023): 1670. http://dx.doi.org/10.3390/polym15071670.

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One-pot synthesis of colloidal Au/ZnO and Ag/ZnO nanohybrid structures was carried out. The copolymers of maleic acid—poly(N-vinyl-2-pyrrolidone-alt-maleic acid), poly(ethylene-alt-maleic acid), or poly(styrene-alt-maleic acid) were used as templates for the sorption of cations of metals-precursors and stabilization of the resulting nanoheterostructures. Simultaneous production of two types of nanoparticles has been implemented under mild conditions in an aqueous alkaline medium and without additional reagents. Equimolar ratios of the metal cations and appropriate load on all copolymers were u

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Yanar, Fatih, Dario Carugo, and Xunli Zhang. "Hybrid Nanoplatforms Comprising Organic Nanocompartments Encapsulating Inorganic Nanoparticles for Enhanced Drug Delivery and Bioimaging Applications." Molecules 28, no. 15 (2023): 5694. http://dx.doi.org/10.3390/molecules28155694.

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Organic and inorganic nanoparticles (NPs) have attracted significant attention due to their unique physico-chemical properties, which have paved the way for their application in numerous fields including diagnostics and therapy. Recently, hybrid nanomaterials consisting of organic nanocompartments (e.g., liposomes, micelles, poly (lactic-co-glycolic acid) NPs, dendrimers, or chitosan NPs) encapsulating inorganic NPs (quantum dots, or NPs made of gold, silver, silica, or magnetic materials) have been researched for usage in vivo as drug-delivery or theranostic agents. These classes of hybrid mu

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Mauzeroll, Janine. "Bioinspired Nanomaterial Synthesis and Applications in Catalysis." ECS Meeting Abstracts MA2022-01, no. 50 (2022): 2114. http://dx.doi.org/10.1149/ma2022-01502114mtgabs.

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We will discuss the use of a tobacco mosaic virus coat protein (TMVCP) as a versatile platform to synthesize a series of metallic nanomaterials and their applications in energy related electrocatalytic reactions. Taking advantage of the self-assembly properties of TMVCP under different solution conditions, nanoparticles can be embedded onto the disk protein surface or capped by protein subunits. We show that in addition to the eco-friendly synthesis merit, the as prepared materials are superior catalysts in electrocatalytic reactions. While the nanosized silver rings exhibit significant enhanc

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Thongkam, Thitiporn, Amara Apilux, Thitaporn Tusai, Tewarak Parnklang, and Sumana Kladsomboon. "Thy-AuNP-AgNP Hybrid Systems for Colorimetric Determination of Copper (II) Ions Using UV-Vis Spectroscopy and Smartphone-Based Detection." Nanomaterials 12, no. 9 (2022): 1449. http://dx.doi.org/10.3390/nano12091449.

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A colorimetric probe based on a hybrid sensing system of gold nanoparticles (AuNPs), silver nanoparticles (AgNPs), and thymine (Thy) was developed for easy and rapid detection of copper (II) ions (Cu2+) in solution. The underlying principle of this probe was the Cu2+-triggered aggregation of the nanoparticle components. Color change of the sensing solution (from red to purple) was clearly observed with naked eyes. The experimental parameters, including pH and concentration of tris buffer, thymine concentration and AgNP dilution ratios, were investigated and optimized. Once optimized, the limit

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Hanafy, Nemany, Maged El-Kemary, and Stefano Leporatti. "Micelles Structure Development as a Strategy to Improve Smart Cancer Therapy." Cancers 10, no. 7 (2018): 238. http://dx.doi.org/10.3390/cancers10070238.

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Micelles as colloidal suspension have attracted considerable attention due to their potential use for both cancer diagnosis and therapy. These structures have proven their ability to deliver poorly water-soluble anticancer drugs, improve drug stability, and have good penetration and site-specificity, leading to enhance therapeutic efficacy. Micelles are composed of hydrophobic and hydrophilic components assembled into nanosized spherical, ellipsoid, cylindrical, or unilamellar structures. For their simple formation, they are widely studied, either by using opposite polymers attachment consisti

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Zvyagin, Andrey I., Tamara A. Chevychelova, Aleksey S. Perepelitsa, Mikhail S. Smirnov, and Oleg V. Ovchinnikov. "Formation of plasmon-exciton nanostructures based on quantum dots and metal nanoparticles with a nonlinear optical response." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 25, no. 3 (2023): 350–58. http://dx.doi.org/10.17308/kcmf.2023.25/11258.

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The establishment of the conditions for the formation of nanostructures with plasmon-exciton interaction based onquantum dots and plasmonic nanoparticles that provide unique nonlinear optical properties is an urgent task. The study demonstrates the formation of plasmon-exciton nanostructures based on hydrophilic colloidal Zn0.5Cd0.5S, Ag2S quantum dots and metal nanoparticles. Transmission electron microscopy and optical absorption and luminescence spectroscopy were used to substantiate the formation of plasmon-exciton hybrid nanostructures. The phase composition of the studied samples was det

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