Metallic Nanoparticle: a Review
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Silver Nanoparticles: Synthesis and Application for Nanomedicine
International Journal of Molecular Sciences Review Silver Nanoparticles: Synthesis and Application for Nanomedicine Sang Hun Lee 1 and Bong-Hyun Jun 2,* 1 Department of Bioengineering, University of California Berkeley, Berkeley, CA 94720, USA; [email protected] 2 Department of Bioscience and Biotechnology, Konkuk University, 1 Hwayang-dong, Gwanjin-gu, Seoul 143-701, Korea * Correspondence: [email protected]; Tel.: +82-2-450-0521 Received: 30 January 2019; Accepted: 15 February 2019; Published: 17 February 2019 Abstract: Over the past few decades, metal nanoparticles less than 100 nm in diameter have made a substantial impact across diverse biomedical applications, such as diagnostic and medical devices, for personalized healthcare practice. In particular, silver nanoparticles (AgNPs) have great potential in a broad range of applications as antimicrobial agents, biomedical device coatings, drug-delivery carriers, imaging probes, and diagnostic and optoelectronic platforms, since they have discrete physical and optical properties and biochemical functionality tailored by diverse size- and shape-controlled AgNPs. In this review, we aimed to present major routes of synthesis of AgNPs, including physical, chemical, and biological synthesis processes, along with discrete physiochemical characteristics of AgNPs. We also discuss the underlying intricate molecular mechanisms behind their plasmonic properties on mono/bimetallic structures, potential cellular/microbial cytotoxicity, and optoelectronic property. Lastly, we conclude this review -
Reflecting Antiquity Explores the Rediscovery of Roman Glass and Its Influence on Modern Glass Production
Reflecting Antiquity explores the rediscovery of Roman glass and its influence on modern glass production. It brings together 112 objects from more than 24 lenders, featuring ancient Roman originals as well as the modern replicas they inspired. Following are some of the highlights on view in the exhibition. Portland Vase Base Disk The Portland Vase is the most important and famous work of cameo glass to have survived from ancient Rome. Modern analysis of the vase, with special attention to the elongation of the bubbles preserved in the lower body, suggest that it was originally shaped as an amphora (storage vessel) with a pointed base. At some point in antiquity, the vessel suffered some damage and acquired this replacement disk. The male figure and the foliage on the disk were not carved by the same Unknown artist that created the mythological frieze on the vase. Wearing a Phrygian cap Portland Vase Base Disk Roman, 25 B.C.–A.D. 25 and pointing to his mouth in a gesture of uncertainty, the young man is Paris, a Glass Object: Diam.: 12.2 cm (4 13/16 in.) prince of Troy who chose Aphrodite over Hera and Athena as the most beautiful British Museum. London, England GR1945.9-27.2 goddess on Mount Olympus. It is clear from the way the image is truncated that VEX.2007.3.1 it was cut from a larger composition, presumably depicting the Judgment of Paris. The Great Tazza A masterpiece of cameo-glass carving, this footed bowl (tazza) consists of five layers of glass: semiopaque green encased in opaque white, green, a second white, and pink. -
A Review on Silver Nanoparticles: Classification, Various Methods Of
water Review A Review on Silver Nanoparticles: Classification, Various Methods of Synthesis, and Their Potential Roles in Biomedical Applications and Water Treatment Muhammad Zahoor 1,* , Nausheen Nazir 1 , Muhammad Iftikhar 1, Sumaira Naz 1, Ivar Zekker 2,*, Juris Burlakovs 3 , Faheem Uddin 4, Abdul Waheed Kamran 5, Anna Kallistova 6, Nikolai Pimenov 6 and Farhat Ali Khan 7 1 Department of Biochemistry, University of Malakand, Chakdara 18800, Pakistan; [email protected] (N.N.); [email protected] (M.I.); [email protected] (S.N.) 2 Faculty of Science, Institute of Chemistry, University of Tartu, 51014 Tartu, Estonia 3 Institute of Forestry and Rural Engineering, Estonian University of Life Sciences, 51006 Tartu, Estonia; [email protected] 4 Department of Electrical Engineering, University of Engineering & Technology, Mardan 23200, Pakistan; [email protected] 5 Department of Chemistry, University of Malakand, Chakdara 18800, Pakistan; [email protected] 6 Research Centre of Biotechnology of the Russian Academy of Sciences, Winogradsky Institute of Microbiology, 119071 Moscow, Russia; [email protected] (A.K.); [email protected] (N.P.) 7 Department of Pharmacy, Shaheed Benazir Bhutto University, Sheringal 18050, Pakistan; [email protected] Citation: Zahoor, M.; Nazir, N.; * Correspondence: [email protected] (M.Z.); [email protected] (I.Z.) Iftikhar, M.; Naz, S.; Zekker, I.; Burlakovs, J.; Uddin, F.; Kamran, A.W.; Kallistova, A.; Pimenov, N.; Abstract: Recent developments in nanoscience have appreciably modified how diseases are pre- et al. A Review on Silver vented, diagnosed, and treated. Metal nanoparticles, specifically silver nanoparticles (AgNPs), are Nanoparticles: Classification, Various widely used in bioscience. From time to time, various synthetic methods for the synthesis of AgNPs Methods of Synthesis, and Their are reported, i.e., physical, chemical, and photochemical ones. -
An in Vitro Study on the Cytotoxicity and Genotoxicity of Silver Sulfide Quantum Dots Coated with Meso-2,3-Dimercaptosuccinic Ac
Turk J Pharm Sci 2019;16(3):282-291 DOI: 10.4274/tjps.galenos.2018.85619 ORIGINAL ARTICLE An In Vitro Study on the Cytotoxicity and Genotoxicity of Silver Sulfide Quantum Dots Coated with Meso-2,3-dimercaptosuccinic Acid Mezo-2,3-dimerkaptosüksinik Asitle Kaplanmış Gümüş Sülfit Kuantum Noktalarının Sitotoksisitesi ve Genotoksisitesi Üzerine Bir In Vitro Çalışma Deniz ÖZKAN VARDAR1, Sevtap AYDIN2, İbrahim HOCAOĞLU3, Havva YAĞCI ACAR4, Nursen BAŞARAN2* 1Hitit University, Sungurlu Vocational High School, Health Programs, Çorum, Turkey 2Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Ankara, Turkey 3Koç University, Graduate School of Materials Science and Engineering, İstanbul, Turkey 4Koç University, College of Sciences, Department of Chemistry, İstanbul, Turkey ABSTRACT Objectives: Silver sulfide (Ag2S) quantum dots (QDs) are highly promising nanomaterials in bioimaging systems due to their high activities for both imaging and drug/gene delivery. There is insufficient research on the toxicity of Ag2S QDs coated with meso-2,3-dimercaptosuccinic acid (DMSA). In this study, we aimed to determine the cytotoxicity of Ag2S QDs coated with DMSA in Chinese hamster lung fibroblast (V79) cells over a wide range of concentrations (5-2000 µg/mL). Materials and Methods: Cell viability was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and neutral red uptake (NRU) assays. The genotoxic and apoptotic effects of DMSA/Ag2S QDs were also assessed by comet assay and real-time polymerase chain reaction technique, respectively. Results: Cell viability was 54.0±4.8% and 65.7±4.1% at the highest dose (2000 µg/mL) of Ag2S QDs using the MTT and NRU assays, respectively. -
Synthesis and Environmental Chemistry of Silver and Iron Oxide Nanoparticles
SYNTHESIS AND ENVIRONMENTAL CHEMISTRY OF SILVER AND IRON OXIDE NANOPARTICLES By SUSAN ALISON CUMBERLAND A thesis submitted to The University of Birmingham For the degree of DOCTOR OF PHILOSOPHY School of Earth and Environmental Sciences College of Life and Environmental Sciences The University of Birmingham March 2010 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. Abstract Engineered nanoparticles are defined as having a dimension that is between one and one hundred nanometres. With toxicology studies reporting various degrees of toxicity the need to investigate nanoparticle fate and behaviour is vital. Monodispersed engineered nanoparticles were synthesised in-house to produce suitable materials to examine such processes. Iron oxide nanoparticles (5 nm) and citrate coated silver nanoparticles (20 nm) were subjected to different conditions of pH, ionic strength and different types of commercially available natural organic matter. Changes in particle size and aggregation were examined using a multi-method approach. Results showed that the natural organic matter was able to adsorb onto nanoparticle surfaces and improve their stability when subjected to changes in pH and ionic strength, where they would normally aggregate. -
Accessible Silver-Iron Oxide Nanoparticles As a Nanomaterial for Supported Liquid Membranes
nanomaterials Article Accessible Silver-Iron Oxide Nanoparticles as a Nanomaterial for Supported Liquid Membranes Ioana Alina Dimulescu (Nica) 1, Aurelia Cristina Nechifor 1,*, Cristina Bardacˇ aˇ (Urducea) 1, Ovidiu Oprea 2 , Dumitru Pa¸scu 1, Eugenia Eftimie Totu 1,* , Paul Constantin Albu 3 , Gheorghe Nechifor 1 and Simona Gabriela Bungău 4 1 Analytical Chemistry and Environmental Engineering Department, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania; [email protected] (I.A.D.); [email protected] (C.B.); [email protected] (D.P.); [email protected] (G.N.) 2 Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania; [email protected] 3 Radioisotopes & Radiation Metrology Department (DRMR), Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), 30 Reactorului Street, 023465 Magurele, Romania; [email protected] 4 Faculty of Medicine and Pharmacy, University of Oradea, Universită¸tiiStreet No.1, 410087 Oradea, Romania; [email protected] * Correspondence: [email protected] (A.C.N.); [email protected] (E.E.T.) Abstract: The present study introduces the process performances of nitrophenols pertraction using new liquid supported membranes under the action of a magnetic field. The membrane system is based on the dispersion of silver–iron oxide nanoparticles in n-alcohols supported on hollow microp- Citation: Dimulescu (Nica), I.A.; orous polypropylene fibers. The iron oxide–silver nanoparticles are obtained directly through cyclic Nechifor, A.C.; Bardacˇ aˇ (Urducea), C.; − 3− voltammetry electrolysis run in the presence of soluble silver complexes ([AgCl2] ; [Ag(S2O3)2] ; Oprea, O.; Pa¸scu,D.; Totu, E.E.; Albu, [Ag(NH ) ]+) and using pure iron electrodes. -
Uncovering Loss Mechanisms in Silver Nanoparticle-Blended Plasmonic Organic Solar Cells
ARTICLE Received 20 Feb 2013 | Accepted 9 May 2013 | Published 13 Jun 2013 DOI: 10.1038/ncomms3004 Uncovering loss mechanisms in silver nanoparticle-blended plasmonic organic solar cells Bo Wu1, Xiangyang Wu2, Cao Guan1, Kong Fai Tai1, Edwin Kok Lee Yeow2, Hong Jin Fan1,4,5, Nripan Mathews3,4,5 & Tze Chien Sum1,4,5 There has been much controversy over the incorporation of organic-ligand-encapsulated plasmonic nanoparticles in the active layer of bulk heterojunction organic solar cells, where both enhancement and detraction in performance have been reported. Here through comprehensive transient optical spectroscopy and electrical characterization, we demonstrate evidence of traps responsible for performance degradation in plasmonic organic solar cells fabricated with oleylamine-capped silver nanoparticles blended in the poly (3-hexylthiophene):[6,6]-phenyl-C 61-butyric acid methyl ester active layer. Despite an initial increase in exciton generation promoted by the presence of silver nanoparticles, transient absorption spectroscopy reveals no increase in the later free polaron population—attributed to fast trapping of polarons by nearby nanoparticles. The increased trap-assisted recombi- nation is also reconfirmed by light intensity-dependent electrical measurements. These new insights into the photophysics and charge dynamics of plasmonic organic solar cells would resolve the existing controversy and provide clear guidelines for device design and fabrication. 1 Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore. 2 Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore. 3 Division of Materials Technology, School of Materials Science and Engineering, Nanyang Technological University, Block N4.1 Nanyang Avenue, Singapore 639798, Singapore. -
Silver-Nanoparticle Supported on Nanocrystalline Cellulose Using Cetyltrimethylammonium Bromide: Synthesis and Catalytic Performance for Decolorization of Dyes
J Nanostruct 11(1): 48-56, Winter 2021 RESEARCH PAPER Silver-nanoparticle Supported on Nanocrystalline Cellulose using Cetyltrimethylammonium Bromide: Synthesis and Catalytic Performance for Decolorization of Dyes Hannaneh Heidari*, Melika Karbalaee Department of Chemistry, Faculty of Physics and Chemsitry, Alzahra University, Tehran, Iran ARTICLE INFO ABSTRACT In this work, we reported that the ultrasonically synthesized Article History: nanocrystalline cellulose (NCC) from microcrystalline cellulose has the Received 16 September 2020 Accepted 28 December 2020 capacity for use as natural and green matrices for the synthesis of silver Published 01 January 2021 nanoparticles. Cationic surfactant cetyltrimethylammonium bromide (CTAB) was employed as a modifier and stabilizer for NCC. The structure Keywords: of as-synthesized composite (Ag/CTAB/NCC) was characterized by Cetyltrimethylammonium Fourier transform infrared spectroscopy (FT-IR); field emission scanning bromide electron microscopy (FE-SEM); Transmission electron microscopy (TEM); Dye Energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The Nanocomposite XRD pattern confirmed the single cubic phase of Ag nanoparticles with crystallite size about 30 nm. TEM study also verified that the average Nanocrystalline cellulose particle size of the spherical-shaped Ag NPs. catalytic activity of Ag/CTAB/ Silver nanoparticles NCC has been analyzed by performing the reduction of certain toxic azo methyl orange dye (MO) (by two methods) and aromatic nitro compound of 4- nitrophenol (4-NP) in shorter time. The reduction of MO to hydrazine derivatives and 4-NP to 4-aminophenol takes place with a pseudo-first- order rate constants. The reduction time regularly decreased and the rate of reduction (k) increases (3 fold) with increasing catalyst amount in method (2) (mmol NaBH4/mmol MO = 250 and 42 mg catalyst) compared to method (1) (mmol NaBH4/mmol MO = 400 and 5 mg catalyst). -
Selection and Evaluation of a Silver Nanoparticle Imaging Agent for Dual-Energy Mammography
University of Pennsylvania ScholarlyCommons Publicly Accessible Penn Dissertations 2014 Selection and Evaluation of a Silver Nanoparticle Imaging Agent for Dual-Energy Mammography Roshan Anuradha Karunamuni University of Pennsylvania, [email protected] Follow this and additional works at: https://repository.upenn.edu/edissertations Part of the Biomedical Commons Recommended Citation Karunamuni, Roshan Anuradha, "Selection and Evaluation of a Silver Nanoparticle Imaging Agent for Dual- Energy Mammography" (2014). Publicly Accessible Penn Dissertations. 1326. https://repository.upenn.edu/edissertations/1326 This paper is posted at ScholarlyCommons. https://repository.upenn.edu/edissertations/1326 For more information, please contact [email protected]. Selection and Evaluation of a Silver Nanoparticle Imaging Agent for Dual-Energy Mammography Abstract Over the past decade, contrast-enhanced (CE) dual-energy (DE) x-ray breast imaging has emerged as an exciting, new modality to provide high quality anatomic and functional information of the breast. The combination of these data in a single imaging procedure represents a powerful tool for the detection and diagnosis of breast cancer. The most widely used implementation of CEDE imaging is k-edge imaging, whereby two x-ray spectra are placed on either side of the k-edge of the contrast material. Currently, CEDE imaging is performed with iodinated contrast agents. The lower energies used in clinical DE breast imaging systems compared to imaging systems for other organs suggest that an alternative material may be better suited. We developed an analytical model to compare the contrast of various elements in the periodic table. The model predicts that materials with atomic numbers from 42 to 52 should provide the best contrast in DE breast imaging while still providing high-quality anatomical images. -
Making Better Use of Clinical Trials
Making better use of clinical trials Computational decision support methods for evidence-based drug benefit-risk assessment ZOL OFT PAXIL PLACEBO 75 PROZAC 20mg Gert van Valkenhoef Making better use of clinical trials Computational decision support methods for evidence-based drug benefit-risk assessment Proefschrift ter verkrijging van het doctoraat in de Medische Wetenschappen aan de Rijksuniversiteit Groningen op gezag van de Rector Magnificus, dr. E. Sterken, in het openbaar te verdedigen op woensdag 19 december 2012 om 14:30 uur door Gerardus Hendrikus Margondus van Valkenhoef geboren op 25 juli 1985 te Amersfoort Promotores: Prof. dr. J.L. Hillege Prof. dr. E.O. de Brock Copromotor: Dr. T.P. Tervonen Beoordelingscommissie: Prof. dr. A.E. Ades Prof. dr. E.R. van den Heuvel Prof. dr. M.J. Postma ISBN 978-90-367-5884-0 (PDF e-book) iii This thesis was produced in the context of the Escher Project (T6-202), a project of the Dutch Top Institute Pharma. The Escher Project brings together university and pharmaceutical partners with the aim of energizing pharmaceutical R & D by iden- tifying, evaluating, and removing regulatory and methodological barriers in order to bring efficacious and safe medicines to patients in an efficient and timely fashion. The project focuses on delivering evidence and credibility for regulatory reform and policy recommendations. The work was performed at the Faculty of Economics and Business, University of Groningen (2009 – 2010), at the Department of Epidemiology, University Medical Center Groningen (2010-2012), and during a series of research visits to the Depart- ment of Community Based Medicine, University of Bristol. -
AP0599 Nanoparticle Decoration of Carbon Nanotubes by Sputtering
Hiden Reference: AP0599 Hiden Product: EQP 1000 Nanoparticle decoration of carbon nanotubes by sputtering Nanoparticle-decorated carbon nanotubes (CNTs) are effective chemical and biological sensors, surfaces for heterogeneous catalysis, photovoltaics, and conformal thermal interface materials for electronics. The particle morphology on the CNT sidewalls strongly affects the properties and performance of metal-nanotube hybrids for such applications. Often nanoparticles are deposited by electrochemical methods, which generally require time consuming treatments with strong acid for surface defect production, which can result in a compromise of the intrinsic mechanical or transport properties of the CNTs, inhibiting their multi-functionality. We have examined physical vapor deposition techniques as scalable alternatives to electrochemical treatment for in situ growth of metal nanoparticles on the sidewalls of multi-wall carbon nanotubes (MWCNTs). Vapor phase growth of gold, nickel and titanium metal nanoparticles on multi-wall carbon nanotube (MWCNT) bucky paper was investigated. The size and distribution of nanoparticles was dependent on the intrinsic binding energy of the elemental metals, where metals with larger cohesive energies exhibited a higher nanoparticle density and smaller particle diameters. Particle diameters for any metal could be altered to mimic that of metals with different binding energies by in situ modification of the MWCNT surfaces by energetic metal ions (characterized with a Hiden EQP 1000 as shown in Figure 1) during their growth, where removal of a carbon atom from a MWCNT surface requires incident ions kinetic energies > 5-7 eV. Control of the ariel density, diameter and morphology of metal nanoparticles grown on as-received and annealed multi- walled carbon nanotube sidewalls by sputtering was demonstrated for gold, nickel and titanium. -
In-Vitro Cell Exposure Studies for the Assessment of Nanoparticle Toxicity in the Lung—A Dialog Between Aerosol Science and Biology$
Journal of Aerosol Science 42 (2011) 668–692 Contents lists available at ScienceDirect Journal of Aerosol Science journal homepage: www.elsevier.com/locate/jaerosci In-vitro cell exposure studies for the assessment of nanoparticle toxicity in the lung—A dialog between aerosol science and biology$ Hanns-Rudolf Paur a, Flemming R. Cassee b, Justin Teeguarden c, Heinz Fissan d, Silvia Diabate e, Michaela Aufderheide f, Wolfgang G. Kreyling g, Otto Hanninen¨ h, Gerhard Kasper i, Michael Riediker j, Barbara Rothen-Rutishauser k, Otmar Schmid g,n a Institut fur¨ Technische Chemie (ITC-TAB), Karlsruher Institut fur¨ Technologie, Campus Nord, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany b Center for Environmental Health, National Institute for Public Health and the Environment, P.O. Box 1, 3720 MA Bilthoven, The Netherlands c Pacific Northwest National Laboratory, Fundamental and Computational Science Directorate, 902 Battelle Boulevard, Richland, WA 99352, USA d Institute of Energy and Environmental Technologies (IUTA), Duisburg, Germany e Institut fur¨ Toxikologie und Genetik, Karlsruher Institut fur¨ Technologie, Campus Nord, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany f Cultex Laboratories, Feodor-Lynen-Straße 21, 30625 Hannover, Germany g Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum Munchen,¨ Ingolstadter¨ Landstrasse 1, 85764 Neuherberg, Germany h THL National Institute for Health and Welfare, PO Box 95, 70701 Kuopio, Finland i Institut fur¨