scholarly journals Synthesis, Structure, Properties, and Applications of Bimetallic Nanoparticles of Noble Metals

2020 ◽  
Vol 30 (21) ◽  
pp. 1909260 ◽  
Author(s):  
Kateryna Loza ◽  
Marc Heggen ◽  
Matthias Epple
Keyword(s):  
Noble Metals ◽  
Bimetallic Nanoparticles ◽  
Nanoparticles Of Noble Metals ◽  
Structure Properties

Comparative evaluation of the potentiating effect of nanoparticles of noble metals in the antimicrobial compositions

2019 ◽  
pp. 5-15
Author(s):  
Konstantin I. Gurin ◽  
◽  
Valentina S. Menukhova ◽  
Ivan P. Pogorelskiy ◽  
Vladimir S. Lobastov ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
Noble Metals ◽  
Nanoparticles Of Noble Metals

scholarly journals Antibacterial Activity of Partially Oxidized Ag/Au Nanoparticles against the Oral PathogenPorphyromonas gingivalisW83

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Megan S. Holden ◽  
Jason Black ◽  
Ainsely Lewis ◽  
Marie-Claire Boutrin ◽  
Elvin Walemba ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Periodontal Disease ◽  
Noble Metals ◽  
Bimetallic Nanoparticles ◽  
Periodontal Pocket ◽  
Dissolution Behavior ◽  
Galvanic Replacement ◽  
Chloroauric Acid ◽  
Ag Nps ◽  
Silver Dissolution

Advances in nanotechnology provide opportunities for the prevention and treatment of periodontal disease. While physicochemical properties of Ag containing nanoparticles (NPs) are known to influence the magnitude of their toxicity, it is thought that nanosilver can be made less toxic to eukaryotes by passivation of the NPs with a benign metal. Moreover, the addition of other noble metals to silver nanoparticles, in the alloy formulation, is known to alter the silver dissolution behavior. Thus, we synthesized glutathione capped Ag/Au alloy bimetallic nanoparticles (NPs)viathe galvanic replacement reaction between maltose coated Ag NPs and chloroauric acid (HAuCl4) in 5% aqueous triblock F127 copolymer solution. We then compared the antibacterial activity of the Ag/Au NPs to pure Ag NPs onPorphyromonas gingivalisW83, a key pathogen in the development of periodontal disease. Only partially oxidized glutathione capped Ag and Ag/Au (Au : Ag ≈ 0.2) NPs inhibited the planktonic growth ofP. gingivalisW83. This effect was enhanced in the presence of hydrogen peroxide, which simulates the oxidative stress environment in the periodontal pocket during chronic inflammation.

Spectroscopy of thin polyaniline films deposited during chemical oxidation of aniline

2012 ◽  
Vol 66 (5) ◽  
Author(s):  
Miroslava Trchová ◽  
Zuzana Morávková ◽  
Ivana Šeděnková ◽  
Jaroslav Stejskal
Keyword(s):  
Conducting Polymer ◽  
Noble Metals ◽  
Film Growth ◽  
Chemical Oxidation ◽  
Present Review ◽  
Spectroscopic Methods ◽  
Polyaniline Film ◽  
Polyaniline Films ◽  
Nanoparticles Of Noble Metals

AbstractAny surface immersed in the aqueous reaction mixture used for the preparation of polyaniline becomes coated with a polyaniline film of submicrometre thickness. In this way, various materials can be modified by an overlayer of conducting polymer. The present review illustrates the role of infrared, Raman, and UV-VIS spectroscopies in the studies of polyaniline film growth. Spectroscopic methods are crucial in the evaluation of the performance of polyaniline films alone or in combination with nanoparticles of noble metals. The assessment of film ageing and stability can be followed conveniently by these methods. Carbonization of polyaniline films to nitrogen-containing carbon analogues is also discussed.

Photochromic Core-Shell Nanoparticles

2021 ◽  
Vol 01 ◽  
Author(s):  
V.A. Barachevsky
Keyword(s):  
Quantum Dots ◽  
Noble Metals ◽  
Kinetic Studies ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Preparation Methods ◽  
Hybrid Compounds ◽  
The Core ◽  
Core Shell Nanoparticles ◽  
Nanoparticles Of Noble Metals

: The results of own spectral-kinetic studies in the field of nanophotochromism of the core‒shell type hybrid compounds are integrated. The properties of photochromic nanoparticles of this type based on photochromic spirocompounds (spiropyrans and spirooxazines), chromenes, and diarylethenes and nanoparticles of noble metals (Ag and Au), diamonds, graphene and its oxide, silica, fullerenes, and quantum dots are considered. Preparation methods of photochromic nanoparticles have been developed.

Nanoparticles of Noble Metals as Effective Platforms for the Fabrication of Amperometric Biosensors on Hydrogen Peroxide

2016 ◽  
Vol 14 (12) ◽  
pp. 1169-1177 ◽  
Author(s):  
Nataliya Stasyuk ◽  
Galina Gayda ◽  
Halyna Klepach ◽  
Mykhailo Gonchar
Keyword(s):  
Hydrogen Peroxide ◽  
Noble Metals ◽  
Amperometric Biosensors ◽  
Nanoparticles Of Noble Metals

γ-ray synthesis of composite nanoparticles of noble metals and magnetic iron oxides

2004 ◽  
Vol 51 (6) ◽  
pp. 467-472 ◽  
Author(s):  
S. Seino ◽  
T. Kinoshita ◽  
Y. Otome ◽  
T. Maki ◽  
T. Nakagawa ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Noble Metals ◽  
Composite Nanoparticles ◽  
Γ Ray ◽  
Nanoparticles Of Noble Metals

Green synthesis and characterization of gold-based anisotropic nanostructures using bimetallic nanoparticles as seeds

2021 ◽  
Author(s):  
Alfonso Nieto-Argüello ◽  
Alejandro Torres-Castro ◽  
Rafael Villaurrutia-Arenas ◽  
Juan J. Martínez-Sanmiguel ◽  
María Ujué González ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Electronic Properties ◽  
Noble Metals ◽  
Bimetallic Nanoparticles ◽  
Synthesis And Characterization ◽  
Optical And Electronic Properties ◽  
Anisotropic Nanostructures

Nanostructured noble metals are of great interest because of their tunable optical and electronic properties. However, the green synthesis of anisotropic nanostructures with a defined geometry by a systematic nanoassembly...

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