Advances of Nonclassical Crystallization toward Self-Purification of Precious Metal Nanoparticle Mixtures

2021 ◽  
Author(s):  
Felizitas Kirner ◽  
Elena V. Sturm
Keyword(s):  
Precious Metal ◽  
Metal Nanoparticle

scholarly journals A Highly Efficient Monolayer Pt Nanoparticle Catalyst Prepared on a Glass Fiber Surface

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 472
Author(s):  
Teruyoshi Sasaki ◽  
Yusuke Horino ◽  
Tadashi Ohtake ◽  
Kazufumi Ogawa ◽  
Yoshifumi Suzaki
Keyword(s):  
Glass Fiber ◽  
Precious Metal ◽  
Metal Nanoparticle ◽  
Support Surface ◽  
Exhaust Gas ◽  
Impregnation Method ◽  
Pt Nanoparticle ◽  
Commercial Catalyst ◽  
Highly Efficient ◽  
Platinum Particles

Over the past few years, various nanoparticle-supported precious metal-based catalysts have been investigated to reduce the emission of harmful substances from automobiles. Generally, precious metal nanoparticle-based exhaust gas catalysts are prepared using the impregnation method. However, these catalysts suffer from the low catalytic activity of the precious metal nanoparticles involved. Therefore, in this study, we developed a novel method for preparing highly efficient glass fiber-supported Pt nanoparticle catalysts. We uniformly deposited a single layer of platinum particles on the support surface using a chemically adsorbed monomolecular film. The octane combustion performance of the resulting catalyst was compared with that of a commercial catalyst. The precious metal loading ratio of the proposed catalyst was approximately seven times that of the commercial catalyst. Approximately one-twelfth of the mass of the proposed catalyst exhibited a performance comparable to that of the commercial catalyst. Thus, the synthesis method used herein can be used to reduce the weight, size, and manufacturing cost of exhaust gas purification devices used in cars.

Earth-Abundant and Precious Metal Nanoparticle Catalysis

2020 ◽  
pp. 77-129
Author(s):  
Margery Cortes-Clerget ◽  
Nnamdi Akporji ◽  
Balaram S. Takale ◽  
Alex Wood ◽  
Evan Landstrom ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Nanoparticle ◽  
Earth Abundant ◽  
Nanoparticle Catalysis

scholarly journals Monovalent Alkali Cations: Simple and Eco-Friendly Stabilizers for Surfactant-Free Precious Metal Nanoparticle Colloids

2019 ◽  
Vol 7 (16) ◽  
pp. 13680-13686 ◽  
Author(s):  
Jonathan Quinson ◽  
Jan Bucher ◽  
Søren B. Simonsen ◽  
Luise Theil Kuhn ◽  
Sebastian Kunz ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Nanoparticle ◽  
Alkali Cations

Size-dependent emission of a dipole coupled to a metal nanoparticle

MRS Advances ◽  
2020 ◽  
Vol 5 (62) ◽  
pp. 3315-3325
Author(s):  
Viktoriia Savchuk ◽  
Arthur R. Knize ◽  
Pavlo Pinchuk ◽  
Anatoliy O. Pinchuk
Keyword(s):  
Numerical Analysis ◽  
Quantum Yield ◽  
Electric Dipole ◽  
Incident Radiation ◽  
Metal Nanoparticle ◽  
Plasmonic Nanoparticle ◽  
Size Dependent ◽  
Emission Enhancement ◽  
Electric Dipoles

AbstractWe present a systematic numerical analysis of the quantum yield of an electric dipole coupled to a plasmonic nanoparticle. We observe that the yield is highly dependent on the distance between the electric dipole and the nanoparticle, the size and permittivity of the nanoparticle, and the wavelength of the incident radiation. Our results indicate that enhancement of the quantum yield is only possible for electric dipoles coupled to a nanoparticle with a radius of 20 nm or larger. As the size of the nanoparticle is increased, emission enhancement occurs at wavelengths dependent on the coupling distance.

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