Plasmonic enhancement using core-shell nanoparticles

2005 ◽  
Author(s):  
Ondrej Stranik ◽  
Robert Nooney ◽  
Colette McDonagh ◽  
Brian D. MacCraith
Keyword(s):  
Core Shell ◽  
Plasmonic Enhancement ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

scholarly journals Helium droplet assisted synthesis of plasmonic Ag@ZnO core@shell nanoparticles

Nano Research ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2979-2986 ◽  
Author(s):  
Alexander Schiffmann ◽  
Thomas Jauk ◽  
Daniel Knez ◽  
Harald Fitzek ◽  
Ferdinand Hofer ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Particle Morphology ◽  
Localized Surface Plasmon ◽  
Core Shell ◽  
Plasmonic Enhancement ◽  
Shell Nanoparticles ◽  
Scanning Transmission ◽  
High Kinetic Energy ◽  
Particle Size And Shape ◽  
Core Shell Nanoparticles

Abstract Plasmonic Ag@ZnO core@shell nanoparticles are formed by synthesis inside helium droplets with subsequent deposition and controlled oxidation. The particle size and shape can be controlled from spherical sub-10 nm particles to larger elongated structures. An advantage of the method is the complete absence of solvents, precursors, and other chemical agents. The obtained particle morphology and elemental composition have been analyzed by scanning transmission electron microscopy (STEM) and energy dispersive X-ray spectroscopy (EDS). The results reveal that the produced particles form a closed and homogeneous ZnO layer around a 2–3 nm Ag core with a uniform thickness of (1.33 ± 0.15) nm and (1.63 ± 0.31) nm for spherical and wire-like particles, respectively. The results are supported by ultraviolet photoelectron spectroscopy (UPS), which indicates a fully oxidized shell layer for the particles studied by STEM. The plasmonic properties of the produced spherical Ag@ZnO core@shell particles are investigated by two-photon photoelectron (2PPE) spectroscopy. Upon excitation of the localized surface plasmon resonance in Ag at around 3 eV, plasmonic enhancement leads to the liberation of electrons with high kinetic energy. This is observed for both Ag and Ag@ZnO particles, showing that even if a Ag cluster is covered by the ZnO layer, a plasmonic enhancement can be observed by photoelectron spectroscopy.

Plasmonic enhancement of the optical absorption and catalytic efficiency of BiVO4 photoanodes decorated with Ag@SiO2 core–shell nanoparticles

2014 ◽  
Vol 16 (29) ◽  
pp. 15272-15277 ◽  
Author(s):  
Fatwa F. Abdi ◽  
Ali Dabirian ◽  
Bernard Dam ◽  
Roel van de Krol
Keyword(s):  
Optical Absorption ◽  
Catalytic Efficiency ◽  
Core Shell ◽  
Plasmonic Enhancement ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Plasmonic Ag@SiO2 core–shell nanoparticles enhance the performance of BiVO4 photoanodes by an impressive ∼250%, through improved optical absorption and more efficient catalysis.

Preparation and Electrocatalytic Performance of Thin-shell Ni/Pt Core-shell Nanoparticles

2012 ◽  
Vol 27 (1) ◽  
pp. 95-101
Author(s):  
Shi-Bin LIU ◽  
Chun-Ying YANG ◽  
Zhong-Lin ZHANG ◽  
Dong-Hong DUAN ◽  
Xiao-Gang HAO ◽  
...  
Keyword(s):  
Thin Shell ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Electrocatalytic Performance ◽  
Core Shell Nanoparticles

Pluronic-Based Core/Shell Nanoparticles for Drug Delivery and Diagnosis

2013 ◽  
Vol 20 (28) ◽  
pp. 3488-3499 ◽  
Author(s):  
Yon Jung ◽  
Hwanbum Lee ◽  
Jae Kim ◽  
Eun Koo ◽  
Keun Oh ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles
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